Fabrication and enhanced visible-light photocatalytic H2 production of B-doped N-deficient g-C3N4/CdS Hybrids with robust 2D/2D hetero-interface interaction. (9th April 2023)

• Record Type: Journal Article
• Authors: Chu, Guoliang; Qiu, Lingfang; Wen, Ke; Li, Ping; Cao, Banpeng; Tang, Yi; Chen, Xiangshu; Kita, Hidetoshi; Duo, Shuwang
• Is Part Of: Nanotechnology. Volume 34:Number 15(2023)
• Publication Date: 2023-04-09
• Subjects: g-C3N4 -- B-dope -- N defect -- H2 production -- 2D/2D heterojunction; Nanotechnology -- Periodicals; Nanotechnology -- Periodicals; Nanotechnology; Publications périodiques; Nanotechnologies; Periodicals; 620.5
• DOI: 10.1088/1361-6528/acb1b6
• Languages: English
• ISSNs: 0957-4484

Abstract

Abstract: 2D layered photocatalysts with proper electronic structure have sparked much attention in the field of visible-light photocatalysis for H2 production. Herein, by simply calcining the mixture of ultrathin g-C3 N4 (CNN) and NaBH4, heteroatom B and N defect were simultaneously introduced into g-C3 N4 . The obtained modified g-C3 N4 (BDCNN) was further coupled with 2D flower-like CdS nanosheet. The optimal 2D/2D BDCNN/CdS-15% heterojunction behaved ideal photocatalytic activity for H2 revolution by water splitting, and the highest H2 revolution rate was as high as 1013.8 μ mol g −1 h −1, which was 6.7 times, 2 times, and 5.8 times of the corresponding values of pristine CNN, BDCNN and CdS respectively. It was evidenced that the band structure of 2D/2D BDCNN/CdS-15% was well tuned for better visible-light adsorption and higher separation efficiency of photo-induced carriers for enhancing H2 revolution performance. The achievement in this study provided informative principles for exploring g-C3 N4 based heterojunctions with higher H2 -production performance.