Fe2O3/TiO2 nanocomposite photocatalyst prepared by supercritical fluid combination technique and its application in degradation of acrylic acid

1st International Conference on New Material and Chemical Industry

材料科学;化学工业

Wei, J.^1 ; Zhang, J.C.^1

College of Architecture and Civil Engineering, Beijing University of Technology, Beijing

100124, China^1

关键词: ITS applications;    Nanocomposite catalyst;    Novel techniques;    Photo catalytic degradation;    Photocatalytic activities;    Supercritical fluid drying;    Ultra-violet spectrums;    Visible light region;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/167/1/012037/pdf
DOI  :  10.1088/1757-899X/167/1/012037

学科分类：材料科学（综合）

来源: IOP

【 摘 要 】

Fe2O3/TiO2nanocomposite photocatalysts were synthesized by supercritical fluid combination technique, consisting of sol-gel method and supercritical fluid drying. The photocatalytic activity of the samples was evaluated by the degradation of acrylic acid. The results indicated that the Fe2O3/TiO2nanocomposite catalysts prepared by this novel technique showed significant improvement in catalytic activity compared with pure TiO2or Fe2O3/TiO2catalysts prepared by traditional drying. Both infrared and ultraviolet spectrum of Fe2O3/TiO2nanocomposite photocatalysts shift a little to lower wavelength indicating that the absorption threshold of Fe doped nanocomposite photocatalysts shift into the visible light region. This phenomenon was also attested by the photocatalytic degradation test under visible light.