摘要
Constructing typeⅡheterostructures represents a widely recognized strategy for enhancing charge separation and photocatalytic efficiency,but it remains challenging to fabricate homologous heterostructures based on visible-light-responsive semiconductors,especially for popularly investigated(oxy)nitrides with low thermal stability.Here,we synthesized a homologous heterostructure(denoted as YTON_H)based on the oxynitrides of YTaO_(4-x)N_(y)and YTa ON_(2).This heterostructure exhibits type Ⅱ band structure alignment and intimate interface achieved through a magnesium(Mg)powder-assisted nitridation method.Compared with widely reported heterologous heterostructures,the as-obtained YTON_H homologous heterostructure could similarly exhibit enhanced charge separation as well as photocatalytic water splitting performance with respect to its counterparts(YTaO_(4-x)N_(y)and YTaON_(2)).Meanwhile,detailed structural characterizations and spectroscopy analysis have been made to confirm the formation of heterostructure and promotion of spatial charge separation.
基金
supported by the National Natural Science Foundation of China(22332005,21925206,22279138,22261160369,22302194,22409022)
the Dalian Supports High-level Talent Innovation and Entrepreneurship Projects(2020RD06)
the China Postdoctoral Science Foundation(2023M743423 and 2024T170899)。
作者简介
Hai Zou,Equally contributed to this work;Yunfeng Bao,Equally contributed to this work;Corresponding author:Fuxiang Zhang,email:fxzhang@dicp.ac.cn。
