In:
Energy Technology, Wiley, Vol. 7, No. 7 ( 2019-07)
Abstract:
Graphite carbon nitride (g‐C 3 N 4 ) 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‐C 3 N 4 ‐SiC heterojunction with loaded noble metal is constructed. The g‐C 3 N 4 ‐SiC‐Pt composite photocatalysts are successfully prepared by the combination method of bio‐reduction, sol deposition, and calcination. The layers of g‐C 3 N 4 are thinned, and both SiC and Pt nanoparticles are simultaneously tightly bound to g‐C 3 N 4 by calcination during the preparation of g‐C 3 N 4 ‐SiC‐Pt. The heterojunction formed at the interface of SiC and g‐C 3 N 4 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‐C 3 N 4 ‐bulk and g‐C 3 N 4 ‐SiC under visible light irradiation with a quantum efficiency of 2.76% at 420 nm, respectively.
Type of Medium:
Online Resource
ISSN:
2194-4288
,
2194-4296
DOI:
10.1002/ente.201900017
Language:
English
Publisher:
Wiley
Publication Date:
2019
detail.hit.zdb_id:
2700412-0
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