Synthesis of TiO2/Al-MCM-41 Composites with Coal-Measure Kaolin and Performance in Its Photocatalysis

Qisheng Wu, Shuiping Li
2011 Materials Sciences and Applications  
TiO 2 /Al-MCM-41 composites with various titania content were prepared by loading titania into the mesopores of Al-MCM-41 mesoporous molecular sieve from coal-measure kaolin as silicon and aluminum source via general sol-gel method and incipient wetness impregnation method. TiO 2 /Al-MCM-41 composites were characterized by XRD, FT-IR and SEM, and the photocatalytic degradation of methyl orange solution under visible light irradiation. The results showed that the titania crystalline phase was
more » ... alline phase was anatase, and the particles size of TiO 2 increase with TiO 2 content. The photocatalytic degradation rates of all samples prepared by sol-gel method and incipient wetness impregnation have been become stable by visible light irradiation for 150 min, and the highest degradation rate was 83.7% and 76% respectively.
doi:10.4236/msa.2011.21003 fatcat:sznw3jqulbhsjcjnblvqd4o2xe