Design of Composite Photocatalyst of TiO2 and Y-Zeolite for Degradation of 2-Propanol in the Gas Phase under UV and Visible Light Irradiation

Molecules

TakashiKamegawa¹  Yasushi Ishiguro¹  Ryota Kido¹  Hiromi Yamashita¹ 

[1] Division of Materials and Manufacturing Science, Graduate School of Engineering, Osaka University, 2-1 Yamadaoka, Suita, Osaka 565-0871, Japan

关键词: photocatalyst;    TiO₂;    Y-zeolite;    composite;    hydrophobic modification;    visible light;    decomposition of 2-propanol gas;   

DOI  :  10.3390/molecules191016477

来源: mdpi

【 摘 要 】

Hydrophobic Y-zeolite (SiO₂/Al₂O₃ = 810) and TiO₂ composite photocatalysts were designed by using two different types of TiO₂ precursors, i.e., titanium ammonium oxalate and ammonium hexafluorotitanate. The porous structure, surface property and state of TiO₂ were investigated by various characterization techniques. By using an ammonium hexafluorotitanate as a precursor, hydrophobic modification of the Y-zeolite surface and realizing visible light sensitivity was successfully achieved at the same time after calcination at 773 K in the air. The prepared sample still maintained the porous structure of Y-zeolite and a large surface area. Highly crystalline anatase TiO₂ was also formed on the Y-zeolite surface by the role of fluorine in the precursor. The usages of ammonium hexafluorotitanate were effective for the improvement of the photocatalytic performance of the composite in the degradation of 2-propanol in the gas phase under UV and visible light (λ > 420 nm) irradiation.

【 授权许可】

CC BY   
© 2014 by the authors; licensee MDPI, Basel, Switzerland.