上海大学学报(自然科学版)
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光催化去除水体中重金属离子的研究进展
许振民, 施利毅
基金资助:
国家自然科学基金资助项目(2207020402);上海市科委资助项目(19DZ2293100);上海市科委资助项目(19DZ2293100)
Review on photocatalytic removal of heavy metals from water
XU Zhenmin, SHI Liyi
摘要： 重金属污染的治理是环境问题的重点和难点。光催化技术为重金属的去除提供了一条绿色、可持续的途径。二氧化钛由于独特的光、电化学性能,被视为最适合的光催化剂。然而,由于带隙大、载流子复合速率高等缺陷,限制了其在可见光和自然太阳光下的应用。全面总结了二氧化钛在水体中重金属去除的最新进展,分析了表面修饰、金属和非金属掺杂、固载化、半导体复合等改性技术对重金属去除效率的影响,并对反应机理进行了讨论。最后,对光催化去除重金属的研究现状和存在的问题进行了评述。
关键词: , 重金属, 光催化, 二氧化钛
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Abstract: Treatment of heavy metal pollution is challenging, and hence, is the focus of tackling environmental problems. Photocatalysis-based technologies provide a green and sustainable route to heavy metal removal. TiO$_{2}$ is regarded as the most suitable photocatalyst because of its unique photo- and electrochemical performances. However, its application under visible light and natural sunlight is limited due to its large band gap and high carrier recombination rate. This review summarises a series of photo catalysts that have been developed in the recent years for heavy metal removal. Strategies for improving the photocatalytic activity of TiO$_{2}$, which involve surface modification, metal/non-metal doping, immobilisation, and coupling with other semiconductors, were summarised; the corresponding reaction mechanisms were also discussed. Moreover, the status and drawbacks of the current research on the photocatalytic removal of heavy metals were critically discussed.
Key words: heavy metal, photocatalysis, TiO2
许振民, 施利毅.
光催化去除水体中重金属离子的研究进展 [J]. 上海大学学报(自然科学版), doi: 10.12066/j.issn.1007-2861.2245.
XU Zhenmin, SHI Liyi.
Review on photocatalytic removal of heavy metals from water [J]. Journal of Shanghai University（Natural Science Edition）, doi: 10.12066/j.issn.1007-2861.2245.
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链接本文: https://www.journal.shu.edu.cn/CN/10.12066/j.issn.1007-2861.2245
