Design of earth-abundant Z-scheme g-C3N4/rGO/FeOOH ternary heterojunctions with excellent photocatalytic activity

Autor: Nayab Arif, Kui Li, Zhao-Xu Wang, Yan-Tao Wang, Yi-Chuan Dou, Shiquan Liu, Futian Liu
Rok vydání: 2021
Předmět:
Zdroj: CrystEngComm. 23:1991-1998
ISSN: 1466-8033
DOI: 10.1039/d1ce00045d
Popis: Iron is one of the most abundant elements on the surface of the earth (5.1%), but is rarely used for photocatalytic hydrogen production due to its unsuitable band structure. Herein, a ternary Z-scheme g-C3N4/rGO/FeOOH heterostructure photocatalyst for hydrogen production was designed and fabricated. Due to its narrow bandgap and a low oxygen evolution overpotential of FeOOH, the Z-scheme g-C3N4/rGO/FeOOH ternary heterojunction exhibited excellent photocatalytic hydrogen production with the yields of 124.9 and 869.8 μmol h−1 g−1 (244.9 and 107.4 times larger than that of pristine g-C3N4) under visible and UV-visible light irradiation, respectively. This work could expand the usage of the earth-abundant element for solar energy conversion and provide a new viewpoint for the development of high-performance photocatalysts through a rational design of the component of the heterostructure.
Databáze: OpenAIRE