超临界乙醇流体制取活性炭-TiO_2光催化剂复合材料的研究  

Characteristics of photo-catalytic TiO_2-activated carbon composites prepared by supercritical ethanol

作　　者：黄彪[1] 

机构地区：[1]福建农林大学材料工程学院,南平353001

出　　处：《环境科学学报》2002年第5期641-646,共6页Acta Scientiae Circumstantiae

基　　金：国家留学基金 (编号 :988350 4 2 )

摘　　要：研究表明 :在超临界乙醇流体介质下钛酸异丙酯能有效地分解成具光催化活性的锐钛矿型TiO2 粒子 ,同时产生的TiO2 粒子可与活性炭融合成一体 ,形成的活性炭 TiO2 光催化剂复合材料具很好的光催化活性与吸附作用 ,而且具有的协同效应优于活性炭与TiO2Photo catalytic TiO 2 activated carbon composites were prepared from tetraisopropyl titanate (TPT) soaked activated carbon (AC) in supercritical ethanol. In the composites, activated carbon is an adsorbent and the anatase form TiO 2 is a photo catalyst.As a result, the supercritically treated TiO 2 activated carbon composites (Sc TiO 2 AC ) had a higher decomposing ability, compared with the performance of non composite composed of a simple physical mixture of activated carbon and TiO 2 granules. This indicates that the supercritical treatment can be effectively used to prepare the photo catalytic composites possessing high synergetic effect of adsorption and photo catalytic decomposition of formaldehyde for environmental cleaning.

关 键 词：超临界乙醇 活性炭 TIO2 光催化剂 甲醛 复合材料 吸附 协同效应 二氧化钛 

分 类 号：TB33[一般工业技术—材料科学与工程]