Journal of Environmental Sciences-china最新文献_第10页

Characteristics of phosphorus transformation from vivianite mediated by sulphide

IF 5.9 2区环境科学与生态学

Journal of Environmental Sciences-china Pub Date : 2024-08-14 DOI: 10.1016/j.jes.2024.08.005

Zijun Song , Jing Yang , Yumei Hua , Guanglong Liu , Guanghui Yu , Jianwei Zhao , Jinlong Hu , Xiaoqiong Wan

{"title":"Characteristics of phosphorus transformation from vivianite mediated by sulphide","authors":"Zijun Song , Jing Yang , Yumei Hua , Guanglong Liu , Guanghui Yu , Jianwei Zhao , Jinlong Hu , Xiaoqiong Wan","doi":"10.1016/j.jes.2024.08.005","DOIUrl":"10.1016/j.jes.2024.08.005","url":null,"abstract":"<div><div>The release of phosphorus (P) from anaerobic sediments becomes the dominant source of P loading with effective control of external P pollution. As a crucial component responsible for binding P, vivianite (Fe<sub>3</sub>(PO<sub>4</sub>)<sub>2</sub>·8H<sub>2</sub>O) in sediment inevitably impacts the P level and transformation. The release of P from vivianite mediated by sulphide was investigated using simulated overlying water-sediment and chemical reaction systems. The percentage of redox-stable P in the sediments increased with vivianite input in the overlying water-sediment system. Increasing P concentrations in both the overlying water and interstitial water occurred before day 10, accompanied by a decreasing percentage of redox-sensitive P in the sediments driven by sulphide. The continuous release of P from vivianite clarifies the influence of sulphide on promoting vivianite dissolution in a chemical reaction system with vivianite and sulphide solution. Additionally, Mössbauer spectrum and nanoscale secondary ion mass spectrometry (NanoSIMS) images based on the chemical reaction with <sup>57</sup>Fe isotope labelling demonstrated the presence of initial vivianite, newly produced vivianite, and FeS<sub>2</sub>.</div></div>","PeriodicalId":15788,"journal":{"name":"Journal of Environmental Sciences-china","volume":"154 ","pages":"Pages 52-62"},"PeriodicalIF":5.9,"publicationDate":"2024-08-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143151555","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Long-term cadmium stress influenced the immune response of Pardosa pseudoannulata by modulating its gut microbiota and hemolymph metabolome

IF 5.9 2区环境科学与生态学

Journal of Environmental Sciences-china Pub Date : 2024-08-13 DOI: 10.1016/j.jes.2024.08.008

Jinjin Li , Yuan-de Peng , Rong Zhou , Jie Peng , Qingling She , Xinyi Yang , Juan Wang , Zhi Wang , Qisheng Song

引用次数: 0

Fe oxides nano-modified pumice enhances hydrogenotrophic methanogenesis in anaerobic digestion: Performance and mechanism of microbial community

IF 5.9 2区环境科学与生态学

Journal of Environmental Sciences-china Pub Date : 2024-08-13 DOI: 10.1016/j.jes.2024.08.006

Jiaqi Liu , Yong Zhang , Jian Huang , Lili Yang , Yuzhou Yang , Guohao Deng , Dingcheng Hu , Chuanchuan Yan

