Journal of environmental sciences最新文献_第5页

Enhanced photocatalytic performance of Bi2O2CO3/Bi4O5Br2/reduced graphene oxide Z-schemehe terojunction via a one-pot room-temperature synthesis 室温一锅法合成Bi2O2CO3/Bi4O5Br2/还原氧化石墨烯z -scheme三元结提高光催化性能

IF 6.9

Journal of environmental sciences Pub Date : 2024-04-01 Epub Date: 2023-03-28 DOI: 10.1016/j.jes.2023.03.025

Xiaoge Wu , Lei Yan , Rongrong Qin , Qikai Zhang , Wei Yang , Xiaozhi Wang , Yongcai Zhang , Min Luo , Jianhua Hou

{"title":"Enhanced photocatalytic performance of Bi2O2CO3/Bi4O5Br2/reduced graphene oxide Z-schemehe terojunction via a one-pot room-temperature synthesis","authors":"Xiaoge Wu , Lei Yan , Rongrong Qin , Qikai Zhang , Wei Yang , Xiaozhi Wang , Yongcai Zhang , Min Luo , Jianhua Hou","doi":"10.1016/j.jes.2023.03.025","DOIUrl":"https://doi.org/10.1016/j.jes.2023.03.025","url":null,"abstract":"<div>Bi2O2CO3(BOC)/Bi4O5Br2(BOB)/reduced graphene oxide (rGO) Z-scheme heterojunction with promising photocatalytic properties was synthesized via a facile one-pot room-temperature method. Ultra-thin nanosheets of BOC and BOB were grown in situ on rGO. The formed 2D/2D direct Z-scheme heterojunction of BOC/BOB with oxygen vacancies (OVs) effectively leads to lower negative electron reduction potential of BOB as well as higher positive hole oxidation potential of BOC, showing improved reduction/oxidation ability. Particularly, rGO is an acceptor of the electrons from the conduction band of BOC. Its dual roles significantly improve the transfer performance of photo-induced charge carriers and accelerate their separation. With layered nanosheet structure, rich OVs, high specific surface area, and increased utilization efficiency of visible light, the multiple synergistic effects of BOC/BOB/rGO can achieve effective generation and separation of the electron-holes, thereby generating more •O2− and h+. The photocatalytic reduction efficiency of CO2 to CO (12.91 µmol/(g*hr)) is three times higher than that of BOC (4.18 µmol/(g*hr)). Moreover, it also achieved almost 100% removal of Rhodamine B and cyanobacterial cells within 2 hours.</div>","PeriodicalId":15774,"journal":{"name":"Journal of environmental sciences","volume":"138 ","pages":"Pages 418-427"},"PeriodicalIF":6.9,"publicationDate":"2024-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49741370","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 4

Photo-thermal synergistic excitation: Feasible strategy to detect ethanol for wide bandgap ZIF-8 at low work temperature 光热协同激发：在低工作温度下检测宽带隙ZIF-8乙醇的可行策略

IF 6.9

Journal of environmental sciences Pub Date : 2024-04-01 Epub Date: 2023-03-10 DOI: 10.1016/j.jes.2023.02.056

Shuhao Shi , Qian Du , Ming Hou , Xiaolei Ye , Li Yang , Shenghui Guo , Jianhong Yi , Ullah Ehsan , Hongbo Zeng

