空位工程介导的中空结构 ZnO/ZnS S 型异质结用于高效光催化制取 H2

IF 15.7 1区 化学 Q1 CHEMISTRY, APPLIED Chinese Journal of Catalysis Pub Date : 2024-09-01 DOI:10.1016/S1872-2067(24)60099-9
Fangxuan Liu , Bin Sun , Ziyan Liu , Yingqin Wei , Tingting Gao , Guowei Zhou
{"title":"空位工程介导的中空结构 ZnO/ZnS S 型异质结用于高效光催化制取 H2","authors":"Fangxuan Liu ,&nbsp;Bin Sun ,&nbsp;Ziyan Liu ,&nbsp;Yingqin Wei ,&nbsp;Tingting Gao ,&nbsp;Guowei Zhou","doi":"10.1016/S1872-2067(24)60099-9","DOIUrl":null,"url":null,"abstract":"<div><p>Designing a step-scheme (S-scheme) heterojunction photocatalyst with vacancy engineering is a reliable approach to achieve highly efficient photocatalytic H<sub>2</sub> production activity. Herein, a hollow ZnO/ZnS S-scheme heterojunction with O and Zn vacancies (V<sub>O, Zn</sub>-ZnO/ZnS) is rationally constructed <em>via</em> ion-exchange and calcination treatments. In such a photocatalytic system, the hollow structure combined with the introduction of dual vacancies endows the adequate light absorption. Moreover, the O and Zn vacancies serve as the trapping sites for photo-induced electrons and holes, respectively, which are beneficial for promoting the photo-induced carrier separation. Meanwhile, the S-scheme charge transfer mechanism can not only improve the separation and transfer efficiencies of photo-induced carrier but also retain the strong redox capacity. As expected, the optimized V<sub>O, Zn</sub>-ZnO/ZnS heterojunction exhibits a superior photocatalytic H<sub>2</sub> production rate of 160.91 mmol g<sup>–1</sup> h<sup>–1</sup>, approximately 643.6 times and 214.5 times with respect to that obtained on pure ZnO and ZnS, respectively. Simultaneously, the experimental results and density functional theory calculations disclose that the photo-induced carrier transfer pathway follows the S‐scheme heterojunction mechanism and the introduction of O and Zn vacancies reduces the surface reaction barrier. This work provides an innovative strategy of vacancy engineering in S-scheme heterojunction for solar‐to‐fuel energy conversion.</p></div>","PeriodicalId":9832,"journal":{"name":"Chinese Journal of Catalysis","volume":"64 ","pages":"Pages 152-165"},"PeriodicalIF":15.7000,"publicationDate":"2024-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Vacancy engineering mediated hollow structured ZnO/ZnS S-scheme heterojunction for highly efficient photocatalytic H2 production\",\"authors\":\"Fangxuan Liu ,&nbsp;Bin Sun ,&nbsp;Ziyan Liu ,&nbsp;Yingqin Wei ,&nbsp;Tingting Gao ,&nbsp;Guowei Zhou\",\"doi\":\"10.1016/S1872-2067(24)60099-9\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><p>Designing a step-scheme (S-scheme) heterojunction photocatalyst with vacancy engineering is a reliable approach to achieve highly efficient photocatalytic H<sub>2</sub> production activity. Herein, a hollow ZnO/ZnS S-scheme heterojunction with O and Zn vacancies (V<sub>O, Zn</sub>-ZnO/ZnS) is rationally constructed <em>via</em> ion-exchange and calcination treatments. In such a photocatalytic system, the hollow structure combined with the introduction of dual vacancies endows the adequate light absorption. Moreover, the O and Zn vacancies serve as the trapping sites for photo-induced electrons and holes, respectively, which are beneficial for promoting the photo-induced carrier separation. Meanwhile, the S-scheme charge transfer mechanism can not only improve the separation and transfer efficiencies of photo-induced carrier but also retain the strong redox capacity. As expected, the optimized V<sub>O, Zn</sub>-ZnO/ZnS heterojunction exhibits a superior photocatalytic H<sub>2</sub> production rate of 160.91 mmol g<sup>–1</sup> h<sup>–1</sup>, approximately 643.6 times and 214.5 times with respect to that obtained on pure ZnO and ZnS, respectively. Simultaneously, the experimental results and density functional theory calculations disclose that the photo-induced carrier transfer pathway follows the S‐scheme heterojunction mechanism and the introduction of O and Zn vacancies reduces the surface reaction barrier. This work provides an innovative strategy of vacancy engineering in S-scheme heterojunction for solar‐to‐fuel energy conversion.</p></div>\",\"PeriodicalId\":9832,\"journal\":{\"name\":\"Chinese Journal of Catalysis\",\"volume\":\"64 \",\"pages\":\"Pages 152-165\"},\"PeriodicalIF\":15.7000,\"publicationDate\":\"2024-09-01\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Chinese Journal of Catalysis\",\"FirstCategoryId\":\"92\",\"ListUrlMain\":\"https://www.sciencedirect.com/science/article/pii/S1872206724600999\",\"RegionNum\":1,\"RegionCategory\":\"化学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q1\",\"JCRName\":\"CHEMISTRY, APPLIED\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Chinese Journal of Catalysis","FirstCategoryId":"92","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S1872206724600999","RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"CHEMISTRY, APPLIED","Score":null,"Total":0}
引用次数: 0

