Pub Date : 2024-11-02DOI: 10.1016/j.jtice.2024.105814
Chun-Han Hsu , Chao-En Liu , Yi-Hung Liu , Wei-Cheng Chen , Yi-Chieh Chang , Hong-Ping Lin
Background
Metal silicates possess several important advantages as electrode materials for lithium-ion batteries (LIBs), including straightforward synthesis, low cost, and high thermal stability. A green synthesis routes that are capable of increasing metal loading and reducing the impact on the environment are required.
Methods
A Ni-silicate with a multilayer structure and a Ni/Si molar ratio of 0.25 is first prepared using the co-precipitation method. The as-synthesized product is then repeatedly immersed in a Ni2+ solution to obtain Ni-silicate with the desired Ni contents (Ni/Si molar ratio: 0.50–2.00). Finally, the resulting Ni-silicate is reconstructed by hydrothermal treatment under various temperatures (70 °C, 100 °C, 150 °C) and durations (3 h and 24 h) to obtain Ni-phyllosilicate. The effects of the hydrothermal treatment temperature, hydrothermal time, and Ni/Si ratio on the structure, morphology, and surface area of the Ni-silicate composites are examined.
Significant Findings
The Ni-silicate with a Ni/Si ratio of 1.5 has a reversible capacity of 729 mAhg-1, which exceeds traditional graphite anodes (372 mAhg-1). Furthermore, the material exhibits a capacity retention of up to 80 % as the current density is increased from 0.025 Ag-1 to 0.5 Ag-1. Thus, the synthesized Ni-silicate composite is a promising candidate material for LIB anode.
{"title":"Multilayer-coating process for the synthesis of nickel-silicate composite with high Ni loading as high-rate performance lithium-ion anode material","authors":"Chun-Han Hsu , Chao-En Liu , Yi-Hung Liu , Wei-Cheng Chen , Yi-Chieh Chang , Hong-Ping Lin","doi":"10.1016/j.jtice.2024.105814","DOIUrl":"10.1016/j.jtice.2024.105814","url":null,"abstract":"<div><h3>Background</h3><div>Metal silicates possess several important advantages as electrode materials for lithium-ion batteries (LIBs), including straightforward synthesis, low cost, and high thermal stability. A green synthesis routes that are capable of increasing metal loading and reducing the impact on the environment are required.</div></div><div><h3>Methods</h3><div>A Ni-silicate with a multilayer structure and a Ni/Si molar ratio of 0.25 is first prepared using the co-precipitation method. The as-synthesized product is then repeatedly immersed in a Ni<sup>2+</sup> solution to obtain Ni-silicate with the desired Ni contents (Ni/Si molar ratio: 0.50–2.00). Finally, the resulting Ni-silicate is reconstructed by hydrothermal treatment under various temperatures (70 °C, 100 °C, 150 °C) and durations (3 h and 24 h) to obtain Ni-phyllosilicate. The effects of the hydrothermal treatment temperature, hydrothermal time, and Ni/Si ratio on the structure, morphology, and surface area of the Ni-silicate composites are examined.</div></div><div><h3>Significant Findings</h3><div>The Ni-silicate with a Ni/Si ratio of 1.5 has a reversible capacity of 729 mAhg<sup>-1</sup>, which exceeds traditional graphite anodes (372 mAhg<sup>-1</sup>). Furthermore, the material exhibits a capacity retention of up to 80 % as the current density is increased from 0.025 Ag<sup>-1</sup> to 0.5 Ag<sup>-1</sup>. Thus, the synthesized Ni-silicate composite is a promising candidate material for LIB anode.</div></div>","PeriodicalId":381,"journal":{"name":"Journal of the Taiwan Institute of Chemical Engineers","volume":"165 ","pages":"Article 105814"},"PeriodicalIF":5.5,"publicationDate":"2024-11-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142572556","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-11-01DOI: 10.1016/j.jtice.2024.105812
Chen Chen , Qingzhu Zhang , Guixian Li , Song Lin , Xiaoqiu Liu , Ning Liang
Background
Triclosan (TCS) is a common antimicrobial additive. Despite its low concentration, its frequent use and widespread application result in significant amounts of TCS entering the environment. In the environment, TCS undergoes photodegradation, producing harmful byproducts such as dioxin-like substances and chloroform, which are highly toxic. Due to TCS's lipophilic nature, it easily accumulates in animal tissues, ultimately posing a threat to human health. Therefore, there is an urgent need for a powerful and efficient method to remove TCS from water bodies.
Methods
Using discarded traditional Chinese medicine as raw material and KOH as an activator, biochar was prepared. The material was characterized, and its adsorption capacity for TCS under various conditions was evaluated.
Significant Findings
Compared to the existing biochar materials' TCS adsorption capacity (13.9 mg/g-395.2 mg g-1), the KOH-modified biochar (KMBC) in this study demonstrated an exceptional adsorption capacity of 639.13 mg g-1 for TCS. KMBC can swiftly remove 98 % of TCS from water within 30 min, even with a minimal biochar concentration of 0.225 g/L, and it exhibits strong anti-interference capabilities. Most importantly, water treated with KMBC is virtually free of TCS, effectively mitigating its impact on environmental organisms.
