Pub Date : 2024-11-17DOI: 10.1016/j.jece.2024.114844
Zhixun Wei , Shuyan Yu , Chunhong Shi , Congju Li
This study examines the sources, hazards, occurrence forms, and removal mechanisms of nitrogen (N) and phosphorus (P) in polluted waters. Furthermore, it critically reviews various studies on adsorbents for removing N/P-containing pollutants from wastewater, such as activated carbon and mineral-based adsorbents. These adsorbents employ various adsorption mechanisms, such as electrostatic attraction and chemisorption. These adsorbents demonstrate efficacy in simultaneously removing nitrate and phosphate from aqueous solutions. Mineral-based adsorbents exhibit high adsorption capacity for N and P pollutants, potentially enabling a "waste for waste" approach. However, developing cost-effective adsorbents is crucial for long-term environmental and economic sustainability. This review offers a novel systematic analysis of adsorbents for N and P removal via co-adsorption. Moreover, this study explores future research directions in advanced purification technologies, adsorbent regeneration, and recycling of spent adsorbents.
{"title":"Research progress of simultaneous nitrogen and phosphorus removal adsorbents in wastewater treatment","authors":"Zhixun Wei , Shuyan Yu , Chunhong Shi , Congju Li","doi":"10.1016/j.jece.2024.114844","DOIUrl":"10.1016/j.jece.2024.114844","url":null,"abstract":"<div><div>This study examines the sources, hazards, occurrence forms, and removal mechanisms of nitrogen (N) and phosphorus (P) in polluted waters. Furthermore, it critically reviews various studies on adsorbents for removing N/P-containing pollutants from wastewater, such as activated carbon and mineral-based adsorbents. These adsorbents employ various adsorption mechanisms, such as electrostatic attraction and chemisorption. These adsorbents demonstrate efficacy in simultaneously removing nitrate and phosphate from aqueous solutions. Mineral-based adsorbents exhibit high adsorption capacity for N and P pollutants, potentially enabling a \"waste for waste\" approach. However, developing cost-effective adsorbents is crucial for long-term environmental and economic sustainability. This review offers a novel systematic analysis of adsorbents for N and P removal via co-adsorption. Moreover, this study explores future research directions in advanced purification technologies, adsorbent regeneration, and recycling of spent adsorbents.</div></div>","PeriodicalId":15759,"journal":{"name":"Journal of Environmental Chemical Engineering","volume":"12 6","pages":"Article 114844"},"PeriodicalIF":7.4,"publicationDate":"2024-11-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142652058","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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 : 2024-11-14DOI: 10.1016/j.jece.2024.114812
Basiru O. Yusuf , Mustapha Umar , Mansur Aliyu , Aliyu M. Alhassan , Mohammed Mosaad Awad , Omer A. Taialla , AbdulHakam Shafiu Abdullahi , Jamilu Nura Musa , Khalid R. Alhooshani , Saheed A. Ganiyu
The increasing environmental challenges caused by industrial and urban development call for innovative remediation strategies. This review focuses on the novel advancements in MXene-based photocatalysts, highlighting the unique potential of MXenes, a two-dimensional family of transition metal carbides and nitrides for environmental cleanup. Unlike conventional materials, MXenes combine exceptional electronic, chemical, and mechanical properties, making them highly effective in utilizing solar energy for pollutant degradation. Their large surface area, tunable surface chemistry, functional groups, and high electrical conductivity allow for precise customization of catalytic sites, boosting their photocatalytic performance. This work explores the synthesis, properties, and mechanisms behind MXenes’ superior photocatalytic activity and their application in environmental remediation. It also addresses the challenges of scaling MXene systems for practical use, along with the opportunities they offer for broader environmental solutions. By highlighting the future prospects of MXene-based photocatalysts, this review emphasizes their potential to transform the field of environmental remediation.
