环境工程学报2009，Vol.3Issue(12)：2302-2305,4.
微波辅助法合成纳米ReFeO_3光催化剂
Microwave-assisted synthesis of perovskite ReFeO_3 photocatalyst
摘要
Abstract
Nano-photocatalysts ReFeO_3(Re: La,Sm,Eu,Gd) were prepared by the microwave assisted method. Stoichiometric amounts of rare earth nitrate : La ( NO_3 )_3,Sm ( NO_3)_3,Eu ( NO_3)_3,Gd ( NO_3 )_3 and and urea were introduced as the inhibitor and the homogeneous precipitator,respectively. The whole assembly was then exposed to microwave to complete the reaction. The structures,sizes and morphology of these samples were characterized by X-ray diffraction (XRD),scanning electron microscopy (SEM),transmission electron mi-croscope (TEM) and UV-visible diffuse reflection spectroscopy (UV-vis DRS). The results show that all the samples are nanosized perovskite-type oxides. Photocatalytic properties of these samples were evaluated by degra-dation of Rhodamine B (RhB) aqueous solution under visible light irradiation. EuFeO_3,GdFeO_3,SmFeO_3 and LaFeO_3 exhibited good photocatalytic activities. The degradation rates of RhB are all over 85% under visible light irradiation for 180 min.关键词
钙钛矿/光催化/微波稀/土金属Key words
perovskite/photocatalyst/microwave/rare earth分类
化学化工引用本文复制引用
丁建林,吕晓萌,张辉,舒火明,谢吉民,吕平..微波辅助法合成纳米ReFeO_3光催化剂[J].环境工程学报,2009,3(12):2302-2305,4.基金项目
江苏省工业高技术项目(BG2007025) （BG2007025）
江苏省社会发展基金项目(BS2006038) （BS2006038）
镇江市社会发展项目(SH2009003) （SH2009003）
