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当前位置: 首页 > 文章 > 静电场下纳米TiO_2光降解甲基红的研究 安徽科技学院学报 2020,34 (1) 77-81
Position: Home > Articles > Study on Photodegradation of Methyl Red by Nano-TiO_2 Under Electrostatic Field Journal of Anhui Science and Technology University 2020,34 (1) 77-81

静电场下纳米TiO_2光降解甲基红的研究

作  者：
黄圆圆;冯纪章;郭雨;陈君华;肖体喜;谢五喜;郑萌萌;金晶
单  位：
关键词：
氧化钛;光催化;操作条件;降解甲基红
摘  要：
目的:研究转速、催化剂浓度和偏置电压3个指标参数对氧化钛(P25)光催化性能的影响。方法:采用X射线衍射和紫外-可见光漫反射光谱分析氧化钛的晶相和带隙,并通过测量紫外光照射下模拟污染物甲基红(MR)的降解速率,评价转速、催化剂浓度和偏置电压3个指标参数对氧化钛光催化活性的影响。结果:TiO_2具有混合晶相,光学带隙为3.06 eV;最优操作反应条件为甲基红浓度20 mg/L,转速800 r/min,偏置电压分别为+2 V和-8 V。结论:适当的操作条件能够有效提高氧化钛的光催化效率。
译  名：
Study on Photodegradation of Methyl Red by Nano-TiO_2 Under Electrostatic Field
作  者：
HUANG Yuanyuan;FENG Jizhang;GUO Yu;CHEN Junhua;XIAO Tixi;XIE Wuxi;ZHENG Mengmeng;JIN Jing;College of Chemistry and Chemical Engineering, Anhui Science and Technology University;Sedin Engineering Co., Ltd.;Postdoctoral Research Station, Anhui Deli Household Glass Co., Ltd.;Xi'an Modern Chemistry Research Institute;
关键词：
Titanium dioxide;;Photocatalytic degradation;;Operating condition;;Photodegradation of methgl red
摘  要：
Objective:The effects of rotational speed, catalyst concentration and bias voltage on photocatalytic performance of TiO_2(P25) were studied. Methods: The crystal phase and band gap of titanium oxide were determined by using X-ray diffraction and ultraviolet-visible spectroscopy from diffuse reflectance measurements, and the effects of rotational speed, catalyst concentration and bias voltage on the photocatalytic activity of TiO_2 were evaluated by measuring the degradation rate of the simulated pollutant methyl red(MR) under ultraviolet light.Results: TiO_2 is a mixed crystal phase with an optical band gap of 3.06 eV. The optimal conditions are as follows:concentration of MR is 20 mg/L, 800 revolution sperminute, positivebias +2 V and negativebias-8 V. Conclusion: The photocatalytic efficiency of TiO_2 can be improved by proper operating conditions.

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