{"title":"Fe oxides nano-modified pumice enhances hydrogenotrophic methanogenesis in anaerobic digestion: Performance and mechanism of microbial community","authors":"Jiaqi Liu , Yong Zhang , Jian Huang , Lili Yang , Yuzhou Yang , Guohao Deng , Dingcheng Hu , Chuanchuan Yan","doi":"10.1016/j.jes.2024.08.006","DOIUrl":"10.1016/j.jes.2024.08.006","url":null,"abstract":"<div><div>Anaerobic digestion (AD), as an eco-friendly biological process, shows potential for the decomposition of leachate produced by waste incineration power plants. In this study, the effects of Fe oxides nano-modified pumice (FNP) were investigated on the fresh leachate AD process. Firstly, a simple hydrothermal method was used to prepare FNP, then introduced into the UASB reactor to evaluate its AD efficiency. Results showed that the inclusion of FNP could shorten the lag phase by 10 days compared to the control group. Furthermore, cumulative methane production in the FNP group was enhanced by 20.11%. Mechanistic studies suggested that hydrogenotrophic methanogenesis in the FNP group was more pronounced due to the influence of key enzymes (i.e., dehydrogenase and coenzyme F420). Microbial community analysis demonstrated that FNP could enhance the abundance of <em>Methanosarcina, Proteobacteria, Sytrophomonas</em>, and <em>Limnobacter</em>, which might elevate enzyme activity involved in methane production. These findings suggest that FNP might mediate interspecies electron transfer among these microorganisms, which is essential for efficient leachate treatment.</div></div>","PeriodicalId":15788,"journal":{"name":"Journal of Environmental Sciences-china","volume":"154 ","pages":"Pages 114-127"},"PeriodicalIF":5.9,"publicationDate":"2024-08-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143151017","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Hematopoietic responses to metal-organic frameworks in adult mice following pulmonary exposure

IF 5.9 2区环境科学与生态学

Journal of Environmental Sciences-china Pub Date : 2024-08-10 DOI: 10.1016/j.jes.2024.08.003

Min Li , Linlin Yao , Yuanyuan Wang , Jie Gao , Junjie Ma , Yaquan Liu , Yun Ding , Xuehan Zheng , Liqun Chen , Runzeng Liu , Li Zeng , Guangbo Qu , Guibin Jiang

{"title":"Hematopoietic responses to metal-organic frameworks in adult mice following pulmonary exposure","authors":"Min Li , Linlin Yao , Yuanyuan Wang , Jie Gao , Junjie Ma , Yaquan Liu , Yun Ding , Xuehan Zheng , Liqun Chen , Runzeng Liu , Li Zeng , Guangbo Qu , Guibin Jiang","doi":"10.1016/j.jes.2024.08.003","DOIUrl":"10.1016/j.jes.2024.08.003","url":null,"abstract":"<div><div>The metal-organic frameworks (MOFs) MIL-100 and NH<sub>2</sub>-MIL-125 have hierarchical structure pores with high adsorption capacities and have therefore been suggested for drug delivery, gas storage, catalysis and chemical sensing. The widespread applications of these MOFs raise concerns about the possible release into the environment and subsequent human exposure. Yet, the available knowledge of the toxicity of these MOFs is rather scarce despite the encouraging applications. Here, we investigated the hematopoietic effects in different organs induced by MIL-100 and NH<sub>2</sub>-MIL-125 in mice after intratracheal instillation. The hematopoietic cells in the bone marrow (BM), lungs, and spleen were analyzed through flow cytometry method. Compared to NH<sub>2</sub>-MIL-125, MIL-100 triggered changes in more types of hematopoietic cells in the BM and spleen, but comparable changes in the lungs. In the BM and lungs, both the two MOFs suppressed myelopoiesis on day 1, but promoted myelopoiesis on day 7. In the spleen, by contrast, continuous suppressed myelopoiesis were found on day 1 and day 7. Moreover, changes in megakaryocyte progenitors (MkPs) were only detected in the lungs. These results unveil the potential disruption of hematopoietic homeostasis during inhalation of the two MOFs, which provided in vivo biological effect data for further evaluation of the biosafety of MOFs for future medical applications.</div></div>","PeriodicalId":15788,"journal":{"name":"Journal of Environmental Sciences-china","volume":"156 ","pages":"Pages 30-41"},"PeriodicalIF":5.9,"publicationDate":"2024-08-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143547863","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Ferrihydrite/B, N co-doped biochar composites enhancing tetracycline degradation: The crucial role of boron incorporation in Fe(III) reduction and oxygen activation

