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学者姓名：何秋香
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Abstract ：
Microbial biofilm-based hydrovoltaic electricity generators (BioHEGs) have recently been developed as promising and readily available platforms for green energy harvesting, despite their unsatisfactory output performances and unspecified mechanisms regarding electric current production. Herein, carbon quantum dots (CQDs) were used to construct a nano-biohybrid system with Shewanella oneidensis MR-1 (S. oneidensis), through which the CQDs/S. oneidensis BioHEG achieved a maximum open-circuit voltage of ca. 0.65 V and short-circuit current density of ca. 5.23 mu A & sdot;cm-2. In addition, both the hydrovoltaic effect and electrical conductivity of CQDs/S. oneidensis nano-biohybrids were noticeably improved due to enhanced secretion of extracellular polymeric substances (EPS) and accelerated electron transfer upon CQDs implantation, thereby leading to a nearly 14-fold increase in output power density compared to the bare S. oneidensis cells. Studies aimed to elucidate the underlying mechanism indicated that the hybridization of CQDs and S. oneidensis greatly promoted the metabolic synthesis of outer membrane c-type cytochromes (OM c-Cyts) and the extracellular secretion of riboflavin (RF), which was demonstrated to be decisive in the current producing process of the CQDs/ S. oneidensis BioHEG. This work thus proposes a viable strategy to boost the hydrovoltaic electricity generation capacity of microbial biofilms and provides a new perspective on the mechanism of accelerated electron transfer pathways inside BioHEGs.
Keyword ：
Carbon quantum dots Carbon quantum dots Hydrovoltaic electricity generation Hydrovoltaic electricity generation Metabolic synthesis Metabolic synthesis Shewanella oneidensis Shewanella oneidensis
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| GB/T 7714 | Chen, Ting-Ting , Yan, Zhi-Wu , Cai, Feng-Ying et al. Carbon quantum dots boost microbial biofilm-based hydrovoltaic electricity generation [J]. | WATER RESEARCH , 2026 , 288 . |
| MLA | Chen, Ting-Ting et al. "Carbon quantum dots boost microbial biofilm-based hydrovoltaic electricity generation" . | WATER RESEARCH 288 (2026) . |
| APA | Chen, Ting-Ting , Yan, Zhi-Wu , Cai, Feng-Ying , He, Qiu-Xiang , You, Han-Hui , Rensing, Christopher et al. Carbon quantum dots boost microbial biofilm-based hydrovoltaic electricity generation . | WATER RESEARCH , 2026 , 288 . |
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The Bi2WO6/MIL-101composite photocatalysts were synthesized via a hydrothermal method to facilitate the degradation of tetracycline (TC) under visible light. Research findings demonstrated that the TC degradation efficiency of Bi2WO6 under visible light was significantly enhanced following the dense growth of BWO nanosheets on the surface of MIL-101. Furthermore, the structurally optimized BWO/MIL-101-40exhibited a TC degradation efficiency of 85.9% within 60minutes, with a reaction rate constant approximately 1.4 times that of Bi2WO6 and 3.1times that of MIL-101. Additionally, BWO/MIL-101 displayed consistent and robust photocatalytic performance in neutral and alkaline conditions. Band structure analysis revealed the formation of type II heterojunctions between Bi2WO6 and MIL-101, contributing to effective photoelectron-hole separation. Quenching experiments and electron paramagnetic resonance (EPR) tests indicated superoxide radical (•O2–) and holes (h+) as the primary active species in this particular photocatalytic system. © 2024 Chinese Society for Environmental Sciences. All rights reserved.
