Visible-light-responsive homologous heterostructure of oxynitrides constructed to boost charge separation and water splitting

IF 10.4 1区化学 Q1 CHEMISTRY, MULTIDISCIPLINARY

Science China Chemistry Pub Date : 2024-09-23 DOI:10.1007/s11426-024-2208-3

Hai Zou, Yunfeng Bao, Xueshang Xin, Yu Qi, Tengfeng Xie, Fuxiang Zhang

{"title":"Visible-light-responsive homologous heterostructure of oxynitrides constructed to boost charge separation and water splitting","authors":"Hai Zou, Yunfeng Bao, Xueshang Xin, Yu Qi, Tengfeng Xie, Fuxiang Zhang","doi":"10.1007/s11426-024-2208-3","DOIUrl":null,"url":null,"abstract":"<div><p>Constructing type II heterostructures 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<sub>4−<i>x</i></sub>N<sub><i>y</i></sub> and YTaON<sub>2</sub>. 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<sub>4−<i>x</i></sub>N<sub><i>y</i></sub> and YTaON<sub>2</sub>). Meanwhile, detailed structural characterizations and spectroscopy analysis have been made to confirm the formation of heterostructure and promotion of spatial charge separation.\n</p><div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":772,"journal":{"name":"Science China Chemistry","volume":"68 1","pages":"186 - 191"},"PeriodicalIF":10.4000,"publicationDate":"2024-09-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Science China Chemistry","FirstCategoryId":"1","ListUrlMain":"https://link.springer.com/article/10.1007/s11426-024-2208-3","RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"CHEMISTRY, MULTIDISCIPLINARY","Score":null,"Total":0}

引用次数: 0

Abstract

Constructing type II heterostructures 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−xN_y and YTaON₂. 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−xN_y and YTaON₂). Meanwhile, detailed structural characterizations and spectroscopy analysis have been made to confirm the formation of heterostructure and promotion of spatial charge separation.

查看原文本刊更多论文

用于促进电荷分离和水分裂的氮氧化物的可见光响应同源异质结构

构建II型异质结构是一种被广泛认可的提高电荷分离和光催化效率的策略，但基于可见光响应半导体制造同源异质结构仍然具有挑战性，特别是对于热稳定性较低的（氧）氮化物。在这里，我们以ytaon4−xNy和YTaON2的氧氮化物为基础合成了一个同源异质结构（记为YTON_H）。该异质结构表现为II型带结构取向，并通过镁（Mg）粉末辅助氮化方法获得亲密界面。与广泛报道的异源异质结构相比，YTON_H同源异质结构与YTaO4−xNy和YTaON2相比，同样具有增强的电荷分离和光催化水分解性能。同时进行了详细的结构表征和光谱分析，证实了异质结构的形成和空间电荷分离的促进。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

求助全文

约1分钟内获得全文求助全文

来源期刊

Science China Chemistry CHEMISTRY, MULTIDISCIPLINARY-

CiteScore

14.40

自引率

7.30%

发文量

3787

审稿时长

2.2 months

期刊介绍： Science China Chemistry, co-sponsored by the Chinese Academy of Sciences and the National Natural Science Foundation of China and published by Science China Press, publishes high-quality original research in both basic and applied chemistry. Indexed by Science Citation Index, it is a premier academic journal in the field. Categories of articles include: Highlights. Brief summaries and scholarly comments on recent research achievements in any field of chemistry. Perspectives. Concise reports on thelatest chemistry trends of interest to scientists worldwide, including discussions of research breakthroughs and interpretations of important science and funding policies. Reviews. In-depth summaries of representative results and achievements of the past 5–10 years in selected topics based on or closely related to the research expertise of the authors, providing a thorough assessment of the significance, current status, and future research directions of the field.