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学者姓名：夏铭谦
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Abstract ：
Eutrophication in water bodies has caused harmful algal blooms (HABs) to occur worldwide, resulting in significant impacts on both the environment and human well-being. In this work, a Z -scheme Ag2MoO4/BiVO4 (AMB) photocatalyst with Ag as the charge transfer mediator was constructed by depositing Ag2MoO4 on BiVO4 through a simple in -situ generation method and characterized by various techniques. In addition, AMB-30% has the best photocatalytic performance, removing 99% of chlorophyll a within 3 h and performing well under different conditions. The physiological characteristics of algal cells were also investigated. The results showed that AMB-30% could not only destabilize the stability, membrane permeability and physiological function of algal cells, but also degrade the intracellular organic matter leaked out from the algal cells, effectively avoiding the secondary pollution of the water body while inactivating algae. Based on the identification of the active substance, the possible algal removal mechanism of Ag2MoO4/BiVO4 under the photocatalytic system was further proposed. Finally, the results of the five -cycle experiments and XRD characterization of AMB-30% demonstrated that it has great recyclability and stability, thus offering a favorable prospect in mitigating HABs.
Keyword ：
Ag2MoO4/BiVO4 Ag2MoO4/BiVO4 Mechanism Mechanism Microcystis aeruginosa Microcystis aeruginosa Photocatalysis Photocatalysis Visible light Visible light Z-scheme Z-scheme
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| GB/T 7714 | Fan, Gongduan , Hu, Kaiwei , Xia, Mingqian et al. Z-scheme Ag2MoO4/BiVO4 photocatalyst using Ag as charge transfer mediator: Performance optimization and Microcystis aeruginosa inactivation application [J]. | JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING , 2024 , 12 (2) . |
| MLA | Fan, Gongduan et al. "Z-scheme Ag2MoO4/BiVO4 photocatalyst using Ag as charge transfer mediator: Performance optimization and Microcystis aeruginosa inactivation application" . | JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING 12 . 2 (2024) . |
| APA | Fan, Gongduan , Hu, Kaiwei , Xia, Mingqian , Cai, Chenjian , He, Zhimin , Luo, Jing et al. Z-scheme Ag2MoO4/BiVO4 photocatalyst using Ag as charge transfer mediator: Performance optimization and Microcystis aeruginosa inactivation application . | JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING , 2024 , 12 (2) . |
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Abstract ：
In recent years, photocatalytic technology has been increasingly used for the treatment of algal blooms in water bodies due to its high efficiency and environmental advantages. However, conventional semiconductor materials suffer from high electron-hole recombination rate, low carrier mobility and weak surface adsorption ability, which made their photocatalytic performance limited. Therefore, the photocatalytic performance of the composites can be improved by coupling another semiconductor material to form a heterojunction to accelerate electron transfer. In this study, a novel composite Ag3VO4/BiVO4 (ABV) photocatalyst was successfully prepared by in-situ deposition method for the photocatalytic inactivation of Microcystis aeruginosa (M. aeruginosa) under visible light. The photocatalyst showed excellent photocatalytic activity, and the degradation rate of M. aeruginosa chlorophyll a was up to 99.8% within 4 h under visible light. During the photocatalytic degradation, the morphology of algae cells, the permeability of cell membrane, the organic matter inside and outside the cells, the antioxidant system and the soluble protein were seriously damaged. Moreover, three cycle experiments showed that the prepared ABV photocatalyst had high reusability. Finally, a possible mechanism of M. aeruginosa inactivation was proposed. In general, the synthesized ABV photocatalyst can effectively inactivate cyanobacteria under visible light and provided a new method for M. aeruginosa removal in water. © 2023 Elsevier Ltd
Keyword ：
Bacteria Bacteria Cytology Cytology Degradation Degradation Electronic properties Electronic properties Environmental technology Environmental technology Heterojunctions Heterojunctions Hole mobility Hole mobility Morphology Morphology Photocatalytic activity Photocatalytic activity Photoelectrochemical cells Photoelectrochemical cells Reusability Reusability
