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溶胶-凝胶法制备TiO_2/活性炭复合体的影响因素 被引量:11
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作者 李佑稷 李效东 +1 位作者 李君文 尹静 《硅酸盐学报》 EI CAS CSCD 北大核心 2005年第3期340-345,共6页
采用溶胶凝胶法制备纳米TiO2/活性炭(activecarbon,AC)复合体。以无水乙醇为溶剂,蒸馏水、浓盐酸及钛酸丁酯的用量为实验 参数,考察其对TiO2溶胶粘度的影响。研究了TiO2溶胶粘度、钛酸丁酯与活性炭的质量比、溶胶中TiO2的量及热处理温度... 采用溶胶凝胶法制备纳米TiO2/活性炭(activecarbon,AC)复合体。以无水乙醇为溶剂,蒸馏水、浓盐酸及钛酸丁酯的用量为实验 参数,考察其对TiO2溶胶粘度的影响。研究了TiO2溶胶粘度、钛酸丁酯与活性炭的质量比、溶胶中TiO2的量及热处理温度对TiO2/AC复合 体光催化活性的影响。用热重差热分析、扫描电镜、X射线衍射及BET(BrunauerEmmettTeller)法对其结构及陶瓷化过程进行了分析。 结果表明:TiO2溶胶粘度为5mPa·s、溶胶中TiO2的质量分数为6%、钛酸丁酯与活性炭质量比为0.2时,经500℃热处理所得的TiO2/AC 复合体的光催化活性最好,其比表面积为526.03m2/g,晶型中锐钛矿的含量占65.38%,晶粒尺寸为37.53nm。 展开更多
关键词 溶胶-凝胶 二氧化钛/活性炭 复合体 光催化剂
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Preparation of TiO_2-activated carbon complex membranes and their photoelectrocatalytic activity 被引量:2
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作者 尤宏 姚杰 +1 位作者 孙丽欣 王强 《Journal of Harbin Institute of Technology(New Series)》 EI CAS 2003年第1期104-107,共4页
The experimental process of preparing TiO 2 activated carbon complex membranes with activated carbon powder as main carrier, PTFE as binder and wire netting as matrix is described in detail, and both photo catalysis a... The experimental process of preparing TiO 2 activated carbon complex membranes with activated carbon powder as main carrier, PTFE as binder and wire netting as matrix is described in detail, and both photo catalysis and photo electro catalysis are measured to study the properties of complex membranes. Experimental results show that the photo catalytic activity of the membranes is high and stable in the process of treating Rhodamine B; the application of an electric field accelerates the speed of photo catalysis, and the efficiency of photo catalysis is increased 2.5 times when the applied voltage is 0.8 V; and the degradation of Rhodamine B follows the dynamics of first order reaction. It is concluded from the discussion of experimental results that the preparation process of TiO 2 activated carbon complex membranes is a simple low cost process suitable for large scale application. 展开更多
关键词 TiO 2 PHOTOCATALYSIS PHOTOELECTROCATALYSIS degradation
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