{"title":"High-performance biochar derived from the leaves of Quercus dentata thunb for triclosan removal","authors":"Chen Chen , Qingzhu Zhang , Guixian Li , Song Lin , Xiaoqiu Liu , Ning Liang","doi":"10.1016/j.jtice.2024.105812","DOIUrl":"10.1016/j.jtice.2024.105812","url":null,"abstract":"<div><h3>Background</h3><div>Triclosan (TCS) is a common antimicrobial additive. Despite its low concentration, its frequent use and widespread application result in significant amounts of TCS entering the environment. In the environment, TCS undergoes photodegradation, producing harmful byproducts such as dioxin-like substances and chloroform, which are highly toxic. Due to TCS's lipophilic nature, it easily accumulates in animal tissues, ultimately posing a threat to human health. Therefore, there is an urgent need for a powerful and efficient method to remove TCS from water bodies.</div></div><div><h3>Methods</h3><div>Using discarded traditional Chinese medicine as raw material and KOH as an activator, biochar was prepared. The material was characterized, and its adsorption capacity for TCS under various conditions was evaluated.</div></div><div><h3>Significant Findings</h3><div>Compared to the existing biochar materials' TCS adsorption capacity (13.9 mg/g-395.2 mg g<sup>-1</sup>), the KOH-modified biochar (KMBC) in this study demonstrated an exceptional adsorption capacity of 639.13 mg g<sup>-1</sup> for TCS. KMBC can swiftly remove 98 % of TCS from water within 30 min, even with a minimal biochar concentration of 0.225 g/L, and it exhibits strong anti-interference capabilities. Most importantly, water treated with KMBC is virtually free of TCS, effectively mitigating its impact on environmental organisms.</div></div>","PeriodicalId":381,"journal":{"name":"Journal of the Taiwan Institute of Chemical Engineers","volume":"165 ","pages":"Article 105812"},"PeriodicalIF":5.5,"publicationDate":"2024-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142572555","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Photocatalytic oxidation is a green method for water purification. However, the operation of traditional photocatalysts depends on exposure to UV radiation, which only forms a small portion of the spectrum comprising sunlight. The expansion of photocatalyst absorption to the visible range of light could greatly improve the efficiency and economic viability of the process.
Methods
The photocatalyst was prepared by first synthesising SrTiO3 nanoparticles by chemical precipitation followed by calcination. Then, SrTiO3 was doped with aluminium using a flux method with Al2O3 and SrCl2 at 1150 °C. Finally, the dual co-catalysts, Rh/Cr2O3 and CoOOH, were photodeposited onto SrTiO3@Al via sequential irradiation.
Significant findings
The Rh/Cr2O3/SrTiO3@Al/CoOOH nanocomposite degraded 87% of methylene blue (MB) (10 mg/L) under visible light in 1 h, a 3.3-fold improvement over pure SrTiO3 and 2.1-fold over a similar commercial composite. This enhancement is due to efficient charge separation resulting from Al doping and improved carrier transport as a result of the anisotropic deposition of the co-catalysts. Optimisation showed that 20 mg of photocatalyst in 50 mL of MB solution (5 mg/L) degraded 100% thereof within 45 min. DFT calculations showed uneven electron distribution in SrTiO3′s conduction band and structural changes with Al doping, further enhancing photocatalytic activity.
{"title":"Efficient photocatalytic degradation of methylene blue via synergistic dual co-catalyst on SrTiO3@Al under visible light: Experimental and DFT study","authors":"Zhengisbek Kuspanov , Aigerim Serik , Nikita Matsko , Madina Bissenova , Aidos Issadykov , Mukhtar Yeleuov , Chingis Daulbayev","doi":"10.1016/j.jtice.2024.105806","DOIUrl":"10.1016/j.jtice.2024.105806","url":null,"abstract":"<div><h3>Background</h3><div>Photocatalytic oxidation is a green method for water purification. However, the operation of traditional photocatalysts depends on exposure to UV radiation, which only forms a small portion of the spectrum comprising sunlight. The expansion of photocatalyst absorption to the visible range of light could greatly improve the efficiency and economic viability of the process.</div></div><div><h3>Methods</h3><div>The photocatalyst was prepared by first synthesising SrTiO<sub>3</sub> nanoparticles by chemical precipitation followed by calcination. Then, SrTiO<sub>3</sub> was doped with aluminium using a flux method with Al<sub>2</sub>O<sub>3</sub> and SrCl<sub>2</sub> at 1150 °C. Finally, the dual co-catalysts, Rh/Cr<sub>2</sub>O<sub>3</sub> and CoOOH, were photodeposited onto SrTiO<sub>3</sub>@Al via sequential irradiation.</div></div><div><h3>Significant findings</h3><div>The Rh/Cr<sub>2</sub>O<sub>3</sub>/SrTiO<sub>3</sub>@Al/CoOOH nanocomposite degraded 87% of methylene blue (MB) (10 mg/L) under visible light in 1 h, a 3.3-fold improvement over pure SrTiO3 and 2.1-fold over a similar commercial composite. This enhancement is due to efficient charge separation resulting from Al doping and improved carrier transport as a result of the anisotropic deposition of the co-catalysts. Optimisation showed that 20 mg of photocatalyst in 50 mL of MB solution (5 mg/L) degraded 100% thereof within 45 min. DFT calculations showed uneven electron distribution in SrTiO3′s conduction band and structural changes with Al doping, further enhancing photocatalytic activity.</div></div>","PeriodicalId":381,"journal":{"name":"Journal of the Taiwan Institute of Chemical Engineers","volume":"165 ","pages":"Article 105806"},"PeriodicalIF":5.5,"publicationDate":"2024-10-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142554827","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-10-30DOI: 10.1016/j.jtice.2024.105811
Melvin Xin Jie Wee , Bridgid Lai Fui Chin , Agus Saptoro , Jiuan Jing Chew , Jaka Sunarso , Suzana Yusup , Abhishek Sharma
Background
Catalytic co-pyrolysis process is an emerging thermochemical pathway to convert multiple wastes, such as biomass and municipal solid wastes into value added fuels. The ecology would suffer from mishandling of these materials, leading to landfills and microplastic contamination. However, the co-pyrolysis of the surgical face mask (SFM) wastes with biomass remains a niche research area.
