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This study reveals the mechanism by which MoO3/MoO3-x photocatalyst inactivate algal cells. The photocatalysts were synthesized via hydrothermal and thermal polymerization methods without introducing foreign metal ions, and their physicochemical properties were characterized using XRD, XPS, SEM, and UV-Vis spectroscopy. The photocatalytic performance for algae removal was evaluated under visible light. Results demonstrated that 98.36% chlorophyll a was removed by 0.2g/L MoO3/MoO3-x within 6hours and the photocatalyst exhibited effective algal inhibition across a broad pH range (4.0~11.0). Additionally, the photocatalyst maintained stable performance at various initial algal concentrations. Quenching experiments confirmed that photogenerated holes (h+), hydroxyl radicals (·OH), and superoxide radicals (·O2-) were the primary reactive species responsible for algal cells inactivation. This result clarifies the core mechanism of MoO3/MoO3-x in photocatalytic algae removal.

, authors=Jie CAI, Yuan-yuan XU, Gang WEN*, authorsList=Jie CAI, Yuan-yuan XU, Gang WEN, authorCompany=null, correspAuthors=Gang WEN, authorNote=null, correspAuthorsNote=null, copyrightStatement=null, copyrightOwner=null, extLink=null, articleAbsUrl=null, sourceXml=null, magXml=null, pdfUrl=null, pdf=null, pdfFileSize=null, pdfExtLink=null, richHtmlUrl=null, mobilePdfUrl=null, reviewReport=null, pdfFirstPage=null, abstractGraph=null, abstractGraphContent=null, abstractVideo=null, citation=null, cebUrl=null, magXmlContent=null, mapNumber=null, fund=null), CN=ArticleExt(id=1314918507314249805, articleId=1314918505212903499, tenantId=1146029695717560320, journalId=1234093305789726721, language=CN, title=缺陷氧化钼的制备及其可见光催化控藻机制研究, columnId=1234106388268503686, journalTitle=中国环境科学, columnName=环境生态, runingTitle=null, highlight=null, articleAbstract=

通过水热-热聚合法(未引入外源金属离子)制备MoO3/MoO3-x光催化剂,采用X射线衍射(XRD)、X射线光电子能谱(XPS)、扫描电子显微镜(SEM)和紫外-可见漫反射光谱(UV-Vis)等手段对其物理化学特性进行了表征,并系统探究其光催化除藻效果与作用机理.结果表明:0.2g/L MoO3/MoO3-x光催化剂在可见光下照射6h后可去除近98.36%的叶绿素a;在较宽pH值范围内(4.0~11.0)表现出优异控藻效果,且在不同初始藻浓度下仍能保持稳定的除藻性能.猝灭实验证实光催化过程中形成的光生空穴(h+)、羟基自由基(·OH)和超氧自由基(·O2-)等活性物质是造成藻细胞失活的关键因素,据此明确了MoO3/MoO3-x光催化除藻的核心作用机制.

, authors=蔡婕, 徐源源, 文刚*, authorsList=蔡婕, 徐源源, 文刚, authorCompany=null, correspAuthors=文刚, authorNote=

蔡婕(1999-),女,甘肃武威人,西安建筑科技大学硕士研究生,主要研究方向饮用水水质安全保障.发表论文1篇..

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蔡婕(1999-),女,甘肃武威人,西安建筑科技大学硕士研究生,主要研究方向饮用水水质安全保障.发表论文1篇..

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蔡婕(1999-),女,甘肃武威人,西安建筑科技大学硕士研究生,主要研究方向饮用水水质安全保障.发表论文1篇..

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缺陷氧化钼的制备及其可见光催化控藻机制研究
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蔡婕 , 徐源源 , 文刚 *
中国环境科学 | 环境生态 2025,45(11): 6343-6352
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缺陷氧化钼的制备及其可见光催化控藻机制研究
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蔡婕 , 徐源源, 文刚*
作者信息
  • 西安建筑科技大学环境与市政工程学院,西北水资源与环境生态教育部重点实验室,陕西省环境工程重点实验室,陕西 西安 710055
通讯作者:
* 责任作者,教授,
作者简介:

蔡婕(1999-),女,甘肃武威人,西安建筑科技大学硕士研究生,主要研究方向饮用水水质安全保障.发表论文1篇..

