Pt负载暴露(001)晶面Bi<sub>2</sub>WO<sub>6</sub>催化剂合成及光催化性能

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Abstract Bi₂WO₆ nanosheets with exposed (001) facets were synthesized via a hydrothermal process, and then Pt nanoparticles were loaded on the surface of the as-synthesized Bi₂WO₆ through photo-reduction method. The photocatalytic performance of the as-prepared photocatalysts was probed by the photocatalytic oxidation of benzyl alcohol and decomposition of rhodamine B (RhB). In terms of the oxidation of benzyl alcohol, the conversion rate over Pt loaded Bi₂WO₆ samples could attain 20.7%, which was about twice that of Bi₂WO₆ without Pt loading. Additionally, the mineralization rate of RhB over the Pt loaded samples (~81.1%) was remarkably higher than that of the photocatalysts without Pt loading (~55.8%) after 40min irradiation. These results collectively demonstrated the superior degradation and mineralization ability of the Pt loaded Bi₂WO₆ nanosheets under irradiation. The boosting photocatalytic activity of the Pt loaded photocatalysts could be attributed to the synergistic effect of Pt loading and the exposure of high energy facets. The loading of Pt nanoparticles, as a cocatalyst, increases the active sites on the surface of the photocatalysts and thereby promotes the separation and migration efficiency of photo-induced electron-hole pairs on the facets.

Key words： Pt nanoparticles Bi₂WO₆ visible-light photocatalysis pollutant degradation

Received: 26 February 2020

PACS:

X703.5

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	Articles by authors
	FANG Sheng-qiong
	ZHOU Zhi-yong
	CHEN Yue-ling
	NIU Qing
	GAO Sheng-jie
	CHEN Qiao-shan
	BI Jin-hong

Cite this article:

FANG Sheng-qiong,ZHOU Zhi-yong,CHEN Yue-ling等. Synthesis of Pt loaded Bi₂WO₆ photocatalysis with exposed (001) facets and its photocatalytic performance[J]. CHINA ENVIRONMENTAL SCIENCECE, 2020, 40(10): 4323-4329.

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http://www.zghjkx.com.cn/EN/ OR http://www.zghjkx.com.cn/EN/Y2020/V40/I10/4323

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