Methods
The co-pyrolysis performance, kinetics and thermodynamics of oil palm empty fruit bunches (EFB) and SFM mixture were evaluated via thermogravimetric analysis (TGA) approach at heating rates from 10 to 100 °C.min−1 with weight ratio of 1:1, 4:1 and 1:4. Additionally, the development of the artificial neural network (ANN) model to represent the thermal degradation behaviour of the overall catalytic co-pyrolysis process for EFB and SFM mixtures.
Significant findings
The highest average pyrolysis performance index, Ir value of 8.11 was found in the reaction at 50 °C.min−1. The weight change, ΔWTGA showed the thermal degradation behaviour of EFB and SFM co-pyrolysis exhibited predominantly inhibitory characteristics, as the experimental values were higher than the theoretical values. Moreover, the HZSM-5 catalyst showed great affinity towards the sample matrix, achieving high reduction of activation energy and difference in enthalpy of 13.54 % and 14.94 %, respectively.
{"title":"Catalytic co-pyrolysis of oil palm empty fruit bunches (EFB) and surgical face mask (SFM) wastes: Thermo-kinetic study, ANN model fitting, and synergistic effect","authors":"Melvin Xin Jie Wee , Bridgid Lai Fui Chin , Agus Saptoro , Jiuan Jing Chew , Jaka Sunarso , Suzana Yusup , Abhishek Sharma","doi":"10.1016/j.jtice.2024.105811","DOIUrl":"10.1016/j.jtice.2024.105811","url":null,"abstract":"<div><h3>Background</h3><div>Catalytic co-pyrolysis process is an emerging thermochemical pathway to convert multiple wastes, such as biomass and municipal solid wastes into value added fuels. The ecology would suffer from mishandling of these materials, leading to landfills and microplastic contamination. However, the co-pyrolysis of the surgical face mask (SFM) wastes with biomass remains a niche research area.</div></div><div><h3>Methods</h3><div>The co-pyrolysis performance, kinetics and thermodynamics of oil palm empty fruit bunches (EFB) and SFM mixture were evaluated via thermogravimetric analysis (TGA) approach at heating rates from 10 to 100 °C.min<sup>−1</sup> with weight ratio of 1:1, 4:1 and 1:4. Additionally, the development of the artificial neural network (ANN) model to represent the thermal degradation behaviour of the overall catalytic co-pyrolysis process for EFB and SFM mixtures.</div></div><div><h3>Significant findings</h3><div>The highest average pyrolysis performance index, <em>I<sub>r</sub></em> value of 8.11 was found in the reaction at 50 °C.min<sup>−1</sup>. The weight change, <em>ΔW<sub>TGA</sub></em> showed the thermal degradation behaviour of EFB and SFM co-pyrolysis exhibited predominantly inhibitory characteristics, as the experimental values were higher than the theoretical values. Moreover, the HZSM-5 catalyst showed great affinity towards the sample matrix, achieving high reduction of activation energy and difference in enthalpy of 13.54 % and 14.94 %, respectively.</div></div>","PeriodicalId":381,"journal":{"name":"Journal of the Taiwan Institute of Chemical Engineers","volume":"165 ","pages":"Article 105811"},"PeriodicalIF":5.5,"publicationDate":"2024-10-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142554828","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Efficient heat transfer is vital in cooling systems to prevent overheating and maintain optimal performance. This study explores an H-shaped enclosure design incorporating conducting solid blocks and hybrid nanofluids (HNFs) based on a water-ethylene glycol (60:40) mixture. This coolant composition improves thermal stability by lowering the freezing point and raising the boiling point. The research focuses on magnetohydrodynamic double-diffusive natural convection (MHD-DDNC), analyzing the interactions between porous media, conducting blocks, and HNFs in the presence of a magnetic field.
Methods
Numerical analysis was performed using the non-orthogonal multi-relaxation time lattice Boltzmann method (NMRT-LBM). The D2Q9 scheme was applied for density and velocity, while D2Q5 was used for temperature and concentration fields. Key parameters such as Darcy number (Da), nanoparticle volume fraction (ϕ), buoyancy ratio (Br), Soret (Sr) and Dufour (Dr) numbers, thermal conductivity ratio (Rk), and mass transfer coefficient ratio (Rd) were analyzed to understand their impact on heat and mass transfer within the enclosure.
Significant findings
The results demonstrate that increasing ϕ and Br significantly enhances both heat and mass transfer rates, with improvements of up to 16.65% in the average Nusselt number () and 12.45% in the average Sherwood number (). Increasing Da intensifies horizontal velocity and enhances nanofluid circulation, leading to a 12.91% improvement in and a 9.59% increase in at ϕ = 4%. The Soret number reduces by 1.01% but rises by 26.65%, while the Dufour number yields the opposite. Varying Rk from 0.1 to 10 at ϕ = 4% increases thermal performance by 33.53% and mass transfer by 9.61%. Increasing Rd from 0.1 to 10 improves by 8.07% and by 31.53%, demonstrating the strong influence of these parameters on heat and mass transfer performance. These results highlight the potential applications for optimizing automotive cooling systems, regenerative exchangers, and HVAC heat exchangers.
