{"title":"Degradation of catechol on BiOCl: charge transfer complex formation and photoactivity","authors":"Min Li, Yongsheng Jin, Jing Su, Jingxiang Shen","doi":"10.1515/jaots-2016-0193","DOIUrl":null,"url":null,"abstract":"Abstract: BiOCl photocatalysts were successfully synthesized using Bi(NO3)3·5H2O and KCl as raw materials. The physical properties and optical absorption performances of as-prepared samples were characterized through XRD, SEM, TEM, XPS and DRS. Contrary to common expectations, catechol could be degraded with visible light on as-synthesized BiOCl. The observed visible-light induced activity could be due to the formation of charge transfer complex, confirmed by DRS, FTIR, Raman, and XPS. About 65.0 % of catechol was degraded after 120 min light irradiation, and the rate constant, k, is 9.04×10–3 min–1. The addition of L-ascorbic acid inhibited the degradation of catechol, indicating •O2– being the main active species in catechol redox reaction. Finally, the degradation mechanism of catechol under visible light irradiation with BiOCl was proposed.","PeriodicalId":14870,"journal":{"name":"Journal of Advanced Oxidation Technologies","volume":"28 1","pages":""},"PeriodicalIF":0.0000,"publicationDate":"2017-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"5","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of Advanced Oxidation Technologies","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1515/jaots-2016-0193","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q","JCRName":"Chemistry","Score":null,"Total":0}
引用次数: 5
Abstract
Abstract: BiOCl photocatalysts were successfully synthesized using Bi(NO3)3·5H2O and KCl as raw materials. The physical properties and optical absorption performances of as-prepared samples were characterized through XRD, SEM, TEM, XPS and DRS. Contrary to common expectations, catechol could be degraded with visible light on as-synthesized BiOCl. The observed visible-light induced activity could be due to the formation of charge transfer complex, confirmed by DRS, FTIR, Raman, and XPS. About 65.0 % of catechol was degraded after 120 min light irradiation, and the rate constant, k, is 9.04×10–3 min–1. The addition of L-ascorbic acid inhibited the degradation of catechol, indicating •O2– being the main active species in catechol redox reaction. Finally, the degradation mechanism of catechol under visible light irradiation with BiOCl was proposed.
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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