Pub Date : 2025-01-25DOI: 10.1016/j.jiec.2024.06.022
Han-Hung Hsu , Tom Breugelmans , Thomas Cardinaels , Bart Geboes
In this work, an electrolytic reduction route of TiO2 microspheres with a well-defined morphology is reported. The TiO2 microspheres are synthesized via a vibrational droplet coagulation method and are electrochemically reduced in LiCl-Li2O molten salt. The reduction process of the spheres of different size and morphology is investigated. The electrolytic reduction kinetics, the product chemistry and morphological parameters such as outer diameter, total surface area and pore size are investigated and benchmarked to a conventional TiO2 powder feed. Moreover, the reduced TiO2 spheres were investigated by X-ray diffraction, scanning electron microscope and BET method. A core–shell structure was observed in the spheres as an intermediate form during electrolysis when charges below 100 % of the theoretical charge were applied. Raman spectroscopy was performed to identify the composition of the core and the shell to further elucidate the reduction pathway of these TiO2 spheres throughout the electrolysis process. After full electrolytic conversion of the feed material, LiTiO2 microspheres were obtained. The presented reduction route provides a novel pathway to synthesize high purity LiTiO2 for practical applications.
{"title":"Electrolytic reduction in LiCl-Li2O of titania microspheres synthesized via vibrational droplet coagulation: Effect of feed morphology","authors":"Han-Hung Hsu , Tom Breugelmans , Thomas Cardinaels , Bart Geboes","doi":"10.1016/j.jiec.2024.06.022","DOIUrl":"10.1016/j.jiec.2024.06.022","url":null,"abstract":"<div><div>In this work, an electrolytic reduction route of TiO<sub>2</sub><span> microspheres with a well-defined morphology is reported. The TiO</span><sub>2</sub><span> microspheres are synthesized via a vibrational droplet coagulation method and are electrochemically reduced in LiCl-Li</span><sub>2</sub>O molten salt. The reduction process of the spheres of different size and morphology is investigated. The electrolytic reduction kinetics, the product chemistry and morphological parameters such as outer diameter, total surface area and pore size are investigated and benchmarked to a conventional TiO<sub>2</sub> powder feed. Moreover, the reduced TiO<sub>2</sub><span><span> spheres were investigated by X-ray diffraction, scanning electron microscope and BET method. A core–shell structure was observed in the spheres as an intermediate form during electrolysis when charges below 100 % of the theoretical charge were applied. </span>Raman spectroscopy was performed to identify the composition of the core and the shell to further elucidate the reduction pathway of these TiO</span><sub>2</sub> spheres throughout the electrolysis process. After full electrolytic conversion of the feed material, LiTiO<sub>2</sub> microspheres were obtained. The presented reduction route provides a novel pathway to synthesize high purity LiTiO<sub>2</sub> for practical applications.</div></div>","PeriodicalId":363,"journal":{"name":"Journal of Industrial and Engineering Chemistry","volume":"141 ","pages":"Pages 121-129"},"PeriodicalIF":5.9,"publicationDate":"2025-01-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143152503","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 : 2025-01-25DOI: 10.1016/j.jiec.2024.07.003
Yingze Jie , Weike Zhang , Yingge Wang , Zhuanzhuan Liang , Yanqing Yang
A novel n-n type heterojunction BiOCl@COF-1 was synthesized by a facile one-step solvothermal method and used for the degradation of rhodamine B(RhB) in water. The structure, morphology, composition, optical and electrochemical properties of the prepared composites were characterized through various techniques. Compared with the pure BiOCl, the BiOCl@COF-1 composite demonstrated significantly enhanced efficiency and durability for degradation of RhB under visible light. The observed enhancement in photocatalytic activity can be attributed to the synergistic effect of the n-n type heterojunction, which notably improve the visible light absorption efficiency, and the efficient charge separation. Additionally, the possible photodegradation mechanism of RhB was explores based on the characterization results. This work not only offers a promising strategy for the purification of organic wastewater, but also provides an effective approach for the construction of other COF-based n-n type heterojunction.