{"title":"Lattice Boltzmann simulation of magnetohydrodynamic double-diffusive convection hybrid nanofluid flow through solid blocks in a porous H-shaped enclosure","authors":"Souhail Souai , Md. Mamun Molla , Sabrine Garrouri , Soraya Trabelsi , Ezeddine Sediki","doi":"10.1016/j.jtice.2024.105807","DOIUrl":"10.1016/j.jtice.2024.105807","url":null,"abstract":"<div><h3>Background</h3><div>Efficient heat transfer is vital in cooling systems to prevent overheating and maintain optimal performance. This study explores an H-shaped enclosure design incorporating conducting solid blocks and hybrid nanofluids (HNFs) based on a water-ethylene glycol (60:40) mixture. This coolant composition improves thermal stability by lowering the freezing point and raising the boiling point. The research focuses on magnetohydrodynamic double-diffusive natural convection (MHD-DDNC), analyzing the interactions between porous media, conducting blocks, and HNFs in the presence of a magnetic field.</div></div><div><h3>Methods</h3><div>Numerical analysis was performed using the non-orthogonal multi-relaxation time lattice Boltzmann method (NMRT-LBM). The D2Q9 scheme was applied for density and velocity, while D2Q5 was used for temperature and concentration fields. Key parameters such as Darcy number (Da), nanoparticle volume fraction (ϕ), buoyancy ratio (Br), Soret (<em>S<sub>r</sub></em>) and Dufour (<em>D<sub>r</sub></em>) numbers, thermal conductivity ratio (R<sub>k</sub>), and mass transfer coefficient ratio (R<sub>d</sub>) were analyzed to understand their impact on heat and mass transfer within the enclosure.</div></div><div><h3>Significant findings</h3><div>The results demonstrate that increasing ϕ and Br significantly enhances both heat and mass transfer rates, with improvements of up to 16.65% in the average Nusselt number (<span><math><mover><mrow><mi>N</mi><mi>u</mi></mrow><mo>‾</mo></mover></math></span>) and 12.45% in the average Sherwood number (<span><math><mover><mrow><mi>S</mi><mi>h</mi></mrow><mo>‾</mo></mover></math></span>). Increasing Da intensifies horizontal velocity and enhances nanofluid circulation, leading to a 12.91% improvement in <span><math><mover><mrow><mi>N</mi><mi>u</mi></mrow><mo>‾</mo></mover></math></span> and a 9.59% increase in <span><math><mover><mrow><mi>S</mi><mi>h</mi></mrow><mo>‾</mo></mover></math></span> at ϕ = 4%. The Soret number reduces <span><math><mover><mrow><mi>N</mi><mi>u</mi></mrow><mo>‾</mo></mover></math></span> by 1.01% but rises <span><math><mover><mrow><mi>S</mi><mi>h</mi></mrow><mo>‾</mo></mover></math></span> by 26.65%, while the Dufour number yields the opposite. Varying R<sub>k</sub> from 0.1 to 10 at ϕ = 4% increases thermal performance by 33.53% and mass transfer by 9.61%. Increasing R<sub>d</sub> from 0.1 to 10 improves <span><math><mover><mrow><mi>N</mi><mi>u</mi></mrow><mo>‾</mo></mover></math></span> by 8.07% and <span><math><mover><mrow><mi>S</mi><mi>h</mi></mrow><mo>‾</mo></mover></math></span> by 31.53%, demonstrating the strong influence of these parameters on heat and mass transfer performance. These results highlight the potential applications for optimizing automotive cooling systems, regenerative exchangers, and HVAC heat exchangers.</div></div>","PeriodicalId":381,"journal":{"name":"Journal of the Taiwan Institute of Chemical Engineers","volume":"165 ","pages":"Article 105807"},"PeriodicalIF":5.5,"publicationDate":"2024-10-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142538641","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-10-28DOI: 10.1016/j.jtice.2024.105805
Muhammad Altaf Nazir , Zainab Shafiq , Sami Ullah , Aziz ur Rehman , Tayyaba Najam , Mostafa A. Iismail , Rashid Iqbal , P. Rosaiah , Bhargav Akkinepally , Syed Shoaib Ahmad Shah
Background
Boric acid may react with cis covalently bound molecules to produce stable cyclic esters of 5 or 6 members, when exposed to an alkaline environment. In an acidic environment, the cyclic ester opens and releases the cis-diol compound. For these reasons, the synthesis and design of boron affinity materials that exhibit excellent selectivity, efficiency, and enrichment performance have drawn a lot of interest. Scientists have recently created a variety of boron affinity materials that enable the production of highly selectively enriched cis-diol molecules. The chromatographic separations and preparation of samples in processing regions make extensive use of metal-organic frameworks (MOFs) and covalent organic frameworks (COFs) due to their outstanding thermal and chemical stability, extremely porous, significant specific surface area, adjustable pore size and variable framework structure.
Methods
To create MOFs and COFs materials with selectivity for cis-diol molecules, boric acid-modified MOFs and COFs of diverse structures and kinds have been developed. The forms, synthesis pathways, and uses of boric acid-modified MOFs and COFs, including "metal ligand-fragment co-assembly" and "post-synthetic modification," are discussed in this review. It also focuses on the "bottom-up" modification method of porous materials with boric acid functionality.