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| GB/T 7714 | Fan, Gongduan , Lin, Qiuan , Lin, Jiuhong et al. Effective photocatalytic inactivation of Microcystis aeruginosa by Ag3VO4/BiVO4 heterojunction under visible light [J]. | Chemosphere , 2024 , 347 . |
| MLA | Fan, Gongduan et al. "Effective photocatalytic inactivation of Microcystis aeruginosa by Ag3VO4/BiVO4 heterojunction under visible light" . | Chemosphere 347 (2024) . |
| APA | Fan, Gongduan , Lin, Qiuan , Lin, Jiuhong , Xia, Mingqian , Chen, Shoubin , Luo, Jing et al. Effective photocatalytic inactivation of Microcystis aeruginosa by Ag3VO4/BiVO4 heterojunction under visible light . | Chemosphere , 2024 , 347 . |
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Economic development and urbanization naturally give rise to expanding demand for new buildings, whose construction and operation inevitably lead to significant increases in energy consumption and greenhouse gas emissions. To better conserve resources and protect the environment, technologies for green buildings have evolved significantly in the past two decades. In this study, a scientometric analysis of green buildings research from 2003 to 2023 was performed using CiteSpace. A total of 1986 articles retrieved from the Web of Science (WoS) core collection database were used as the data source for an in-depth analysis of research trends, hotspots, and future directions, showing changes in publication numbers, core journals, key countries, and institutions that have made remarkable contributions in this field. The results showed that the field of green buildings research is in a phase of rapid growth. The current research hotspots include the adoption of the green buildings paradigm, rating systems, energy performance, greenhouse gas emissions, indoor environmental quality, and green roofs/walls. Based on the keywords citation bursts and literature review, we believe that government promotion measures, use of renewable energy, integration with plants, and application of artificial intelligence (AI) in green buildings will be the most promising development directions in the future.
Keyword ：
CiteSpace CiteSpace development prospects development prospects green buildings green buildings research hotspots research hotspots visualization visualization
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| GB/T 7714 | Wang, Chongqing , Che, Yanhong , Xia, Mingqian et al. The Evolution and Future Directions of Green Buildings Research: A Scientometric Analysis [J]. | BUILDINGS , 2024 , 14 (2) . |
| MLA | Wang, Chongqing et al. "The Evolution and Future Directions of Green Buildings Research: A Scientometric Analysis" . | BUILDINGS 14 . 2 (2024) . |
| APA | Wang, Chongqing , Che, Yanhong , Xia, Mingqian , Lin, Chenghan , Chen, Yuqi , Li, Xi et al. The Evolution and Future Directions of Green Buildings Research: A Scientometric Analysis . | BUILDINGS , 2024 , 14 (2) . |
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Polycyclic aromatic hydrocarbons (PAHs) with their carcinogenic, teratogenic, and mutagenic effects can cause great damage to the ecosystem and public health when present in water. With bioremediation, PAH contamination in water environment can be greatly reduced in an eco-friendly manner. It has thus become the research focus for many environmental scientists. In this study, a bibliometric analysis on three-decade (1990-2022) development of PAH bioremediation in water environment was conducted from temporal and spatial dimensions using CiteSpace. A total of 2480 publications, obtained from Web of Science core collection database, were used to explore the basic characteristics, hotspots, and prospects of the research area. The results showed that (1) bioremediation/biodegradation of PAHs in water environment has been getting researchers' attention since 1990, and is gaining even more traction as time goes on. (2) In terms of countries, China and the USA were the major contributors in this research area, while at the institutional level, the Chinese Academy of Sciences has produced the most research results. However, international cooperation across regions was lacking in the field. (3) Environment Science and Technology, Chemosphere, Applied and Environment Microbiology, Journal of Hazardous Materials, and Environment Pollution were the 5 most cited journals in this field. (4) There were three major stages the field has gone through, each with distinct research hotspots, including initial stage (1990-1994), mechanism investigation (1995-2000), and application exploration (2001-2010; 2011-2022). Finally, research perspectives were proposed, covering three directions, namely, bioavailability, immobilization, and viable but nonculturable (VBNC) bacteria.