IF 5.9 2区环境科学与生态学

Journal of Environmental Sciences-china Pub Date : 2024-08-09 DOI: 10.1016/j.jes.2024.07.013

Yujiang Huang , Tong Hu , Sichen Li , Wenjun Zhou

{"title":"Ferrihydrite/B, N co-doped biochar composites enhancing tetracycline degradation: The crucial role of boron incorporation in Fe(III) reduction and oxygen activation","authors":"Yujiang Huang , Tong Hu , Sichen Li , Wenjun Zhou","doi":"10.1016/j.jes.2024.07.013","DOIUrl":"10.1016/j.jes.2024.07.013","url":null,"abstract":"<div><div>Harnessing the redox potential of biochar to activate airborne O<sub>2</sub> for contaminant removal is challenging. In this study, ferrihydrite (Fh) modified the boron (B), nitrogen (N) co-doped biochars (BCs) composites (Fh/B(n)NC) were developed for enhancing the degradation of a model pollutant, tetracycline (TC), merely by airborne O<sub>2</sub>. Fh/B(3)NC showed excellent O<sub>2</sub> activation activity for efficient TC degradation with a apparent TC degradation rate of 5.54, 6.88, and 22.15 times that of B(3)NC, Fh, and raw BCs, respectively, where <sup>1</sup>O<sub>2</sub> and H<sub>2</sub>O<sub>2</sub> were identified as the dominant ROS for TC degradation. The B incorporation into the carbon lattice of Fh/B(3)NC promoted the generation of electron donors, sp<sup>2</sup> C and the reductive B species, hence boosting Fe(III) reduction and <sup>1</sup>O<sub>2</sub> generation. O<sub>2</sub> adsorption was enhanced due to the positively charged adsorption sites (C-B<sup>+</sup>and N<img>C<sup>+</sup>). And <sup>1</sup>O<sub>2</sub> was generated via Fe(II) catalyzed low-efficient successive one-electron transfer (O<sub>2</sub> → O<sub>2</sub><sup>·−</sup> → <sup>1</sup>O<sub>2</sub>, H<sub>2</sub>O<sub>2</sub>), as well as biochar catalyzed high-efficient two-electron transfer (O<sub>2</sub> → H<sub>2</sub>O<sub>2</sub> → <sup>1</sup>O<sub>2</sub>) that does not involve <sup>.</sup>O<sub>2</sub><sup>−</sup> as the intermediate. Moreover, Fh/B, N co-doped biochar showed a wide pH range, remarkable anti-interference capabilities, and effective detoxification. These findings shed new light on the development of environmentally benign BCs materials capable of degradading organic pollutants.</div></div>","PeriodicalId":15788,"journal":{"name":"Journal of Environmental Sciences-china","volume":"154 ","pages":"Pages 252-263"},"PeriodicalIF":5.9,"publicationDate":"2024-08-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143151016","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Recent advances in bioassays for assessing the toxicity of environmental contaminants in effect-directed analysis

IF 5.9 2区环境科学与生态学

Journal of Environmental Sciences-china Pub Date : 2024-08-08 DOI: 10.1016/j.jes.2024.07.031

Yao Liu , Minjie Li , Qi-Lin Wan , Xun Wang , Monika Mortimer , Wen-Di Fang , Liang-Hong Guo

