Plasma-induced black bismuth tungstate as a photon harvester for photocatalytic carbon dioxide conversion

Kang Zhong; Anqi Zhou; Guli Zhou; Qidi Li; Jinman Yang; Zhaolong Wang; Xingwang Zhu; Junchao Qian; Yingjie Hua; Huaming Li; Hui Xu

doi:10.1039/D0NJ05082B

Plasma-induced black bismuth tungstate as a photon harvester for photocatalytic carbon dioxide conversion†

Kang Zhong,^a Anqi Zhou,^a Guli Zhou,^a Qidi Li,^a Jinman Yang,^a Zhaolong Wang,^a Xingwang Zhu,

^a Junchao Qian,

^b Yingjie Hua,^c Huaming Li*^a and Hui Xu

*^a

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* Corresponding authors

^a School of Chemistry and Chemical Engineering, Institute for Energy Research, Jiangsu University, Zhenjiang, China
E-mail: lihm@ujs.edu.cn, xh@ujs.edu.cn

^b School of Chemistry, Biology and Materials Engineering, Suzhou University of Science and Technology, Suzhou 215009, Jiangsu, China

^c The Key Laboratory of Electrochemical Energy Storage and Energy Conversion of Hainan Province, School of Chemistry and Chemical Engineering, Hainan Normal University, Haikou, China

Abstract

The photocatalytic conversion of carbon dioxide into fuels and valuable chemicals is a promising avenue to address the challenge of environmental change. Plasma treatment as a popular and effective method to prepare and modify materials based on its ultra-high energy and efficiency has attracted significant attention. In this study, abundant Bi quantum dots (Bi QDs) are reduced in situ on the surface of black Bi₂WO₆ nanosheets using an effective dielectric barrier discharge (DBD) plasma technology. The reduction of Bi QDs leads to the generation of a large number of unsaturated coordination atoms, which improves the light absorption performance of Bi₂WO₆. Benefiting from the unique interface design, black Bi₂WO₆ shows superior CO generation rate, roughly threefold higher than that of pristine Bi₂WO₆ nanosheets. Our work provides new insights and can be a reference in plasma modification engineering of catalyst surfaces and photoreduction of CO₂.

New Journal of Chemistry

Plasma-induced black bismuth tungstate as a photon harvester for photocatalytic carbon dioxide conversion†

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