In situ self-assembly fabrication of ultrathin sheet-like CuS modified g-C3N4heterojunction and its enhanced visible-light photocatalytic performance

Zheyuan Liu; Lingfang Qiu; Ke Wen; Banpeng Cao; Ping Li; Yi Tang; Xiangshu Chen; Hidetoshi Kita; Shuwang Duo

doi:10.1088/1361-6528/ac94da

In situ self-assembly fabrication of ultrathin sheet-like CuS modified g-C₃N₄heterojunction and its enhanced visible-light photocatalytic performance

Nanotechnology. 2022 Oct 21;34(1). doi: 10.1088/1361-6528/ac94da.

Authors

Zheyuan Liu¹, Lingfang Qiu^{1

2}, Ke Wen¹, Banpeng Cao^{1

3}, Ping Li¹, Yi Tang², Xiangshu Chen⁴, Hidetoshi Kita⁵, Shuwang Duo¹

Affiliations

¹ Jiangxi Key Laboratory of Surface Engineering, Jiangxi Science and Technology Normal University, Nanchang 330013, People's Republic of China.
² Department of Chemistry and Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, Fudan University, Shanghai 200433, People's Republic of China.
³ Key Laboratory of Organic Chemistry, Jiangxi Science and Technology Normal University, Nanchang 330013, People's Republic of China.
⁴ Institute of Advanced Materials (IAM), State-Province Joint Engineering Laboratory of Zeolite Membrane Materials, College of Chemistry and Chemical Engineering, Jiangxi Normal University, Nanchang 330022, People's Republic of China.
⁵ Graduate School of Science and Technology for Innovation, Graduate School Science and Engineering, Yamaguchi University, Ube 755-8611, Japan.

PMID: 36162239
DOI: 10.1088/1361-6528/ac94da

Abstract

Photocatalysts with heterojunction structure have been widely used for organic degradation. In this study, CuS/g-C₃N₄heterojunction was formed byin situself-assembly via a simply hydrothermal method. A series of characterizations were applied to analyzing the morphology, structure, optical properties and photo-induced electron transfer of the samples. The effect of CuS mass ratio in the CuS/g-C₃N₄composite on methyl blue (10 mg l^-1) degradation under visible-light illumination was discussed. When CuS mass ratio was 60%, CuS/g-C₃N₄behaved the highest photocatalytic efficiency which is 17 times higher than that of pure g-C₃N₄, and the optimal heterojunction exhibited promising photocatalytic stability as well. The synthesized CuS/g-C₃N₄with intimate contact and promising photocatalytic performance provides important implications on analogous researches on g-C₃N₄-based heterojunctions for photocatalytic applications.

Keywords: CuS/g-C3N4 composite; MB degradation; g-C3N4; visible light.