[二氧化钌/二氧化钛耦合光催化剂的制备及特性研究]

[A study on preparation and characteristic of RuO2/TiO2 coupled photocatalyst].

作者信息

Yao Bing-hua, Wang Li-ming, Yu Xiao-jiao, Yang Guo-nong, Zhao Gao-yang, Zheng Huai-li

机构信息

Departrnent of Applied Chemistry, Xi'an University of Technology, Xi'an 710048, China.

出版信息

Guang Pu Xue Yu Guang Pu Fen Xi. 2005 Jun;25(6):934-7.

PMID:16201376

Abstract

RuO2/TiQ2 coupled photocatalyst was prepared by sol-gel-dipping method. Being a model reaction, the photocatalytic degradation of direct fast black G was investigated in RuO2/TiO2 powder suspension irradiated by UV-lamp. The results showed that the addition of RuO2 to TiO2 greatly enhanced its photocatalytic activity, and the optimum dipped content of RuO2 was 0.16%, the optimum value of the calcinations temperature and the addition of RuO2/TiO2 powder were 500 degrees C and 5.00 g x L(-1), respectively. The photocatalytic degradation of direct fast black G was experimentally demonstrated to follow the Langmuir-Hinshelwood kinetic model, and the adsorption constant (14.22 L x mmol(-1)) and the reaction rate constant [4.94 x 10(-3) mmol(L x min)(-1)] were determined, respectively.

摘要

采用溶胶-凝胶浸渍法制备了RuO2/TiQ2复合光催化剂。以直接耐晒黑G的光催化降解为模型反应，研究了在紫外灯照射下RuO2/TiO2粉末悬浮液中的光催化降解情况。结果表明，向TiO2中添加RuO2大大提高了其光催化活性，RuO2的最佳浸渍量为0.16%，煅烧温度和RuO2/TiO2粉末添加量的最佳值分别为500℃和5.00 g·L(-1)。实验证明，直接耐晒黑G的光催化降解遵循Langmuir-Hinshelwood动力学模型，分别测定了吸附常数(14.22 L·mmol(-1))和反应速率常数[4.94×10(-3) mmol·(L·min)(-1)]。