Keyword ：
Bibliometric analysis Bibliometric analysis Biodegradation Biodegradation Bioremediation Bioremediation CiteSpace CiteSpace PAHs PAHs Water Water
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| GB/T 7714 | Xia, Mingqian , Chen, Bo , Fan, Gongduan et al. The shifting research landscape for PAH bioremediation in water environment: a bibliometric analysis on three decades of development [J]. | ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH , 2023 , 30 (27) : 69711-69726 . |
| MLA | Xia, Mingqian et al. "The shifting research landscape for PAH bioremediation in water environment: a bibliometric analysis on three decades of development" . | ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH 30 . 27 (2023) : 69711-69726 . |
| APA | Xia, Mingqian , Chen, Bo , Fan, Gongduan , Weng, Sunxian , Qiu, Rongpeng , Hong, Zhanglin et al. The shifting research landscape for PAH bioremediation in water environment: a bibliometric analysis on three decades of development . | ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH , 2023 , 30 (27) , 69711-69726 . |
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As more and more pharmaceutically active compounds (PhACs) have been found in the aquatic environment in recent years, the risks they pose to human health cannot be neglected. In this work, an innovative S-scheme AgBr/BiOBr photocatalyst for carbamazepine (CBZ) degradation was synthesized using a simple precipitation approach. XRD, SEM, XPS, UV-vis, PL, TPR, and EIS were employed to analyze the samples' crystal structure, morphology, chemical state, optical, and electrochemical properties. The effectiveness of the photocatalyst was also demonstrated through experiments, where a removal efficiency of 99.64 % was achieved under visible light for CBZ degradation using AgBr/BiOBr 10 wt%. Furthermore, photocatalytic cycling experiments, XRD characterization and cation exposure tests revealed that as-prepared photocatalysts had high reusability and stability. The intermediates were identified by HPLC-MS to reveal the possible degradation pathways of CBZ. The biological toxicity of CBZ and its degradation intermediates was also evaluated using the Vibrio fischeri luminescent bacteriological method and the toxicological calculation software. The findings of quenching experiments and ESR analyses indicated that center dot O-2(-) and h(+) were the principal reactive species. The photoelectron transfer mechanism of AgBr/BiOBr photocatalyst was proposed as well. Overall, the synthesized photocatalysts are promising to provide a new insights into CBZ removal in the aqueous environment.
Keyword ：
AgBr/BiOBr AgBr/BiOBr Carbamazepine Carbamazepine Degradation mechanism Degradation mechanism S-scheme S-scheme Visible light photocatalysis Visible light photocatalysis
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| GB/T 7714 | Fan, Gongduan , Hu, Kaiwei , Li, Xia et al. Highly efficient S-scheme AgBr/BiOBr with visible light photocatalytic performance for carbamazepine degradation: Mechanism insight and toxicity assessment [J]. | JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING , 2023 , 11 (5) . |
| MLA | Fan, Gongduan et al. "Highly efficient S-scheme AgBr/BiOBr with visible light photocatalytic performance for carbamazepine degradation: Mechanism insight and toxicity assessment" . | JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING 11 . 5 (2023) . |
| APA | Fan, Gongduan , Hu, Kaiwei , Li, Xia , Xia, Mingqian , Chen, Zhuoyi , Chen, Shoubin et al. Highly efficient S-scheme AgBr/BiOBr with visible light photocatalytic performance for carbamazepine degradation: Mechanism insight and toxicity assessment . | JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING , 2023 , 11 (5) . |
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本发明提供了一种漂浮型水凝胶光催化剂的制备方法及其应用，其先进行BiVO4/Ag3VO4粉末光催化剂的合成，再通过漂浮型制备过程，从而制备出一种在可见光下增强铜绿微囊藻光催化失活的光催化剂材料。本发明光催化剂具有光催化性能强和稳定性好、可见光吸收能力强和光生电荷的分离效率高等特点。该合成方法简单易行，绿色环保，能有效控制蓝藻水华，在水处理技术领域具有良好的前景。
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| GB/T 7714 | 范功端 , 胡恺葳 , 林久洪 et al. 一种漂浮型水凝胶光催化剂的制备方法及其应用 : CN202210506010.7[P]. | 2022-05-11 00:00:00 . |
| MLA | 范功端 et al. "一种漂浮型水凝胶光催化剂的制备方法及其应用" : CN202210506010.7. | 2022-05-11 00:00:00 . |
| APA | 范功端 , 胡恺葳 , 林久洪 , 罗静 , 夏铭谦 , 鄢忠森 et al. 一种漂浮型水凝胶光催化剂的制备方法及其应用 : CN202210506010.7. | 2022-05-11 00:00:00 . |
