漂浮型BiOCl<sub>0.6</sub>I<sub>0.4</sub>/GO光催化剂的制备及其除藻性能

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Abstract Using expanded perlite(EP) as a floating carrier, the BiOCl_0.6I_0.4/GO photocatalyst was synthesized by water bath method and its removal efficiency on Microcystis aeruginosa under visible light was investigated as well. The composition and morphology of synthesized samples were characterized by XRD, SEM, FTIR spectra, UV-Vis DRS and XPS. Results indicated that the synthesized BiOCl_0.6I_0.4/GO/EP composite showed better algae removal performance than that of BiOCl_0.6I_0.4/EP and GO/EP. Even after four cycles reuse, the composite still showed better photocatalytic activity. Furthermore, free radical capture experiment proved that photo-generated holes (h⁺) were the main active species for the inactivation of algae in photocatalytic process. Finally, according to the energy band analysis and free radical capture experiment, the mechanism of BiOCl_0.6I_0.4/GO/EP composite was proposed.

Key words： BiOCl_0.6I_0.4/GO visible light photocatalysis algae removal

Received: 22 March 2020

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X703

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	YANG Liu-liu
	LIU Hong
	CHEN Hou-wang
	CHEN Meng
	ZHANG Peng

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YANG Liu-liu,LIU Hong,CHEN Hou-wang等. Preparation of floating BiOCl_0.6I_0.4/GO photocatalyst and its algae removal performance[J]. CHINA ENVIRONMENTAL SCIENCECE, 2021, 41(10): 4633-4644.

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http://www.zghjkx.com.cn/EN/ OR http://www.zghjkx.com.cn/EN/Y2021/V41/I10/4633

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