Significant Findings
This review mainly summarizes the advancement of boric acid-modified MOFs and COFs materials and how they are used in biological and chemical research. Additionally, it compares the benefits, drawbacks, and advantages of MOFs and COFs which are boric acid-functionalized. This article aims to provide researchers an extensive knowledge of the current status of the research on materials with porous organic frameworks functionalized with boric acid, help them grasp concepts and methods of synthesis, offer some theoretical direction and technical assistance for their applications, and facilitate the development of porous organic frameworks functionalized with boric acid.
{"title":"Porous metal/covalent organic framework materials: Research progress on enrichment and separation of cis-diol compounds","authors":"Muhammad Altaf Nazir , Zainab Shafiq , Sami Ullah , Aziz ur Rehman , Tayyaba Najam , Mostafa A. Iismail , Rashid Iqbal , P. Rosaiah , Bhargav Akkinepally , Syed Shoaib Ahmad Shah","doi":"10.1016/j.jtice.2024.105805","DOIUrl":"10.1016/j.jtice.2024.105805","url":null,"abstract":"<div><h3>Background</h3><div>Boric acid may react with <em>cis</em> covalently bound molecules to produce stable cyclic esters of 5 or 6 members, when exposed to an alkaline environment. In an acidic environment, the cyclic ester opens and releases the cis-diol compound. For these reasons, the synthesis and design of boron affinity materials that exhibit excellent selectivity, efficiency, and enrichment performance have drawn a lot of interest. Scientists have recently created a variety of boron affinity materials that enable the production of highly selectively enriched cis-diol molecules. The chromatographic separations and preparation of samples in processing regions make extensive use of metal-organic frameworks (MOFs) and covalent organic frameworks (COFs) due to their outstanding thermal and chemical stability, extremely porous, significant specific surface area, adjustable pore size and variable framework structure.</div></div><div><h3>Methods</h3><div>To create MOFs and COFs materials with selectivity for cis-diol molecules, boric acid-modified MOFs and COFs of diverse structures and kinds have been developed. The forms, synthesis pathways, and uses of boric acid-modified MOFs and COFs, including \"metal ligand-fragment co-assembly\" and \"post-synthetic modification,\" are discussed in this review. It also focuses on the \"bottom-up\" modification method of porous materials with boric acid functionality.</div></div><div><h3>Significant Findings</h3><div>This review mainly summarizes the advancement of boric acid-modified MOFs and COFs materials and how they are used in biological and chemical research. Additionally, it compares the benefits, drawbacks, and advantages of MOFs and COFs which are boric acid-functionalized. This article aims to provide researchers an extensive knowledge of the current status of the research on materials with porous organic frameworks functionalized with boric acid, help them grasp concepts and methods of synthesis, offer some theoretical direction and technical assistance for their applications, and facilitate the development of porous organic frameworks functionalized with boric acid.</div></div>","PeriodicalId":381,"journal":{"name":"Journal of the Taiwan Institute of Chemical Engineers","volume":"165 ","pages":"Article 105805"},"PeriodicalIF":5.5,"publicationDate":"2024-10-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142534945","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-10-28DOI: 10.1016/j.jtice.2024.105794
Yuanyuan Dong , Shuang Yang , Wenpeng Jiang , Hu Zhang , Jiaxin Liu , Hui Li , Jun Yang
Background
Ammonia (NH3) serves as a promising medium for hydrogen storage and transportation, addressing the challenges associated with these processes. However, the ammonia decomposition reaction urgently requires catalysts with high activity and stability.
Methods
Here, we present a synergistic strategy for the preparation of a highly dispersed Ru/Al2O3 catalyst using an atmosphere-induced method. Under an oxidizing atmosphere (Ru/Al2O3-O), the particle size of RuO2 exceeds 10 nm. Conversely, by oxygen vacancies anchoring in a reducing atmosphere, highly dispersed and structurally stable Ru catalysts with particle sizes < 2 nm can be prepared. HRTEM, XPS, TPR and XRD have been employed to elucidate the morphology and electronic structure of the Ru metal.
Significant Findings
This research investigated the impact of atmosphere-induced effects on the particle size and ammonia decomposition activity of Ru/γ-Al2O3 catalysts. A reducing atmosphere induced the formation of oxygen vacancies in the alumina support, leading to highly dispersed Ru/γ-Al2O3 catalysts. The interaction between Ru species and oxygen vacancies led to Ru particles of catalyst smaller than 2 nm and a stable structure. The removal of Cl ions from the Ru-based catalyst positively influenced the enhancement of ammonia decomposition activity. XPS and TPD results indicated that the introduction of the alkali metal potassium increased the electron density of Ru species, facilitating the ammonia decomposition reaction process. The K-Ru/γ-Al2O3-RW catalyst achieved a conversion rate of 97 % at 450 °C at a flow rate of 18,000 mL/gcat/h. Stability tests showed that the K-Ru/γ-Al2O3-RW catalyst did not deactivate after undergoing a 700-hour lifetime test. This work provides an effective method for synthesizing Ru-based catalysts to enhance ammonia decomposition for hydrogen production.