Keyword ：
Bioremediation Bioremediation Bismuth compounds Bismuth compounds Catalytic cracking Catalytic cracking Electron spin resonance spectroscopy Electron spin resonance spectroscopy Free radical reactions Free radical reactions Laser beams Laser beams Metal-Organic Frameworks Metal-Organic Frameworks Paramagnetic resonance Paramagnetic resonance Photocatalytic activity Photocatalytic activity Photodegradation Photodegradation Rate constants Rate constants Tungsten compounds Tungsten compounds
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| GB/T 7714 | Cai, Feng-Ying , Xu, Yu-Hang , Long, Hao-Ran et al. Performance and mechanism of photocatalytic tetracycline degradation by Bi2WO6/MIL-101in water. [J]. | China Environmental Science , 2024 , 44 (8) : 4652-4660 . |
| MLA | Cai, Feng-Ying et al. "Performance and mechanism of photocatalytic tetracycline degradation by Bi2WO6/MIL-101in water." . | China Environmental Science 44 . 8 (2024) : 4652-4660 . |
| APA | Cai, Feng-Ying , Xu, Yu-Hang , Long, Hao-Ran , Yuan, Yu-Xin , Zhang, Yu-Qing , He, Qiu-Xiang et al. Performance and mechanism of photocatalytic tetracycline degradation by Bi2WO6/MIL-101in water. . | China Environmental Science , 2024 , 44 (8) , 4652-4660 . |
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Pesticides and its degradation products,being well-known residues in soil,have recently been detected in many water bodies as pollutants of emerging concerns,and thus there is a contemporary demand to develop viable and cost-effective techniques for the removal of related organic pollutants in aqueous phases.Herein,a visible-light-responsive Fenton system was constructed with iron-doped bismuth oxybromides(Fe-BiOBr)as the catalysts.Taking the advantage of sustainable Fe(Ⅲ)/Fe(Ⅱ)conversion and optimized H2O2 utilization,the optimal Fe-BiOBr-2 catalyst showed an excellent atrazine removal efficiency of 97.61％in 120 min,which is superior than the traditional homogeneous Fenton and the majority of heterogeneous processes documented in the literature.In this photo-Fenton system,hy-droxyl(·OH)and superoxide(·O2-)radicals were dominant active species contributed to the oxidative degradation of atrazine.Due to the production of various active radicals,five degra-dation pathways were proposed based on the identification of intermediates and degrada-tion products.Overall,this work not only demonstrates a fundamental insight into creating highly efficient and atom economic photo-Fenton systems,but also provides a complemen-tary strategy for the treatment of organic pollutants in water.
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| GB/T 7714 | Yong-Li Cai , Yu-Hang Xu , Ji-Zun Xiang et al. Iron-doped bismuth oxybromides as visible-light-responsive Fenton catalysts for the degradation of atrazine in aqueous phases [J]. | 环境科学学报（英文版） , 2024 , 137 (3) : 321-332 . |
| MLA | Yong-Li Cai et al. "Iron-doped bismuth oxybromides as visible-light-responsive Fenton catalysts for the degradation of atrazine in aqueous phases" . | 环境科学学报（英文版） 137 . 3 (2024) : 321-332 . |
| APA | Yong-Li Cai , Yu-Hang Xu , Ji-Zun Xiang , Zhi-Qiang Zhang , Qiu-Xiang He , Ya-Feng Li et al. Iron-doped bismuth oxybromides as visible-light-responsive Fenton catalysts for the degradation of atrazine in aqueous phases . | 环境科学学报（英文版） , 2024 , 137 (3) , 321-332 . |
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Abstract ：
Pesticides and its degradation products, being well-known residues in soil, have recently been detected in many water bodies as pollutants of emerging concerns, and thus there is a contemporary demand to develop viable and cost-effective techniques for the removal of related organic pollutants in aqueous phases. Herein, a visible-light -responsive Fenton system was constructed with iron-doped bismuth oxybromides (Fe-BiOBr) as the catalysts. Taking the advantage of sustainable Fe(III)/Fe(II) conversion and optimized H2O2 utilization, the optimal Fe-BiOBr-2 catalyst showed an excellent atrazine removal efficiency of 97.61% in 120 min, which is superior than the traditional homogeneous Fenton and the majority of heterogeneous processes documented in the literature. In this photo-Fenton system, hydroxyl ( center dot OH) and superoxide ( center dot O 2 -) radicals were dominant active species contributed to the oxidative degradation of atrazine. Due to the production of various active radicals, five degradation pathways were proposed based on the identification of intermediates and degradation products. Overall, this work not only demonstrates a fundamental insight into creating highly efficient and atom economic photo-Fenton systems, but also provides a complementary strategy for the treatment of organic pollutants in water.(c) 2023 The Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences. Published by Elsevier B.V.