{"title":"Recent advances and future prospects of MXene-based photocatalysts in environmental remediations","authors":"Basiru O. Yusuf , Mustapha Umar , Mansur Aliyu , Aliyu M. Alhassan , Mohammed Mosaad Awad , Omer A. Taialla , AbdulHakam Shafiu Abdullahi , Jamilu Nura Musa , Khalid R. Alhooshani , Saheed A. Ganiyu","doi":"10.1016/j.jece.2024.114812","DOIUrl":"10.1016/j.jece.2024.114812","url":null,"abstract":"<div><div>The increasing environmental challenges caused by industrial and urban development call for innovative remediation strategies. This review focuses on the novel advancements in MXene-based photocatalysts, highlighting the unique potential of MXenes, a two-dimensional family of transition metal carbides and nitrides for environmental cleanup. Unlike conventional materials, MXenes combine exceptional electronic, chemical, and mechanical properties, making them highly effective in utilizing solar energy for pollutant degradation. Their large surface area, tunable surface chemistry, functional groups, and high electrical conductivity allow for precise customization of catalytic sites, boosting their photocatalytic performance. This work explores the synthesis, properties, and mechanisms behind MXenes’ superior photocatalytic activity and their application in environmental remediation. It also addresses the challenges of scaling MXene systems for practical use, along with the opportunities they offer for broader environmental solutions. By highlighting the future prospects of MXene-based photocatalysts, this review emphasizes their potential to transform the field of environmental remediation.</div></div>","PeriodicalId":15759,"journal":{"name":"Journal of Environmental Chemical Engineering","volume":"12 6","pages":"Article 114812"},"PeriodicalIF":7.4,"publicationDate":"2024-11-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142652546","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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 : 2024-11-14DOI: 10.1016/j.jece.2024.114782
Yi-fu Liu , Rui-tang Guo , Sheng-hui Guo , Ling-qi Yu , Ji-song Yan , Wei-guo Pan
Photocatalytic CO2 reduction is considered an emerging technology that utilizes solar energy to resolve energy crisis and environmental issues. In recent years, piezoelectric materials have attracted increasing interest in photocatalysis. The piezoelectric field generated by the stress or strain induced piezo-potential in the piezoelectric material efficiently fosters the separation and migration of charge carriers, improving photocatalytic performances significantly. In this review, the definition of piezoelectricity, the overview of piezoelectric materials, and the photocatalytic CO2 reduction principles based on piezoelectric materials are briefly introduced. In addition, optimization strategies for photocatalytic CO2 reduction based on piezoelectric materials are presented, including surface engineering, defect engineering, heterojunction construction, and introducing polarization. Finally, several prospects and recommendations of piezoelectric materials to address the issues in photocatalytic CO2 reduction are proposed. The piezoelectric materials emerge as a distinctive advantage in photocatalysis, meriting deeper and more nuanced exploration in the future.
光催化还原二氧化碳被认为是一种利用太阳能解决能源危机和环境问题的新兴技术。近年来，压电材料在光催化领域受到越来越多的关注。压电材料中由应力或应变引起的压电势所产生的压电场可有效促进电荷载流子的分离和迁移，从而显著提高光催化性能。本综述简要介绍了压电的定义、压电材料概述以及基于压电材料的光催化二氧化碳还原原理。此外，还介绍了基于压电材料的光催化还原 CO2 的优化策略，包括表面工程、缺陷工程、异质结构造和引入极化。最后，针对光催化还原二氧化碳中存在的问题，提出了压电材料的几种前景和建议。压电材料在光催化领域具有独特的优势，值得在未来进行更深入、更细致的探索。
{"title":"Recent progress of piezoelectric materials applied in photocatalytic CO2 reduction: A review","authors":"Yi-fu Liu , Rui-tang Guo , Sheng-hui Guo , Ling-qi Yu , Ji-song Yan , Wei-guo Pan","doi":"10.1016/j.jece.2024.114782","DOIUrl":"10.1016/j.jece.2024.114782","url":null,"abstract":"<div><div>Photocatalytic CO<sub>2</sub> reduction is considered an emerging technology that utilizes solar energy to resolve energy crisis and environmental issues. In recent years, piezoelectric materials have attracted increasing interest in photocatalysis. The piezoelectric field generated by the stress or strain induced piezo-potential in the piezoelectric material efficiently fosters the separation and migration of charge carriers, improving photocatalytic performances significantly. In this review, the definition of piezoelectricity, the overview of piezoelectric materials, and the photocatalytic CO<sub>2</sub> reduction principles based on piezoelectric materials are briefly introduced. In addition, optimization strategies for photocatalytic CO<sub>2</sub> reduction based on piezoelectric materials are presented, including surface engineering, defect engineering, heterojunction construction, and introducing polarization. Finally, several prospects and recommendations of piezoelectric materials to address the issues in photocatalytic CO<sub>2</sub> reduction are proposed. The piezoelectric materials emerge as a distinctive advantage in photocatalysis, meriting deeper and more nuanced exploration in the future.