A Novel Visible‐Light‐Responsive Semiconductor ScTaO<sub>4−x</sub>N<sub>x</sub> for Photocatalytic Oxygen and Hydrogen Evolution Reactions
Lang Pei, Hong‐Ling Cai, Hao Jin, Taozhu Li, Heng Zhu, Yongjun Yuan, Jiasong Zhong, Shicheng Yan, Zhigang Zou
Abstract
Abstract Screening of visible‐light‐responsive semiconductor photocatalysts is a significant target for solar water splitting systems. Herein, a newly designed Ta‐based oxynitride, namely ScTaO 4−x N x , was successfully synthesized via nitrogen doping of ScTaO 4 oxide precursors at 1273 K under NH 3 flow. The ScTaO 4−x N x photocatalyst, with a strong band‐to‐band visible light absorption as far as 540 nm, can be employed for both water oxidation and reduction half‐reactions under visible light illumination, demonstrating great potential for photocatalytic water splitting.
Topics & Concepts
PhotocatalysisVisible spectrumWater splittingPhotochemistryMaterials scienceSemiconductorPhotocatalytic water splittingAbsorption (acoustics)DopingOxideOxygenNitrogenHydrogenOxygen evolutionOptoelectronicsChemistryCatalysisElectrochemistryPhysical chemistryBiochemistryComposite materialElectrodeOrganic chemistryMetallurgyAdvanced Photocatalysis TechniquesAmmonia Synthesis and Nitrogen ReductionPerovskite Materials and Applications