具有可见光响应混晶TiO_2光催化剂的制备及光催化性能研究

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英文篇名：Preparation and photocatalyst properties of mixed-phase TiO_2 with visible light response 作者：石凯 ; 韩丽花 ; 李孟宇 ; 李巧玲 英文作者：SHI Kai;HAN Li-hua;LI Meng-yu;LI Qiao-ling;School of Science,North University of China; 关键词：TiO_2 ; 混晶 ; 水热法 ; 光催化 ; 荧光 英文关键词：TiO_2;;mixed crystal;;hydrothermal method;;photocatalysis;;fluorescence 中文刊名：SXHG 英文刊名：Applied Chemical Industry 机构：中北大学理学院; 出版日期：2018-12-29 10:35 出版单位：应用化工 年：2019 期：v.48;No.325 基金：山西省回国留学人员科研资助项目(2014-重点6);; 中北大学研究生科技立项(20171447) 语种：中文; 页：SXHG201903021 页数：4 CN：03 ISSN：61-1370/TQ 分类号：86-89

摘要

采用一步水热法制备锐钛矿/金红石TiO_2混合晶体,探讨锐钛矿相和金红石相比例对光催化降解罗丹明B的性能影响以及混晶TiO_2的光催化机理。结果表明,当金红石相的比例为20%,TiO_2混晶在紫外辐射和太阳光下,使初始浓度10 mg/L的罗丹明B完全降解的时间分别为50 min和150 min;活性物捕捉实验证明,·OH为催化体系中的关键活性物质。
        Mixed crystal TiO_2(anatase/rutile) was prepared by one step hydrothermal method.The effects of the proportion of anatase and rutile on the performance of photocatalytic degradation of Rh B and the photocatalytic mechanism of mixed crystal TiO_2 were investigated with Rhodamine B as a simulated pollutant.Results show that,when the rate of rutile phase is 20%,the time that Rhodamine B(～10 mg/L) completely degraded in under ultraviolet light irradiation(～60 W) and natural light is 50 min and 150 min,respectively.· OH is the key active substance in the catalytic system.

引文

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