{"title":"Photo-thermal synergistic excitation: Feasible strategy to detect ethanol for wide bandgap ZIF-8 at low work temperature","authors":"Shuhao Shi , Qian Du , Ming Hou , Xiaolei Ye , Li Yang , Shenghui Guo , Jianhong Yi , Ullah Ehsan , Hongbo Zeng","doi":"10.1016/j.jes.2023.02.056","DOIUrl":"https://doi.org/10.1016/j.jes.2023.02.056","url":null,"abstract":"<div>Zeolitic Imidazolate Framework-8 (ZIF-8) material was prepared by chemical precipitation method. The microstructure and physical properties of the as-prepared samples were characterized by XRD, BET, FESEM and UV spectrophotometer. The self-made four-channel measurement device was used to test the gas sensitivity of ZIF-8 material toward ethanol gas under photo-thermal synergistic excitation. The results showed that the sample was typical ZIF-8 (Eg = 4.96 eV) with a regular dodecahedron shape and the specific surface is up to 1793 m2/g. The as-prepared ZIF-8 has a gas response value of 55.04 to 100 ppm ethanol at 75 °C and it shows good gas sensing selectivity and repeated stability. The excellent gas sensitivity can be attributed to the increase of free electron concentration in the ZIF-8 conduction band by photo-thermal synergistic excitation, and the large specific surface area of ZIF-8 material provides more active sites for gas-solid surface reaction. The reaction mechanism of ZIF-8 material under multi-field excitation was also discussed.</div>","PeriodicalId":15774,"journal":{"name":"Journal of environmental sciences","volume":"138 ","pages":"Pages 112-120"},"PeriodicalIF":6.9,"publicationDate":"2024-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49763327","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Unveiling the mechanisms of Fe(III)-loaded chitosan composite (CTS-Fe) in enhancing anaerobic digestion of waste activated sludge 揭示了负载铁(III)壳聚糖复合材料(CTS-Fe)促进废活性污泥厌氧消化的机理

IF 6.9

Journal of environmental sciences Pub Date : 2024-04-01 Epub Date: 2023-04-10 DOI: 10.1016/j.jes.2023.04.001

Boaiqi Zhang , Ziwen Zhao , Rui Ma , Nan Chen , Zhe Kong , Zhongfang Lei , Zhenya Zhang

{"title":"Unveiling the mechanisms of Fe(III)-loaded chitosan composite (CTS-Fe) in enhancing anaerobic digestion of waste activated sludge","authors":"Boaiqi Zhang , Ziwen Zhao , Rui Ma , Nan Chen , Zhe Kong , Zhongfang Lei , Zhenya Zhang","doi":"10.1016/j.jes.2023.04.001","DOIUrl":"https://doi.org/10.1016/j.jes.2023.04.001","url":null,"abstract":"<div>Anaerobic digestion (AD) of waste activated sludge (WAS) is usually limited by the low generation efficiency of methane. Fe(III)-loaded chitosan composite (CTS-Fe) have been reported to effectively enhanced the digestion of WAS, but its role in promoting anaerobic sludge digestion remains unclear. In present study, the effects of CTS-Fe on the hydrolysis and methanogenesis stages of WAS anaerobic digestion were investigated. The addition of CTS-Fe increased methane production potential by 8%–23% under the tested conditions with the addition of 5–20 g/L CTS-Fe. Besides, the results demonstrate that the addition of CTS-Fe could effectively promote the hydrolysis of WAS, evidenced by lower protein or polysaccharides concentration, higher soluble organic carbon in rector adding CTS-Fe, as well as the increased activity of extracellular hydrolase with higher CTS-Fe concentration. Meanwhile, the enrichment of Clostridia abundance (iron-reducing bacteria (IRBs)) was observed in CTS-Fe adding reactor (8.9%–13.8%), which was higher than that in the control reactor (7.9%). The observation further suggesting the acceleration of hydrolysis through dissimilatory iron reduction (DIR) process, thus providing abundant substrates for methanogenesis. However, the presence of CTS-Fe was inhibited the acetoclastic and hydrogenotrophic methanogenesis process, which could be ascribed to the Fe(III) act as electron acceptor coupled to methane for anaerobic oxidation. Furthermore, coenzyme F420 activity in the CTS-Fe added reactor was 34.9% lower than in the blank, also abundance of microorganisms involved in hydrogenotrophic methanogenesis was decreased. Results from this study could provide theoretical support for the practical applications of CTS-Fe.</div>","PeriodicalId":15774,"journal":{"name":"Journal of environmental sciences","volume":"138 ","pages":"Pages 200-211"},"PeriodicalIF":6.9,"publicationDate":"2024-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49741352","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 2

Research on ozone formation sensitivity based on observational methods: Development history, methodology, and application and prospects in China 基于观测方法的臭氧形成敏感性研究:发展历史、方法、在中国的应用与展望

IF 6.9

Journal of environmental sciences Pub Date : 2024-04-01 Epub Date: 2023-03-07 DOI: 10.1016/j.jes.2023.02.052