{"title":"Enhanced degradation of rhodamine B under visible light by BiOCl@COF-1n-n type heterojunction photocatalysts","authors":"Yingze Jie , Weike Zhang , Yingge Wang , Zhuanzhuan Liang , Yanqing Yang","doi":"10.1016/j.jiec.2024.07.003","DOIUrl":"10.1016/j.jiec.2024.07.003","url":null,"abstract":"<div><div>A novel n-n type heterojunction BiOCl@COF-1 was synthesized by a facile one-step solvothermal method and used for the degradation of rhodamine B(RhB) in water. The structure, morphology, composition, optical and electrochemical properties of the prepared composites were characterized through various techniques. Compared with the pure BiOCl, the BiOCl@COF-1 composite demonstrated significantly enhanced efficiency and durability for degradation of RhB under visible light. The observed enhancement in photocatalytic activity can be attributed to the synergistic effect of the n-n type heterojunction, which notably improve the visible light absorption efficiency, and the efficient charge separation. Additionally, the possible photodegradation mechanism of RhB was explores based on the characterization results. This work not only offers a promising strategy for the purification of organic wastewater, but also provides an effective approach for the construction of other COF-based n-n type heterojunction.</div></div>","PeriodicalId":363,"journal":{"name":"Journal of Industrial and Engineering Chemistry","volume":"141 ","pages":"Pages 411-420"},"PeriodicalIF":5.9,"publicationDate":"2025-01-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141712293","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 : 2025-01-25DOI: 10.1016/j.jiec.2024.07.004
Chaewon Kim , Seokwon Hong , Eunmo Ku , Hyun Ju Oh , Byungkyu Jeon , Hoseong Lee , Hyunchul Ahn , Jun Choi , Jihyun Bae , Yeong Og Choi , Byoung-Sun Lee
As airborne particulate matter (PM) such as pathogens and ultrafine dust threaten the human health, air quality control technologies are becoming increasingly important. Herein, poly(vinylidene fluoride-co-hexafluoropropylene) (PVdF-HFP) nanofibers with various fiber diameters and pore size distributions were prepared using various compositions of volatile (acetone) and less volatile N,N-dimethylformamide (DMF) solvent mixtures to design the optimum filtration media. Morphologies and molecular configurations were examined thoroughly with respect to the filtration performance. Among the various solvent compositions, the specimen prepared with the lowest DMF content (denoted as ePVdF-HFP55) showed the best filtration performance, with a filtration efficiency of 99.95% and a pressure drop of 29.0 mmH2O. The quality factor (QF) of ePVdF-HFP55 (0.0266 Pa−1) is superior to that achieved in electrospun nanofibrous media in previous works. In addition, the QF was further improved to 0.0276 Pa−1, with a remarkably reduced resistance of 14.45 mmH2O achieved by employing the layered nanofiber media with a PVdF-HFP top layer. Our work demonstrates that optimization of the inherently polarized nanofiber synthesis is a fruitful pathway to enhancing the filtration performance of air filter media.
{"title":"Design of inherently polarized nanofiber-based membranes for superior filtration performance","authors":"Chaewon Kim , Seokwon Hong , Eunmo Ku , Hyun Ju Oh , Byungkyu Jeon , Hoseong Lee , Hyunchul Ahn , Jun Choi , Jihyun Bae , Yeong Og Choi , Byoung-Sun Lee","doi":"10.1016/j.jiec.2024.07.004","DOIUrl":"10.1016/j.jiec.2024.07.004","url":null,"abstract":"<div><div>As airborne particulate matter (PM) such as pathogens and ultrafine dust threaten the human health, air quality control technologies are becoming increasingly important. Herein, poly(vinylidene fluoride-co-hexafluoropropylene) (PVdF-HFP) nanofibers with various fiber diameters and pore size distributions were prepared using various compositions of volatile (acetone) and less volatile <em>N,N</em>-dimethylformamide (DMF) solvent mixtures to design the optimum filtration media. Morphologies and molecular configurations were examined thoroughly with respect to the filtration performance. Among the various solvent compositions, the specimen prepared with the lowest DMF content (denoted as ePVdF-HFP55) showed the best filtration performance, with a filtration efficiency of 99.95% and a pressure drop of 29.0 mmH<sub>2</sub>O. The quality factor (QF) of ePVdF-HFP55 (0.0266 Pa<sup>−1</sup>) is superior to that achieved in electrospun nanofibrous media in previous works. In addition, the QF was further improved to 0.0276 Pa<sup>−1</sup>, with a remarkably reduced resistance of 14.45 mmH<sub>2</sub>O achieved by employing the layered nanofiber media with a PVdF-HFP top layer. Our work demonstrates that optimization of the inherently polarized nanofiber synthesis is a fruitful pathway to enhancing the filtration performance of air filter media.</div></div>","PeriodicalId":363,"journal":{"name":"Journal of Industrial and Engineering Chemistry","volume":"141 ","pages":"Pages 421-430"},"PeriodicalIF":5.9,"publicationDate":"2025-01-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141693898","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 : 2025-01-25DOI: 10.1016/j.jiec.2024.06.019
Jinho Jung , Uiseok Hwang , Junyoung Kim , In-Kyung Park , Jonghwan Suhr , Jae-Do Nam
The generation of various noise has caused severe noise pollution issues across a wide frequency spectrum, urgently requiring the development of sound-absorbing materials. Herein, we introduce composite polyurethane (PU) foams incorporating extremely nanoporous activated carbon (AC) including both meso- and macro-sized pores as an eco-friendly sound-absorbing material with superior and broadband sound absorption capabilities. The composite foam absorbs 95.8 % of the incident acoustic waves in the 2,000–5,000 Hz frequency range, i.e., the most sensitive range for the human auditory system, far outperforming pristine PU foam, which absorbs only 70.6 %. We demonstrate that sound absorption properties can be fine-tuned by adjusting the pore type and content of the AC. Significantly, the optimized composite foam structure absorbs 100 % of the incident waves at a specific frequency of 2,550 Hz. Collectively, we propose a master curve for the sound absorption properties derived from various composite foams, demonstrating that the properties can be precisely predictable and subsequently used for designing the pore characteristics and content of AC. Incorporating AC can also improve the mechanical properties of foams through interfacial adhesion phenomena. Our methodology provides valuable insights into the fabrication of composite foams with tunable sound absorption properties as a promising solution to noise pollution.