{"title":"Highly dispersed Ru nanoparticles induced by the atmosphere for hydrogen production from ammonia decomposition","authors":"Yuanyuan Dong , Shuang Yang , Wenpeng Jiang , Hu Zhang , Jiaxin Liu , Hui Li , Jun Yang","doi":"10.1016/j.jtice.2024.105794","DOIUrl":"10.1016/j.jtice.2024.105794","url":null,"abstract":"<div><h3>Background</h3><div>Ammonia (NH<sub>3</sub>) serves as a promising medium for hydrogen storage and transportation, addressing the challenges associated with these processes. However, the ammonia decomposition reaction urgently requires catalysts with high activity and stability.</div></div><div><h3>Methods</h3><div>Here, we present a synergistic strategy for the preparation of a highly dispersed Ru/Al<sub>2</sub>O<sub>3</sub> catalyst using an atmosphere-induced method. Under an oxidizing atmosphere (Ru/Al<sub>2</sub>O<sub>3</sub>-O), the particle size of RuO<sub>2</sub> exceeds 10 nm. Conversely, by oxygen vacancies anchoring in a reducing atmosphere, highly dispersed and structurally stable Ru catalysts with particle sizes < 2 nm can be prepared. HRTEM, XPS, TPR and XRD have been employed to elucidate the morphology and electronic structure of the Ru metal.</div></div><div><h3>Significant Findings</h3><div>This research investigated the impact of atmosphere-induced effects on the particle size and ammonia decomposition activity of Ru/γ-Al<sub>2</sub>O<sub>3</sub> catalysts. A reducing atmosphere induced the formation of oxygen vacancies in the alumina support, leading to highly dispersed Ru/γ-Al<sub>2</sub>O<sub>3</sub> catalysts. The interaction between Ru species and oxygen vacancies led to Ru particles of catalyst smaller than 2 nm and a stable structure. The removal of Cl ions from the Ru-based catalyst positively influenced the enhancement of ammonia decomposition activity. XPS and TPD results indicated that the introduction of the alkali metal potassium increased the electron density of Ru species, facilitating the ammonia decomposition reaction process. The K-Ru/γ-Al<sub>2</sub>O<sub>3</sub>-RW catalyst achieved a conversion rate of 97 % at 450 °C at a flow rate of 18,000 mL/g<sub>cat</sub>/h. Stability tests showed that the K-Ru/γ-Al<sub>2</sub>O<sub>3</sub>-RW catalyst did not deactivate after undergoing a 700-hour lifetime test. This work provides an effective method for synthesizing Ru-based catalysts to enhance ammonia decomposition for hydrogen production.</div></div>","PeriodicalId":381,"journal":{"name":"Journal of the Taiwan Institute of Chemical Engineers","volume":"165 ","pages":"Article 105794"},"PeriodicalIF":5.5,"publicationDate":"2024-10-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142535001","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-10-25DOI: 10.1016/j.jtice.2024.105803
Gerrard Nkamuhebwa , Ahmed Abd El-Moneim , Hamdy Abo Ali Hassan , Mohsen A. Hassan
Background
Since its discovery in 2014, laser induced graphene (LIG) has gained a lot of interest from research institutions and the industry as a result of its single-step fabrication process and tailorable properties. Nonetheless, LIG's brittle nature makes it susceptible to any mechanical disturbances thus shearing off from the polyimide (PI) sheet surface. This limits its applicability in electrothermal heating and other applications requiring high flexibility. Therefore, there is a need to enhance LIG's robustness on the precursor surface.
Methods
To overcome this, LIG films were fabricated from PI using a 10.6 µm CO2 laser machine and polydimethylsiloxane (PDMS) contents were infused into the LIG structure by spin coating to form LIG/PDMS films. Furthermore, the adhesion strength of LIG/PDMS films was further improved by making micro scratches on the substrate surface by pressing the PI sheets in between the jaws of a Universal Testing Machine (UTM). The joule heating of LIG and LIG/PDMS heaters was evaluated before, during, and after mechanical testing. Theoretical models (heat balance and Ansys Finite Element, FE) were also performed to validate experimental results.
Significant findings
At an input DC voltage of 8 V, the LIG/PDMS with 50 μL PDMS and LIG heaters generated saturation temperatures of 250 and 308.86 °C, respectively. Much as the saturation temperatures were lower for LIG/PDMS heaters, their mechanical strength was enhanced in comparison with the LIG heaters. LIG/PDMS films could undergo more bending cycles (4800) than LIG films (2400). Additionally, LIG/PDMS film accommodated more stress (⁓ 0.16 Mpa) than LIG film (⁓ 0.04 Mpa) after tensile tests. Interestingly, the LIG/PDMS heater's electrothermal performance was better than that of LIG heater after tension. The heat balance equation and simulation results showed a tight match with experimental generated temperatures, verifying the approach's trustworthiness. Hence, the demonstrated effectiveness and efficiency of LIG-based heaters with high flexibility under various mechanical stresses open new possibilities for diverse electronic applications.
