Enhanced H2evolution performance by carbonized SiC/g-C3N4heterojunction under visible-light illumination

Mengfan Ma; Guoliang Chu; Lingfang Qiu; Banpeng Cao; Ping Li; Yan Shen; Xiangshu Chen; Hidetoshi Kita; Shuwang Duo

doi:10.1088/1361-6528/ac614d

Enhanced H₂evolution performance by carbonized SiC/g-C₃N₄heterojunction under visible-light illumination

Nanotechnology. 2022 Jul 13;33(40). doi: 10.1088/1361-6528/ac614d.

Authors

Mengfan Ma¹, Guoliang Chu¹, Lingfang Qiu¹, Banpeng Cao¹, Ping Li¹, Yan Shen¹, Xiangshu Chen², Hidetoshi Kita³, Shuwang Duo¹

Affiliations

¹ Jiangxi Key Laboratory of Surface Engineering, Jiangxi Science and Technology Normal University, Nanchang 330013, People's Republic of China.
² 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.
³ Graduate School of Science and Technology for Innovation, Graduate School Science and Engineering, Yamaguchi University, Ube 755-8611, Japan.

PMID: 35334472
DOI: 10.1088/1361-6528/ac614d

Abstract

In this study, carbonized silicon carbide/graphitic carbon nitride ((SiC/C)/g-C₃N₄) composites were fabricated via a facile calcination method. The optimal SiC/C/g-C₃N₄composite shows an excellent visible-light photocatalytic activity for water splitting, with the highest hydrogen evolution amount being 200.2μmol, which is four times higher than that of pure g-C₃N₄when triethanolamine and platinum (1.0 wt%) are used as the sacrificial agent and cocatalyst, respectively. With an intimate interface between SiC/C and g-C₃N₄, the energy band structure of g-C₃N₄was well engineered for photocatalytic H₂production. This study provides a novel method for fabricating g-C₃N₄-based heterojunctions for application in environmental conservation.

Keywords: H2; SiC; g-C3N4; photocatalytic.