{"title":"Activated carbon-reinforced polyurethane composite foams with hierarchical porosity for broadband sound absorption","authors":"Jinho Jung , Uiseok Hwang , Junyoung Kim , In-Kyung Park , Jonghwan Suhr , Jae-Do Nam","doi":"10.1016/j.jiec.2024.06.019","DOIUrl":"10.1016/j.jiec.2024.06.019","url":null,"abstract":"<div><div>The generation of various noise has caused severe noise pollution issues across a wide frequency spectrum, urgently requiring the development of sound-absorbing materials. Herein, we introduce composite polyurethane (PU) foams incorporating extremely nanoporous activated carbon (AC) including both meso- and macro-sized pores as an eco-friendly sound-absorbing material with superior and broadband sound absorption capabilities. The composite foam absorbs 95.8 % of the incident acoustic waves in the 2,000–5,000 Hz frequency range, i.e., the most sensitive range for the human auditory system, far outperforming pristine PU foam, which absorbs only 70.6 %. We demonstrate that sound absorption properties can be fine-tuned by adjusting the pore type and content of the AC. Significantly, the optimized composite foam structure absorbs 100 % of the incident waves at a specific frequency of 2,550 Hz. Collectively, we propose a master curve for the sound absorption properties derived from various composite foams, demonstrating that the properties can be precisely predictable and subsequently used for designing the pore characteristics and content of AC. Incorporating AC can also improve the mechanical properties of foams through interfacial adhesion phenomena. Our methodology provides valuable insights into the fabrication of composite foams with tunable sound absorption properties as a promising solution to noise pollution.</div></div>","PeriodicalId":363,"journal":{"name":"Journal of Industrial and Engineering Chemistry","volume":"141 ","pages":"Pages 85-93"},"PeriodicalIF":5.9,"publicationDate":"2025-01-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141409472","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 : 2025-01-25DOI: 10.1016/j.jiec.2024.06.026
Sangeedha Appusamy , Raymond J. Butcher , Thathan Premkumar , Ponnusamy Kanchana
This study focuses on newly synthesized compounds derived from hydrazine derivatives, specifically methyl carbazate (MCZ, C2H6N2O2) and 2-thiobarbituric acid (2-TBA, C4H4N2O2S). The reaction between MCZ and 2-TBA resulted in the formation of three types of salts with the following compositions: [(C2H7N2O2)+(C4H3N2O2S)−(1), (C2H7N2O2)+(C4H3N2O2S)−(C2H6N2O2) (2), and (C2H7N2O2)+(C6H16N)+(C4H3N2O2S)2−(3) [(C6H16N)+ represents the triethyl ammonium cation]. The prepared salts were comprehensively characterized, showing that compound (3) exhibited a monoclinic crystal structure and met Lipinski’s rules, indicating significant drug-like properties. Molecular docking analysis revealed that these compounds exhibited strong binding affinities toward bacterial proteins, particularly Staphylococcus aureus and Escherichia coli, indicating their potential as antibacterial agents. The synthesized compounds demonstrated remarkable free radical-scavenging abilities, as evidenced by DPPH assays. The results of pharmacological evaluations, including brine shrimp lethality assays, antibacterial tests, and anticancer studies on MCF-7 cell lines, revealed that the compounds exhibit highly significant activities, particularly cytotoxic effects, suggesting their potential as anticancer agents. The compound (3) emerged as the most effective anticancer agent against MCF-7 cells. These findings underscore the broad potential of these compounds, especially (3), as promising agents with significant antibacterial, antioxidant, and anticancer activities, suggesting that they may contribute to the field of medicinal chemistry with implications for therapeutic applications.
