{"title":"Synthesis and Photocatalytic Activity of Cation-Doped Titanium Oxynitrides (Ti2.85−xMxO4N, M = Zn, Co, Cu)","authors":"Qijing Gao, Wenyan Shi, Wenqian Chen","doi":"10.1039/d4dt02378a","DOIUrl":null,"url":null,"abstract":"The utilization of visible light in photocatalytic semiconductors is restricted by the presence of the wide energy bandgap and fast electron-hole pair recombination. This study aims to address this limitation by synthesizing nitrogen- and cation-doped Cs0.68Ti1.83O4 at varying temperatures, and subsequently analyzing the photocatalytic performance and mechanism. The optical experimental findings indicate that the co-doping of N/M (where M represents Zn, Co, or Cu) can considerably decrease the energy bandgap of Cs0.68Ti1.83O4 by regulating the energy band position and effectively suppressing the recombination of photogenerated carriers. Notably, at a temperature of 600 °C, the N/Cu co-doped Cs0.68Ti1.83O4 exhibits the smallest energy bandgap of 1.98 eV, thereby demonstrating superior photocatalytic performance. The photocatalytic degradation test of pollutants shows that the degrading efficiency of methylene blue solution in 120 minutes under light was 84%, which is the result of the interaction between ·OH and ·O2−. This study provides new possibilities for the study of co-doped modified photocatalytic materials.","PeriodicalId":71,"journal":{"name":"Dalton Transactions","volume":null,"pages":null},"PeriodicalIF":3.5000,"publicationDate":"2024-09-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Dalton Transactions","FirstCategoryId":"92","ListUrlMain":"https://doi.org/10.1039/d4dt02378a","RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"CHEMISTRY, INORGANIC & NUCLEAR","Score":null,"Total":0}
引用次数: 0
Abstract
The utilization of visible light in photocatalytic semiconductors is restricted by the presence of the wide energy bandgap and fast electron-hole pair recombination. This study aims to address this limitation by synthesizing nitrogen- and cation-doped Cs0.68Ti1.83O4 at varying temperatures, and subsequently analyzing the photocatalytic performance and mechanism. The optical experimental findings indicate that the co-doping of N/M (where M represents Zn, Co, or Cu) can considerably decrease the energy bandgap of Cs0.68Ti1.83O4 by regulating the energy band position and effectively suppressing the recombination of photogenerated carriers. Notably, at a temperature of 600 °C, the N/Cu co-doped Cs0.68Ti1.83O4 exhibits the smallest energy bandgap of 1.98 eV, thereby demonstrating superior photocatalytic performance. The photocatalytic degradation test of pollutants shows that the degrading efficiency of methylene blue solution in 120 minutes under light was 84%, which is the result of the interaction between ·OH and ·O2−. This study provides new possibilities for the study of co-doped modified photocatalytic materials.
期刊介绍:
Dalton Transactions is a journal for all areas of inorganic chemistry, which encompasses the organometallic, bioinorganic and materials chemistry of the elements, with applications including synthesis, catalysis, energy conversion/storage, electrical devices and medicine. Dalton Transactions welcomes high-quality, original submissions in all of these areas and more, where the advancement of knowledge in inorganic chemistry is significant.