Wanghui Chu , Hong Li , Yuanyuan Ji , Xin Zhang , Likun Xue , Jian Gao , Cong An

{"title":"Research on ozone formation sensitivity based on observational methods: Development history, methodology, and application and prospects in China","authors":"Wanghui Chu , Hong Li , Yuanyuan Ji , Xin Zhang , Likun Xue , Jian Gao , Cong An","doi":"10.1016/j.jes.2023.02.052","DOIUrl":"https://doi.org/10.1016/j.jes.2023.02.052","url":null,"abstract":"<div>Observation-based method for O3 formation sensitivity research is an important tool to analyze the causes of ground-level O3 pollution, which has broad application potentials in determining the O3 pollution formation mechanism and developing prevention and control strategies. This paper outlined the development history of research on O3 formation sensitivity based on observational methods, described the principle and applicability of the methodology, summarized the relative application results in China and provided recommendations on the prevention and control of O3 pollution in China based on relevant study results, and finally pointed out the shortcomings and future development prospects in this field in China. The overview study showed that the O3 formation sensitivity in some urban areas in China in recent years presented a gradual shifting tendency from the VOC-limited regime to the transition regime or the NOx-limited regime due to the implementation of the O3 precursors emission reduction policies; O3 pollution control strategies and precursor control countermeasures should be formulated based on local conditions and the dynamic control capability of O3 pollution control measures should be improved. There are still some current deficiencies in the study field in China. Therefore, it is recommended that a stereoscopic monitoring network for atmospheric photochemical components should be further constructed and improved; the atmospheric chemical mechanisms should be vigorously developed, and standardized methods for determining the O3 formation sensitivity should be established in China in the near future.</div>","PeriodicalId":15774,"journal":{"name":"Journal of environmental sciences","volume":"138 ","pages":"Pages 543-560"},"PeriodicalIF":6.9,"publicationDate":"2024-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49741464","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Characteristics and sources of peroxyacetyl nitrate (PAN) in the rural North China Plain: Results from 1-year continuous observations 华北平原农村地区过氧乙酰硝酸盐(PAN)特征及来源:1年连续观测结果

IF 6.9

Journal of environmental sciences Pub Date : 2024-04-01 Epub Date: 2023-05-10 DOI: 10.1016/j.jes.2023.04.034

Xin Liu , Xiaowei He , Chenglong Zhang , Yifei Song , Shuyang Xie , Chengtang Liu , Pengfei Liu , Yuanyuan Zhang , Yujing Mu , Junfeng Liu

{"title":"Characteristics and sources of peroxyacetyl nitrate (PAN) in the rural North China Plain: Results from 1-year continuous observations","authors":"Xin Liu , Xiaowei He , Chenglong Zhang , Yifei Song , Shuyang Xie , Chengtang Liu , Pengfei Liu , Yuanyuan Zhang , Yujing Mu , Junfeng Liu","doi":"10.1016/j.jes.2023.04.034","DOIUrl":"https://doi.org/10.1016/j.jes.2023.04.034","url":null,"abstract":"<div>Peroxyacetyl nitrate (PAN) is an important photochemical pollutant in the troposphere, whereas long-term measurements are scarce in rural areas in North China Plain (NCP), resulting in unclear seasonal variations and sources of PAN in rural NCP. In this study, we conducted a 1-year observation of PAN during 2021-2022 at the rural NCP site. The average concentrations of PAN were 1.10, 0.75, 0.65, and 0.88 ppbv in spring, summer, autumn, and winter, respectively, with a 1-year average of 0.81 ± 0.60 ppbv. Calculations indicate that the loss of PAN through thermal decomposition in summer accounts for 43.2% of the total formed PAN, which is an important reason for the low concentration of PAN in summer. We speculate that since the correlation between PAN and O3 in winter is significantly lower than that in other seasons, the observed regional transport of PAN cannot be ignored in winter. Through budget analysis, regional transport accounted for 12.8% and 55.9% of the observed PAN on the spring and winter pollution days, respectively, which showed that regional transport played key roles during the photochemical pollution of the rural NCP in winter. The potential source contribution function revealed that the transported PAN mainly comes from southern Hebei in spring. In winter, the transported PAN was mainly from Langfang, Hengshui, and southern Beijing. Our findings may aid in understanding PAN variations in different seasons in rural areas and highlight the impact of regional transport on the PAN budget.</div>","PeriodicalId":15774,"journal":{"name":"Journal of environmental sciences","volume":"138 ","pages":"Pages 719-731"},"PeriodicalIF":6.9,"publicationDate":"2024-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49741642","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Water-soluble brown carbon in atmospheric aerosols from the resource-dependent cities: Optical properties, chemical compositions and sources 资源依赖型城市大气气溶胶中的水溶性棕色碳:光学性质、化学成分和来源

