Work

Strong Built-In Electric Field-Assisted ZnO/ZnIn 2 S 4 S-Scheme Heterostructure to Promote Photocatalytic Hydrogen Production

Year: 2024

Type: article

Abstract: Photocatalysis is an eco-friendly and significant perspective for generating hydrogen. Our study investigated the ZnO/ZnIn 2 S 4 heterojunction photocatalytic system prepared through hydrothermal technique. Accordingly, the ZnIn 2 S 4 nanofibers loaded with 11 mol % ZnO exhibited the hydrogen evolution rate of about 1998 μmol g –1 h –1, which was 2.6 times higher than the pristine ZnIn 2 S 4 . In situ electron paramagnetic resonance results proved the S-scheme photocarrier transport route, and in situ KPFM further characterized the internal electric field between ZnO and ZnIn 2 S 4 . The development of S-scheme heterojunctions allows for the spatial segregation and transport of charges by preserving photoexcited holes and electrons with a tremendous redox potential. Furthermore, the photoelectrochemical analysis demonstrated that the S-scheme heterojunction could also be employed for the separation of photoexcited species.

Source: Inorganic Chemistry

DOI: 10.1021/acs.inorgchem.4c03502

Authors: Ling Zhou, Qiyuan Fang, Mingyang Liu, Shumail Farhan, Songyu Yang, Yan Wu

Institution: China University of Geosciences

Language: English

Topic: Advanced Photocatalysis Techniques

Subfield: Renewable Energy, Sustainability and the Environment

Field: Energy

Domain: Physical Sciences

SDG: Affordable and clean energy

Open Access status: bronze

Funder: National Natural Science Foundation of China