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本发明公开了一种钼酸铋/钒酸铁复合纳米材料及其制备方法和在声光催化降解水中污染物的应用，将Bi(NO3)3·5H2O和Na2MoO4·2H2O分别溶于乙二醇中；然后在Bi(NO3)3·5H2O中加入FeVO4，超声搅拌直到溶解，再与Na2MoO4·2H2O混合，并在磁力搅拌下持续30min；最后，转移至高压釜中，加热至160℃下保持24h，冷却至室温后，经离子水和乙醇漂洗、干燥得到Bi2MoO6/FeVO4复合纳米材料。本发明采用简单的一步溶剂热法制备出Bi2MoO6/FeVO4异质结构。该材料可通过添加不同质量的Bi2MoO6/FeVO4来控制其摩尔比，可制得不同处理效率的Bi2MoO6/FeVO4复合材料。
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| GB/T 7714 | 范功端 , 林秋安 , 杨尚武 et al. 钼酸铋/钒酸铁复合纳米材料及其制备方法和在声光催化降解水中污染物的应用 : CN202210541271.2[P]. | 2022-05-19 00:00:00 . |
| MLA | 范功端 et al. "钼酸铋/钒酸铁复合纳米材料及其制备方法和在声光催化降解水中污染物的应用" : CN202210541271.2. | 2022-05-19 00:00:00 . |
| APA | 范功端 , 林秋安 , 杨尚武 , 罗静 , 王颖慕 , 鄢忠森 et al. 钼酸铋/钒酸铁复合纳米材料及其制备方法和在声光催化降解水中污染物的应用 : CN202210541271.2. | 2022-05-19 00:00:00 . |
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The treatment and reuse of wastewater are crucial for the effective utilization and protection of global water resources. Polycyclic aromatic hydrocarbons (PAHs), as one of the most common organic pollutants in industrial wastewater, are difficult to remove due to their relatively low solubility and bioavailability in the water environment. However, biosurfactants with both hydrophilic and hydrophobic groups are effective in overcoming these difficulties. Therefore, a biosurfactant-producing strain Pseudomonas mosselii MP-6 was isolated in this study to enhance the bioavailability and biodegradation of PAHs, especially high-molecular-weight PAHs (HMW-PAHs). FTIR and LC-MS analysis showed that the MP-6 surfactant belongs to rhamnolipids, a type of biopolymer, which can reduce the water surface tension from 73.20 mN/m to 30.61 mN/m at a critical micelle concentration (CMC = 93.17 mg/L). The enhanced solubilization and biodegradation of PAHs, particularly HMW-PAHs (when MP-6 was introduced), were also demonstrated in experiments. Furthermore, comprehensive environmental stress tolerance tests were conducted to confirm the robustness of the MP-6 biosurfactant, which signifies the potential adaptability and applicability of this biosurfactant in diverse environmental remediation scenarios. The results of this study, therefore, have significant implications for future applications in the treatment of wastewater containing HMW-PAHs, such as coking wastewater.
Keyword ：
biodegradation biodegradation biosurfactant biosurfactant environmental stress environmental stress HMW-PAHs HMW-PAHs Pseudomonas mosselii Pseudomonas mosselii
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| GB/T 7714 | Xia, Mingqian , Wang, Shibin , Chen, Bo et al. Enhanced Solubilization and Biodegradation of HMW-PAHs in Water with a Pseudomonas mosselii-Released Biosurfactant [J]. | POLYMERS , 2023 , 15 (23) . |
| MLA | Xia, Mingqian et al. "Enhanced Solubilization and Biodegradation of HMW-PAHs in Water with a Pseudomonas mosselii-Released Biosurfactant" . | POLYMERS 15 . 23 (2023) . |
| APA | Xia, Mingqian , Wang, Shibin , Chen, Bo , Qiu, Rongpeng , Fan, Gongduan . Enhanced Solubilization and Biodegradation of HMW-PAHs in Water with a Pseudomonas mosselii-Released Biosurfactant . | POLYMERS , 2023 , 15 (23) . |
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A novel photocatalytic material Ag2MoO4/TACN was synthesized, and the heterogeneous interfacial effect between them enhanced its photocatalytic algae removal performance. Meanwhile, the crystal phase change of Ag2MoO4 was also found during the recombination process, which cramped the band gap width from 3.35 to 3.06 eV. The improved algal removal efficiency of the synthesized photocatalyst was clearly demonstrated when nearly 100 % of Microcystis aeruginosa got removed under 3 h illumination. Moreover, better inactivation effect was observed under alkaline and neutral conditions. From the results, possible mechanisms for the photocatalytic activities were proposed. ROS (center dot OH, and center dot O-2(-)), h(+) and Ag+ produced by Ag2MoO4/TACN were the main substances causing algae inactivation, as they destroy the normal functions of cell membrane and consequently lead to the leakage of electrolytes as well as algal organic matter. In addition, under the continuous attack of ROS and Ag+, the photosynthetic and metabolic activities of algal cells were hindered, while the PB content, SOD and CAT activities were also continuously reduced, leading to the mortality of algal cells. Finally, recycling experiments confirmed the recyclability and reusability of Ag2MoO4/TACN, further illustrating its potential as a promising photocatalyst for practical applications.