</div></div>","PeriodicalId":15759,"journal":{"name":"Journal of Environmental Chemical Engineering","volume":"12 6","pages":"Article 114782"},"PeriodicalIF":7.4,"publicationDate":"2024-11-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142652059","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Hexavalent Cr (CrVI) compounds are a common environmental pollutant that causes carcinogenesis and interferes with the normal process of the cells. Layered double hydroxides (LDHs) as a class of ionic solids with hydroxylated metals in two layers and an intermediate layer containing water molecules and anions, e.g., CO32−, SO42−, Cl−, can be used for wastewater treatment, controlled drug delivery, pharmaceuticals, cosmetics, and electrochemical sensors. The use of LDHs to remove CrVI from aqueous environments has been considered because they have advantages such as biocompatibility and high efficiency. CrVI is converted to the less dangerous trivalent Cr (CrIII) by some of the LDHs, e.g., MgFe LDH, MgAl LDH, and NiFe LDH. In this review, after a summary of the LDHs principle, the main mechanisms of CrVI removal, including adsorption, interlayer ion exchange, and redox process, and the kinetics of CrVI removal have been described. The influential factors in CrVI removal efficiency by LDHs, including modification of LDHs, pH, and the effect of LDH interlayer anions, were reviewed in depth. The appropriate selection of interlayer anion, using intercalated LDHs, LDHs composite developing, as well as divalent and trivalent metals of LDHs, is effective in its performance; Also, modifying LDHs and preparing LDH-composites can improve the efficiency of removing CrVI.
{"title":"Layered double hydroxides as versatile materials for detoxification of hexavalent chromium: Mechanism, kinetics, and environmental factors","authors":"Seyed Saman Nemati , Gholamreza Dehghan , Alireza Khataee , Leila Alidokht , Nurbolat Kudaibergenov","doi":"10.1016/j.jece.2024.114742","DOIUrl":"10.1016/j.jece.2024.114742","url":null,"abstract":"<div><div>Hexavalent Cr (Cr<sup>VI</sup>) compounds are a common environmental pollutant that causes carcinogenesis and interferes with the normal process of the cells. Layered double hydroxides (LDHs) as a class of ionic solids with hydroxylated metals in two layers and an intermediate layer containing water molecules and anions, e.g., CO<sub>3</sub><sup>2−</sup>, SO<sub>4</sub><sup>2−</sup>, Cl<sup>−</sup>, can be used for wastewater treatment, controlled drug delivery, pharmaceuticals, cosmetics, and electrochemical sensors. The use of LDHs to remove Cr<sup>VI</sup> from aqueous environments has been considered because they have advantages such as biocompatibility and high efficiency. Cr<sup>VI</sup> is converted to the less dangerous trivalent Cr (Cr<sup>III</sup>) by some of the LDHs, e.g., MgFe LDH, MgAl LDH, and NiFe LDH. In this review, after a summary of the LDHs principle, the main mechanisms of Cr<sup>VI</sup> removal, including adsorption, interlayer ion exchange, and redox process, and the kinetics of Cr<sup>VI</sup> removal have been described. The influential factors in Cr<sup>VI</sup> removal efficiency by LDHs, including modification of LDHs, pH, and the effect of LDH interlayer anions, were reviewed in depth. The appropriate selection of interlayer anion, using intercalated LDHs, LDHs composite developing, as well as divalent and trivalent metals of LDHs, is effective in its performance; Also, modifying LDHs and preparing LDH-composites can improve the efficiency of removing Cr<sup>VI</sup>.</div></div>","PeriodicalId":15759,"journal":{"name":"Journal of Environmental Chemical Engineering","volume":"12 6","pages":"Article 114742"},"PeriodicalIF":7.4,"publicationDate":"2024-11-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142652057","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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 : 2024-11-10DOI: 10.1016/j.jece.2024.114737
Xuan Zhang , Wei Ye , Weihong Jiang , Yang Gu
Pyruvate-formate lyases (PFLs) are crucial catalysts that employ both a core enzyme and an activating enzyme to facilitate the conversion of pyruvate to formate and acetyl-CoA, as well as its reverse reaction, in anaerobic and microaerobic prokaryotes. Because of the importance in formate metabolism in microorganisms, PFLs have had many potential applications in biological synthesis, environmental improvement, and medical treatment. Furthermore, formate is a direct product of CO2 reduction via the catalysis of formate dehydrogenase or chemical conversion, thus suggesting potential applications for PFLs in CO2 utilization by in vivo cascades or in vitro chemo-enzymatic reaction sequences, which, however, has not received attention to date. In this review, we summarize recent progress in the characterization and functionality of PFLs and consider potential applications of these enzymes. The directions of future research and possible challenges to the application of PFLs are also discussed.
