{"title":"Ag-TiO2/SiO2单体增强过氧单硫酸盐光催化降解苯酚","authors":"Thi-Ngoc-Suong Ho","doi":"10.1007/s10563-025-09448-3","DOIUrl":null,"url":null,"abstract":"<div><p>Ag-TiO<sub>2</sub>/SiO<sub>2</sub> monolith photocatalyst was synthesized by a simple sol-gel and dip-coating method with AgNO<sub>3</sub> as Ag source, titanium <i>n</i>-butoxide and tetraethoxysilane as Si source. Photocatalytic activities of the synthesized Ag-TiO<sub>2</sub>/SiO<sub>2</sub> monolith were evaluated through phenol degradation under UVA light irradiations. EDX-mapping verified that the Ag nanoparticles were successfully incorporated into the photocatalyst and evenly deposited on the surface of TiO<sub>2</sub>/SiO<sub>2</sub>. The surface and cross-sectional SEM images of the monolith material confirmed the successful coating of Ag(3%)-TiO<sub>2</sub>/ SiO<sub>2</sub> catalyst on the monolith surface (Ag(3%)-TS05/S/M). The study showed that the peroxymonosulfate (PMS)/Ag-TiO<sub>2</sub>/SiO<sub>2</sub> monolith with appropriate Ag doping exhibited excellent activity under UVA light irradiation, was easy to separate from contaminants, and had good reusability. After four rounds of recycling, about 92% of the phenol was removed within. 240 min by the PMS/Ag(3%)-TiO<sub>2</sub>/SiO<sub>2</sub> monolith system with a sulfate radical as the main oxidation species. A new bond between SiO<sub>2</sub> and TiO<sub>2</sub> was formed to prevent TiO<sub>2</sub> removal during wastewater treatment. The performance of our Ag-TiO<sub>2</sub>/SiO<sub>2</sub> monolith with the presence of PMS makes it highly suitable for practical application in treating wastewater contaminated with phenol pollutants.</p></div>","PeriodicalId":509,"journal":{"name":"Catalysis Surveys from Asia","volume":"29 2","pages":"185 - 193"},"PeriodicalIF":2.1000,"publicationDate":"2025-02-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Enhanced Photocatalytic Activation of Peroxymonosulfate Using Ag-TiO2/SiO2 Monolith for Phenol Degradation\",\"authors\":\"Thi-Ngoc-Suong Ho\",\"doi\":\"10.1007/s10563-025-09448-3\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><p>Ag-TiO<sub>2</sub>/SiO<sub>2</sub> monolith photocatalyst was synthesized by a simple sol-gel and dip-coating method with AgNO<sub>3</sub> as Ag source, titanium <i>n</i>-butoxide and tetraethoxysilane as Si source. Photocatalytic activities of the synthesized Ag-TiO<sub>2</sub>/SiO<sub>2</sub> monolith were evaluated through phenol degradation under UVA light irradiations. EDX-mapping verified that the Ag nanoparticles were successfully incorporated into the photocatalyst and evenly deposited on the surface of TiO<sub>2</sub>/SiO<sub>2</sub>. The surface and cross-sectional SEM images of the monolith material confirmed the successful coating of Ag(3%)-TiO<sub>2</sub>/ SiO<sub>2</sub> catalyst on the monolith surface (Ag(3%)-TS05/S/M). The study showed that the peroxymonosulfate (PMS)/Ag-TiO<sub>2</sub>/SiO<sub>2</sub> monolith with appropriate Ag doping exhibited excellent activity under UVA light irradiation, was easy to separate from contaminants, and had good reusability. After four rounds of recycling, about 92% of the phenol was removed within. 240 min by the PMS/Ag(3%)-TiO<sub>2</sub>/SiO<sub>2</sub> monolith system with a sulfate radical as the main oxidation species. A new bond between SiO<sub>2</sub> and TiO<sub>2</sub> was formed to prevent TiO<sub>2</sub> removal during wastewater treatment. The performance of our Ag-TiO<sub>2</sub>/SiO<sub>2</sub> monolith with the presence of PMS makes it highly suitable for practical application in treating wastewater contaminated with phenol pollutants.</p></div>\",\"PeriodicalId\":509,\"journal\":{\"name\":\"Catalysis Surveys from Asia\",\"volume\":\"29 2\",\"pages\":\"185 - 193\"},\"PeriodicalIF\":2.1000,\"publicationDate\":\"2025-02-28\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Catalysis Surveys from Asia\",\"FirstCategoryId\":\"92\",\"ListUrlMain\":\"https://link.springer.com/article/10.1007/s10563-025-09448-3\",\"RegionNum\":4,\"RegionCategory\":\"化学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q3\",\"JCRName\":\"CHEMISTRY, PHYSICAL\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Catalysis Surveys from Asia","FirstCategoryId":"92","ListUrlMain":"https://link.springer.com/article/10.1007/s10563-025-09448-3","RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"CHEMISTRY, PHYSICAL","Score":null,"Total":0}
Enhanced Photocatalytic Activation of Peroxymonosulfate Using Ag-TiO2/SiO2 Monolith for Phenol Degradation
Ag-TiO2/SiO2 monolith photocatalyst was synthesized by a simple sol-gel and dip-coating method with AgNO3 as Ag source, titanium n-butoxide and tetraethoxysilane as Si source. Photocatalytic activities of the synthesized Ag-TiO2/SiO2 monolith were evaluated through phenol degradation under UVA light irradiations. EDX-mapping verified that the Ag nanoparticles were successfully incorporated into the photocatalyst and evenly deposited on the surface of TiO2/SiO2. The surface and cross-sectional SEM images of the monolith material confirmed the successful coating of Ag(3%)-TiO2/ SiO2 catalyst on the monolith surface (Ag(3%)-TS05/S/M). The study showed that the peroxymonosulfate (PMS)/Ag-TiO2/SiO2 monolith with appropriate Ag doping exhibited excellent activity under UVA light irradiation, was easy to separate from contaminants, and had good reusability. After four rounds of recycling, about 92% of the phenol was removed within. 240 min by the PMS/Ag(3%)-TiO2/SiO2 monolith system with a sulfate radical as the main oxidation species. A new bond between SiO2 and TiO2 was formed to prevent TiO2 removal during wastewater treatment. The performance of our Ag-TiO2/SiO2 monolith with the presence of PMS makes it highly suitable for practical application in treating wastewater contaminated with phenol pollutants.
期刊介绍：
Early dissemination of important findings from Asia which may lead to new concepts in catalyst design is the main aim of this journal. Rapid, invited, short reviews and perspectives from academia and industry will constitute the major part of Catalysis Surveys from Asia . Surveys of recent progress and activities in catalytic science and technology and related areas in Asia will be covered regularly as well. We would appreciate critical comments from colleagues throughout the world about articles in Catalysis Surveys from Asia . If requested and thought appropriate, the comments will be included in the journal. We will be very happy if this journal stimulates global communication between scientists and engineers in the world of catalysis.
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