{"title":"Hydrazine-derived salts: Unveiling their diverse potential through synthesis, characterization, pharmacology, and theoretical analysis","authors":"Sangeedha Appusamy , Raymond J. Butcher , Thathan Premkumar , Ponnusamy Kanchana","doi":"10.1016/j.jiec.2024.06.026","DOIUrl":"10.1016/j.jiec.2024.06.026","url":null,"abstract":"<div><div>This study focuses on newly synthesized compounds derived from hydrazine derivatives, specifically methyl carbazate (MCZ, C<sub>2</sub>H<sub>6</sub>N<sub>2</sub>O<sub>2</sub>) and 2-thiobarbituric acid (2-TBA, C<sub>4</sub>H<sub>4</sub>N<sub>2</sub>O<sub>2</sub>S). The reaction between MCZ and 2-TBA resulted in the formation of three types of salts with the following compositions: [(C<sub>2</sub>H<sub>7</sub>N<sub>2</sub>O<sub>2</sub>)<sup>+</sup>(C<sub>4</sub>H<sub>3</sub>N<sub>2</sub>O<sub>2</sub>S)<sup>−</sup> <strong>(1),</strong> (C<sub>2</sub>H<sub>7</sub>N<sub>2</sub>O<sub>2</sub>)<sup>+</sup>(C<sub>4</sub>H<sub>3</sub>N<sub>2</sub>O<sub>2</sub>S)<sup>−</sup>(C<sub>2</sub>H<sub>6</sub>N<sub>2</sub>O<sub>2</sub>) <strong>(2</strong>), and (C<sub>2</sub>H<sub>7</sub>N<sub>2</sub>O<sub>2</sub>)<sup>+</sup>(C<sub>6</sub>H<sub>16</sub>N)<sup>+</sup>(C<sub>4</sub>H<sub>3</sub>N<sub>2</sub>O<sub>2</sub>S)<sub>2</sub><sup>−</sup> <strong>(3)</strong> [(C<sub>6</sub>H<sub>16</sub>N)<sup>+</sup> represents the triethyl ammonium cation]. The prepared salts were comprehensively characterized, showing that compound <strong>(3)</strong> exhibited a monoclinic crystal structure and met Lipinski’s rules, indicating significant drug-like properties. Molecular docking analysis revealed that these compounds exhibited strong binding affinities toward bacterial proteins, particularly <em>Staphylococcus aureus</em> and <em>Escherichia coli</em>, indicating their potential as antibacterial agents. The synthesized compounds demonstrated remarkable free radical-scavenging abilities, as evidenced by DPPH assays. The results of pharmacological evaluations, including brine shrimp lethality assays, antibacterial tests, and anticancer studies on MCF-7 cell lines, revealed that the compounds exhibit highly significant activities, particularly cytotoxic effects, suggesting their potential as anticancer agents. The compound <strong>(3)</strong> emerged as the most effective anticancer agent against MCF-7 cells. These findings underscore the broad potential of these compounds, especially <strong>(3)</strong>, as promising agents with significant antibacterial, antioxidant, and anticancer activities, suggesting that they may contribute to the field of medicinal chemistry with implications for therapeutic applications.</div></div>","PeriodicalId":363,"journal":{"name":"Journal of Industrial and Engineering Chemistry","volume":"141 ","pages":"Pages 154-173"},"PeriodicalIF":5.9,"publicationDate":"2025-01-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141518136","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 : 2025-01-25DOI: 10.1016/j.jiec.2024.06.021
Syed Muhammad Wajahat ul Hasnain , Ahmad Salam Farooqi , Bamidele Victor Ayodele , Herma Dina Setiabudi , Abid Salam Farooqi , Rayed S. Alshareef , Bawadi Abdullah
Palm Oil Fuel Ash (POFA) is massively produced by numerous palm oil mills worldwide, creating an environmental waste disposal problem. Notably, POFA serves as a cost-effective alternative silica source instead of the expensive tetraethyl orthosilicate (TEOS). This research focused on synthesizing SBA-15 from POFA waste and examining the effect of promoters on POFA-derived SBA-15-supported Ni-based catalysts. The 10 wt% Ni/SBA-15-POFA catalyst was sequentially impregnated with promoters having 1 wt% loading of Zr, Ce, La, and Cr. The catalysts were tested for CO2 methane reforming (CMR) at 800 °C for 8 hours while maintaining a stoichiometric feed ratio. Various characterization techniques, including XRD, FESEM, XPS, H2-TPR, CO2-TPD, and BET analysis were employed to assess the catalyst physicochemical properties. The addition of promoter changed the properties of catalyst. Except for Cr-promoted catalyst, the addition of promoters positively impacted catalytic performance, activity, and stability. XRD analysis showed that Cr addition had detrimental effects on the crystallite structure of the Ni/SBA-15-POFA catalyst. In contrast, Zr, Ce, and La additions significantly reduced the crystallite size and improved active metal dispersion. Overall, the Zr-promoted catalyst exhibited the best performance in terms of activity and stability, with a CH4 conversion of 90 % and CO2 conversion of 94.4 %. The spent catalyst characterization, including XRD, FESEM, O2-TPO, and RAMAN, showed that promoter addition significantly reduced carbon deposition. The stable and superior perfromance of Zr-promoted catalyst was attributed to the production of MWCNTs. Conversely, the rapid deactivation of the unpromoted catalyst may be due to the formation of amorphous carbon, which tends to quickly block active sites and reduce the catalytic activity.
{"title":"Synthesis, characterization, and catalytic performance of Ni supported on sustainable POFA-derived SBA-15 for hydrogen-rich syngas from CO2 reforming of methane","authors":"Syed Muhammad Wajahat ul Hasnain , Ahmad Salam Farooqi , Bamidele Victor Ayodele , Herma Dina Setiabudi , Abid Salam Farooqi , Rayed S. Alshareef , Bawadi Abdullah","doi":"10.1016/j.jiec.2024.06.021","DOIUrl":"10.1016/j.jiec.2024.06.021","url":null,"abstract":"<div><div><span><span>Palm Oil Fuel Ash (POFA) is massively produced by numerous palm oil mills worldwide, creating an environmental waste disposal problem. Notably, POFA serves as a cost-effective alternative silica source instead of the expensive </span>tetraethyl orthosilicate (TEOS). This research focused on synthesizing SBA-15 from POFA waste and examining the effect of promoters on POFA-derived SBA-15-supported Ni-based catalysts. The 10 wt% Ni/SBA-15-POFA catalyst was sequentially impregnated with promoters having 1 wt% loading of Zr, Ce, La, and Cr. The catalysts were tested for CO</span><sub>2</sub><span> methane reforming (CMR) at 800 °C for 8 hours while maintaining a stoichiometric feed ratio. Various characterization techniques, including XRD, FESEM, XPS, H</span><sub>2</sub>-TPR, CO<sub>2</sub><span>-TPD, and BET analysis were employed to assess the catalyst physicochemical properties. The addition of promoter changed the properties of catalyst. Except for Cr-promoted catalyst, the addition of promoters positively impacted catalytic performance, activity, and stability. XRD analysis showed that Cr addition had detrimental effects on the crystallite<span> structure of the Ni/SBA-15-POFA catalyst. In contrast, Zr, Ce, and La additions significantly reduced the crystallite size and improved active metal dispersion. Overall, the Zr-promoted catalyst exhibited the best performance in terms of activity and stability, with a CH</span></span><sub>4</sub> conversion of 90 % and CO<sub>2</sub> conversion of 94.4 %. The spent catalyst characterization, including XRD, FESEM, O<sub>2</sub><span>-TPO, and RAMAN, showed that promoter addition significantly reduced carbon deposition. The stable and superior perfromance of Zr-promoted catalyst was attributed to the production of MWCNTs<span>. Conversely, the rapid deactivation of the unpromoted catalyst may be due to the formation of amorphous carbon, which tends to quickly block active sites and reduce the catalytic activity.</span></span></div></div>","PeriodicalId":363,"journal":{"name":"Journal of Industrial and Engineering Chemistry","volume":"141 ","pages":"Pages 104-120"},"PeriodicalIF":5.9,"publicationDate":"2025-01-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141518137","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 : 2025-01-25DOI: 10.1016/j.jiec.2024.07.017
Azam Raza , Sk Najrul Islam , Kaifee Sayeed , Kavita Pandey , Fouzia Mashkoor , Changyoon Jeong , Mohd Shoeb , Absar Ahmad
A scalable method has been developed for synthesizing nitrogen-doped carbon-supported platinum nanoparticles. Fusarium oxysporum was utilized as reducing and stabilizing agent, and calcination was employed to produce the carbon support. The unique properties of Fusarium oxysporum facilitate the reduction of metal ions while preventing agglomeration and maintaining nanoparticle stability. An extensive investigation of the electrochemical supercapacitor and temperature-dependent dielectric properties of the nanoparticles demonstrates their suitability for supercapacitor applications. Electrochemical analysis showed N-doped C/Pt NPs with high specific capacitance, 482.77F/g at 2.0 A/g, retaining 94 % capacitance even under 20 A/g after 10,000 cycles. The symmetric supercapacitor device displayed 275F/g at 2 A/g, maintaining 61.10 Wh/kg energy density at 1000 W/kg power density, with ∼ 92 % capacitance retention after 10,000 cycles. Dielectric properties of N-doped C/Pt NPs were analyzed at both ambient (300 K) and elevated (450 K) temperatures, revealing temperature-dependent characteristics and alternating current conductivity. At 0.75 MHz, the dielectric permittivity (ɛ’) was measured at 31, with tangent loss at 2.01 and a.c. conductivity at 2.597 × 10-3 O−1 m−1. Increasing the frequency to 6.0 MHz resulted in a 2.38-fold rise in dielectric permittivity and a decrease in tangent loss to 0.77, demonstrating the temperature-sensitive nature of dielectric relaxation.
{"title":"Fusarium oxysporum mediated synthesis of nitrogen-doped carbon supported platinum nanoparticles for supercapacitor device and dielectric applications","authors":"Azam Raza , Sk Najrul Islam , Kaifee Sayeed , Kavita Pandey , Fouzia Mashkoor , Changyoon Jeong , Mohd Shoeb , Absar Ahmad","doi":"10.1016/j.jiec.2024.07.017","DOIUrl":"10.1016/j.jiec.2024.07.017","url":null,"abstract":"<div><div>A scalable method has been developed for synthesizing nitrogen-doped carbon-supported platinum nanoparticles. <em>Fusarium oxysporum</em> was utilized as reducing and stabilizing agent, and calcination was employed to produce the carbon support. The unique properties of <em>Fusarium oxysporum</em> facilitate the reduction of metal ions while preventing agglomeration and maintaining nanoparticle stability. An extensive investigation of the electrochemical supercapacitor and temperature-dependent dielectric properties of the nanoparticles demonstrates their suitability for supercapacitor applications. Electrochemical analysis showed N-doped C/Pt NPs with high specific capacitance, 482.77F/g at 2.0 A/g, retaining 94 % capacitance even under 20 A/g after 10,000 cycles. The symmetric supercapacitor device displayed 275F/g at 2 A/g, maintaining 61.10 Wh/kg energy density at 1000 W/kg power density, with ∼ 92 % capacitance retention after 10,000 cycles. Dielectric properties of N-doped C/Pt NPs were analyzed at both ambient (300 K) and elevated (450 K) temperatures, revealing temperature-dependent characteristics and alternating current conductivity. At 0.75 MHz, the dielectric permittivity (ɛ’) was measured at 31, with tangent loss at 2.01 and a.c. conductivity at 2.597 × 10<sup>-3 O−1</sup> m<sup>−1</sup>. Increasing the frequency to 6.0 MHz resulted in a 2.38-fold rise in dielectric permittivity and a decrease in tangent loss to 0.77, demonstrating the temperature-sensitive nature of dielectric relaxation.</div></div>","PeriodicalId":363,"journal":{"name":"Journal of Industrial and Engineering Chemistry","volume":"141 ","pages":"Pages 568-581"},"PeriodicalIF":5.9,"publicationDate":"2025-01-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141691113","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 : 2025-01-25DOI: 10.1016/j.jiec.2024.07.010
Nguyen Huu Hieu , Phan Minh Tu , Nguyen Hoang Kim Duyen , Cao Vu Lam , Dang Ngoc Chau Vy , Ta Dang Khoa , Nguyen Truong Son , Vo Nguyen Dai Viet , Pham Trong Liem Chau
In order to solve the problem of heavy metal pollution, in this study, Zn-doped aerogel (Zn-A) was used as a material to remove Ni2+ from wastewater. Zn-A was synthesized from sodium alginate and nipa palm shell-derived cellulose via the sol–gel method combined with freeze-drying. Zn-A has the ability to adsorb Ni2+ up to 194.2 mg/g (Zn-A-Ni). After adsorbing Ni2+, Zn-A-Ni was pyrolyzed to form Zn, Ni-co-doped carbon aerogel (Zn-CA-Ni), which has high potential for manufacturing electrodes in supercapacitors (specific capacitance reaches 124.0F/g) and crystal violet treatment (adsorption capacity reaches 38.7 mg/g). Furthermore, Zn-A and Zn-CA-Ni were characterized through modern methods: Scanning electron microscope, energy dispersive X-ray, Fourier-transform infrared spectroscopy, X-ray diffraction analysis, and Nitrogen adsorption–desorption isotherm. The ability to adsorb Ni2+ of Zn-A and adsorb crystal violet of Zn-CA-Ni was determined through ultraviolet–visible spectroscopy measurement. In addition, the electrochemical properties of Zn-CA-Ni were also analyzed through cyclic voltammetry, galvanostatic charge–discharge, and electrochemical impedance spectroscopy.
{"title":"Zn-doped aerogel for Ni2+ adsorption (Zn-A-Ni) and reuse of Zn-A-Ni to create Zn, Ni-co-doped carbon aerogel for applications in adsorption and energy storage","authors":"Nguyen Huu Hieu , Phan Minh Tu , Nguyen Hoang Kim Duyen , Cao Vu Lam , Dang Ngoc Chau Vy , Ta Dang Khoa , Nguyen Truong Son , Vo Nguyen Dai Viet , Pham Trong Liem Chau","doi":"10.1016/j.jiec.2024.07.010","DOIUrl":"10.1016/j.jiec.2024.07.010","url":null,"abstract":"<div><div><span>In order to solve the problem of heavy metal pollution, in this study, Zn-doped aerogel (Zn-A) was used as a material to remove Ni</span><sup>2+</sup><span> from wastewater. Zn-A was synthesized from sodium alginate and nipa palm shell-derived cellulose via the sol–gel method combined with freeze-drying. Zn-A has the ability to adsorb Ni</span><sup>2+</sup> up to 194.2 mg/g (Zn-A-Ni). After adsorbing Ni<sup>2+</sup><span>, Zn-A-Ni was pyrolyzed to form Zn, Ni-co-doped carbon aerogel<span> (Zn-CA-Ni), which has high potential for manufacturing electrodes in supercapacitors (specific capacitance reaches 124.0F/g) and crystal violet treatment (adsorption capacity reaches 38.7 mg/g). Furthermore, Zn-A and Zn-CA-Ni were characterized through modern methods: Scanning electron microscope, energy dispersive X-ray, Fourier-transform infrared spectroscopy, X-ray diffraction analysis, and Nitrogen adsorption–desorption isotherm. The ability to adsorb Ni</span></span><sup>2+</sup><span><span> of Zn-A and adsorb crystal violet of Zn-CA-Ni was determined through ultraviolet–visible spectroscopy measurement. In addition, the electrochemical properties of Zn-CA-Ni were also analyzed through </span>cyclic voltammetry<span>, galvanostatic charge–discharge, and electrochemical impedance spectroscopy.</span></span></div></div>","PeriodicalId":363,"journal":{"name":"Journal of Industrial and Engineering Chemistry","volume":"141 ","pages":"Pages 489-500"},"PeriodicalIF":5.9,"publicationDate":"2025-01-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141692305","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 : 2025-01-25DOI: 10.1016/j.jiec.2024.06.044
Cheng Gong , Xinxin Lv , Sheng Liu , Xing Chen , Rohan Weerasooriya , Zhaogang Ding
Designing catalysts that are both efficient and resistant to interference poses a significant challenge in the field of catalytic ozone oxidation. In this study, four composite nanomaterials with different crystalline phase structures of MnO2 and its loading onto activated carbon were synthesized by hydrothermal synthesis-calcination method and successfully used to catalyze the degradation of BAA by ozonation. The synthesized α-MnO2/AC showed excellent performance and stability, and the degradation rate of 100 mg/L BAA could reach 96.27 % within 40 min under optimal conditions. Compared with MnO2 alone, α-MnO2/AC possessed lower polarization resistance, faster charge transfer rate, and higher Mn3+ and oxygen vacancy contents. Through the mechanistic study of Heterogeneous catalytic ozonation (HCO), it was confirmed that Mn(III) and oxygen vacancies together acted as active sites to enable O3 adsorption and activation to generate ROS, and OH and 1O2 reacted with BAA as the main ROS in this system. In addition, a potential pathway for the degradation of BAA by HCO was proposed and evaluated for its toxicity. This study provides a new strategy and understanding for designing manganese dioxide composite catalysts with different crystalline phases and the mechanistic exploration of the HCO pathway.
{"title":"Novel α-MnO2/AC catalysts for heterogeneous catalytic ozonation process to remove BAA in dye wastewater","authors":"Cheng Gong , Xinxin Lv , Sheng Liu , Xing Chen , Rohan Weerasooriya , Zhaogang Ding","doi":"10.1016/j.jiec.2024.06.044","DOIUrl":"10.1016/j.jiec.2024.06.044","url":null,"abstract":"<div><div>Designing catalysts that are both efficient and resistant to interference poses a significant challenge in the field of catalytic ozone oxidation. In this study, four composite nanomaterials with different crystalline phase structures of MnO<sub>2</sub> and its loading onto activated carbon were synthesized by hydrothermal synthesis-calcination method and successfully used to catalyze the degradation of BAA by ozonation. The synthesized α-MnO<sub>2</sub>/AC showed excellent performance and stability, and the degradation rate of 100 mg/L BAA could reach 96.27 % within 40 min under optimal conditions. Compared with MnO<sub>2</sub> alone, α-MnO<sub>2</sub>/AC possessed lower polarization resistance, faster charge transfer rate, and higher Mn<sup>3+</sup><span> and oxygen vacancy contents. Through the mechanistic study of Heterogeneous catalytic ozonation (HCO), it was confirmed that Mn(III) and oxygen vacancies together acted as active sites to enable O</span><sub>3</sub> adsorption and activation to generate ROS, and <img>OH and <sup>1</sup>O<sub>2</sub><span> reacted with BAA as the main ROS in this system. In addition, a potential pathway for the degradation of BAA by HCO<span> was proposed and evaluated for its toxicity. This study provides a new strategy and understanding for designing manganese dioxide composite catalysts with different crystalline phases and the mechanistic exploration of the HCO pathway.</span></span></div></div>","PeriodicalId":363,"journal":{"name":"Journal of Industrial and Engineering Chemistry","volume":"141 ","pages":"Pages 340-350"},"PeriodicalIF":5.9,"publicationDate":"2025-01-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141708629","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}
This work pacts with a simple and environmentally friendly hydrothermal method to synthesize clove buds-derived carbon dots (CCDs) at different temperatures. Five CCDs samples were synthesized at different reaction temperatures ranging from 120 °C to 200 °C, respectively. Using UV–Visible (UV–Vis) and fluorescence spectroscopy (FL), the optical characteristics of CCDs made at various temperatures were examined and compared. The results show that the optical properties of prepared carbon dots (CDs) are significantly influenced by the temperature of carbonization. The cytocompatibility and hemolysis studies of optimized CCDs were performed to understand their interaction in the biological environment. The free radical scavenging capability of CDs was also explored. Further, in vitro cellular imaging of optimized CCDs200 was performed which shows strong and multicolour emission when excited with different laser sources. Interestingly, CDs are capable of brightening up RNA-rich nucleoli. Testing using ribonuclease digestion validates the localization of the CCDs in the nucleolus. Further, intracellular stability and good counterstaining compatibility feature them as a promising fluorescence probe for nucleolus imaging. Therefore, we have explored medicinal plant fruits as a carbon precursor for the synthesis of CDs without using any modifier which can be a potential candidate for multicolour nucleolus imaging and free radical scavenging applications.
{"title":"Effect of reaction temperatures on optical properties of clove buds derived carbon dots for targeting nucleolus","authors":"Anurag Kumar Pandey , Tapan Kumar Nath , Santanu Dhara","doi":"10.1016/j.jiec.2024.07.006","DOIUrl":"10.1016/j.jiec.2024.07.006","url":null,"abstract":"<div><div><span><span>This work pacts with a simple and environmentally friendly hydrothermal method<span> to synthesize clove buds-derived carbon dots (CCDs) at different temperatures. Five CCDs samples were synthesized at different reaction temperatures ranging from 120 °C to 200 °C, respectively. Using UV–Visible (UV–Vis) and </span></span>fluorescence spectroscopy<span> (FL), the optical characteristics<span><span><span> of CCDs made at various temperatures were examined and compared. The results show that the optical properties<span> of prepared carbon dots (CDs) are significantly influenced by the temperature of </span></span>carbonization<span>. The cytocompatibility and hemolysis studies of optimized CCDs were performed to understand their interaction in the biological environment. The free radical scavenging capability of CDs was also explored. Further, in vitro </span></span>cellular imaging of optimized CCDs</span></span></span><sub>200</sub><span> was performed which shows strong and multicolour emission when excited with different laser sources. Interestingly, CDs are capable of brightening up RNA-rich nucleoli. Testing using ribonuclease digestion validates the localization of the CCDs in the nucleolus. Further, intracellular stability and good counterstaining compatibility feature them as a promising fluorescence probe for nucleolus imaging. Therefore, we have explored medicinal plant fruits as a carbon precursor for the synthesis of CDs without using any modifier which can be a potential candidate for multicolour nucleolus imaging and free radical scavenging applications.</span></div></div>","PeriodicalId":363,"journal":{"name":"Journal of Industrial and Engineering Chemistry","volume":"141 ","pages":"Pages 441-455"},"PeriodicalIF":5.9,"publicationDate":"2025-01-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141711616","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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