活性炭(AC)及活性炭纤维(ACF)作为光催化剂载体具有较高的比表面积和较强的吸附性能,可以有效提高负载型光催化剂TiO2/AC和TiO2/ACF对有机污染物的光催化降解效率.首先介绍了TiO2光催化剂的结构特性以及各种掺杂改性方法,对负载型TiO2/AC及TiO2/ACF光催化剂的各种制备方法进行了详细评述.在此基础上,讨论了影响有机污染物光催化降解性能的重要因素,指出了负载型TiO2光催化材料研究中有待解决的问题和发展方向.
Activated carbon (AC) or activated carbon fiber (ACF) can be used as good catalyst support for its high specific surface area and strong adsorption capability.AC and ACF have been paid much attention by many researchers because they can enhance the photocatalytic degradation efficiency of TiO2 for organic contamination.The structure and characteristics of TiO2 photocatalyst and its doping modification method are introduced at first.And then a variety of preparation techniques for TiO2/AC (or TiO2/ACF) supported photocatalytic materials are summarized in detail.Based on this,several important influence factors on the photocatalytic degradation of various contaminations are discussed.The problem of supported TiO2 photocatalyst to be solved and its development direction are pointed out.
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