背景自 2014 年被发现以来，激光诱导石墨烯（LIG）因其一步法制造工艺和可定制的特性而受到研究机构和业界的广泛关注。然而，LIG 的脆性使其容易受到任何机械干扰，从而从聚酰亚胺（PI）片表面剪切下来。这限制了它在电热加热和其他需要高灵活性的应用中的适用性。为了克服这一问题，我们使用 10.6 µm CO2 激光机从 PI 制备了 LIG 薄膜，并通过旋涂将聚二甲基硅氧烷（PDMS）注入 LIG 结构，形成 LIG/PDMS 薄膜。此外，还通过在万能试验机（UTM）的夹钳间按压 PI 片，使其在基底表面产生微小划痕，进一步提高了 LIG/PDMS 薄膜的粘附强度。在机械测试之前、期间和之后，对 LIG 和 LIG/PDMS 加热器的焦耳热进行了评估。重要发现在输入直流电压为 8 V 时，带有 50 μL PDMS 的 LIG/PDMS 和 LIG 加热器产生的饱和温度分别为 250 和 308.86 °C。与 LIG 加热器相比，LIG/PDMS 加热器的饱和温度更低，其机械强度也更高。与 LIG 薄膜（2400 次）相比，LIG/PDMS 薄膜可以经受更多的弯曲循环（4800 次）。此外，在拉伸测试后，LIG/PDMS 薄膜比 LIG 薄膜（⁓ 0.04 Mpa）能承受更大的应力（⁓ 0.16 Mpa）。有趣的是，拉伸后 LIG/PDMS 加热器的电热性能优于 LIG 加热器。热平衡方程和模拟结果显示与实验产生的温度非常吻合，验证了该方法的可靠性。因此，在各种机械应力下具有高柔韧性的 LIG 基加热器的有效性和效率为各种电子应用开辟了新的可能性。
{"title":"Effect of polydimethylsiloxane content on the electrothermal performance and tensile strength of laser induced graphene films: Experimental and theoretical","authors":"Gerrard Nkamuhebwa , Ahmed Abd El-Moneim , Hamdy Abo Ali Hassan , Mohsen A. Hassan","doi":"10.1016/j.jtice.2024.105803","DOIUrl":"10.1016/j.jtice.2024.105803","url":null,"abstract":"<div><h3>Background</h3><div>Since its discovery in 2014, laser induced graphene (LIG) has gained a lot of interest from research institutions and the industry as a result of its single-step fabrication process and tailorable properties. Nonetheless, LIG's brittle nature makes it susceptible to any mechanical disturbances thus shearing off from the polyimide (PI) sheet surface. This limits its applicability in electrothermal heating and other applications requiring high flexibility. Therefore, there is a need to enhance LIG's robustness on the precursor surface.</div></div><div><h3>Methods</h3><div>To overcome this, LIG films were fabricated from PI using a 10.6 µm CO<sub>2</sub> laser machine and polydimethylsiloxane (PDMS) contents were infused into the LIG structure by spin coating to form LIG/PDMS films. Furthermore, the adhesion strength of LIG/PDMS films was further improved by making micro scratches on the substrate surface by pressing the PI sheets in between the jaws of a Universal Testing Machine (UTM). The joule heating of LIG and LIG/PDMS heaters was evaluated before, during, and after mechanical testing. Theoretical models (heat balance and Ansys Finite Element, FE) were also performed to validate experimental results.</div></div><div><h3>Significant findings</h3><div>At an input DC voltage of 8 V, the LIG/PDMS with 50 μL PDMS and LIG heaters generated saturation temperatures of 250 and 308.86 °C, respectively. Much as the saturation temperatures were lower for LIG/PDMS heaters, their mechanical strength was enhanced in comparison with the LIG heaters. LIG/PDMS films could undergo more bending cycles (4800) than LIG films (2400). Additionally, LIG/PDMS film accommodated more stress (⁓ 0.16 Mpa) than LIG film (⁓ 0.04 Mpa) after tensile tests. Interestingly, the LIG/PDMS heater's electrothermal performance was better than that of LIG heater after tension. The heat balance equation and simulation results showed a tight match with experimental generated temperatures, verifying the approach's trustworthiness. Hence, the demonstrated effectiveness and efficiency of LIG-based heaters with high flexibility under various mechanical stresses open new possibilities for diverse electronic applications.</div></div>","PeriodicalId":381,"journal":{"name":"Journal of the Taiwan Institute of Chemical Engineers","volume":"165 ","pages":"Article 105803"},"PeriodicalIF":5.5,"publicationDate":"2024-10-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142534941","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-10-25DOI: 10.1016/j.jtice.2024.105784
Siyu Tang, Hongbo Shi, Bing Song, Yang Tao
Background
Fault diagnosis is crucial for industrial maintenance, but existing supervised methods rely on extensive data, which is often difficult to collect. The challenge of gathering comprehensive fault samples limits the performance of traditional fault diagnosis methods.
Method
In this paper, we propose a fault diagnosis method named ZSIDM-OC to address the zero-shot problem in industrial processes, specifically concerning the domain shift issue. This novel framework includes three key modules: the Hierarchical Global-Local Feature Integration Module for capturing both global and local features of the fault data; the Prototype-Based Discriminative Loss Module, which reduces feature redundancy and enhances the model's ability to recognize unknown fault classes; and the Bidirectional Consistency Enforcement Module ensuring consistent data distribution in both low-dimensional and high-dimensional spaces, thereby reducing domain shift.
Significant Findings
Our analysis indicates that the domain shift problem is inevitable in a zero-shot setting and significantly affects the performance of existing methods. Experimental results demonstrate that under zero-shot conditions, ZSIDM-OC offers significant advantages on both the Energy Storage Plant dataset and the Tennessee Eastman dataset. This method effectively mitigates the challenges posed by domain shift and limited fault sample availability, showcasing its potential to improve fault diagnosis in industrial processes.