Keyword ：
Atrazine Atrazine Bismuth oxybromide Bismuth oxybromide Catalytic degradation Catalytic degradation Photo-Fenton Photo-Fenton
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| GB/T 7714 | Cai, Yong-Li , Xu, Yu-Hang , Xiang, Ji-Zun et al. Iron-doped bismuth oxybromides as visible -light -responsive Fenton catalysts for the degradation of atrazine in aqueous phases [J]. | JOURNAL OF ENVIRONMENTAL SCIENCES , 2024 , 137 : 321-332 . |
| MLA | Cai, Yong-Li et al. "Iron-doped bismuth oxybromides as visible -light -responsive Fenton catalysts for the degradation of atrazine in aqueous phases" . | JOURNAL OF ENVIRONMENTAL SCIENCES 137 (2024) : 321-332 . |
| APA | Cai, Yong-Li , Xu, Yu-Hang , Xiang, Ji-Zun , Zhang, Zhi-Qiang , He, Qiu-Xiang , Li, Ya-Feng et al. Iron-doped bismuth oxybromides as visible -light -responsive Fenton catalysts for the degradation of atrazine in aqueous phases . | JOURNAL OF ENVIRONMENTAL SCIENCES , 2024 , 137 , 321-332 . |
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Abstract ：
利用水热法制备Bi
Keyword ：
光催化 光催化 四环素 四环素 异质结 异质结 金属有机框架 金属有机框架 钨酸铋 钨酸铋
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| GB/T 7714 | 蔡奉颖 , 许煜航 , 龙浩然 et al. Bi [J]. | 中国环境科学 , 2024 , 44 (08) : 4652-4660 . |
| MLA | 蔡奉颖 et al. "Bi" . | 中国环境科学 44 . 08 (2024) : 4652-4660 . |
| APA | 蔡奉颖 , 许煜航 , 龙浩然 , 袁语馨 , 张宇晴 , 何秋香 et al. Bi . | 中国环境科学 , 2024 , 44 (08) , 4652-4660 . |
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Abstract ：
采用溶剂热反应制备了分级微球结构的铁掺杂氯氧化铋（Fe-BiOCl），并用于光芬顿降解阿特拉津（Atrazine,ATZ）.结合多因素实验，系统地分析了以Fe-BiOCl为催化剂构建的光芬顿体系氧化降解阿特拉津的性能与机理.结果表明，当催化剂用量为0.2 g·L~(-1)、污染物浓度为20 mg·L~(-1)、H_2O_2浓度为6.4 mmol·L~(-1)时，Fe-BiOCl-2催化剂在120 min内降解阿特拉津的效率约为99.98%，且在较宽pH范围（3.04～6.02）内保持优异的降解效率.通过自由基猝灭实验和电子顺磁共振（EPR）测试发现，在光芬顿体系中羟基自由基（·OH）和超氧自由基（·O_2~-）是反应的主要活性物种.此外，通过超高效液相色谱测定降解过程中的中间产物，提出了可能的降解路径和转化机理.
Keyword ：
光芬顿 光芬顿 氯氧化铋 氯氧化铋 离子掺杂 离子掺杂 阿特拉津 阿特拉津 降解 降解
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| GB/T 7714 | 许煜航 , 蔡泳莉 , 张志强 et al. 铁掺杂氯氧化铋光芬顿催化降解水中阿特拉津的性能与机理研究 [J]. | 环境科学学报 , 2023 , 43 (08) : 37-48 . |
| MLA | 许煜航 et al. "铁掺杂氯氧化铋光芬顿催化降解水中阿特拉津的性能与机理研究" . | 环境科学学报 43 . 08 (2023) : 37-48 . |
| APA | 许煜航 , 蔡泳莉 , 张志强 , 何秋香 , 陈志 , 吕健 . 铁掺杂氯氧化铋光芬顿催化降解水中阿特拉津的性能与机理研究 . | 环境科学学报 , 2023 , 43 (08) , 37-48 . |
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The heterogeneous photo-Fenton method is a promising technology for wastewater treatment based on the development of efficient catalysts through which the inefficient Fe(III)/Fe(II) cycles and low utilization of H2O2 are optimized. In this work, viable heterogeneous photo-Fenton catalysts (NCS) are synthesized by in situ compounding nitrogen-doped carbon quantum dots (N-CQDs) with schwertmannite (SCH). Specifically, the NCS catalysts exhibit greatly enhanced capacity for chlortetracycline (CTC) degradation, in comparison with those of the pristine SCH and N-CQDs, with a remarkable efficiency of 95.12% at a wide pH range (3.0-7.0). In particular, this allows an efficient Fe(III)/Fe(II) conversion due to the fast electron transport capability provided by N-CQDs, coupled to an excellent structural stability of the catalysts. Main active species including center dot OH, center dot O2- and 1O2 are identified in the degradation process, and a possible degradation mechanism is tentatively proposed. In addition, related cytotoxicity of CTC degradation intermediates is verified via co-culturing with E. coli. This study provides a new strategy to overcome the disadvantages of photo-Fenton processes and develop new technologies for advanced water treatment.
