G‐C3N4‐SiC‐Pt for Enhanced Photocatalytic H2 Production from Water under Visible Light Irradiation. Issue 7 (9th May 2019)

• Record Type: Journal Article
• Authors: Du, Zhongyi; Sun, Pengju; Wu, Kuanhuai; Zheng, Xiarong; Zhang, Xingfeng; Huang, Jiale; Sun, Daohua; Zheng, Yanmei; Li, Qingbiao
• Is Part Of: Energy technology. Volume 7:Issue 7(2019:Jul.)
• Page Start: n/a
• Page End: n/a
• Publication Date: 2019-05-09
• Subjects: g-C3N4-SiC-Pt photocatalysts -- hydrogen evolution -- photocatalysis -- visible light; Energy development -- Periodicals; Power resources -- Periodicals; 333.79
• DOI: 10.1002/ente.201900017
• Languages: English
• ISSNs: 2194-4288

Abstract

Abstract : Graphite carbon nitride (g‐C3 N4 ) and SiC have drawn increasing attention for application in visible light photocatalytic hydrogen evolution by water splitting due to their unique band structure and high physicochemical stability. Herein, a g‐C3 N4 ‐SiC heterojunction with loaded noble metal is constructed. The g‐C3 N4 ‐SiC‐Pt composite photocatalysts are successfully prepared by the combination method of bio‐reduction, sol deposition, and calcination. The layers of g‐C3 N4 are thinned, and both SiC and Pt nanoparticles are simultaneously tightly bound to g‐C3 N4 by calcination during the preparation of g‐C3 N4 ‐SiC‐Pt. The heterojunction formed at the interface of SiC and g‐C3 N4 enhances the separation efficiency of the photogenerated electron–hole pairs. These composite photocatalysts achieve a high hydrogen evolution rate of 595.3 μmol h −1 g −1 with 1 wt% of deposited Pt, which is 3.7‐ and 2.07‐fold higher than those of g‐C3 N4 ‐bulk and g‐C3 N4 ‐SiC under visible light irradiation with a quantum efficiency of 2.76% at 420 nm, respectively. Abstract : A green and environmentally‐friendly exploration of noble metals loaded on photocatalysts for bio‐reduction, sol deposition, and calcination is reported. The composite photocatalyst g‐C3 N4 ‐SiC‐Pt achieves a high hydrogen evolution rate of 595.3 μmol h −1 g −1, which is 3.7‐ and 2.07‐fold higher than that of g‐C3 N4 ‐bulk and g‐C3 N4 ‐SiC under visible light irradiation with a quantum efficiency of 2.76% at 420 nm, respectively.