• 关键词：甲醛  超临界乙醇  复合材料  光催化活性  吸附  协同效应

• 基金项目：国家留学基金(编号:98835042)

• 黄彪
• 福建农林大学材料工程学院 南平353001

• 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Ti₂ 粒子,同时产生的Ti₂ 粒子可与活性炭融合成一体,形成的活性炭 Ti₂ 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Ti₂ 样品的物理混合形式.

• Abstract：Photo catalytic TiO₂ 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 TiO₂ is a photo catalyst.As a result, the supercritically treated TiO₂ activated carbon composites (Sc TiO₂ AC)had a higher decomposing ability, compared with the performance of non composite composed of a simple physical mixture of activated carbon and TiO₂ 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.

• Key words：formaldehyde  supercritical ethanol  TiO₂ activated carbon composites  photo catalytic activity  adsorptivity  synergetic effect

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