Keyword ：
Carbon quantum dot Carbon quantum dot Catalytic degradation Catalytic degradation Chlortetracycline Chlortetracycline Photo-Fenton Photo-Fenton Schwertmannite Schwertmannite
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| GB/T 7714 | Xu, Yu-Hang , Liu, Xiang-Ji , Xiang, Ji-Zun et al. Nitrogen-doped-CQDs/schwertmannites as visible-light-responsive Fenton catalysts for the degradation of chlortetracycline and related cytotoxicity [J]. | JOURNAL OF CLEANER PRODUCTION , 2023 , 391 . |
| MLA | Xu, Yu-Hang et al. "Nitrogen-doped-CQDs/schwertmannites as visible-light-responsive Fenton catalysts for the degradation of chlortetracycline and related cytotoxicity" . | JOURNAL OF CLEANER PRODUCTION 391 (2023) . |
| APA | Xu, Yu-Hang , Liu, Xiang-Ji , Xiang, Ji-Zun , Zhang, Zhi-Qiang , Qiao, Xing-Xing , Li, Ya-Feng et al. Nitrogen-doped-CQDs/schwertmannites as visible-light-responsive Fenton catalysts for the degradation of chlortetracycline and related cytotoxicity . | JOURNAL OF CLEANER PRODUCTION , 2023 , 391 . |
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Anaerobic oxidation of methane (AOM) coupled with electron transfer to electrodes has recently showed great promise for energy harvesting in microbial electrochemical reactors. To date this process has been reported limited to the syntrophic cooperation of archaea and bacteria in mixed cultures. It remains unknown whether pure archaea alone can catalyze electricity production from methane. Here we report the performance of AOM-driven electricity generation by a single methanogen Methanosarcina barkeri. M a poised electrode potential of + 300 mV vs. SHE, a maximum current of 649.7 mA m(-2) was achieved from methane with an appreciable Coulombic efficiency up to 86.9%. The electrogenic mechanism analysis demonstrated that M. barkeri donated most of electrons to electrodes directly and secreted soluble redox-active compounds to facilitate indirect extracellular electron transfer (EET). Electrochemical in situ Fourier transform infrared spectra and metabolic inhibitions suggested the methyl-coenzyme M reductase alpha-subunit (McrA), NiFe hydrogenases and cytochrome proteins were involved in the AOM-EET process. This work provides the first proof of concept for AOM-powered electricity production by a single archaeon via reversed methanogenesis and suggests methanogens may play an important role in coupling AOM with the reduction of solid electron acceptors in natural environments.