IF 6.9

Journal of environmental sciences Pub Date : 2024-04-01 Epub Date: 2023-03-05 DOI: 10.1016/j.jes.2023.02.035

Haoji Wang , Yue Su , Yangzheng Liu , Fei Xie , Xingjun Zhou , Ruihong Yu , Changwei Lü , Jiang He

{"title":"Water-soluble brown carbon in atmospheric aerosols from the resource-dependent cities: Optical properties, chemical compositions and sources","authors":"Haoji Wang , Yue Su , Yangzheng Liu , Fei Xie , Xingjun Zhou , Ruihong Yu , Changwei Lü , Jiang He","doi":"10.1016/j.jes.2023.02.035","DOIUrl":"https://doi.org/10.1016/j.jes.2023.02.035","url":null,"abstract":"<div>As a vital type of light-absorbing aerosol, brown carbon (BrC) presents inherent associations with atmospheric photochemistry and climate change. However, the understanding of the chemical and optical properties of BrC is limited, especially in some resource-dependent cities with long heating periods in northwest China. This study showed that the annual average abundances of Water-soluble BrC (WS-BrC) were 9.33±7.42 and 8.69±6.29 µg/m3 in Baotou and Wuhai and the concentrations, absorption coefficient (Abs365), and mass absorption efficiency (MAE365) of WS-BrC presented significant seasonal patterns, with high values in the heating season and low values in the non-heating season; while showing opposite seasonal trends for the Absorption Ångström exponent (AAE300-400). Comparatively, the levels of WS-BrC in developing regions (such as cities in Asia) were higher than those in developed regions (such as cities in Europe and Australia), indicating the significant differences in energy consumption in these regions. By combining fluorescence excitation-emission matrix (EEM) spectra with the parallel factor (PARAFAC) model, humic-like (C1 and C2) and protein-like (C3) substances were identified, and accounted for 61.40%±4.66% and 38.6%±3.78% at Baotou, and 60.33%±6.29% and 39.67%±4.17% at Wuhai, respectively. The results of source apportionment suggested that the potential source regions of WS-BrC varied in heating vs. non-heating seasons and that the properties of WS-BrC significantly depended on primary emissions (e.g., combustion emissions) and secondary formation.</div>","PeriodicalId":15774,"journal":{"name":"Journal of environmental sciences","volume":"138 ","pages":"Pages 74-87"},"PeriodicalIF":6.9,"publicationDate":"2024-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49740975","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Role of inflammatory lipid and fatty acid metabolic abnormalities induced by plastic additives exposure in childhood asthma 塑料添加剂暴露引起的炎性脂质和脂肪酸代谢异常在儿童哮喘中的作用

IF 6.9

Journal of environmental sciences Pub Date : 2024-03-01 Epub Date: 2023-02-10 DOI: 10.1016/j.jes.2023.02.005

Zhiyu Chen , Fang Li , Lei Fu , Yu Xia , Ying Luo , Ang Guo , Xiaona Zhu , Huifang Zhong , Qian Luo