Keyword ：
Ag2MoO4/TACN Ag2MoO4/TACN Cell breakage Cell breakage Inhibition mechanism Inhibition mechanism Microcystis aeruginosa Microcystis aeruginosa Photocatalytic oxidation Photocatalytic oxidation
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| GB/T 7714 | Fan, Gongduan , Wu, Xinyi , Tao, Yang et al. Enhanced inactivation of Microcystis aeruginosa by heterogeneous interfacial Ag2MoO4/TACN under visible light [J]. | JOURNAL OF WATER PROCESS ENGINEERING , 2023 , 56 . |
| MLA | Fan, Gongduan et al. "Enhanced inactivation of Microcystis aeruginosa by heterogeneous interfacial Ag2MoO4/TACN under visible light" . | JOURNAL OF WATER PROCESS ENGINEERING 56 (2023) . |
| APA | Fan, Gongduan , Wu, Xinyi , Tao, Yang , Xia, Mingqian , Chen, Zhuoyi , Li, Hao et al. Enhanced inactivation of Microcystis aeruginosa by heterogeneous interfacial Ag2MoO4/TACN under visible light . | JOURNAL OF WATER PROCESS ENGINEERING , 2023 , 56 . |
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Practical applications of photocatalysis in algae removal often involve the use of photoreactors, which can be of many different configurations. In this study, a fluidized bed photoreactor (FBPR) with an external magnetic field was designed and constructed to achieve algae inactivation continuously and stably. Magnetic photocatalyst ZnFe2O4/Ag3PO4/g-C3N4 attached to Fe3O4 aggregate, was dispersed and fixed at the bottom of the reactor to form a flower-like structure, which can not only increase the effective irradiation area of the photocatalyst, but also enhances mass transfer by inducing flow disturbance. Under the optimal operating conditions, i.e., 0.04 m/s flow rate, 200 mT magnetic field strength, and 0.025 g photocatalyst loading, the photoreactor can effectively remove algae cells within 6 h. During the continuous operation experiment, the quality of the magnetic photocatalyst and aggregate did not decrease significantly, and there was still a 90% removal efficiency after 18 h of continuous operation. Furthermore, in the experiment where humic acid was added to simulate actual water environment, certain advantages can still be observed with the FBPR. As a continuous reactor using a magnetic photocatalyst, the FBPR has the characteristics of high availability, low cost, and low energy consumption.
Keyword ：
Continuous operation Continuous operation Fluidized bed photoreactor (FBPR) Fluidized bed photoreactor (FBPR) Magnetic field Magnetic field Photocatalytic algal inactivation Photocatalytic algal inactivation ZnFe2O4/Ag3PO4/g-C3N4 ZnFe2O4/Ag3PO4/g-C3N4
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| GB/T 7714 | Fan, Gongduan , Song, Yiqing , Xia, Mingqian et al. Photocatalytic inactivation of algae in a fluidized bed photoreactor with an external magnetic field [J]. | JOURNAL OF ENVIRONMENTAL MANAGEMENT , 2022 , 307 . |
| MLA | Fan, Gongduan et al. "Photocatalytic inactivation of algae in a fluidized bed photoreactor with an external magnetic field" . | JOURNAL OF ENVIRONMENTAL MANAGEMENT 307 (2022) . |
| APA | Fan, Gongduan , Song, Yiqing , Xia, Mingqian , You, Yifan , Zou, Jianyong , Wei, Qi . Photocatalytic inactivation of algae in a fluidized bed photoreactor with an external magnetic field . | JOURNAL OF ENVIRONMENTAL MANAGEMENT , 2022 , 307 . |
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