TiO_2/C光催化剂的制备及其对甲苯的光催化降解性能研究  

Preparation of TiO_2/C Photocatalyst and Its Performance for Photocatalytic Degradation of Toluene

作　　者：卢辛成[1] 蒋剑春[1] 孙康[1] 

机构地区：[1]中国林业科学研究院林产化学工业研究所生物质化学利用国家工程实验室国家林业局林产化学工程重点开放性实验室江苏省生物质能源与材料重点实验室,江苏南京210042

出　　处：《林产化学与工业》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)

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.

关 键 词：多孔炭 TIO2 气相光催化 甲苯 

分 类 号：TQ424[化学工程]