TiO_2在微孔型活性炭纤维上的固载及其对苯酚的光催化降解(英文)  

Immobilization of TiO_2 on microporous activated carbon fibers and their photodegradation performance for phenol

作　　者：员汝胜[1] 郑经堂[1] 关蓉波[2] 刘以红[2] 

机构地区：[1]中国科学院山西煤炭化学研究所炭材料重点实验室 [2]石油大学重质油加工国家重点实验室,山东东营257061

出　　处：《新型炭材料》2005年第1期45-50,共6页New Carbon Materials

摘　　要：以环氧树脂作为TiO2与活性炭纤维(ACF)之间联结的前驱体,使TiO2粘附于纤维表面,而后经氮气氛下400℃～580℃不同温度的煅烧处理,制得TiO2/ACF复合体.采用BET,SEM,XRD及UV-Vis光谱等手段对复合体的物理化学特性进行了表征.以水中苯酚为目标污染物考察了TiO2/ACF样品的光催化性能.结果表明,460℃煅烧品较其他样品对苯酚具有更好的去除能力.在其重复利用过程中,始终保持了高的光催化效率,直至第三次循环,其最终对苯酚的去除量仍与P25粉体相当.而且,牢固负载的TiO2更具实用性,易于从水中回收.The immobilization of TiO2 on ACF (TiO2/ACF) was performed using epoxy resin as binder between TiO2, and ACF, followed by calcination at different temperatures from 400 to 580 degrees C in a N-2 atmosphere. The properties of the resulting materials were characterized by BET, SEM, XRD and UV-Vis spectra. The photodegradation behavior of TiO2/ACF prepared was investigated in aqueous solution using phenol as a target pollutant. It was found that the sample calcined at 460 degrees C exhibited the highest phenol removal efficiency. When used repeatedly, TiO2/ACF still presented high photocatalytic efficiency, and the phenol removal in the third cycle was almost the same as Degussa P25, mainly anatase. Moreover, TiO2 is tightly bound to ACF, and can be easily handled and recovered from water.

关 键 词：TIO2 活性炭纤维 苯酚 二氧化钛 光催化降解 有机污染物 水处理技术 

分 类 号：TQ342.86[化学工程—化纤工业]