Keyword ：
Anaerobic methane oxidation Anaerobic methane oxidation Cytochromes Cytochromes Electrogenesis Electrogenesis Extracellular electron transfer Extracellular electron transfer Methanosarcina barkeri Methanosarcina barkeri NiFe hydrogenases NiFe hydrogenases
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| GB/T 7714 | Yu, Linpeng , He, Dan , Zhang, Eryi et al. Electricity from anaerobic methane oxidation by a single methanogenic archaeon Methanosarcina barkeri [J]. | CHEMICAL ENGINEERING JOURNAL , 2021 , 405 . |
| MLA | Yu, Linpeng et al. "Electricity from anaerobic methane oxidation by a single methanogenic archaeon Methanosarcina barkeri" . | CHEMICAL ENGINEERING JOURNAL 405 (2021) . |
| APA | Yu, Linpeng , He, Dan , Zhang, Eryi , He, Qiuxiang , Li, Jibing , Ren, Zhiyong Jason et al. Electricity from anaerobic methane oxidation by a single methanogenic archaeon Methanosarcina barkeri . | CHEMICAL ENGINEERING JOURNAL , 2021 , 405 . |
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Artificial redox mediators can be employed to improve the electron transfer efficiency during sludge methanogenesis, whereas these artificial redox mediators have possible deficiencies, such as high cost and non-biodegradability. For large-scale commercial applications, more cost-effective and environmentally friendly alternatives should be developed. Herein, the potential of extracellular polymeric substances (EPS) as natural redox mediators to improve methanogenesis was investigated. Compared to the control test without EPS addition, the methane (CH4) production yield was increased by 83.5 +/- 2.4% with an EPS dosage of 0.50 g/L and the lag phase duration was shortened by 45.6 +/- 7.0%, along with the enhanced sludge dewaterability. Spectroelectrochemical measurements implied that EPS addition notably changed the intensities of different redoxactive groups, which decreased the charge transfer resistance and enhanced the extracellular electron transfer efficiency. These redox-active groups were mainly from the solubilization and hydrolysis of sludge protein due to increased protease activities, thereby leading to a higher acetate concentration during the acidification step. Further investigation showed that EPS addition also improved the activities of both acetotrophic and hydrogenotrophic methanogens, as indicated by a higher abundance of alpha subunit of methyl coenzyme M reductase (mcrA) genes, enhancing CH4 production. This work provides an innovative strategy for improving sludge anaerobic digestion with efficient additives.
Keyword ：
Extracellular polymeric substances Extracellular polymeric substances mcrA mcrA Methanogenesis Methanogenesis Redox mediators Redox mediators Sludge protein Sludge protein
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| GB/T 7714 | Hu, Andong , Cheng, Xiaoyuan , Wang, Chao et al. Extracellular polymeric substances trigger an increase in redox mediators for enhanced sludge methanogenesis [J]. | ENVIRONMENTAL RESEARCH , 2020 , 191 . |
| MLA | Hu, Andong et al. "Extracellular polymeric substances trigger an increase in redox mediators for enhanced sludge methanogenesis" . | ENVIRONMENTAL RESEARCH 191 (2020) . |
| APA | Hu, Andong , Cheng, Xiaoyuan , Wang, Chao , Kang, Li , Chen, Piao , He, Qiuxiang et al. Extracellular polymeric substances trigger an increase in redox mediators for enhanced sludge methanogenesis . | ENVIRONMENTAL RESEARCH , 2020 , 191 . |
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有别于传统的通过富集分离纯化技术获得一些纯培养污染物降解功能微生物,稳定同位素技术(SIP-DNA)可以更加便捷地鉴定出功能基因。该文研究针对SIP-DNA中密度梯度离心这一核心技术,获得了该技术的条件及相关参数。浮力密度和DNA浓度结果表明该方法可以有效地把同位素标记和非同位素标记的DNA分离,为SIP-DNA后续高通量测序奠定基础。同时也为离心机管理人员和实验人员正确使用该方法提供技术手段。
Keyword ：
功能微生物 功能微生物 密度梯度离心 密度梯度离心 浮力密度 浮力密度 稳定同位素 稳定同位素
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| GB/T 7714 | 何秋香 . 基于密度梯度离心技术分离稳定同位素DNA的方法研究 [J]. | 实验科学与技术 , 2020 , 18 (02) : 32-35 . |
| MLA | 何秋香 . "基于密度梯度离心技术分离稳定同位素DNA的方法研究" . | 实验科学与技术 18 . 02 (2020) : 32-35 . |
| APA | 何秋香 . 基于密度梯度离心技术分离稳定同位素DNA的方法研究 . | 实验科学与技术 , 2020 , 18 (02) , 32-35 . |
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