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Visible-light-active defective MoO3 for photocatalytic algae inactivation: Preparation and mechanisms
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Jie CAI, Yuan-yuan XU, Gang WEN*
China Environmental Science | 2025, 45(11) : 6343 - 6352
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China Environmental Science | 2025, 45(11): 6343-6352
• Environmental Ecology •
Visible-light-active defective MoO3 for photocatalytic algae inactivation: Preparation and mechanisms
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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
Published: 2025-11-20
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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.

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 .
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Year 2025 volume 45 Issue 11
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  • Receive Date：2025-04-16
  • Online Date：2026-10-08
  • Published：2025-11-20
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  • Received：2025-04-16
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    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
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表12种不同金属材料的力学参数
科
Family		 属数
Number of
genus		 种数
Number of
species		 占总种数比例
Percentage of
total species (%)		 属
Genus		 种数
Number of
species		 占总种数比例
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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