{"title":"Role of inflammatory lipid and fatty acid metabolic abnormalities induced by plastic additives exposure in childhood asthma","authors":"Zhiyu Chen , Fang Li , Lei Fu , Yu Xia , Ying Luo , Ang Guo , Xiaona Zhu , Huifang Zhong , Qian Luo","doi":"10.1016/j.jes.2023.02.005","DOIUrl":"https://doi.org/10.1016/j.jes.2023.02.005","url":null,"abstract":"<div>Lipid metabolism play an essential role in occurrence and development of asthma, and it can be disturbed by phthalate esters (PAEs) and organophosphate flame retardants (OPFRs). As a chronic inflammatory respiratory disease, the occurrence risk of childhood asthma is increased by PAEs and OPFRs exposure, but it remains not entirely clear how PAEs and OPFRs contribute the onset and progress of the disease. We have profiled the serum levels of PAEs and OPFRs congeners by liquid chromatography coupled with mass spectrometry, and its relationships with the dysregulation of lipid metabolism in asthmatic, bronchitic (acute inflammation) and healthy (non-inflammation) children. Eight PAEs and nine OPFRs congeners were found in the serum of children (1 – 5 years old) from Shenzhen, and their total median levels were 615.16 ng/mL and 17.06 ng/mL, respectively. Moreover, the serum levels of mono-methyl phthalate (MMP), tri-propyl phosphate (TPP) and tri-n-butyl phosphate (TNBP) were significant higher in asthmatic children than in healthy and bronchitic children as control. Thirty-one characteristic lipids and fatty acids of asthma were screened by machine-learning random forest model based on serum lipidome data, and the alterations of inflammatory characteristic lipids and fatty acids including palmitic acids, 12,13-DiHODE, 14,21-DiHDHA, prostaglandin D2 and LysoPA(18:2) showed significant correlated with high serum levels of MMP, TPP and TNBP. These results imply PAEs and OPFRs promote the occurrence of childhood asthma via disrupting inflammatory lipid and fatty acid metabolism, and provide a novel sight for better understanding the effects of plastic additives on childhood asthma.</div>","PeriodicalId":15774,"journal":{"name":"Journal of environmental sciences","volume":"137 ","pages":"Pages 172-180"},"PeriodicalIF":6.9,"publicationDate":"2024-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49745235","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Prenatal amoxicillin exposure induces developmental toxicity in fetal mice and its characteristics 产前阿莫西林暴露诱导胎鼠发育毒性及其特征

IF 6.9

Journal of environmental sciences Pub Date : 2024-03-01 Epub Date: 2023-02-22 DOI: 10.1016/j.jes.2023.02.021

Yongguo Dai , Yu Peng , Wen Hu , Yi Liu , Hui Wang

{"title":"Prenatal amoxicillin exposure induces developmental toxicity in fetal mice and its characteristics","authors":"Yongguo Dai , Yu Peng , Wen Hu , Yi Liu , Hui Wang","doi":"10.1016/j.jes.2023.02.021","DOIUrl":"https://doi.org/10.1016/j.jes.2023.02.021","url":null,"abstract":"<div>Amoxicillin, a widely used antibiotic in human and veterinary pharmaceuticals, is now considered as an “emerging contaminant” because it exists widespreadly in the environment and brings a series of adverse outcomes. Currently, systematic studies about the developmental toxicity of amoxicillin are still lacking. We explored the potential effects of amoxicillin exposure on pregnancy outcomes, maternal/fetal serum phenotypes, and fetal multiple organ development in mice, at different doses (75, 150, 300 mg/(kg·day)) during late-pregnancy, or at a dose of 300 mg/(kg·day) during different stages (mid-/late-pregnancy) and courses (single-/multi-course). Results showed that prenatal amoxicillin exposure (PAmE) had no significant influence on the body weights of dams, but it could inhibit the physical development and reduce the survival rate of fetuses, especially during the mid-pregnancy. Meanwhile, PAmE altered multiple maternal/fetal serum phenotypes, especially in fetuses. Fetal multi-organ function results showed that PAmE inhibited testicular/adrenal steroid synthesis, long bone/cartilage and hippocampal development, and enhanced ovarian steroid synthesis and hepatic glycogenesis/lipogenesis, and the order of severity might be gonad (testis, ovary) > liver > others. Further analysis found that PAmE-induced multi-organ developmental and functional alterations had differences in stages, courses and fetal gender, and the most obvious changes might be in high-dose, late-pregnancy and multi-course, but there was no typical rule of a dose-response relationship. In conclusion, this study confirmed that PAmE could cause abnormal development and multi-organ function alterations, which deepens our understanding of the risk of PAmE and provides an experimental basis for further exploration of the long-term harm.</div>","PeriodicalId":15774,"journal":{"name":"Journal of environmental sciences","volume":"137 ","pages":"Pages 287-301"},"PeriodicalIF":6.9,"publicationDate":"2024-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49745117","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Visible light-driven oxidation of non-native substrate by laccase attached on Ru-based metal-organic frameworks 附着在ru基金属有机框架上的漆酶在可见光驱动下氧化非天然底物