{"title":"Pyruvate-formate lyase and beyond","authors":"Xuan Zhang , Wei Ye , Weihong Jiang , Yang Gu","doi":"10.1016/j.jece.2024.114737","DOIUrl":"10.1016/j.jece.2024.114737","url":null,"abstract":"<div><div>Pyruvate-formate lyases (PFLs) are crucial catalysts that employ both a core enzyme and an activating enzyme to facilitate the conversion of pyruvate to formate and acetyl-CoA, as well as its reverse reaction, in anaerobic and microaerobic prokaryotes. Because of the importance in formate metabolism in microorganisms, PFLs have had many potential applications in biological synthesis, environmental improvement, and medical treatment. Furthermore, formate is a direct product of CO<sub>2</sub> reduction via the catalysis of formate dehydrogenase or chemical conversion, thus suggesting potential applications for PFLs in CO<sub>2</sub> utilization by <em>in vivo</em> cascades or <em>in vitro</em> chemo-enzymatic reaction sequences, which, however, has not received attention to date. In this review, we summarize recent progress in the characterization and functionality of PFLs and consider potential applications of these enzymes. The directions of future research and possible challenges to the application of PFLs are also discussed.</div></div>","PeriodicalId":15759,"journal":{"name":"Journal of Environmental Chemical Engineering","volume":"12 6","pages":"Article 114737"},"PeriodicalIF":7.4,"publicationDate":"2024-11-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142652056","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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 : 2024-11-10DOI: 10.1016/j.jece.2024.114748
Wenhua Li , Yan Tan , Guanjia Shang , Liqun Chen , Zhibin Wu , Yiqing Lin , Lin Luo , Yuan Yang
With the rapid increase application of metallic nanoparticles (MNPs) in agriculture and related fields, potential risk of MNPs released to agricultural systems have been aroused intensive attention. A comprehensive investigation of the interaction between MNPs and plant including the uptake, accumulation and transformation in plant and its ecological effect of plants induced by MNPs may improve production and food safety of the crop. In this work, emerging techniques for the characterization, determination and sample pretreatment of metallic nanoparticles in biological matrices were reviewed. And the recent research progress on the MNPs’ uptake, accumulation, transformation and its nanotoxicity of plants were summarized. Finally, the current challenges in this area are pointed out and developments of future investigation are also discussed.
{"title":"Analysis, accumulation, transformation, and impact of metallic nanoparticles in plants","authors":"Wenhua Li , Yan Tan , Guanjia Shang , Liqun Chen , Zhibin Wu , Yiqing Lin , Lin Luo , Yuan Yang","doi":"10.1016/j.jece.2024.114748","DOIUrl":"10.1016/j.jece.2024.114748","url":null,"abstract":"<div><div>With the rapid increase application of metallic nanoparticles (MNPs) in agriculture and related fields, potential risk of MNPs released to agricultural systems have been aroused intensive attention. A comprehensive investigation of the interaction between MNPs and plant including the uptake, accumulation and transformation in plant and its ecological effect of plants induced by MNPs may improve production and food safety of the crop. In this work, emerging techniques for the characterization, determination and sample pretreatment of metallic nanoparticles in biological matrices were reviewed. And the recent research progress on the MNPs’ uptake, accumulation, transformation and its nanotoxicity of plants were summarized. Finally, the current challenges in this area are pointed out and developments of future investigation are also discussed.</div></div>","PeriodicalId":15759,"journal":{"name":"Journal of Environmental Chemical Engineering","volume":"12 6","pages":"Article 114748"},"PeriodicalIF":7.4,"publicationDate":"2024-11-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142652554","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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 : 2024-11-09DOI: 10.1016/j.jece.2024.114718
Kaiyue Tian , Xinxin Xu , Junfeng Zhu , Sitong Cao , Zhonglong Yin , Feilong Li , Weiben Yang
Membrane fouling seriously impedes the application of membrane technology in water treatment. Although oxidation achieved intensive attention in membrane fouling control, controversy results were observed in many works since oxidation may accelerate fouling and damage membrane under some circumstances and the underlying mechanism still remained unclear in complex water matrices. This study provides a comprehensive review on the recent progress of pre-oxidation and oxidation cleaning in fouling control for membrane (e.g., microfiltration (MF), ultrafiltration (UF), nanofiltration (NF), reverse osmosis (RO), forward osmosis (FO), membrane distillation (MD)). Common oxidation approaches (e.g., chlorine, ozonation, H2O2, sulfate radical (SO4●–), potassium permanganate (KMnO4) and Fe(VI) based oxidation) were systematically summarized and compared, along with their positive and negative impact on fouling mitigation. Furthermore, the fouling control performance and underlying mechanism were reviewed according to the recent published literatures. Ultimately, the challenges and future prospects of oxidation technology in membrane fouling control application were also proposed based on the current review. Overall, this review may provide the guidance for developing advanced oxidation strategy in controlling membrane fouling in water treatment and minimizing the potential drawbacks and risks of oxidation as a membrane fouling control strategy.
