{"title":"High photocatalytic performance of ZnGa2O4/Ga2O3 double-shell hollow sphere structures prepared via a one-step hydrothermal method†","authors":"Zeyu Yang, Jizhou Yang and Haibo Fan","doi":"10.1039/D5MA00179J","DOIUrl":null,"url":null,"abstract":"<p >In this study, photocatalytic degradation of rhodamine B (RhB) using one-step hydrothermally prepared ZnGa<small><sub>2</sub></small>O<small><sub>4</sub></small>/Ga<small><sub>2</sub></small>O<small><sub>3</sub></small> heterojunctions with double-shell hollow sphere structures was investigated. It was found that this structure greatly improved the photocatalytic performance through the formation of an S-scheme heterojunction at the interface between ZnGa<small><sub>2</sub></small>O<small><sub>4</sub></small> and Ga<small><sub>2</sub></small>O<small><sub>3</sub></small>. By optimizing the feed ratio, a maximum RhB degradation rate of 0.1133 min<small><sup>−1</sup></small> was obtained, which was nearly 2 times higher than that of the Ga<small><sub>2</sub></small>O<small><sub>3</sub></small> monomer photocatalyst, 5 times higher than that of the ZnGa<small><sub>2</sub></small>O<small><sub>4</sub></small> monomer photocatalyst, and 96 times higher than the RhB self-degradation rate. Capture experiments showed that h<small><sup>+</sup></small> played a key role in the efficient decomposition of RhB reactive groups. This study provides a new idea and a simple preparation method for the novel ZnGa<small><sub>2</sub></small>O<small><sub>4</sub></small>/Ga<small><sub>2</sub></small>O<small><sub>3</sub></small> S-scheme heterojunctions for efficient photocatalytic degradation of organic pollutants.</p>","PeriodicalId":18242,"journal":{"name":"Materials Advances","volume":" 12","pages":" 4096-4105"},"PeriodicalIF":4.7000,"publicationDate":"2025-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.rsc.org/en/content/articlepdf/2025/ma/d5ma00179j?page=search","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Materials Advances","FirstCategoryId":"1085","ListUrlMain":"https://pubs.rsc.org/en/content/articlelanding/2025/ma/d5ma00179j","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"MATERIALS SCIENCE, MULTIDISCIPLINARY","Score":null,"Total":0}
引用次数: 0
Abstract
In this study, photocatalytic degradation of rhodamine B (RhB) using one-step hydrothermally prepared ZnGa2O4/Ga2O3 heterojunctions with double-shell hollow sphere structures was investigated. It was found that this structure greatly improved the photocatalytic performance through the formation of an S-scheme heterojunction at the interface between ZnGa2O4 and Ga2O3. By optimizing the feed ratio, a maximum RhB degradation rate of 0.1133 min−1 was obtained, which was nearly 2 times higher than that of the Ga2O3 monomer photocatalyst, 5 times higher than that of the ZnGa2O4 monomer photocatalyst, and 96 times higher than the RhB self-degradation rate. Capture experiments showed that h+ played a key role in the efficient decomposition of RhB reactive groups. This study provides a new idea and a simple preparation method for the novel ZnGa2O4/Ga2O3 S-scheme heterojunctions for efficient photocatalytic degradation of organic pollutants.