Details

Autor(en) / Beteiligte

• Wang, Long
• Kong, Yuehua
• Fang, Yuanxing
• Cai, Pingru
• Lin, Wei
• Wang, Xinchen

Titel

A Ga Doped NiTiO3 Photocatalyst for Overall Water Splitting under Visible Light Illumination

Ist Teil von

• Advanced functional materials, 2022-11, Vol.32 (46), p.n/a

Ort / Verlag

Hoboken: Wiley Subscription Services, Inc

Erscheinungsjahr

2022

Quelle

Wiley Online Library Journals Frontfile Complete

Beschreibungen/Notizen

• Photocatalytic overall water splitting (OWS) is an appealing strategy to convert solar energy and produce hydrogen fuel. NiTiO3 (NTO) is an earth‐abundant material, which is studied as a robust photocatalyst with broad absorptance of sunlight spectrum, ranging from ultraviolet to infrared regions. Herein, by a rational design of an NTO‐based photocatalytic system, the activity for photocatalytic OWS is realized under both ultraviolet and visible light illuminations, and H2 and O2 evolution is achieved within the stoichiometric ratio of 2:1. Specifically, Gallium is doped into the NTO crystal to activate the material for photocatalytic OWS by improving photoexcited charge migration. Meanwhile, Co and Pt species are screened out as the oxygen evolution and hydrogen evolution co‐catalysts, respectively. Theoretical stimulations, steady state experiments, and operando characterizations are acquired to investigate the OWS performance. This research paves the pathway to apply this small‐bandgap photocatalyst for OWS by maximizing the solar energy harvesting. NiTiO3 is an earth‐abundant photocatalyst with broad absorption of sunlight spectrum, ranging from ultraviolet to infrared regions. In this study, by a rational design of a NiTiO3‐based photocatalytic system, its activity for photocatalytic overall water splitting is realized under visible light illumination. Theoretical stimulations, steady‐state experiments, and operando characterizations are acquired to understand the performance for photocatalytic overall water splitting.