{"title":"硫酸浸渍法光催化降解罗丹明B的研究","authors":"Xuemin Yan, P. Mei, Lin Gao","doi":"10.1515/jaots-2016-0106","DOIUrl":null,"url":null,"abstract":"Abstract Sulfate modified SiO2-TiO2 photocatalysts with different SO42− loadings were prepared by incipient-wetness impregnation method using H2SO4 solution with various concentrations. The as-prepared SO42−/SiO2-TiO2 samples were characterized with X-ray diffraction (XRD), scanning electron microscopy (SEM), Brunauer- Emmett-Teller (BET) method, Uv-vis diffuse reflectance spectroscopy (DRS), X-ray photoelectron spectroscopy (XPS) and terephthalic acid photoluminescence probing technique (TA-PL), respectively. The photocatalytic activity of the as-prepared samples was evaluated by photocatalytic degradation of rhodamine B under ultraviolet light irradiation. The effects of H2SO4 solution concentration on the structure, morphology, surface properties and photocatalytic activity of SO42−/SiO2-TiO2 samples were investigated. The results indicated that the catalyst prepared with 4 mol/L H2SO4 solution, it showed the highest photocatalytic activity. The higher photocatalytic activity could be attributed to the improved surface properties and the enhanced separation rate of photoinduced electron-hole pairs.","PeriodicalId":14870,"journal":{"name":"Journal of Advanced Oxidation Technologies","volume":"21 1","pages":"52 - 58"},"PeriodicalIF":0.0000,"publicationDate":"2016-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Photocatalytic Degradation of Rhodamine B over Sulfated SiO2-TiO2 Composite by Sulphuric Acid Impregnation Method\",\"authors\":\"Xuemin Yan, P. Mei, Lin Gao\",\"doi\":\"10.1515/jaots-2016-0106\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"Abstract Sulfate modified SiO2-TiO2 photocatalysts with different SO42− loadings were prepared by incipient-wetness impregnation method using H2SO4 solution with various concentrations. The as-prepared SO42−/SiO2-TiO2 samples were characterized with X-ray diffraction (XRD), scanning electron microscopy (SEM), Brunauer- Emmett-Teller (BET) method, Uv-vis diffuse reflectance spectroscopy (DRS), X-ray photoelectron spectroscopy (XPS) and terephthalic acid photoluminescence probing technique (TA-PL), respectively. The photocatalytic activity of the as-prepared samples was evaluated by photocatalytic degradation of rhodamine B under ultraviolet light irradiation. The effects of H2SO4 solution concentration on the structure, morphology, surface properties and photocatalytic activity of SO42−/SiO2-TiO2 samples were investigated. The results indicated that the catalyst prepared with 4 mol/L H2SO4 solution, it showed the highest photocatalytic activity. The higher photocatalytic activity could be attributed to the improved surface properties and the enhanced separation rate of photoinduced electron-hole pairs.\",\"PeriodicalId\":14870,\"journal\":{\"name\":\"Journal of Advanced Oxidation Technologies\",\"volume\":\"21 1\",\"pages\":\"52 - 58\"},\"PeriodicalIF\":0.0000,\"publicationDate\":\"2016-01-01\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Journal of Advanced Oxidation Technologies\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://doi.org/10.1515/jaots-2016-0106\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q\",\"JCRName\":\"Chemistry\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of Advanced Oxidation Technologies","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1515/jaots-2016-0106","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q","JCRName":"Chemistry","Score":null,"Total":0}
Photocatalytic Degradation of Rhodamine B over Sulfated SiO2-TiO2 Composite by Sulphuric Acid Impregnation Method
Abstract Sulfate modified SiO2-TiO2 photocatalysts with different SO42− loadings were prepared by incipient-wetness impregnation method using H2SO4 solution with various concentrations. The as-prepared SO42−/SiO2-TiO2 samples were characterized with X-ray diffraction (XRD), scanning electron microscopy (SEM), Brunauer- Emmett-Teller (BET) method, Uv-vis diffuse reflectance spectroscopy (DRS), X-ray photoelectron spectroscopy (XPS) and terephthalic acid photoluminescence probing technique (TA-PL), respectively. The photocatalytic activity of the as-prepared samples was evaluated by photocatalytic degradation of rhodamine B under ultraviolet light irradiation. The effects of H2SO4 solution concentration on the structure, morphology, surface properties and photocatalytic activity of SO42−/SiO2-TiO2 samples were investigated. The results indicated that the catalyst prepared with 4 mol/L H2SO4 solution, it showed the highest photocatalytic activity. The higher photocatalytic activity could be attributed to the improved surface properties and the enhanced separation rate of photoinduced electron-hole pairs.
期刊介绍：
The Journal of advanced oxidation technologies (AOTs) has been providing an international forum that accepts papers describing basic research and practical applications of these technologies. The Journal has been publishing articles in the form of critical reviews and research papers focused on the science and engineering of AOTs for water, air and soil treatment. Due to the enormous progress in the applications of various chemical and bio-oxidation and reduction processes, the scope of the Journal is now expanded to include submission in these areas so that high quality submission from industry would also be considered for publication. Specifically, the Journal is soliciting submission in the following areas (alphabetical order): -Advanced Oxidation Nanotechnologies -Bio-Oxidation and Reduction Processes -Catalytic Oxidation -Chemical Oxidation and Reduction Processes -Electrochemical Oxidation -Electrohydraulic Discharge, Cavitation & Sonolysis -Electron Beam & Gamma Irradiation -New Photocatalytic Materials and processes -Non-Thermal Plasma -Ozone-based AOTs -Photochemical Degradation Processes -Sub- and Supercritical Water Oxidation -TiO2 Photocatalytic Redox Processes -UV- and Solar Light-based AOTs -Water-Energy (and Food) Nexus of AOTs
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