{"title":"一种检测光激发纳米粒子产生的·OH自由基的新方法","authors":"Qing Dai, Deyu Wang, Chunwei Yuan","doi":"10.1016/S0968-5677(98)00053-4","DOIUrl":null,"url":null,"abstract":"<div><p>The Fenton reactions occur because of the generation of H<sub>2</sub>O<sub>2</sub> in the photoexcited independent TiO<sub>2</sub> systems or TiO<sub>2</sub>/SnO<sub>2</sub> coupled systems. The ·OH radicals in these reactions were indirectly measured by colorimetric method. According to the Lambert–Beer law, we obtained the qualitative and quantitative relationships between the amount of TiO<sub>2</sub> or TiO<sub>2</sub>/SnO<sub>2</sub> coupled particles and the amount of ·OH radicals produced by these systems. It provides a convenient procedure for making a thorough study on the photocatalytic mechanism of semiconductor nanoparticles, and in particular, to select highly efficient multicomponent semiconductor systems for photocatalysis.</p></div>","PeriodicalId":22050,"journal":{"name":"Supramolecular Science","volume":"5 5","pages":"Pages 469-473"},"PeriodicalIF":0.0000,"publicationDate":"1998-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/S0968-5677(98)00053-4","citationCount":"11","resultStr":"{\"title\":\"A novel method for detecting · OH radicals generated by photoexcited nanoparticles\",\"authors\":\"Qing Dai, Deyu Wang, Chunwei Yuan\",\"doi\":\"10.1016/S0968-5677(98)00053-4\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><p>The Fenton reactions occur because of the generation of H<sub>2</sub>O<sub>2</sub> in the photoexcited independent TiO<sub>2</sub> systems or TiO<sub>2</sub>/SnO<sub>2</sub> coupled systems. The ·OH radicals in these reactions were indirectly measured by colorimetric method. According to the Lambert–Beer law, we obtained the qualitative and quantitative relationships between the amount of TiO<sub>2</sub> or TiO<sub>2</sub>/SnO<sub>2</sub> coupled particles and the amount of ·OH radicals produced by these systems. It provides a convenient procedure for making a thorough study on the photocatalytic mechanism of semiconductor nanoparticles, and in particular, to select highly efficient multicomponent semiconductor systems for photocatalysis.</p></div>\",\"PeriodicalId\":22050,\"journal\":{\"name\":\"Supramolecular Science\",\"volume\":\"5 5\",\"pages\":\"Pages 469-473\"},\"PeriodicalIF\":0.0000,\"publicationDate\":\"1998-10-01\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"https://sci-hub-pdf.com/10.1016/S0968-5677(98)00053-4\",\"citationCount\":\"11\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Supramolecular Science\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://www.sciencedirect.com/science/article/pii/S0968567798000534\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"\",\"JCRName\":\"\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Supramolecular Science","FirstCategoryId":"1085","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0968567798000534","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
A novel method for detecting · OH radicals generated by photoexcited nanoparticles
The Fenton reactions occur because of the generation of H2O2 in the photoexcited independent TiO2 systems or TiO2/SnO2 coupled systems. The ·OH radicals in these reactions were indirectly measured by colorimetric method. According to the Lambert–Beer law, we obtained the qualitative and quantitative relationships between the amount of TiO2 or TiO2/SnO2 coupled particles and the amount of ·OH radicals produced by these systems. It provides a convenient procedure for making a thorough study on the photocatalytic mechanism of semiconductor nanoparticles, and in particular, to select highly efficient multicomponent semiconductor systems for photocatalysis.
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