{"title":"A critical review of oxidation for membrane fouling control in water treatment: Applications, mechanisms and challenges","authors":"Kaiyue Tian , Xinxin Xu , Junfeng Zhu , Sitong Cao , Zhonglong Yin , Feilong Li , Weiben Yang","doi":"10.1016/j.jece.2024.114718","DOIUrl":"10.1016/j.jece.2024.114718","url":null,"abstract":"<div><div>Membrane fouling seriously impedes the application of membrane technology in water treatment. Although oxidation achieved intensive attention in membrane fouling control, controversy results were observed in many works since oxidation may accelerate fouling and damage membrane under some circumstances and the underlying mechanism still remained unclear in complex water matrices. This study provides a comprehensive review on the recent progress of pre-oxidation and oxidation cleaning in fouling control for membrane (e.g., microfiltration (MF), ultrafiltration (UF), nanofiltration (NF), reverse osmosis (RO), forward osmosis (FO), membrane distillation (MD)). Common oxidation approaches (e.g., chlorine, ozonation, H<sub>2</sub>O<sub>2</sub>, sulfate radical (SO<sub>4</sub><sup>●–</sup>), potassium permanganate (KMnO<sub>4</sub>) and Fe(VI) based oxidation) were systematically summarized and compared, along with their positive and negative impact on fouling mitigation. Furthermore, the fouling control performance and underlying mechanism were reviewed according to the recent published literatures. Ultimately, the challenges and future prospects of oxidation technology in membrane fouling control application were also proposed based on the current review. Overall, this review may provide the guidance for developing advanced oxidation strategy in controlling membrane fouling in water treatment and minimizing the potential drawbacks and risks of oxidation as a membrane fouling control strategy.</div></div>","PeriodicalId":15759,"journal":{"name":"Journal of Environmental Chemical Engineering","volume":"12 6","pages":"Article 114718"},"PeriodicalIF":7.4,"publicationDate":"2024-11-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142652553","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
MXenes are two-dimensional (2D) materials with notable properties, attracting significant attention. These materials are often synthesized with surface functionalization like -O, -OH, and -F, which regulate their properties. While experimental synthesis typically results in mixed terminations, computational studies predict pure terminations. This study provides a comprehensive overview of the characteristics and potential applications of chemical termination in MXenes. The type of terminating groups depends on the fabrication media: aqueous media yields -OH and -O terminations, alkaline media yields -F, -Cl, -Br, and -I, ammonium bifluoride etching yields -NH4+ and NH3, and direct synthesis methods yield various terminations on demand. We also explore the role of photo-induced non-thermalized heated electrons at interfaces in plasmonic-driven chemical processes. Understanding these electron dynamics, which occur before thermalization (∼125 fs), remains challenging. Femtosecond time-resolved spectroscopy was used to study these dynamics in MXene/molecule complexes. This technique allows distinguishing between thermalized and non-thermalized electron responses. There are two non-thermalization channels: (i) rapid transport of non-heated electrons to attached molecules in less than 50 fs, and (ii) heating of adsorbed molecules due to non-thermalized electron scattering within 125 fs. These paths depend on the irradiating wavelength and the energy differential between molecules and MXene. Computational predictions of thermodynamically stable MXene compositions are essential for directing experimental goals. This work also presents a thorough computational investigation for thermodynamically stable MXenes with 11 surface terminating groups. The analysis of results investigates factors essential for assessing the thermodynamic stability of MXenes, revealing that the chemistry of MXene surface terminations is significantly crucial to hot electron dynamics and thermodynamic stability. This review also offers insights into the MXene termination process, synthesis media, and synthetic strategies, highlighting the importance of intercalation process. It also elucidates mechanisms and opportunities in hot electron theory, interfacial heat transfer, and photocatalysis.
