Abstract:

PW/MCM-41 has been prepared and characterized by immersion method. The catalytic activity of the photocatalyst in the degradation reaction of photocatalytic simulated dyeing wastewater methylene blue（MB）solution is investigated. The results show that when the catalyst charge number is 30%，mass concentration of catalyst dosage 3.0 g/L，the concentration of methylene blue 10 mg/L，pH=5，and light application time 100 min，the photocatalytic degradation rate is as high as 91% over. Furthermore，the catalyst could be used repeatedly.

Key words: phosphotungstic acid, MCM-41 molecular sieve, photocatalytic degradation, methylene blue

摘要：

以浸渍法制备了负载型光催化剂PW/MCM-41,并对催化剂进行了表征,考察了催化剂在光催化模拟染料废水亚甲基蓝(MB)溶液降解反应中的催化活性。实验结果表明:催化剂负载量为30%、催化剂投加质量浓度为3.0 g/L、MB溶液的初始质量浓度为10 mg/L、pH=5、光照时间100 min时,对亚甲基蓝降解率可达91%以上,且催化剂可重复使用。

关键词: 磷钨酸, MCM-41分子筛, 光催化降解, 亚甲基蓝

CLC Number: 

• O643.36