基于光电化学还原的硝酸盐去除技术研究进展

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Abstract As a common pollutant in water, nitrate has nonnegligible harmful effects on human health and the ecological environment. Faced with an increasingly severe energy crisis, the development of green, clean and sustainable nitrate removal technologies to replace the conventional resource-intensive denitrification process is urgently needed. Photoelectrochemical nitrate reduction powered by sunlight has become a research hotspot at home and abroad. Based on the way photogenerated electrons being transferred from semiconductor to nitrate, this technology can be categorized into photocatalytic reduction, photoelectrocatalytic reduction, and microbial photoelectrotrophic reduction. In this review, the mechanisms of three photoelectrochemical nitrate reduction technologies were discussed. With a focus on improving system performance, the selection and design strategies of photocatalysts, photoelectrodes and microbial photosensitizers were also summarized. Moreover, the technical difficulties of photoelectrochemical nitrate reduction are clarified and the future directions of research are proposed, such as regulating the pathway of microbial absorption and utilization of photogenerated electrons through genetic engineering and other methods. The insights provided will serve as a reference for the development of new nitrate removal and reutilization technologies.

Key words： photoelectrochemistry nitrate removal photocatalyst photoelectrode photosensitizer

Received: 04 September 2024

PACS:

X703

Corresponding Authors: 王亚宜,责任作者,教授,wyywater@126.com E-mail: wyywater@126.com

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	Articles by authors
	HUANG Tian-rong
	WANG Kai-chong
	LI Zi-bin
	LI Dan-ping
	WANG Han
	WANG Ya-yi

Cite this article:

HUANG Tian-rong,WANG Kai-chong,LI Zi-bin等. Research progress of nitrate removal technologies based on photoelectrochemical reduction[J]. CHINA ENVIRONMENTAL SCIENCECE, 2025, 45(4): 1878-1888.

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http://www.zghjkx.com.cn/EN/ OR http://www.zghjkx.com.cn/EN/Y2025/V45/I4/1878

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