摘要
以液相沉积法在不锈钢片上沉积TiO2薄膜,以该TiO2/不锈钢片作为光阳极,Pb为阴极,采用单槽反应器和双槽反应器,研究了水中活性蓝染料的光电催化降解行为。结果表明,光电降解有机染料时,外加阳极偏压可提高TiO2薄膜电极的光催化活性。在相同的气氛下,活性蓝在双槽反应器的光电催化反应速率大于单槽反应器的反应速率;利用光电流的大小可以判断反应速率的快慢,本实验光电催化降解效率最大时,溶液的pH=7,阳极偏压为0.6 V,紫外光照射下两槽中通入空气。
The photoelectrocatalytic degradation of active blue on liquid phase deposition formed Ti02 photoanodes was investigated in single and double compartment photoreactor. The results showed that the photoelectrocatalytic activity of TiO2 thin film electrode could be improved largely under the external anodic bias potential,when pollutant was photoelectrocatalytic degraded. Besides, in the same condition, the photoelectrocatalysis rate of active blue in the double compartment is higher than in the single com- partment. The degradation rate of active blue could be evaluated by the photocurrent. The photoelectrocatalytic efficiency of active blue degradation was best when pH value was 7,the external anodic bias potential was 0.60 V, and under the ultraviolet radiation the compartment was entered the air.
出处
《应用化工》
CAS
CSCD
2006年第9期688-690,693,共4页
Applied Chemical Industry
关键词
TIO2薄膜
活性蓝
光催化
光电催化
TiO2 thin films
active blue
photocatalysis
photoelectrocatalysis