{"title":"Recent advances in bioassays for assessing the toxicity of environmental contaminants in effect-directed analysis","authors":"Yao Liu , Minjie Li , Qi-Lin Wan , Xun Wang , Monika Mortimer , Wen-Di Fang , Liang-Hong Guo","doi":"10.1016/j.jes.2024.07.031","DOIUrl":"10.1016/j.jes.2024.07.031","url":null,"abstract":"<div><div>Chemical cocktails in the environment can cause adverse impacts on ecosystems and human health even at low concentrations. Effect-directed analysis (EDA) has proven to be very valuable in identifying key toxic substances in environmental mixtures. For this, it is important to carefully select accurate bioassays from a wide range of tests for EDA when applying it to actual environmental samples. This article reviews studies published from 2014 to 2023 that have applied EDA and summarizes the bioassays and their corresponding biological effects. A total of 127 studies were selected from 591 publications evaluating the toxic effects of environmental samples, including wastewater, surface water, and sediments. Here, bioassays used in EDA are summarized, including the assays that measure specific receptor-mediated modes of action (MOA), induction of xenobiotic metabolism pathways, and induction of adaptive stress response pathways using either <em>in vitro</em> or <em>in vivo</em> bioassays. Also, the identified substances using EDA are discussed based on their MOA. The importance of EDA in establishing a comprehensive approach for the detection of environmental contaminants using bioanalytical methods is emphasized. The current limitations and benefits of using EDA in practical applications are outlined and strategies for moving forward are proposed.</div></div>","PeriodicalId":15788,"journal":{"name":"Journal of Environmental Sciences-china","volume":"155 ","pages":"Pages 343-358"},"PeriodicalIF":5.9,"publicationDate":"2024-08-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143350318","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Enhancing sensitivity, selectivity, and intelligence of gas detection based on field-effect transistors: Principle, process, and materials

IF 5.9 2区环境科学与生态学

Journal of Environmental Sciences-china Pub Date : 2024-08-06 DOI: 10.1016/j.jes.2024.07.027

Rabia Sultana , Song Wang , Misbah Sehar Abbasi , Kamran Ahmad Shah , Muhammad Mubeen , Luxi Yang , Qiyu Zhang , Zepeng Li , Yinghui Han

{"title":"Enhancing sensitivity, selectivity, and intelligence of gas detection based on field-effect transistors: Principle, process, and materials","authors":"Rabia Sultana , Song Wang , Misbah Sehar Abbasi , Kamran Ahmad Shah , Muhammad Mubeen , Luxi Yang , Qiyu Zhang , Zepeng Li , Yinghui Han","doi":"10.1016/j.jes.2024.07.027","DOIUrl":"10.1016/j.jes.2024.07.027","url":null,"abstract":"<div><div>A sensor, serving as a transducer, produces a quantifiable output in response to a predetermined input stimulus, which may be of a chemical or physical nature. The field of gas detection has experienced a substantial surge in research activity, attributable to the diverse functionalities and enhanced accessibility of advanced active materials. In this work, recent advances in gas sensors, specifically those utilizing Field Effect Transistors (FETs), are summarized, including device configurations, response characteristics, sensor materials, and application domains. In pursuing high-performance artificial olfactory systems, the evolution of FET gas sensors necessitates their synchronization with material advancements. These materials should have large surface areas to enhance gas adsorption, efficient conversion of gas input to detectable signals, and strong mechanical qualities. The exploration of gas-sensitive materials has covered diverse categories, such as organic semiconductor polymers, conductive organic compounds and polymers, metal oxides, metal-organic frameworks, and low-dimensional materials. The application of gas sensing technology holds significant promise in domains such as industrial safety, environmental monitoring, and medical diagnostics. This comprehensive review thoroughly examines recent progress, identifies prevailing technical challenges, and outlines prospects for gas detection technology utilizing field effect transistors. The primary aim is to provide a valuable reference for driving the development of the next generation of gas-sensitive monitoring and detection systems characterized by improved sensitivity, selectivity, and intelligence.</div></div>","PeriodicalId":15788,"journal":{"name":"Journal of Environmental Sciences-china","volume":"154 ","pages":"Pages 174-199"},"PeriodicalIF":5.9,"publicationDate":"2024-08-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143151412","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Metals link to diabetes: Insights from a national cross‐sectional investigation

IF 5.9 2区环境科学与生态学

Journal of Environmental Sciences-china Pub Date : 2024-08-05 DOI: 10.1016/j.jes.2024.07.030

