{"title":"改进罗丹明 B 光催化降解的金属银修饰 SnO2-Zn2SnO4 立方体纳米材料","authors":"Shuyun Huang, Huanhuan Xu, Yue Ouyang, Yun Zhou, Junwei Xu, Jianjun Liu","doi":"10.1007/s11144-024-02682-2","DOIUrl":null,"url":null,"abstract":"<p>To modify the wide bandgap and intrinsic high recombination rate of photogenerated charge carriers of Zn<sub>2</sub>SnO<sub>4</sub> photocatalysts, Ag/SnO<sub>2</sub>–Zn<sub>2</sub>SnO<sub>4</sub> composites were prepared by depositing Ag nanoparticles onto cube-shaped SnO<sub>2</sub>–Zn<sub>2</sub>SnO<sub>4</sub> nanomaterials via photoreduction. The composites were characterized by XRD, SEM, EDS, TEM, XPS, and UV–Vis DRS, and their photocatalytic degradation effect on rhodamine B (Rh B) for different Ag loadings was studied, with 10%Ag/SnO<sub>2</sub>–Zn<sub>2</sub>SnO<sub>4</sub> showing the greatest effect. The UV photocatalytic degradation rate of the Rh B solution reaches 100% after 12 min of visible light irradiation and 91% after five cycles. The free radical trapping agent experiment indicated that the active substances of Ag/SnO<sub>2</sub>–Zn<sub>2</sub>SnO<sub>4</sub> photocatalysis are ·O<sub>2</sub><sup>−</sup> and h<sup>+</sup>. Further, photoelectrochemical tests revealed the higher electron–hole separation efficiency and faster charge transfer rate of the composites, enhancing the formation of photoproduced carriers and photocatalytic activity.</p>","PeriodicalId":1,"journal":{"name":"Accounts of Chemical Research","volume":null,"pages":null},"PeriodicalIF":16.4000,"publicationDate":"2024-07-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Metallic silver modified SnO2–Zn2SnO4 cube nanomaterials for improved photocatalytic degradation of rhodamine B\",\"authors\":\"Shuyun Huang, Huanhuan Xu, Yue Ouyang, Yun Zhou, Junwei Xu, Jianjun Liu\",\"doi\":\"10.1007/s11144-024-02682-2\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<p>To modify the wide bandgap and intrinsic high recombination rate of photogenerated charge carriers of Zn<sub>2</sub>SnO<sub>4</sub> photocatalysts, Ag/SnO<sub>2</sub>–Zn<sub>2</sub>SnO<sub>4</sub> composites were prepared by depositing Ag nanoparticles onto cube-shaped SnO<sub>2</sub>–Zn<sub>2</sub>SnO<sub>4</sub> nanomaterials via photoreduction. The composites were characterized by XRD, SEM, EDS, TEM, XPS, and UV–Vis DRS, and their photocatalytic degradation effect on rhodamine B (Rh B) for different Ag loadings was studied, with 10%Ag/SnO<sub>2</sub>–Zn<sub>2</sub>SnO<sub>4</sub> showing the greatest effect. The UV photocatalytic degradation rate of the Rh B solution reaches 100% after 12 min of visible light irradiation and 91% after five cycles. The free radical trapping agent experiment indicated that the active substances of Ag/SnO<sub>2</sub>–Zn<sub>2</sub>SnO<sub>4</sub> photocatalysis are ·O<sub>2</sub><sup>−</sup> and h<sup>+</sup>. Further, photoelectrochemical tests revealed the higher electron–hole separation efficiency and faster charge transfer rate of the composites, enhancing the formation of photoproduced carriers and photocatalytic activity.</p>\",\"PeriodicalId\":1,\"journal\":{\"name\":\"Accounts of Chemical Research\",\"volume\":null,\"pages\":null},\"PeriodicalIF\":16.4000,\"publicationDate\":\"2024-07-30\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Accounts of Chemical Research\",\"FirstCategoryId\":\"92\",\"ListUrlMain\":\"https://doi.org/10.1007/s11144-024-02682-2\",\"RegionNum\":1,\"RegionCategory\":\"化学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q1\",\"JCRName\":\"CHEMISTRY, MULTIDISCIPLINARY\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Accounts of Chemical Research","FirstCategoryId":"92","ListUrlMain":"https://doi.org/10.1007/s11144-024-02682-2","RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"CHEMISTRY, MULTIDISCIPLINARY","Score":null,"Total":0}
Metallic silver modified SnO2–Zn2SnO4 cube nanomaterials for improved photocatalytic degradation of rhodamine B
To modify the wide bandgap and intrinsic high recombination rate of photogenerated charge carriers of Zn2SnO4 photocatalysts, Ag/SnO2–Zn2SnO4 composites were prepared by depositing Ag nanoparticles onto cube-shaped SnO2–Zn2SnO4 nanomaterials via photoreduction. The composites were characterized by XRD, SEM, EDS, TEM, XPS, and UV–Vis DRS, and their photocatalytic degradation effect on rhodamine B (Rh B) for different Ag loadings was studied, with 10%Ag/SnO2–Zn2SnO4 showing the greatest effect. The UV photocatalytic degradation rate of the Rh B solution reaches 100% after 12 min of visible light irradiation and 91% after five cycles. The free radical trapping agent experiment indicated that the active substances of Ag/SnO2–Zn2SnO4 photocatalysis are ·O2− and h+. Further, photoelectrochemical tests revealed the higher electron–hole separation efficiency and faster charge transfer rate of the composites, enhancing the formation of photoproduced carriers and photocatalytic activity.
期刊介绍：
Accounts of Chemical Research presents short, concise and critical articles offering easy-to-read overviews of basic research and applications in all areas of chemistry and biochemistry. These short reviews focus on research from the author’s own laboratory and are designed to teach the reader about a research project. In addition, Accounts of Chemical Research publishes commentaries that give an informed opinion on a current research problem. Special Issues online are devoted to a single topic of unusual activity and significance.
Accounts of Chemical Research replaces the traditional article abstract with an article "Conspectus." These entries synopsize the research affording the reader a closer look at the content and significance of an article. Through this provision of a more detailed description of the article contents, the Conspectus enhances the article's discoverability by search engines and the exposure for the research.
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