{"title":"Sn3O4/g-C3N4复合材料在可见光下增强光催化活性的构建","authors":"Vu Hoang Huong","doi":"10.25073/2588-1124/vnumap.4761","DOIUrl":null,"url":null,"abstract":"The Sn3O4/g-C3N4 composites were produced by an annealing mixture of g-C3N4 and Sn3O4, which were prepared by calcining urea and hydrothermally treating of SnCl2 solution, respectively. Chacterization of the samples was investigated by powder X-ray diffraction (XRD), Scanning electron microscope (SEM), Fourier transform infrared spectroscopy (FTIR), Photoluminescence (PL) and UV-Vis spectra. Studying the degradation of Rhodamine B (RhB) in the presence of visible light showed that the combination of Sn3O4 and g-C3N4 has an enhanced ability in the photocatalysis in comparison with the individual components. From kinetic investigations of RhB degradation, it is found that the SCN25 catalyst has the highest rate constant of 18.14 (min-1 x 103), which was about 11.4 times larger than that of pure g-C3N4. It is possible to explain the improved photocatalytic activity of Sn3O4/g-C3N4 composites by using the Z-scheme pathway. \n \n \n ","PeriodicalId":303178,"journal":{"name":"VNU Journal of Science: Mathematics - Physics","volume":"92 1","pages":"0"},"PeriodicalIF":0.0000,"publicationDate":"2023-03-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Construction of Sn3O4/g-C3N4 Composite with Enhanced Photocatalytic Activities Under Visible Light Irradiation\",\"authors\":\"Vu Hoang Huong\",\"doi\":\"10.25073/2588-1124/vnumap.4761\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"The Sn3O4/g-C3N4 composites were produced by an annealing mixture of g-C3N4 and Sn3O4, which were prepared by calcining urea and hydrothermally treating of SnCl2 solution, respectively. Chacterization of the samples was investigated by powder X-ray diffraction (XRD), Scanning electron microscope (SEM), Fourier transform infrared spectroscopy (FTIR), Photoluminescence (PL) and UV-Vis spectra. Studying the degradation of Rhodamine B (RhB) in the presence of visible light showed that the combination of Sn3O4 and g-C3N4 has an enhanced ability in the photocatalysis in comparison with the individual components. From kinetic investigations of RhB degradation, it is found that the SCN25 catalyst has the highest rate constant of 18.14 (min-1 x 103), which was about 11.4 times larger than that of pure g-C3N4. It is possible to explain the improved photocatalytic activity of Sn3O4/g-C3N4 composites by using the Z-scheme pathway. \\n \\n \\n \",\"PeriodicalId\":303178,\"journal\":{\"name\":\"VNU Journal of Science: Mathematics - Physics\",\"volume\":\"92 1\",\"pages\":\"0\"},\"PeriodicalIF\":0.0000,\"publicationDate\":\"2023-03-27\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"VNU Journal of Science: Mathematics - Physics\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://doi.org/10.25073/2588-1124/vnumap.4761\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"\",\"JCRName\":\"\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"VNU Journal of Science: Mathematics - Physics","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.25073/2588-1124/vnumap.4761","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 0
摘要
将g-C3N4和Sn3O4分别通过煅烧尿素和水热处理SnCl2溶液进行退火，制备了Sn3O4/g-C3N4复合材料。采用粉末x射线衍射(XRD)、扫描电镜(SEM)、傅里叶变换红外光谱(FTIR)、光致发光(PL)和紫外可见光谱(UV-Vis)对样品进行了表征。在可见光下对罗丹明B (Rhodamine B, RhB)的降解研究表明，Sn3O4与g-C3N4的组合比单独的组分具有更强的光催化能力。通过对RhB降解动力学的研究，发现SCN25催化剂具有最高的降解速率常数，为18.14 (min-1 x 103)，是纯g-C3N4的11.4倍。用z -图式途径可以解释Sn3O4/g-C3N4复合材料光催化活性的提高。
Construction of Sn3O4/g-C3N4 Composite with Enhanced Photocatalytic Activities Under Visible Light Irradiation
The Sn3O4/g-C3N4 composites were produced by an annealing mixture of g-C3N4 and Sn3O4, which were prepared by calcining urea and hydrothermally treating of SnCl2 solution, respectively. Chacterization of the samples was investigated by powder X-ray diffraction (XRD), Scanning electron microscope (SEM), Fourier transform infrared spectroscopy (FTIR), Photoluminescence (PL) and UV-Vis spectra. Studying the degradation of Rhodamine B (RhB) in the presence of visible light showed that the combination of Sn3O4 and g-C3N4 has an enhanced ability in the photocatalysis in comparison with the individual components. From kinetic investigations of RhB degradation, it is found that the SCN25 catalyst has the highest rate constant of 18.14 (min-1 x 103), which was about 11.4 times larger than that of pure g-C3N4. It is possible to explain the improved photocatalytic activity of Sn3O4/g-C3N4 composites by using the Z-scheme pathway.
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