纳米超结构 C3N4/CoTiO3 在可见光照射下从水-醇溶液中生成氢气的光催化活性

IF 0.7 4区 化学 Q4 CHEMISTRY, MULTIDISCIPLINARY Theoretical and Experimental Chemistry Pub Date : 2024-09-26 DOI:10.1007/s11237-024-09806-8
M. L. Ovcharov, T. R. Stara, G. V. Korzhak, S. Ya. Kuchmiy
{"title":"纳米超结构 C3N4/CoTiO3 在可见光照射下从水-醇溶液中生成氢气的光催化活性","authors":"M. L. Ovcharov,&nbsp;T. R. Stara,&nbsp;G. V. Korzhak,&nbsp;S. Ya. Kuchmiy","doi":"10.1007/s11237-024-09806-8","DOIUrl":null,"url":null,"abstract":"<p>Nanocomposites based on crystalline carbon nitride (CGCN) and cobalt titanate (CoTiO<sub>3</sub>) have been synthesized and characterized by a number of physico-chemical methods (electron microscopy, electron and IR spectrophotometry, luminescence spectroscopy, and X-ray diffraction). It is concluded based on the analysis of the obtained results, in particular, the luminescence characteristics and Mott–Schottky dependences, that the S-scheme of separation of photogenerated charges between components is realized during the formation of CGCN/CoTiO<sub>3</sub> composites. This leads to a decrease in the recombination of electron–hole pairs and an increase in the efficiency of hydrogen evolution from water–ethanol solutions when compared to the presence of CGCN. The effective quantum yield of hydrogen formation is ~90% under light irradiation at λ = 405 nm with the participation of the composite of the optimal composition.</p>","PeriodicalId":796,"journal":{"name":"Theoretical and Experimental Chemistry","volume":"60 1","pages":"31 - 40"},"PeriodicalIF":0.7000,"publicationDate":"2024-09-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Photocatalytic Activity of Nanoheterostructures C3N4/CoTiO3 in Hydrogen Evolution from Water–Alcohol Solutions Under Visible Light Irradiation\",\"authors\":\"M. L. Ovcharov,&nbsp;T. R. Stara,&nbsp;G. V. Korzhak,&nbsp;S. Ya. Kuchmiy\",\"doi\":\"10.1007/s11237-024-09806-8\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<p>Nanocomposites based on crystalline carbon nitride (CGCN) and cobalt titanate (CoTiO<sub>3</sub>) have been synthesized and characterized by a number of physico-chemical methods (electron microscopy, electron and IR spectrophotometry, luminescence spectroscopy, and X-ray diffraction). It is concluded based on the analysis of the obtained results, in particular, the luminescence characteristics and Mott–Schottky dependences, that the S-scheme of separation of photogenerated charges between components is realized during the formation of CGCN/CoTiO<sub>3</sub> composites. This leads to a decrease in the recombination of electron–hole pairs and an increase in the efficiency of hydrogen evolution from water–ethanol solutions when compared to the presence of CGCN. The effective quantum yield of hydrogen formation is ~90% under light irradiation at λ = 405 nm with the participation of the composite of the optimal composition.</p>\",\"PeriodicalId\":796,\"journal\":{\"name\":\"Theoretical and Experimental Chemistry\",\"volume\":\"60 1\",\"pages\":\"31 - 40\"},\"PeriodicalIF\":0.7000,\"publicationDate\":\"2024-09-26\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Theoretical and Experimental Chemistry\",\"FirstCategoryId\":\"92\",\"ListUrlMain\":\"https://link.springer.com/article/10.1007/s11237-024-09806-8\",\"RegionNum\":4,\"RegionCategory\":\"化学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q4\",\"JCRName\":\"CHEMISTRY, MULTIDISCIPLINARY\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Theoretical and Experimental Chemistry","FirstCategoryId":"92","ListUrlMain":"https://link.springer.com/article/10.1007/s11237-024-09806-8","RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q4","JCRName":"CHEMISTRY, MULTIDISCIPLINARY","Score":null,"Total":0}
引用次数: 0

摘要

我们合成了基于结晶氮化碳(CGCN)和钛酸钴(CoTiO3)的纳米复合材料,并通过多种物理化学方法(电子显微镜、电子和红外分光光度法、发光光谱法和 X 射线衍射法)对其进行了表征。根据对所得结果的分析,特别是对发光特性和莫特-肖特基相关性的分析,可以得出结论:在 CGCN/CoTiO3 复合材料的形成过程中,各组分之间实现了光生电荷的 S 型分离。与 CGCN 的存在相比,这导致电子-空穴对的重组减少,水-乙醇溶液的氢气进化效率提高。在波长为 λ = 405 纳米的光照射下,在最佳成分的复合材料的参与下,氢形成的有效量子产率约为 90%。
本文章由计算机程序翻译,如有差异,请以英文原文为准。

摘要图片

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
Photocatalytic Activity of Nanoheterostructures C3N4/CoTiO3 in Hydrogen Evolution from Water–Alcohol Solutions Under Visible Light Irradiation

Nanocomposites based on crystalline carbon nitride (CGCN) and cobalt titanate (CoTiO3) have been synthesized and characterized by a number of physico-chemical methods (electron microscopy, electron and IR spectrophotometry, luminescence spectroscopy, and X-ray diffraction). It is concluded based on the analysis of the obtained results, in particular, the luminescence characteristics and Mott–Schottky dependences, that the S-scheme of separation of photogenerated charges between components is realized during the formation of CGCN/CoTiO3 composites. This leads to a decrease in the recombination of electron–hole pairs and an increase in the efficiency of hydrogen evolution from water–ethanol solutions when compared to the presence of CGCN. The effective quantum yield of hydrogen formation is ~90% under light irradiation at λ = 405 nm with the participation of the composite of the optimal composition.

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
Theoretical and Experimental Chemistry
Theoretical and Experimental Chemistry CHEMISTRY, MULTIDISCIPLINARY-
CiteScore
1.60
自引率
10.00%
发文量
30
审稿时长
6-12 weeks
期刊介绍: Theoretical and Experimental Chemistry is a journal for the rapid publication of research communications and reviews on modern problems of physical chemistry such as: a) physicochemical bases, principles, and methods for creation of novel processes, compounds, and materials; b) physicochemical principles of chemical process control, influence of external physical forces on chemical reactions; c) physical nanochemistry, nanostructures and nanomaterials, functional nanomaterials, size-dependent properties of materials.
期刊最新文献
Initiation of Radical-Chain Aerobic Oxidation of Cumene by Potassium Permanganate and N-Hydroxysuccinimide Spin-Orbit Interaction During the Activation of Molecular Oxygen by Oxidases and Cofactor-Free Oxygenases: A Review Electrochemical Properties of Composites Based on Carbon Nanomaterials: A Review High-Temperature Spiro-(1,1′)-Bipyrrolidinium Tetrafluoroborate-Based Organic Electrolytes for Supercapacitors Vapor-Phase Carbonylation of Methanol with the Obtaining of Acetyls on Solid-Phase Catalysts: A Review
×
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