摘要
以不同种类颗粒状多孔炭为载体,采用溶胶-凝胶法制备TiO2溶胶,通过浸渍实现催化剂的固定,而后经过高温活化制备了负载型TiO2/C光催化剂。采用X射线衍射(XRD)、扫描电子显微镜(SEM)和FT-IR等方法对制得的光催化剂进行表征。以甲苯为目标污染物,研究了特定浓度的甲苯在不同降解条件下以及不同多孔炭负载光催化剂样品的光催化降解效果。结果表明:在紫外光的照射下,复合型TiO2/C光催化剂对甲苯具有化学降解作用;椰壳活性炭为载体制备的复合型TiO2/AC光催化剂具有较高降解率,可达72%,并且具有持续的降解稳定性。
TiO2-sol prepared by sol-gel method was supported on different kinds of porous carbon grains by impregnation followed by high-temperature activation to obtain TiO2/C photocatalyst. The TiO2/C photocatalyst was characterized by XRD, SEM and FT-IR. The influence of conditions and different kinds of carbon grains were investigated in the degeneration of toluene. The results showed that TiO2/C photocatalyst had the effect for photocatalytic degradation of toluene under ultraviolet irradiation; TiO2/AC photocatalyst supported by coconut activated carbon had high degradation rate for toluene up to 72 % and possessed persistent degradation-stability.
出处
《林产化学与工业》
EI
CAS
CSCD
北大核心
2009年第B10期54-58,共5页
Chemistry and Industry of Forest Products
基金
"十一五"国家科技支撑计划资助(2006BAD18B10
2006BAD19B06)
中央级公益性科研院所基本科研业务费专项资金资助(CAFINT2007C16)