{"title":"A zero-shot industrial process fault diagnosis method based on domain-shift constraints","authors":"Siyu Tang, Hongbo Shi, Bing Song, Yang Tao","doi":"10.1016/j.jtice.2024.105784","DOIUrl":"10.1016/j.jtice.2024.105784","url":null,"abstract":"<div><h3>Background</h3><div>Fault diagnosis is crucial for industrial maintenance, but existing supervised methods rely on extensive data, which is often difficult to collect. The challenge of gathering comprehensive fault samples limits the performance of traditional fault diagnosis methods.</div></div><div><h3>Method</h3><div>In this paper, we propose a fault diagnosis method named ZSIDM-OC to address the zero-shot problem in industrial processes, specifically concerning the domain shift issue. This novel framework includes three key modules: the Hierarchical Global-Local Feature Integration Module for capturing both global and local features of the fault data; the Prototype-Based Discriminative Loss Module, which reduces feature redundancy and enhances the model's ability to recognize unknown fault classes; and the Bidirectional Consistency Enforcement Module ensuring consistent data distribution in both low-dimensional and high-dimensional spaces, thereby reducing domain shift.</div></div><div><h3>Significant Findings</h3><div>Our analysis indicates that the domain shift problem is inevitable in a zero-shot setting and significantly affects the performance of existing methods. Experimental results demonstrate that under zero-shot conditions, ZSIDM-OC offers significant advantages on both the Energy Storage Plant dataset and the Tennessee Eastman dataset. This method effectively mitigates the challenges posed by domain shift and limited fault sample availability, showcasing its potential to improve fault diagnosis in industrial processes.</div></div>","PeriodicalId":381,"journal":{"name":"Journal of the Taiwan Institute of Chemical Engineers","volume":"165 ","pages":"Article 105784"},"PeriodicalIF":5.5,"publicationDate":"2024-10-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142534942","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
In CeO2−MnO2-based electrocatalysts for oxygen evolution, addressing issues of stability and electron transfer delay is crucial for practical applications. The modification of electronic structures through single metal oxides (W, Ni, and Mn) can potentially enhance electron mobility and improve metal-support interactions, thus boosting electrocatalytic activity.
Method
To this end, CeO2−MnO2 nanorods intercalated with single metal atom oxides (SMAO) and supported by a reduced graphene oxide (rGO) layer (designated WNiMnCeMn-R-3) were synthesized using a sonication process.
Significant findings
This catalyst composition, particularly the WNiMnCeMn-R-3 variant with a CeO2 to MnO2 ratio of 15:45 %, exhibited significantly lower overpotential (280 mV) and Tafel slope (65.18 mV dec−1) at a current density of 10 mA cm−2 compared to other nanocomposites like CeO2−MnO2, CeO2−MnO2-rGO, WNiMnCeMn-R-1 (CeO2:MnO2 as 45:15 %) and WNiMnCeMn-R-2 (CeO2:MnO2 as 30:30 %). Exceptional electrochemical stability was demonstrated during a 24 h chronopotentiometry test over 2000 cyclic voltammetry cycles. The outstanding catalytic performance and stability of WNiMnCeMn-R-3 can be attributed to the synergistic effects of SMAO, CeO2, MnO2, and rGO layers, which collectively enhance the intrinsic catalytic activity and facilitate faster electron transport. This study aims to advance the development of electrochemical catalysts utilizing metal oxides, specifically SMAOs anchored onto rGO.
{"title":"Enhanced oxygen evolution performance by single metal (tungsten, nickel and manganese) atom oxides anchored nanorods of CeO2-MnO2-rGO as electrocatalysts","authors":"Karuppaiah Selvakumar , Muthuraj Arunpandian , Yueshuai Wang , Tae Hwan Oh , Vanthana Jeyasingh , Aboud Ahmed Awadh Bahajjaj , Meenakshisundaram Swaminathan","doi":"10.1016/j.jtice.2024.105800","DOIUrl":"10.1016/j.jtice.2024.105800","url":null,"abstract":"<div><h3>Background</h3><div>In CeO<sub>2−</sub>MnO<sub>2</sub>-based electrocatalysts for oxygen evolution, addressing issues of stability and electron transfer delay is crucial for practical applications. The modification of electronic structures through single metal oxides (W, Ni, and Mn) can potentially enhance electron mobility and improve metal-support interactions, thus boosting electrocatalytic activity.</div></div><div><h3>Method</h3><div>To this end, CeO<sub>2−</sub>MnO<sub>2</sub> nanorods intercalated with single metal atom oxides (SMAO) and supported by a reduced graphene oxide (rGO) layer (designated WNiMnCeMn-R-3) were synthesized using a sonication process.</div></div><div><h3>Significant findings</h3><div>This catalyst composition, particularly the WNiMnCeMn-R-3 variant with a CeO<sub>2</sub> to MnO<sub>2</sub> ratio of 15:45 %, exhibited significantly lower overpotential (280 mV) and Tafel slope (65.18 mV dec<sup>−1</sup>) at a current density of 10 mA cm<sup>−2</sup> compared to other nanocomposites like CeO<sub>2−</sub>MnO<sub>2</sub>, CeO<sub>2−</sub>MnO<sub>2</sub>-rGO, WNiMnCeMn-R-1 (CeO<sub>2</sub>:MnO<sub>2</sub> as 45:15 %) and WNiMnCeMn-R-2 (CeO<sub>2</sub>:MnO<sub>2</sub> as 30:30 %). Exceptional electrochemical stability was demonstrated during a 24 h chronopotentiometry test over 2000 cyclic voltammetry cycles. The outstanding catalytic performance and stability of WNiMnCeMn-R-3 can be attributed to the synergistic effects of SMAO, CeO<sub>2</sub>, MnO<sub>2</sub>, and rGO layers, which collectively enhance the intrinsic catalytic activity and facilitate faster electron transport. This study aims to advance the development of electrochemical catalysts utilizing metal oxides, specifically SMAOs anchored onto rGO.</div></div>","PeriodicalId":381,"journal":{"name":"Journal of the Taiwan Institute of Chemical Engineers","volume":"165 ","pages":"Article 105800"},"PeriodicalIF":5.5,"publicationDate":"2024-10-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142534944","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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