摘要
通过论述炭与TiO2光催化剂的复合方式,系统总结了复合光催化剂的各种制备方法,指出炭与TiO2的复合呈现多样化的特征,炭不仅作为载体,还可以用作涂层、造孔剂以及助剂。同时,炭在复合体中也展现出多方面的作用,不仅可以富集目标污染物,捕获中间产物,还可以抑制水蒸气和其他组分对光催化降解的影响,并且可以抑制热处理时TiO2相变和晶粒长大。可见,炭与TiO2光催化剂的复合将为推动光催化技术的实用化产生积极影响。
The preparation methods of carbon/TiO2 composite photocatalysts are reviewed. It is pointed out that composites exhibit a diversity of characteristics: carbon is not only used as a support but a coating, pore-forming agent and assisting additive. Correspondingly, carbon in the composite has the effect of concentrating the targeted pollutant and capturing intermediate products, besides which it can reduce the competitive action of water vapor with other pollutants on TiO2, which is favorable to photodegradation. In addition, it has an advantage of suppressing the phase transformation from anatase to rutile and of preventing sintering and crystal growth in TiO2 particles at high temperatures. Therefore, it has a beneficial effect on the practical application of photocatalysis technology for carbon/TiO2 composite photocatalysts.
出处
《新型炭材料》
SCIE
EI
CAS
CSCD
2004年第3期229-238,共10页
New Carbon Materials
基金
国家863项目(2002AA649060) ~~