{"title":"Reliance of MXene terminating groups on various synthetic strategies and its hot electron dynamics at MXene interfaces","authors":"Pei Zhang , Qi Zheng , Tariq Bashir , Tariq Ali , Sikandar Khan , Asma M. Alenad , Saleem Raza","doi":"10.1016/j.jece.2024.114708","DOIUrl":"10.1016/j.jece.2024.114708","url":null,"abstract":"<div><div>MXenes are two-dimensional (2D) materials with notable properties, attracting significant attention. These materials are often synthesized with surface functionalization like -O, -OH, and -F, which regulate their properties. While experimental synthesis typically results in mixed terminations, computational studies predict pure terminations. This study provides a comprehensive overview of the characteristics and potential applications of chemical termination in MXenes. The type of terminating groups depends on the fabrication media: aqueous media yields -OH and -O terminations, alkaline media yields -F, -Cl, -Br, and -I, ammonium bifluoride etching yields -NH<sup>4+</sup> and NH<sub>3</sub>, and direct synthesis methods yield various terminations on demand. We also explore the role of photo-induced non-thermalized heated electrons at interfaces in plasmonic-driven chemical processes. Understanding these electron dynamics, which occur before thermalization (∼125 fs), remains challenging. Femtosecond time-resolved spectroscopy was used to study these dynamics in MXene/molecule complexes. This technique allows distinguishing between thermalized and non-thermalized electron responses. There are two non-thermalization channels: (i) rapid transport of non-heated electrons to attached molecules in less than 50 fs, and (ii) heating of adsorbed molecules due to non-thermalized electron scattering within 125 fs. These paths depend on the irradiating wavelength and the energy differential between molecules and MXene. Computational predictions of thermodynamically stable MXene compositions are essential for directing experimental goals. This work also presents a thorough computational investigation for thermodynamically stable MXenes with 11 surface terminating groups. The analysis of results investigates factors essential for assessing the thermodynamic stability of MXenes, revealing that the chemistry of MXene surface terminations is significantly crucial to hot electron dynamics and thermodynamic stability. This review also offers insights into the MXene termination process, synthesis media, and synthetic strategies, highlighting the importance of intercalation process. It also elucidates mechanisms and opportunities in hot electron theory, interfacial heat transfer, and photocatalysis.</div></div>","PeriodicalId":15759,"journal":{"name":"Journal of Environmental Chemical Engineering","volume":"12 6","pages":"Article 114708"},"PeriodicalIF":7.4,"publicationDate":"2024-11-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142652555","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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 : 2024-11-08DOI: 10.1016/j.jece.2024.114692
Baiqiang Zhang , Hengfei Zuo , Bo Wu , Kenji Kamiya , Lu Ma , Nobusuke Kobayashi , Yanyang Ma , Tingxiang Jin , Yuhui Chen
The conversion of CO2 into CO is a crucial strategy to mitigate some of climate change's adverse effects and produce syngas. The dielectric barrier discharge (DBD) plasma is a promising technique in CO2 decomposition. However, challenges persist, such as low conversion rates and energy efficiency. This paper summarizes current research advances in plasma-catalyzed CO2 decomposition reactions and the recent optimization of the DBD plasma-catalytic system. The methods to improve the conversion rate and energy efficiency of the CO2 decomposition reaction are analyzed from four aspects: reactor design, operation parameters, discharge gas composition, filling materials and catalysts. It highlights the primary methods for promoting the reaction performance in the plasma-catalyzed system. Finally, the mechanisms of plasma-catalyzed CO2 decomposition reactions are discussed from the aspects of gas-phase reaction and surface reaction, and the strategies for improving plasma-catalyzed CO2 decomposition in the future are proposed.
