光催化去除水体中重金属离子的研究进展

doi:10.12066/j.issn.1007-2861.2245

Abstract

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, TiO$_{2}$

CLC Number:

XU Zhenmin, SHI Liyi. Review on photocatalytic removal of heavy metals from water[J]. Journal of Shanghai University（Natural Science Edition）, 2020, 26(4): 491-505.

Figures/Tables 8

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[1]	LI Qi, LUO Zhigang, CHEN Dayong, HUANG Shoushuang, HU Zhangjun, CHEN Zhiwen. Preparation and photocatalytic properties of ZnO/graphene composite [J]. Journal of Shanghai University（Natural Science Edition）, 2020, 26(3): 425-432.
[2]	SHI Zhengchi, HE Chiquan, XIONG Pengpeng, CHENG Xue. Effect of SMS on the phytoremediation of Ricinus communis to Cd/Zn polluted soil [J]. Journal of Shanghai University（Natural Science Edition）, 2018, 24(6): 931-937.
[3]	ZHANG Chunchun1,2, HE Chiquan1. PM_2.5 and its heavy metal contents in Shanghai and the assessment of health risk to residents [J]. Journal of Shanghai University（Natural Science Edition）, 2016, 22(6): 784-792.
[4]	RUAN Xiuxiu, ZUO Jianwei, CHEN Hua, XU Nannan, YANG Erwei. Synthesis of organism-based zinc-iron bimetallic catalyst by sol-gel and its visible photocatalytic activity to dyeing effluents [J]. Journal of Shanghai University（Natural Science Edition）, 2016, 22(4): 515-523.
[5]	LI Yinyin1,2, HE Chiquan1. Investigation of heavy metal pollution in soil around chemical industrial area in Shanghai [J]. Journal of Shanghai University（Natural Science Edition）, 2016, 22(2): 151-158.
[6]	TRONGANH Nguyen, WANG Yu-jia, WANG Bin, CHENG Ling-li,DING Nan, JIAO Zheng. Synthesis of TiO2 nanospheres with large surface area for visible light synergistic catalytic degradation of Cr(VI) and bisphenol A [J]. Journal of Shanghai University（Natural Science Edition）, 2015, 21(4): 490-502.
[7]	RUAN Xiu-xiu, XU Nan-nan, LIN Yu, QIAN Guang-ren. In Situ Formation of Organic Multivariate Layer Double Hydroxides in Electroplating Wastewater [J]. Journal of Shanghai University（Natural Science Edition）, 2013, 19(4): 358-362.
[8]	LU Qiang,LIU Yin-feng,LI Yu-guang,YANG Cheng-xia,RAN Ming-hao,YANG Hong,GU Ying,XIA Yi-ben. Photocatalysis Studies of Polyacrylonitrile/PolymetallicIron Oxides for Water Splitting under Visible Light [J]. Journal of Shanghai University（Natural Science Edition）, 2012, 18(3): 317-322.