Photocatalytic oxidation of NO on reduction type semiconductor photocatalysts: effect of metallic Bi on CdS nanorods

Ruina Li; Xiaoyu Ou; Li Zhang; Zheng Qi; Xiaofeng Wu; Chunshan Lu; Jiajie Fan; Kangle Lv

doi:10.1039/d1cc03516a

Photocatalytic oxidation of NO on reduction type semiconductor photocatalysts: effect of metallic Bi on CdS nanorods

Chem Commun (Camb). 2021 Sep 30;57(78):10067-10070. doi: 10.1039/d1cc03516a.

Authors

Ruina Li¹, Xiaoyu Ou¹, Li Zhang¹, Zheng Qi¹, Xiaofeng Wu^{1

2}, Chunshan Lu³, Jiajie Fan⁴, Kangle Lv¹

Affiliations

¹ Key Laboratory of Resources Conversion and Pollution Control of the State Ethnic Affairs Commission, College of Resources and Environmental Science, South-Central University for Nationalities, Wuhan, Hubei Province 430074, China. lvkangle@mail.scuec.edu.cn.
² Surface Science Laboratory, Department of Materials and Earth Sciences, Technische Universität Darmstadt, Otto-Berndt-Strasse 3, 64287 Darmstadt, Germany. xiaofengwu0501@163.com.
³ State Key Laboratory of Green Chemistry Synthesis Technology, Zhejiang University of Technology, Hangzhou 310032, China. lcszjcn@zjut.edu.cn.
⁴ School of Materials Science and Engineering, Zhengzhou University, Zhengzhou 450001, China.

PMID: 34514489
DOI: 10.1039/d1cc03516a

Abstract

We report the first visible light photocatalytic oxidation of NO on CdS nanorods (CdS-NRs), one of the typical reduction type semiconductor photocatalysts. The NO removal rate in a continuous reactor sharply increases from 44% to 58% after in situ deposition of Bi nanoplates on CdS-NRs. The LSPR effect of metallic Bi causes the dramatic production of superoxide radicals (˙O₂^-) and singlet oxygen (¹O₂) that are responsible for the oxidation of NO.