{"title":"Recent progress in CO2 splitting processes with non-thermal plasma-assisted","authors":"Baiqiang Zhang , Hengfei Zuo , Bo Wu , Kenji Kamiya , Lu Ma , Nobusuke Kobayashi , Yanyang Ma , Tingxiang Jin , Yuhui Chen","doi":"10.1016/j.jece.2024.114692","DOIUrl":"10.1016/j.jece.2024.114692","url":null,"abstract":"<div><div>The conversion of CO<sub>2</sub> into CO is a crucial strategy to mitigate some of climate change's adverse effects and produce syngas. The dielectric barrier discharge (DBD) plasma is a promising technique in CO<sub>2</sub> decomposition. However, challenges persist, such as low conversion rates and energy efficiency. This paper summarizes current research advances in plasma-catalyzed CO<sub>2</sub> decomposition reactions and the recent optimization of the DBD plasma-catalytic system. The methods to improve the conversion rate and energy efficiency of the CO<sub>2</sub> decomposition reaction are analyzed from four aspects: reactor design, operation parameters, discharge gas composition, filling materials and catalysts. It highlights the primary methods for promoting the reaction performance in the plasma-catalyzed system. Finally, the mechanisms of plasma-catalyzed CO<sub>2</sub> decomposition reactions are discussed from the aspects of gas-phase reaction and surface reaction, and the strategies for improving plasma-catalyzed CO<sub>2</sub> decomposition in the future are proposed.</div></div>","PeriodicalId":15759,"journal":{"name":"Journal of Environmental Chemical Engineering","volume":"12 6","pages":"Article 114692"},"PeriodicalIF":7.4,"publicationDate":"2024-11-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142652547","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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 : 2024-11-08DOI: 10.1016/j.jece.2024.114719
Xiaowen Jiang , Shuyan Guan , Linfeng Chen , Fengxia Deng , Hui Yan , Fengyang Liu , Xuedong Zhai , Carlos A. Martínez-Huitle , Jing Ding
Sulfite, a common industrial by-product, catalyzes cost-effective advanced oxidation processes (AOPs) for wastewater treatment. Carbon-based materials mainly serve as charge transfer media, and play a catalytic role in heterogeneous sulfite activation processes. Previous literatures often overlook recent advancements in modifying carbon materials and their functional categorization, which is crucial for improving catalytic performance. Addressing these gaps, this review incorporates up-to-date bibliometric analyses, providing a thorough overview of carbon catalyst types and their environmental applications. It examines structural and surface modifications, the integration of metal and non-metal doping, and heterostructures, as well as their interactions with sulfite through both radical and non-radical pathways. Additionally, it assesses the implications of these modifications for catalytic efficiency and environmental safety. Ultimately, this review systematically categorizes carbon-based materials and mechanisms, promoting the development of more effective and sustainable sulfite activation strategies for pollution control.
{"title":"Designing carbon-based catalysts for enhanced sulfite activation: Strategies for pollutant degradation","authors":"Xiaowen Jiang , Shuyan Guan , Linfeng Chen , Fengxia Deng , Hui Yan , Fengyang Liu , Xuedong Zhai , Carlos A. Martínez-Huitle , Jing Ding","doi":"10.1016/j.jece.2024.114719","DOIUrl":"10.1016/j.jece.2024.114719","url":null,"abstract":"<div><div>Sulfite, a common industrial by-product, catalyzes cost-effective advanced oxidation processes (AOPs) for wastewater treatment. Carbon-based materials mainly serve as charge transfer media, and play a catalytic role in heterogeneous sulfite activation processes. Previous literatures often overlook recent advancements in modifying carbon materials and their functional categorization, which is crucial for improving catalytic performance. Addressing these gaps, this review incorporates up-to-date bibliometric analyses, providing a thorough overview of carbon catalyst types and their environmental applications. It examines structural and surface modifications, the integration of metal and non-metal doping, and heterostructures, as well as their interactions with sulfite through both radical and non-radical pathways. Additionally, it assesses the implications of these modifications for catalytic efficiency and environmental safety. Ultimately, this review systematically categorizes carbon-based materials and mechanisms, promoting the development of more effective and sustainable sulfite activation strategies for pollution control.</div></div>","PeriodicalId":15759,"journal":{"name":"Journal of Environmental Chemical Engineering","volume":"12 6","pages":"Article 114719"},"PeriodicalIF":7.4,"publicationDate":"2024-11-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142652552","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
扫码关注我们
求助内容：
应助结果提醒方式：
京公网安备 11010802042870号