| TiO2修饰微流控芯片反应器的研制及应用 |
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| 引用本文： | 叶美英,周刚,李宝兴,刘金华.TiO2修饰微流控芯片反应器的研制及应用[J].杭州师范大学学报(自然科学版),2012(1):1-6. |
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| 作者姓名： | 叶美英 周刚 李宝兴 刘金华 |
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| 作者单位： | 杭州师范大学材料与化学化工学院;杭州师范大学理学院;杭州师范大学微流控芯片研究所;杭州师范大学有机硅化学及材料技术教育部重点实验室 |
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| 基金项目： | 浙江省自然科学基金项目(Y6100098);浙江省科技厅分析测试科技计划项目(2011C37018) |
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| 摘 要： | 研究了微流控芯片中纳米TiO2薄膜的制备方法.采用粉末溶胶法在通道中涂覆多孔纳米TiO2涂层,获得催化活性高、稳定性好的光催化微反应器.以UV-LED为光源,在光催化微反应器中进行富里酸的光催化降解条件试验和苯甲醛与乙醇的光催化有机反应,优化了反应条件.在光照强度为120 mW/cm2,流速100μL/h,H2O2质量分数2%,富里酸初始pH值为1,光反应时间仅为192s的条件下,水样中2.5g/L富里酸降解率可达90%.在该微反应器中进行苯甲醛与乙醇的光催化反应,反应时间为96s,光强为0.8mW/cm2时,苯甲醇和氢化苯偶姻的最大产率分别为8.5%和65.2%.
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| 关 键 词： | 微反应器 TiO2涂层 光催化降解 光催化反应 |
Fabrication and Application of TiO2 Modified Microfluidic Chip Micro-Reactor |
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| Authors: | YE Mei-ying ZHOU Gang LI Bao-xing LIU Jin-hua |
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| Institution: | 1.College of Material,Chemistry and Chemical Engineering,Hangzhou Normal University,Hangzhou 310036,China; 2.College of Science,Hangzhou Normal University,Hangzhou 310036,China;3.Key Laboratory of Organosilicon Chemistry and Material Technology,Ministry of Education,Hangzhou Normal University,Hangzhou 310012,China; 4.Microfluidic Chip Institute,Hangzhou Normal University,Hangzhou 310036,China) |
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| Abstract: | The paper researched on the preparation method of nanosized TiO2 film.The experiment applied TiO2 film micro-fluidic chip in the channel by powder sol method,and obtained a photocatalytic micro-reactor with high catalytic activity and good stability.Using UV-LED as the light source,the photocatalytic degradation of fulvic acid and the photocatalytic organic reaction of benzaldehyde with ethanol were proceeded in the micro-reactor.Under the conditions of incident light intensity 120 mW/cm2,flow rate 100 μL/h,H2O2 concentration 2%,fulvic acid initial pH 1 and photoreaction time 192 s,the degradation rate of 2.5 g/L fulvic acid could reach 90%.When the reaction time of the photocatalytic reaction of benzaldehyde and ethanol in the micro-reactor is 96 s,and light intensity is 0.8 mW/cm2,the yield ratios of benzyl alcohol and hydrobenzoin are 8.5% and 65.2% respectively. |
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| Keywords: | micro-reactor TiO2 film photocatalytic degradation photocatalytic reaction |
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