IF 6.9

Journal of environmental sciences Pub Date : 2024-03-01 Epub Date: 2023-03-04 DOI: 10.1016/j.jes.2023.02.047

Wenguang Huang , Wentao Zhang , Guantongyi Chen , Yun Chen , Jun Ma , Dawei Huang , Qinzheng Zhao , Bingdang Wu

{"title":"Visible light-driven oxidation of non-native substrate by laccase attached on Ru-based metal-organic frameworks","authors":"Wenguang Huang , Wentao Zhang , Guantongyi Chen , Yun Chen , Jun Ma , Dawei Huang , Qinzheng Zhao , Bingdang Wu","doi":"10.1016/j.jes.2023.02.047","DOIUrl":"https://doi.org/10.1016/j.jes.2023.02.047","url":null,"abstract":"<div>Light-induced electron transfer can broaden the substrate range of metalloenzyme. However, the efficiency of photo-enzyme coupling is limited by the poor combination of photosensitizer or photocatalyst with enzyme. Herein, we prepared the nano-photocatalyst MIL-125-NH2@Ru(bpy) by in site embedding ruthenium pyridine-diimine complex [Ru(bpy)3]2+ into metal organic frameworks MIL-125-NH2 and associated it with multicopper oxidase (MCO) laccase. Compared to [Ru(bpy)3]2+, the coupling efficiency of MIL-125-NH2@Ru(bpy)3 for enzymatic oxygen reduction increased by 35.7%. A series of characterizations confirmed that the amino group of laccase formed chemical bonds with the surface defects or hydrophobic groups of MIL-125-NH2@Ru(bpy)3. Consequently, the tight binding accelerated the quenching process and electron transfer between laccase and the immobilized ruthenium pyridine-diimine complex. This work would open an avenue for the synthesis of MOFs photocatalyst towards photo-enzyme coupling.</div>","PeriodicalId":15774,"journal":{"name":"Journal of environmental sciences","volume":"137 ","pages":"Pages 741-753"},"PeriodicalIF":6.9,"publicationDate":"2024-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49767077","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 2

Selective immobilization of Pb(II) by biogenic whewellite and its mechanism 生物风团石对Pb（II）的选择性固定化及其机理

IF 6.9

Journal of environmental sciences Pub Date : 2024-03-01 Epub Date: 2023-03-21 DOI: 10.1016/j.jes.2023.03.014

Xingxing Wang, Kaiyan Ren, Kairui Jiao, Wenjun Nie, Xiaochi An, Bin Lian

{"title":"Selective immobilization of Pb(II) by biogenic whewellite and its mechanism","authors":"Xingxing Wang, Kaiyan Ren, Kairui Jiao, Wenjun Nie, Xiaochi An, Bin Lian","doi":"10.1016/j.jes.2023.03.014","DOIUrl":"https://doi.org/10.1016/j.jes.2023.03.014","url":null,"abstract":"<div>The development of bio-adsorbents with highly selective immobilization properties for specific heavy metals is a great challenge, but has important application value. Biogenic whewellite (BW) with high selectivity for Pb(II) was synthesized by mineral microbial transformation. The selective immobilization properties and mechanism of BW for Pb(II) were analyzed by combining mineral characterization technology and batch adsorption research methods. The results indicated that BW can efficiently and selectively immobilize Pb(II) in single or composite heavy metal adsorption solutions, and the immobilized Pb(II) is difficult to desorb. BW undergoes monolayer adsorption on Pb(II), Qmax ≈ 1073.17 mg/g. The immobilization of Pb(II) by BW is a physico-chemical adsorption process with spontaneous heat absorption and an accompanying increase in entropy. In addition, the sequestration of Pb(II) by BW remains around 756.99 mg/g even at pH = 1. The excellent selective immobilization properties of BW for Pb(II) are closely related to its smaller Ksp, electrostatic repulsion effect, organic-inorganic composite structure, acid resistance and the formation of Pb(II) oxalate. This study provides beneficial information about the recycling of lead in acidic lead-containing wastewater and composite heavy metal contaminated water bodies.</div>","PeriodicalId":15774,"journal":{"name":"Journal of environmental sciences","volume":"137 ","pages":"Pages 664-676"},"PeriodicalIF":6.9,"publicationDate":"2024-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49764239","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0