酸改性天然沸石负载TiO_2降解甲醛的研究

Photocatalytic Degradation of Formaldehyde on Acid-modified Zeolite Coated with TiO_2

采用浸渍法制备了酸改性天然沸石负载TiO2催化剂,采用X射线衍射手段对催化剂进行表征,并考察了酸改性沸石、P25和沸石负载TiO2催化剂对甲醛的吸附性能和光催化活性。结果显示,沸石负载TiO2催化剂的吸附性能较酸改性沸石稍有增加,相对于单独紫外光照和P25/紫外光照,沸石负载TiO2催化剂具有更高的光催化活性,甲醛降解效率达到82.1%。

Acid-modified zeolite coated with TiO2 was synthesized by impregnation method and was characterized by X-ray diffraction. Adsorption and photocatalytic degradation of tbnnaldehyde on acid-modified zeolite, P25 and TiO2/Zeolite were investigated and compared. The results indicated that the adsorption capacity of formaldehyde on TiOjzeolite was more than pure zeolite. TiO2/Zeolite demonstrated the superior photocatalytic performance, achiveing 82.1% of formaldehyde degradation.