Visible-light-active defective MoO3 for photocatalytic algae inactivation: Preparation and mechanisms
Jie CAI , Yuan-yuan XU, Gang WEN*
Affiliations
  • Shaanxi Key Laboratory of Environmental Engineering, Key Laboratory of Northwest Water Resource, Environment and Ecology, Ministry of Education, School of Environmental and Municipal Engineering, XiXan University of Architecture and Technology, XiXan 710055, China
出版时间: 2025-11-20
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通过水热-热聚合法(未引入外源金属离子)制备MoO3/MoO3-x光催化剂,采用X射线衍射(XRD)、X射线光电子能谱(XPS)、扫描电子显微镜(SEM)和紫外-可见漫反射光谱(UV-Vis)等手段对其物理化学特性进行了表征,并系统探究其光催化除藻效果与作用机理.结果表明:0.2g/L MoO3/MoO3-x光催化剂在可见光下照射6h后可去除近98.36%的叶绿素a;在较宽pH值范围内(4.0~11.0)表现出优异控藻效果,且在不同初始藻浓度下仍能保持稳定的除藻性能.猝灭实验证实光催化过程中形成的光生空穴(h+)、羟基自由基(·OH)和超氧自由基(·O2-)等活性物质是造成藻细胞失活的关键因素,据此明确了MoO3/MoO3-x光催化除藻的核心作用机制.

MoO3/MoO3-x  /  可见光  /  光催化剂  /  抑藻

This study reveals the mechanism by which MoO3/MoO3-x photocatalyst inactivate algal cells. The photocatalysts were synthesized via hydrothermal and thermal polymerization methods without introducing foreign metal ions, and their physicochemical properties were characterized using XRD, XPS, SEM, and UV-Vis spectroscopy. The photocatalytic performance for algae removal was evaluated under visible light. Results demonstrated that 98.36% chlorophyll a was removed by 0.2g/L MoO3/MoO3-x within 6hours and the photocatalyst exhibited effective algal inhibition across a broad pH range (4.0~11.0). Additionally, the photocatalyst maintained stable performance at various initial algal concentrations. Quenching experiments confirmed that photogenerated holes (h+), hydroxyl radicals (·OH), and superoxide radicals (·O2-) were the primary reactive species responsible for algal cells inactivation. This result clarifies the core mechanism of MoO3/MoO3-x in photocatalytic algae removal.

MoO3/MoO3-x  /  visible light  /  photocatalyst  /  algae inhibition
蔡婕, 徐源源, 文刚. 缺陷氧化钼的制备及其可见光催化控藻机制研究. 中国环境科学, 2025 , 45 (11) : 6343 -6352 .
Jie CAI, Yuan-yuan XU, Gang WEN. Visible-light-active defective MoO3 for photocatalytic algae inactivation: Preparation and mechanisms[J]. China Environmental Science, 2025 , 45 (11) : 6343 -6352 .
  • 国家自然科学基金资助项目(52570012; 52370018)
  • 陕西省重点科技创新团队项目(2023-CX-TD-32)
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  • 接收时间:2025-04-16
  • 首发时间:2026-10-08
  • 出版时间:2025-11-20
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  • 收稿日期:2025-04-16
基金
国家自然科学基金资助项目(52570012; 52370018)
陕西省重点科技创新团队项目(2023-CX-TD-32)
作者信息
    西安建筑科技大学环境与市政工程学院,西北水资源与环境生态教育部重点实验室,陕西省环境工程重点实验室,陕西 西安 710055

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Percentage of total
species (%)
鹅膏菌科Amanitaceae 2 11 5.26 鹅膏菌属 Amanita 10 4.78
小菇科 Mycenaceae 2 12 5.74 丝盖伞属 Inocybe 5 2.39
多孔菌科 Polyporaceae 8 14 6.70 蜡蘑属 Laccaria 5 2.39
红菇科 Russulaceae 3 23 11.00 小皮伞属 Marasmius 6 2.87
小菇属 Mycena 11 5.26
光柄菇属 Pluteus 5 2.39
红菇属 Russula 17 8.13
栓菌属 Trametes 5 2.39
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