Dou Lin, Li Jianzhang, Zhong Junbo, Wang Tao, Cheng Chaozhu, Chen Jiufu, Li Minjiao. Preparation and Photocatalytic Activities of TiO2/MCM-41 Photocatalyst[J]. IRON STEEL VANADIUM TITANIUM, 2015, 36(2): 24-27,32. doi: 10.7513/j.issn.1004-7638.2015.02.005
Citation:
Dou Lin, Li Jianzhang, Zhong Junbo, Wang Tao, Cheng Chaozhu, Chen Jiufu, Li Minjiao. Preparation and Photocatalytic Activities of TiO2/MCM-41 Photocatalyst[J]. IRON STEEL VANADIUM TITANIUM, 2015, 36(2): 24-27,32. doi: 10.7513/j.issn.1004-7638.2015.02.005
Dou Lin, Li Jianzhang, Zhong Junbo, Wang Tao, Cheng Chaozhu, Chen Jiufu, Li Minjiao. Preparation and Photocatalytic Activities of TiO2/MCM-41 Photocatalyst[J]. IRON STEEL VANADIUM TITANIUM, 2015, 36(2): 24-27,32. doi: 10.7513/j.issn.1004-7638.2015.02.005
Citation:
Dou Lin, Li Jianzhang, Zhong Junbo, Wang Tao, Cheng Chaozhu, Chen Jiufu, Li Minjiao. Preparation and Photocatalytic Activities of TiO2/MCM-41 Photocatalyst[J]. IRON STEEL VANADIUM TITANIUM, 2015, 36(2): 24-27,32. doi: 10.7513/j.issn.1004-7638.2015.02.005
1. Key Laboratory of Green Catalysis of Sichuan Institutes of Higher Education, School of Chemistry and Pharmaceutical Engineering, Zigong 643400, Sichuan, China;
2. College of Materials and Chemical Engineering, Sichuan University of Science and Engineering, Zigong 643000, Sichuan, China
TiO2/MCM-41 photocatalysts with different titania content were prepared by loading titania onto the mesopores of MCM-41 molecular sieves via a sol- gel method. The photocatalytic activities of TiO2/MCM-41 photocatalysts were evaluated by the photocatalytic degradation of Rhodamine B aqueous solution.TiO2/MCM-41 photocatalysts were characterized by X-ray diffraction （XRD）,UV- Vis diffuse reflectance spectroscopy and N2 adsorption techniques. The results indicate that both the BET surface area and pore volume of TiO2/MCM-41 photocatalyst decrease with the increase in content of loaded titania. The average crystal size of titania loaded on TiO2/MCM-41 is smaller than that of pure titania nanoparticles. 20% TiO2/MCM-41 photocatalyst has the highest photo- induced charge separation efficiency. Among all the photocatalysts,the 20% TiO2/MCM-41 sample possesses the best photocatalytic activity. The h+ is main active species during the photocatalytic process. The photocatalytic activities of the TiO2/MCM-41 photocatalyst depend on their adsorption abilities and the activity of titania loaded onto the MCM-41 molecular sieves.
DownLoad: