Materials Today Sustainability最新文献_第5页

Phytofabrication of silver nanoparticles using Ehretia rigida leaf aqueous extract, their characterization, antioxidant and antimicrobial activities

IF 7.1 3区材料科学 Q1 GREEN & SUSTAINABLE SCIENCE & TECHNOLOGY

Materials Today Sustainability

Pub Date : 2024-12-09 DOI: 10.1016/j.mtsust.2024.101059

Samson O. Oselusi , Nicole R.S. Sibuyi , Mervin Meyer , Samantha Meyer , Abram M. Madiehe

The green synthesis of nanoparticles (NPs) offers a sustainable, rapid, and cost-effective alternative to traditional chemical and physical methods, with diverse applications across various fields. This study reports the synthesis of silver nanoparticles (AgNPs) using Ehretia rigida (Er) leaf aqueous extract and evaluates their biological activities. The formation of the NPs was confirmed by the change in colour from clear to dark brown. The synthesis parameters, such as pH, temperature, Er extract and silver nitrate (AgNO₃) concentrations, reaction ratio, and incubation time, were optimized for high yields, controlled size, and stability of the NPs. The optimized Er-AgNPs were characterized using ultraviolet–visible (UV–vis) spectroscopy, dynamic light scattering (DLS), Fourier transform infrared (FTIR) spectroscopy, and high-resolution transmission electron microscopy (HR–TEM). The Er-AgNPs sample presented a characteristic absorbance peak at 408 nm, a hydrodynamic size of 74.02 ± 0.19 nm, a polydispersity index (PDI) of 0.39 ± 0.05, and a zeta potential of −25.4 ± 6.26 mV. FTIR analysis revealed the nature of the biomolecules responsible for the reduction and stabilization of the NPs. HR–TEM revealed that the Er-AgNPs were spherical, with core sizes ranging from 6 to 18 nm. The Er leaf aqueous extract and Er-AgNPs possessed antioxidant activities, with the Er leaf extract having higher activity than Er-AgNPs. The Er leaf extract did not exhibit any antimicrobial activity, whereas the Er-AgNPs demonstrated broad-spectrum antimicrobial activities against all the tested pathogens. This study provides a sustainable, easy and cost-effective method to produce AgNPs for biomedical applications.

{"title":"Phytofabrication of silver nanoparticles using Ehretia rigida leaf aqueous extract, their characterization, antioxidant and antimicrobial activities","authors":"Samson O. Oselusi , Nicole R.S. Sibuyi , Mervin Meyer , Samantha Meyer , Abram M. Madiehe","doi":"10.1016/j.mtsust.2024.101059","DOIUrl":"10.1016/j.mtsust.2024.101059","url":null,"abstract":"<div><div>The green synthesis of nanoparticles (NPs) offers a sustainable, rapid, and cost-effective alternative to traditional chemical and physical methods, with diverse applications across various fields. This study reports the synthesis of silver nanoparticles (AgNPs) using <em>Ehretia rigida</em> (Er) leaf aqueous extract and evaluates their biological activities. The formation of the NPs was confirmed by the change in colour from clear to dark brown. The synthesis parameters, such as pH, temperature, Er extract and silver nitrate (AgNO<sub>3</sub>) concentrations, reaction ratio, and incubation time, were optimized for high yields, controlled size, and stability of the NPs. The optimized Er-AgNPs were characterized using ultraviolet–visible (UV–vis) spectroscopy, dynamic light scattering (DLS), Fourier transform infrared (FTIR) spectroscopy, and high-resolution transmission electron microscopy (HR–TEM). The Er-AgNPs sample presented a characteristic absorbance peak at 408 nm, a hydrodynamic size of 74.02 ± 0.19 nm, a polydispersity index (PDI) of 0.39 ± 0.05, and a zeta potential of −25.4 ± 6.26 mV. FTIR analysis revealed the nature of the biomolecules responsible for the reduction and stabilization of the NPs. HR–TEM revealed that the Er-AgNPs were spherical, with core sizes ranging from 6 to 18 nm. The Er leaf aqueous extract and Er-AgNPs possessed antioxidant activities, with the Er leaf extract having higher activity than Er-AgNPs. The Er leaf extract did not exhibit any antimicrobial activity, whereas the Er-AgNPs demonstrated broad-spectrum antimicrobial activities against all the tested pathogens. This study provides a sustainable, easy and cost-effective method to produce AgNPs for biomedical applications.</div></div>","PeriodicalId":18322,"journal":{"name":"Materials Today Sustainability","volume":"29 ","pages":"Article 101059"},"PeriodicalIF":7.1,"publicationDate":"2024-12-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143135586","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Preserving food quality: Electrochemical detection of synthetic food antioxidant, propyl gallate in processed foods using ternary component layered double hydroxide/graphene aerogel synergy

IF 7.1 3区材料科学 Q1 GREEN & SUSTAINABLE SCIENCE & TECHNOLOGY

Materials Today Sustainability

Pub Date : 2024-12-09 DOI: 10.1016/j.mtsust.2024.101061

Megha Maria Stanley , Balasubramanian Sriram , Sea-Fue Wang , Abhikha Sherlin V , Sakthivel Kogularasu , Mary George

Fueled by the mounting demand from convenience-oriented consumers, the contemporary food industry increasingly relies on specialty chemicals to extend the shelf-life of processed food. Antioxidants such as propyl gallate (PG) are added to food products to avert lipid oxidation. Existing methods for monitoring PG often lack the required sensitivity and accuracy for real-time applications. Our work demonstrates enhanced sensitivity and selectivity through the synergistic combination of transition metal-based ternary layered double hydroxide (LDH) and graphene aerogel (GA) coated on a disposable screen-printed carbon electrode (SPCE). Introducing multi-metal-based LDH improves the electrochemical stability compared to virgin LDH structures. Using NiFeCu-LDH anchored to porous GA leading to high specific surface area and enhanced electron transfer, we explore the electrochemical conversion of PG at the modified SPCE using various electrochemical techniques. Differential pulse voltammetry showed a wide linear range from 0.02 to 279.1 μM and a limit of detection of 0.004 μM. Importantly, our work chronicles new insights into using Deep Eutectic Solvent (DES) systems for the green synthesis of LDHs. The developed electrochemical sensor was successfully used to assay PG in real food matrices, achieving recoveries of ±97.60–99.2%.

{"title":"Preserving food quality: Electrochemical detection of synthetic food antioxidant, propyl gallate in processed foods using ternary component layered double hydroxide/graphene aerogel synergy","authors":"Megha Maria Stanley , Balasubramanian Sriram , Sea-Fue Wang , Abhikha Sherlin V , Sakthivel Kogularasu , Mary George","doi":"10.1016/j.mtsust.2024.101061","DOIUrl":"10.1016/j.mtsust.2024.101061","url":null,"abstract":"<div><div>Fueled by the mounting demand from convenience-oriented consumers, the contemporary food industry increasingly relies on specialty chemicals to extend the shelf-life of processed food. Antioxidants such as propyl gallate (PG) are added to food products to avert lipid oxidation. Existing methods for monitoring PG often lack the required sensitivity and accuracy for real-time applications. Our work demonstrates enhanced sensitivity and selectivity through the synergistic combination of transition metal-based ternary layered double hydroxide (LDH) and graphene aerogel (GA) coated on a disposable screen-printed carbon electrode (SPCE). Introducing multi-metal-based LDH improves the electrochemical stability compared to virgin LDH structures. Using NiFeCu-LDH anchored to porous GA leading to high specific surface area and enhanced electron transfer, we explore the electrochemical conversion of PG at the modified SPCE using various electrochemical techniques. Differential pulse voltammetry showed a wide linear range from 0.02 to 279.1 μM and a limit of detection of 0.004 μM. Importantly, our work chronicles new insights into using Deep Eutectic Solvent (DES) systems for the green synthesis of LDHs. The developed electrochemical sensor was successfully used to assay PG in real food matrices, achieving recoveries of ±97.60–99.2%.</div></div>","PeriodicalId":18322,"journal":{"name":"Materials Today Sustainability","volume":"29 ","pages":"Article 101061"},"PeriodicalIF":7.1,"publicationDate":"2024-12-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143096449","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Strategies on utilizing biomass derived 5-hydroxymethylfufural by catalytic reactions: Pathways and mechanisms

IF 7.1 3区材料科学 Q1 GREEN & SUSTAINABLE SCIENCE & TECHNOLOGY

Materials Today Sustainability

Pub Date : 2024-12-05 DOI: 10.1016/j.mtsust.2024.101058

Serin Jung , Kyung Suh Kim , Geon Hyeong Park , Hyun Gil Cha , Hanseob Jeong , Myung Jong Kang

Biomass refinery, produces chemicals that can replace pristine petroleum-derived chemicals through chemical/biological engineering processes, and is regarded as a renewable energy source for achieving environmental-friendly production and sustainability. Among various kinds of biomass derived chemicals, 5-hydroxymethylfufural (5-HMF), produced by the dehydration of fructose via glucose isomerization, has remarkable potential as a platform chemical for utilization in value-added products such as pharmaceutical, bio plastics, bio fuels and polyesters. Representative chemicals produced from 5-HMF are 2,5-diformylfuran and 2,5-furandicarboxylic acid, which are generated via oxidation reactions, and 2,5-bis(hydroxymethyl)furan which are generated via a reduction reaction. Theses oxidation/reduction products can potentially be used as value-added chemicals for polymer vitrimers, and in bioplastic monomers for replacing pristine polyethylene terephthalate, polyurethane and polyesters. Herein, the recent achievements in the catalytic conversion of 5-HMF to oxidation/reduction products using heterogeneous catalysts and electrocatalysts are presented, including the detailed catalytic mechanisms of 5-HMF valorization. The current challenges and future perspectives are discussed to prompt further studies and catalyst design for the oxidation/reduction of 5-HMF to useful chemicals.

{"title":"Strategies on utilizing biomass derived 5-hydroxymethylfufural by catalytic reactions: Pathways and mechanisms","authors":"Serin Jung , Kyung Suh Kim , Geon Hyeong Park , Hyun Gil Cha , Hanseob Jeong , Myung Jong Kang","doi":"10.1016/j.mtsust.2024.101058","DOIUrl":"10.1016/j.mtsust.2024.101058","url":null,"abstract":"<div><div>Biomass refinery, produces chemicals that can replace pristine petroleum-derived chemicals through chemical/biological engineering processes, and is regarded as a renewable energy source for achieving environmental-friendly production and sustainability. Among various kinds of biomass derived chemicals, 5-hydroxymethylfufural (5-HMF), produced by the dehydration of fructose via glucose isomerization, has remarkable potential as a platform chemical for utilization in value-added products such as pharmaceutical, bio plastics, bio fuels and polyesters. Representative chemicals produced from 5-HMF are 2,5-diformylfuran and 2,5-furandicarboxylic acid, which are generated via oxidation reactions, and 2,5-bis(hydroxymethyl)furan which are generated via a reduction reaction. Theses oxidation/reduction products can potentially be used as value-added chemicals for polymer vitrimers, and in bioplastic monomers for replacing pristine polyethylene terephthalate, polyurethane and polyesters. Herein, the recent achievements in the catalytic conversion of 5-HMF to oxidation/reduction products using heterogeneous catalysts and electrocatalysts are presented, including the detailed catalytic mechanisms of 5-HMF valorization. The current challenges and future perspectives are discussed to prompt further studies and catalyst design for the oxidation/reduction of 5-HMF to useful chemicals.</div></div>","PeriodicalId":18322,"journal":{"name":"Materials Today Sustainability","volume":"29 ","pages":"Article 101058"},"PeriodicalIF":7.1,"publicationDate":"2024-12-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143135582","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Investigation of electrochemical features of a novel Ni2P2O7-Polyaniline nanohybrid as electroactive material in high-reliable supercapacitors

IF 7.1 3区材料科学 Q1 GREEN & SUSTAINABLE SCIENCE & TECHNOLOGY

Materials Today Sustainability

Pub Date : 2024-12-03 DOI: 10.1016/j.mtsust.2024.101054

Harish Chevulamaddi, Venkateswara Rao Kalagadda

A novel nanohybrid of Ni₂P₂O₇-Polyanaline (NPP) has been engineered to study energy storage performance. The nanohybrid was fabricated by surface coating of Ni₂P₂O₇ layered nanostructure (NPL) with the conductive polymer polyaniline (PANI). Initially, pristine Ni₂P₂O₇ layered nanostructure (NPL) was synthesized through single-step hydrothermal approach. Subsequently, hybrid composite (NPP) was constructed using in-situ oxidative polymerization of aniline monomer. The structural, morphological, and compositional properties of synthesized samples were characterized via XRD, FTIR, SEM, TEM, XPS and BET analysis. The electrochemical performances of the materials were evaluated for supercapacitor performance using Cyclic Voltammetry (CV), Galvanostatic Charge-Discharge (GCD) test, Electrochemical Impedance analysis (EIS), and cyclic stability assessments. The results demonstrated that the hybrid composite exhibited significantly enhanced capacitance of 1333.9 F/g at 1 mV/s, 1150 F/g at 1 A/g from CV and GCD measurements respectively, including impressive stability performance, retaining 95% of its capacitance over 7000 CV cycles. Furthermore, symmetrical supercapacitor device constructed using NPP electrodes and operated at potential window of 1.6 V. The assembled symmetric device demonstrated superior energy density, power density, and cycling performance. The improvements in the performance of the three and two-electrode systems are attributed to PANI coating on the NPL surface, indicating that the hybrid composite is promising candidate for highly reliable supercapacitors.

{"title":"Investigation of electrochemical features of a novel Ni2P2O7-Polyaniline nanohybrid as electroactive material in high-reliable supercapacitors","authors":"Harish Chevulamaddi, Venkateswara Rao Kalagadda","doi":"10.1016/j.mtsust.2024.101054","DOIUrl":"10.1016/j.mtsust.2024.101054","url":null,"abstract":"<div><div>A novel nanohybrid of Ni<sub>2</sub>P<sub>2</sub>O<sub>7</sub>-Polyanaline (NPP) has been engineered to study energy storage performance. The nanohybrid was fabricated by surface coating of Ni<sub>2</sub>P<sub>2</sub>O<sub>7</sub> layered nanostructure (NPL) with the conductive polymer polyaniline (PANI). Initially, pristine Ni<sub>2</sub>P<sub>2</sub>O<sub>7</sub> layered nanostructure (NPL) was synthesized through single-step hydrothermal approach. Subsequently, hybrid composite (NPP) was constructed using in-situ oxidative polymerization of aniline monomer. The structural, morphological, and compositional properties of synthesized samples were characterized via XRD, FTIR, SEM, TEM, XPS and BET analysis. The electrochemical performances of the materials were evaluated for supercapacitor performance using Cyclic Voltammetry (CV), Galvanostatic Charge-Discharge (GCD) test, Electrochemical Impedance analysis (EIS), and cyclic stability assessments. The results demonstrated that the hybrid composite exhibited significantly enhanced capacitance of 1333.9 F/g at 1 mV/s, 1150 F/g at 1 A/g from CV and GCD measurements respectively, including impressive stability performance, retaining 95% of its capacitance over 7000 CV cycles. Furthermore, symmetrical supercapacitor device constructed using NPP electrodes and operated at potential window of 1.6 V. The assembled symmetric device demonstrated superior energy density, power density, and cycling performance. The improvements in the performance of the three and two-electrode systems are attributed to PANI coating on the NPL surface, indicating that the hybrid composite is promising candidate for highly reliable supercapacitors.</div></div>","PeriodicalId":18322,"journal":{"name":"Materials Today Sustainability","volume":"29 ","pages":"Article 101054"},"PeriodicalIF":7.1,"publicationDate":"2024-12-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143096279","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Theoretical prediction of materials with diffuse electrons with possible applications in redox catalysis and quantum computing

IF 7.1 3区材料科学 Q1 GREEN & SUSTAINABLE SCIENCE & TECHNOLOGY

Materials Today Sustainability

Pub Date : 2024-12-03 DOI: 10.1016/j.mtsust.2024.101052

Benjamin A. Jackson , Evangelos Miliordos , Mal-Soon Lee

The spin of diffuse electrons has been proposed in the literature as qubit for quantum hardware applications. Here we provide the first investigation of the thermal stability for a newly reported family of materials with diffuse electrons. This material has a diamond-like grid of Li ⁺ centers bridged by diamine chains NH₂(CH₂)_nH₂N of varying carbon length. The tetracoordinated lithium-amine center is surrounded by one diffuse electron solvated by the N–H bonds. Previous work has demonstrated the tunability of the electronic structure of this material, with short chain lengths producing a metallic material and longer a semiconductor. Density functional theory-based ab initio molecular dynamics simulations are employed to characterize the thermal stability and melting point of the crystalline material. Calculations show that the thermal stability ranges from 100 to 220 K, primarily depending on the carbon chain length, with longer chains increasing the stability. Melting of the material is characterized by dissociation of the diamine coordination and formation of disordered clumps of undercoordinated Li-diamine centers. These melting points are well above temperatures used in typical quantum computing applications. The computational study provides insight into avenues for the future development of similar materials and the improvement of their stability.

{"title":"Theoretical prediction of materials with diffuse electrons with possible applications in redox catalysis and quantum computing","authors":"Benjamin A. Jackson , Evangelos Miliordos , Mal-Soon Lee","doi":"10.1016/j.mtsust.2024.101052","DOIUrl":"10.1016/j.mtsust.2024.101052","url":null,"abstract":"<div><div>The spin of diffuse electrons has been proposed in the literature as qubit for quantum hardware applications. Here we provide the first investigation of the thermal stability for a newly reported family of materials with diffuse electrons. This material has a diamond-like grid of Li <sup>+</sup> centers bridged by diamine chains NH<sub>2</sub>(CH<sub>2</sub>)<sub><em>n</em></sub>H<sub>2</sub>N of varying carbon length. The tetracoordinated lithium-amine center is surrounded by one diffuse electron solvated by the N–H bonds. Previous work has demonstrated the tunability of the electronic structure of this material, with short chain lengths producing a metallic material and longer a semiconductor. Density functional theory-based <em>ab initio</em> molecular dynamics simulations are employed to characterize the thermal stability and melting point of the crystalline material. Calculations show that the thermal stability ranges from 100 to 220 K, primarily depending on the carbon chain length, with longer chains increasing the stability. Melting of the material is characterized by dissociation of the diamine coordination and formation of disordered clumps of undercoordinated Li-diamine centers. These melting points are well above temperatures used in typical quantum computing applications. The computational study provides insight into avenues for the future development of similar materials and the improvement of their stability.</div></div>","PeriodicalId":18322,"journal":{"name":"Materials Today Sustainability","volume":"29 ","pages":"Article 101052"},"PeriodicalIF":7.1,"publicationDate":"2024-12-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143096278","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Recent advances in MOF-based composites for the detection and adsorptive removal of Pb(II) ions in aqueous phase

IF 7.1 3区材料科学 Q1 GREEN & SUSTAINABLE SCIENCE & TECHNOLOGY

Materials Today Sustainability

Pub Date : 2024-12-03 DOI: 10.1016/j.mtsust.2024.101057

Kushal Arya , Ajay Kumar , Ramesh Kataria

Metal-organic frameworks (MOFs) and their composites offer promising solutions for the detection and adsorption of lead (Pb²⁺) ions, posing health risks associated with lead contamination in water. With tunable porosity, high surface area, and inherent fluorescence, MOFs can selectively detect and remove Pb²⁺ ions across various environmental conditions. This article describes the key strategies for designing MOFs with optimal adsorption properties and integrating materials like reduced graphene oxide (rGO), chitosan, cellulose, and magnetic nanoparticles to enhance capacity, selectivity, and stability. Mechanistic insights into Pb²⁺ adsorption reveal that both chemisorption and physisorption processes contribute to effective lead removal, particularly through tailored MOF structures with specific ligands and metal nodes. Recent advancements include the development of portable, point-of-care devices based on MOFs, enabling rapid, on-site detection and analysis of Pb²⁺ contamination. MOF-based systems thus hold significant potential as practical tools for addressing lead pollution in water, combining sensitivity, selectivity, and scalability in diverse environmental settings.

{"title":"Recent advances in MOF-based composites for the detection and adsorptive removal of Pb(II) ions in aqueous phase","authors":"Kushal Arya , Ajay Kumar , Ramesh Kataria","doi":"10.1016/j.mtsust.2024.101057","DOIUrl":"10.1016/j.mtsust.2024.101057","url":null,"abstract":"<div><div>Metal-organic frameworks (MOFs) and their composites offer promising solutions for the detection and adsorption of lead (Pb<sup>2+</sup>) ions, posing health risks associated with lead contamination in water. With tunable porosity, high surface area, and inherent fluorescence, MOFs can selectively detect and remove Pb<sup>2+</sup> ions across various environmental conditions. This article describes the key strategies for designing MOFs with optimal adsorption properties and integrating materials like reduced graphene oxide (rGO), chitosan, cellulose, and magnetic nanoparticles to enhance capacity, selectivity, and stability. Mechanistic insights into Pb<sup>2+</sup> adsorption reveal that both chemisorption and physisorption processes contribute to effective lead removal, particularly through tailored MOF structures with specific ligands and metal nodes. Recent advancements include the development of portable, point-of-care devices based on MOFs, enabling rapid, on-site detection and analysis of Pb<sup>2+</sup> contamination. MOF-based systems thus hold significant potential as practical tools for addressing lead pollution in water, combining sensitivity, selectivity, and scalability in diverse environmental settings.</div></div>","PeriodicalId":18322,"journal":{"name":"Materials Today Sustainability","volume":"29 ","pages":"Article 101057"},"PeriodicalIF":7.1,"publicationDate":"2024-12-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143096276","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Advances in hollow fiber membrane contactors for CO2 stripping

IF 7.1 3区材料科学 Q1 GREEN & SUSTAINABLE SCIENCE & TECHNOLOGY

Materials Today Sustainability

Pub Date : 2024-12-03 DOI: 10.1016/j.mtsust.2024.101056

Muhammad Waseem, Nayef Ghasem, Mohamed Al-Marzouqi

Alkanolamines are most commonly used solvents for CO₂ capture because of their high absorption capacities and reversibility. The energy-intensive nature of amine-based CO₂ capture, as well as high capital cost, inhibits its widespread application. Amine solvent regeneration accounts for more than 60% of the overall CO₂ capturing cost. Global interest in reducing CO₂ emissions efficiently shows the urgency of advancements in carbon capture. Hollow fiber membrane contactors (HFMCs) give a promising option for solvent regeneration, offering benefits like functional adaptability, versatility, and decreased energy utilization. The latest developments in the use of HFMCs for CO₂ stripping in amine-based carbon capture processes are examined in this paper. The review includes an assessment of membrane materials, fabrication approaches, module developments, and innovation challenges. The challenges of scaling up membrane contactors for industrial applications are considered, emphasizing interdisciplinary collaboration, technological advancement, and environmentally friendly methods. Membrane contractors have the potential to significantly contribute to global efforts for a sustainable and environmentally conscious future as the world moves toward a low-carbon future. Further research on optimizing HFMC materials and understanding their industrial effect is essential to fully realize their potential in large-scale CO₂ separation processes.

{"title":"Advances in hollow fiber membrane contactors for CO2 stripping","authors":"Muhammad Waseem, Nayef Ghasem, Mohamed Al-Marzouqi","doi":"10.1016/j.mtsust.2024.101056","DOIUrl":"10.1016/j.mtsust.2024.101056","url":null,"abstract":"<div><div>Alkanolamines are most commonly used solvents for CO<sub>2</sub> capture because of their high absorption capacities and reversibility. The energy-intensive nature of amine-based CO<sub>2</sub> capture, as well as high capital cost, inhibits its widespread application. Amine solvent regeneration accounts for more than 60% of the overall CO<sub>2</sub> capturing cost. Global interest in reducing CO<sub>2</sub> emissions efficiently shows the urgency of advancements in carbon capture. Hollow fiber membrane contactors (HFMCs) give a promising option for solvent regeneration, offering benefits like functional adaptability, versatility, and decreased energy utilization. The latest developments in the use of HFMCs for CO<sub>2</sub> stripping in amine-based carbon capture processes are examined in this paper. The review includes an assessment of membrane materials, fabrication approaches, module developments, and innovation challenges. The challenges of scaling up membrane contactors for industrial applications are considered, emphasizing interdisciplinary collaboration, technological advancement, and environmentally friendly methods. Membrane contractors have the potential to significantly contribute to global efforts for a sustainable and environmentally conscious future as the world moves toward a low-carbon future. Further research on optimizing HFMC materials and understanding their industrial effect is essential to fully realize their potential in large-scale CO<sub>2</sub> separation processes.</div></div>","PeriodicalId":18322,"journal":{"name":"Materials Today Sustainability","volume":"29 ","pages":"Article 101056"},"PeriodicalIF":7.1,"publicationDate":"2024-12-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143135585","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Low-temperature oxidative coupling of methane: A review

IF 7.1 3区材料科学 Q1 GREEN & SUSTAINABLE SCIENCE & TECHNOLOGY

Materials Today Sustainability

Pub Date : 2024-12-02 DOI: 10.1016/j.mtsust.2024.101053

Jingbo Hu , Yilin Zhao , Fangwei Liu , Xutao Chen , Liping Xiao , Shihui Zou , Jie Fan

The oxidative coupling of methane (OCM) has garnered significant interest as an effective technology for the direct upgrading of methane. However, the associated high temperatures and over-oxidation of the desired products have limited its large-scale application. This article reviews current strategies for low-temperature OCM reactions (T ≤ 700 °C), including the promotion of ·CH₃ generation, the introduction of surface coupling of ·CH₃, and other engineering approaches. The summary outlines pertinent strategies and challenges that are anticipated to inspire future research in the design of low-temperature OCM catalysts.

引用次数: 0

Conversion of waste photovoltaic silicon into silicon-carbon nanocages for lithium batteries anodes preparation

IF 7.1 3区材料科学 Q1 GREEN & SUSTAINABLE SCIENCE & TECHNOLOGY

Materials Today Sustainability

Pub Date : 2024-12-01 DOI: 10.1016/j.mtsust.2024.101050

Yihao Li , Jie Guan , Xiaojiao Zhang , Jie Yang , Shuai Chen , Yaoguang Guo , Donghai Lin , Qin Xu , Yanlin Wu , Hao Yuan , Jue Dai

As the global demand for renewable energy surges, the mass decommissioning and disposal of photovoltaic (PV) modules pose significant environmental and economic challenges. In particular, the accumulation of waste silicon from these modules calls for efficient recycling solutions. Silicon possesses a large volume expansion problem during repeated de-embedding of lithium, we instead utilize electrospinning technology to encapsulate the waste silicon in nanocages and introduce titanium dioxide and silver into the structure. A one-step calcination process produces nanoparticle-loaded nanofiber cages, with in situ TiO₂ and Ag particles enhancing structural integrity. The silicon-carbon nanofiber (SATCNF) composite exhibits outstanding electrochemical performance, retaining a reversible capacity of 466.3 mAh/g after 50 cycles at a current density of 0.1 A/g. Furthermore, it demonstrates robust stability during high-rate charge and discharge cycles, maintaining substantial capacity even under elevated current densities. This work not only provides a pathway for mitigating the environmental burden of waste silicon but also contributes to advancements in LIB technology for sustainable energy storage.

随着全球对可再生能源需求的激增，光伏（PV）组件的大规模退役和处置带来了重大的环境和经济挑战。特别是，这些组件中积累的废硅需要高效的回收解决方案。硅在反复脱嵌锂的过程中存在体积膨胀问题，因此我们利用电纺丝技术将废硅封装在纳米笼中，并在结构上引入二氧化钛和银。一步式煅烧工艺生产出纳米粒子负载纳米纤维笼，原位二氧化钛和银粒子增强了结构的完整性。硅碳纳米纤维（SATCNF）复合材料具有出色的电化学性能，在电流密度为 0.1 A/g 的条件下，循环 50 次后仍能保持 466.3 mAh/g 的可逆容量。此外，它在高速充放电循环过程中表现出强大的稳定性，即使在电流密度升高的情况下也能保持可观的容量。这项工作不仅为减轻废硅对环境造成的负担提供了一条途径，还有助于推动可持续储能的 LIB 技术的发展。

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Zinc oxide and its engineered derivative nanomaterials: Insight into energy, environmental, medical, agricultural, and food applications 氧化锌及其工程衍生物纳米材料：能源、环境、医疗、农业和食品应用透视

IF 7.1 3区材料科学 Q1 GREEN & SUSTAINABLE SCIENCE & TECHNOLOGY

Materials Today Sustainability

Pub Date : 2024-11-19 DOI: 10.1016/j.mtsust.2024.101051

Gemechu Fikadu Aaga

Zinc oxide and zinc oxide-based nanomaterials are among the top materials in the fields of nanomaterials applications. On the other hand, the current global challenge of providing sustainable energy, a safe environment, well-improved medication, and sustainable agriculture, especially for developing countries, and safe food is becoming increasingly difficult for governments and scientists. In this review, the potential applications of ZnO and ZnO-based nanomaterials in the energy, environmental, medical, agricultural, and food fields were explored. These nanomaterials have been reported to be important materials for energy storage, conversion, harvesting, and efficient solar cell material, while their efficiency and stability can be triggered by doping or compositing them with another material. Their application in pollutant elimination as a photocatalyst, electrocatalyst, and adsorbent has been reported to be promising, while the material regeneration and reuse in this field still need intensive investigation. The various study findings indicated that they are highly applicable in medicine as a drug, drug targeting materials, catalysts in drug synthesis, and efficient antimicrobials. ZnO and its derivative nanomaterials have also been explored and found to be potential fertilizers in agriculture, especially as a source of Zn, while also improving the effective use of other fertilizers through the slow-release technique. In addition, the different study findings showed that they can be used as food packaging materials and also extend the shelf life of food. The results of this study indicate that ZnO and its engineered derivative nanomaterials are promising materials for future renewable energy, safe environments, improved medication, agriculture, and food industries.

氧化锌和基于氧化锌的纳米材料是纳米材料应用领域的顶级材料之一。另一方面，提供可持续能源、安全环境、良好的药物、可持续农业（尤其是发展中国家）和安全食品等当前的全球性挑战对各国政府和科学家来说正变得越来越困难。本综述探讨了氧化锌和氧化锌基纳米材料在能源、环境、医疗、农业和食品领域的潜在应用。据报道，这些纳米材料是能源储存、转换、收集的重要材料，也是高效太阳能电池的材料。据报道，它们作为光催化剂、电催化剂和吸附剂在消除污染物方面的应用前景广阔，但该领域的材料再生和再利用仍需深入研究。各种研究结果表明，它们作为药物、药物靶向材料、药物合成催化剂和高效抗菌剂，在医药领域具有很高的应用价值。对氧化锌及其衍生物纳米材料的研究还发现，它们是潜在的农业肥料，尤其是作为锌的来源，同时还能通过缓释技术提高其他肥料的有效利用率。此外，不同的研究结果表明，它们还可用作食品包装材料，延长食品的保质期。这项研究结果表明，氧化锌及其工程衍生物纳米材料是未来可再生能源、安全环境、改良药物、农业和食品工业中大有可为的材料。

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引用次数: 0