摘要

设计具有空位工程的阶梯型(S-scheme)异质结光催化剂是实现高效光催化产生 H2 活性的可靠方法。本文通过离子交换和煅烧处理,合理地构建了具有 O 和 Zn 空位(VO,Zn-ZnO/ZnS)的中空 ZnO/ZnS S 型异质结。在这种光催化系统中,中空结构结合双空位的引入,使其具有足够的光吸收能力。此外,O 空位和 Zn 空位分别作为光诱导电子和空穴的捕获位点,有利于促进光诱导载流子分离。同时,S 型电荷转移机制不仅能提高光诱导载流子的分离和转移效率,还能保持较强的氧化还原能力。正如预期的那样,优化的 VO、Zn-ZnO/ZnS 异质结的光催化 H2 产率高达 160.91 mmol g-1 h-1,分别是纯 ZnO 和 ZnS 的约 643.6 倍和 214.5 倍。同时,实验结果和密度泛函理论计算表明,光诱导载流子转移途径遵循 S 型异质结机制,O 和 Zn 空位的引入降低了表面反应势垒。这项工作为太阳能到燃料的能量转换提供了一种在 S 型异质结中进行空位工程的创新策略。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
查看原文
分享 分享
微信好友 朋友圈 QQ好友 复制链接
本刊更多论文
Vacancy engineering mediated hollow structured ZnO/ZnS S-scheme heterojunction for highly efficient photocatalytic H2 production

Designing a step-scheme (S-scheme) heterojunction photocatalyst with vacancy engineering is a reliable approach to achieve highly efficient photocatalytic H2 production activity. Herein, a hollow ZnO/ZnS S-scheme heterojunction with O and Zn vacancies (VO, Zn-ZnO/ZnS) is rationally constructed via ion-exchange and calcination treatments. In such a photocatalytic system, the hollow structure combined with the introduction of dual vacancies endows the adequate light absorption. Moreover, the O and Zn vacancies serve as the trapping sites for photo-induced electrons and holes, respectively, which are beneficial for promoting the photo-induced carrier separation. Meanwhile, the S-scheme charge transfer mechanism can not only improve the separation and transfer efficiencies of photo-induced carrier but also retain the strong redox capacity. As expected, the optimized VO, Zn-ZnO/ZnS heterojunction exhibits a superior photocatalytic H2 production rate of 160.91 mmol g–1 h–1, approximately 643.6 times and 214.5 times with respect to that obtained on pure ZnO and ZnS, respectively. Simultaneously, the experimental results and density functional theory calculations disclose that the photo-induced carrier transfer pathway follows the S‐scheme heterojunction mechanism and the introduction of O and Zn vacancies reduces the surface reaction barrier. This work provides an innovative strategy of vacancy engineering in S-scheme heterojunction for solar‐to‐fuel energy conversion.

求助全文
通过发布文献求助,成功后即可免费获取论文全文。 去求助
来源期刊
Chinese Journal of Catalysis
Chinese Journal of Catalysis 工程技术-工程:化工
CiteScore
25.80
自引率
10.30%
发文量
235
审稿时长
1.2 months
期刊介绍: The journal covers a broad scope, encompassing new trends in catalysis for applications in energy production, environmental protection, and the preparation of materials, petroleum chemicals, and fine chemicals. It explores the scientific foundation for preparing and activating catalysts of commercial interest, emphasizing representative models.The focus includes spectroscopic methods for structural characterization, especially in situ techniques, as well as new theoretical methods with practical impact in catalysis and catalytic reactions.The journal delves into the relationship between homogeneous and heterogeneous catalysis and includes theoretical studies on the structure and reactivity of catalysts.Additionally, contributions on photocatalysis, biocatalysis, surface science, and catalysis-related chemical kinetics are welcomed.
期刊最新文献
Mechanism study on the influence of surface properties on the synthesis of dimethyl carbonate from CO2 and methanol over ceria catalysts Efficient electrocatalytic urea synthesis from CO2 and nitrate over the scale-up produced FeNi alloy-decorated nanoporous carbon Unraveling the roles of atomically-dispersed Au in boosting photocatalytic CO2 reduction and aryl alcohol oxidation Interfacial coordination bonds accelerate charge separation for unprecedented hydrogen evolution over S-scheme heterojunction Activating d10 electronic configuration to regulate p-band centers as efficient active sites for solar energy conversion into H2 by surface atomic arrangement
×
引用
GB/T 7714-2015
复制
MLA
复制
APA
复制
导出至
BibTeX EndNote RefMan NoteFirst NoteExpress
×
×
提示
您的信息不完整,为了账户安全,请先补充。
现在去补充
×
提示
您因"违规操作"
具体请查看互助需知
我知道了
×
提示
现在去查看 取消
×
提示
确定
0
微信
客服QQ
Book学术公众号 扫码关注我们
反馈
×
意见反馈
请填写您的意见或建议
请填写您的手机或邮箱
已复制链接
已复制链接
快去分享给好友吧!
我知道了
×
扫码分享
扫码分享
Book学术官方微信
Book学术文献互助
Book学术文献互助群
群 号:481959085
Book学术
文献互助 智能选刊 最新文献 互助须知 联系我们:info@booksci.cn
Book学术提供免费学术资源搜索服务,方便国内外学者检索中英文文献。致力于提供最便捷和优质的服务体验。
Copyright © 2023 Book学术 All rights reserved.
ghs 京公网安备 11010802042870号 京ICP备2023020795号-1