TiO_2/竹炭复合材料对直接耐酸大红4BS的光催化降解研究  

Photocatalytic degradation ability to direct fast scarlet 4BS of bamboo charcoal supported TiO_2 composite

作　　者：胡志彪[1] 周云龙[1] 陈武华[1,2] 

机构地区：[1]龙岩学院化学与材料学院,福建龙岩364012 [2]厦门大学材料学院,福建厦门361005

出　　处：《炭素技术》2015年第2期15-18,共4页Carbon Techniques

基　　金：福建省青年人才项目(2007F3076);福建省教育厅A类项目(JA12318)

摘　　要：研究了TiO2/竹炭复合材料在紫外光作用下对直接耐酸大红4BS的催化降解情况。结果表明,Ti O2含量为48.34%的复合材料对直接耐酸大红4BS的光催化降解效果最好。在紫外灯光照射下,复合材料投加量为120-160 g/L时,对100 mg/L的直接耐酸大红4BS溶液可达到良好的降解效果;p H越小,降解率越好,在p H值为0.38时,对100 mg/L的直接耐酸大红4BS溶液的降解率达99.14%;随直接耐酸大红4BS浓度的升高,降解率先升高后降低;随时间的延长,降解率升高。复合材料对直接耐酸大红4BS的光催化降解符合反应一级动力学方程。Photocatalytic degradation properties of TiOJbamboo charcoal composites to direct fast scarlet 4BS under ultraviolet radiation were studied. The results showed that the degradation rate can reach the best when the content of TiO2 is 48.34% in the composites. Under the ultraviolet radiation, the photocatalytic effect to 100 mg/L direct fast scarlet 4BS is the best with 120--160 g/L composites in it. The lower the pH value is, the better the degradation rate is. When pH value is 0.38, the degradation rate of 100 mg/L direct fast scarlet 4BS reaches 99.9%. The photocatalytic degradation rate increases with the increasing of the photoeatalytie time, and first increases and then reduces with the increase of the initial concentration. The photocatalytic degradation to direct fast scarlet 4BS on the composites fits in with the first-order kinetic equation.

关 键 词：竹炭 直接耐酸大红4BS 光催化 

分 类 号：TB332[一般工业技术—材料科学与工程]