Yang Zhou , Long Zhang , Tong Zheng , Hongyan Li , Yajing Han , Wenjie Meng , Hongxuan Kuang , Chenyin Dong , Zi ling Yu , Xiaohui Zhu , Guocheng Hu , Guang-Hui Dong , Yunjiang Yu

{"title":"Metals link to diabetes: Insights from a national cross‐sectional investigation","authors":"Yang Zhou , Long Zhang , Tong Zheng , Hongyan Li , Yajing Han , Wenjie Meng , Hongxuan Kuang , Chenyin Dong , Zi ling Yu , Xiaohui Zhu , Guocheng Hu , Guang-Hui Dong , Yunjiang Yu","doi":"10.1016/j.jes.2024.07.030","DOIUrl":"10.1016/j.jes.2024.07.030","url":null,"abstract":"<div><div>Diabetes and impaired fasting glucose (IFG) are significant global health concerns. However, the potential effects of mixed heavy metal exposure on these conditions remain underexplored. This study aims to investigate the combined effects of multiple metals on diabetes risk and explore the mediating role of Body Mass Index (BMI) in rural China. A cross-sectional analysis involved 2313 adults from 12 provinces in rural China. Urinary levels of zinc (Zn), chromium (Cr), nickel (Ni), cadmium (Cd), and lead (Pb) were quantified using inductively coupled plasma mass spectrometry. Fasting blood glucose (FBG) levels were measured with an automatic biochemical analyzer. Logistic regression models and the Bayesian Kernel Machine Regression (BKMR) model were used to examine associations and interactions. Mediation analysis was performed to assess the role of BMI. The results of our study indicate that there is a significant association between urinary Zn (OR = 2.38, 95 % CI: 1.57, 3.60), Cr (OR = 1.24, 95 % CI: 1.31, 1.61), and Ni (OR = 1.51, 95 % CI: 1.05, 2.18) and the diabetes risk. The study revealed that exposure to Ni amplified the associations between Zn, Cr and diabetes/IFG risk. Additionally, BMI was identified as a significant mediator in the relationship between metal exposure, particularly Cr/Cd, and diabetes risk. These findings reveal a complex link between multiple metals, such as Zn, Cr, and Ni, and diabetes risk, and emphasize the potential opposite mediating effects of BMI in different metal-induced diabetes mechanisms. Further investigation of these mechanisms is warranted.</div></div>","PeriodicalId":15788,"journal":{"name":"Journal of Environmental Sciences-china","volume":"155 ","pages":"Pages 720-729"},"PeriodicalIF":5.9,"publicationDate":"2024-08-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143512165","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Evolution of global O3-NOx-VOCs sensitivity before and after the COVID-19 from the ratio of formaldehyde to NO2 from satellite observations

IF 5.9 2区环境科学与生态学

Journal of Environmental Sciences-china Pub Date : 2024-08-05 DOI: 10.1016/j.jes.2024.07.029

Dakang Wang , Dongchuan Pu , Isabelle De Smedt , Lei Zhu , Xiankun Yang , Wenfu Sun , Hui Xia , Zhaolong Song , Xicheng Li , Juan Li , Aoxing Zhang , Xu Feng , Yuyang Chen , Xin Yang , Tzung-May Fu , Jinnian Wang

{"title":"Evolution of global O3-NOx-VOCs sensitivity before and after the COVID-19 from the ratio of formaldehyde to NO2 from satellite observations","authors":"Dakang Wang , Dongchuan Pu , Isabelle De Smedt , Lei Zhu , Xiankun Yang , Wenfu Sun , Hui Xia , Zhaolong Song , Xicheng Li , Juan Li , Aoxing Zhang , Xu Feng , Yuyang Chen , Xin Yang , Tzung-May Fu , Jinnian Wang","doi":"10.1016/j.jes.2024.07.029","DOIUrl":"10.1016/j.jes.2024.07.029","url":null,"abstract":"<div><div>Ozone production sensitivity is widely used to reveal the chemical dominant precursors of urban ozone rise. Here, we diagnose the impact of the decline in global human production activities level caused by the COVID-19 on ozone sensitivity through the ratio of formaldehyde (HCHO) and NO<sub>2</sub> (FNR = HCHO/NO<sub>2</sub>) observations from the TROPOspheric Monitoring Instrument. We use a relative uncertainty threshold to clean the satellite FNR, and our satellite FNR present a good correlation (<em>R</em> = 0.6248) with U.S. Environmental Protection Agency observations. We found that the outbreak of the COVID-19 did not change the pattern of global ozone sensitivity, while the global regimes was transforming or strengthening to VOC-limited regimes due to the significant decline of human production activities levels. During the COVID-19, ozone sensitivity in Eastern China and East Africa continued to shift to VOC-limited regimes, while India, Western Europe and North America first moved to NO<sub>x</sub>-limited regimes, and then changed to VOC-limited regimes with the resumption of production and the increase in travel. The clustering results tell that urban ozone sensitivity tends to shift towards NO<sub>x</sub>-limited regimes as economic growing. The ozone formation in cities with lower FNR and per capita gross domestic product (GDP) are more sensitive to changes in VOCs, while cities with higher FNR and per capita GDP are more sensitive to variations in NO<sub>x</sub>. Cities with intermediate FNR and GDP are good evidence of the existence of transitional regimes. Our study identifies the driving role of urban economics in orienting the evolution of ozone sensitivity regimes.</div></div>","PeriodicalId":15788,"journal":{"name":"Journal of Environmental Sciences-china","volume":"156 ","pages":"Pages 102-113"},"PeriodicalIF":5.9,"publicationDate":"2024-08-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143562564","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

FeCN/MXene as novel heterogeneous electro-Fenton catalysts for the degradation of sulfathiazole: Performance and mechanism investigation

IF 5.9 2区环境科学与生态学

Journal of Environmental Sciences-china Pub Date : 2024-08-04 DOI: 10.1016/j.jes.2024.07.024

Huilai Liu, Zhihao Li, Defeng Kong, Xing Chen

{"title":"FeCN/MXene as novel heterogeneous electro-Fenton catalysts for the degradation of sulfathiazole: Performance and mechanism investigation","authors":"Huilai Liu, Zhihao Li, Defeng Kong, Xing Chen","doi":"10.1016/j.jes.2024.07.024","DOIUrl":"10.1016/j.jes.2024.07.024","url":null,"abstract":"<div><div>The present study aims to fabricate heterogeneous electro-Fenton (HEF) cathode catalysts for the in-situ generation of H<sub>2</sub>O<sub>2</sub> and the degradation of organic pollutants in water. To achieve this, preparation of Fe and N co-doped MXene composites (FeCN/MXene-<em>x</em>, where <em>x</em> represents the loading content of FeCN) and construction of the HEF system for the degradation of sulfathiazole (STZ) were carried out. The characterization results showed that Fe, C and N mainly existed in the form of Fe<sub>3</sub>C and Fe<sub>3</sub>N in the FeCN/MXene catalysts, which were favorable for promoting the ORR reaction in the HEF system. Among them, FeCN/MXene-2 exhibited the highest redox electron transfer rate and H<sub>2</sub>O<sub>2</sub> selectivity (86%). The catalytic oxidation mechanism of the FeCN/MXene-2/HEF system was investigated by free radical quenching, electron paramagnetic resonance and frontier orbital theory studies. These studies demonstrated that the main active substances for the degradation of STZ were ·OH and <sup>1</sup>O<sub>2</sub>. In addition, the excellent stability and practical performance of the prepared cathodic catalysts were demonstrated by cycling experiments and real water sample tests.</div></div>","PeriodicalId":15788,"journal":{"name":"Journal of Environmental Sciences-china","volume":"154 ","pages":"Pages 300-313"},"PeriodicalIF":5.9,"publicationDate":"2024-08-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143151566","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0