| 微波辅助法合成纳米ReFeO3光催化剂 |
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| 引用本文： | 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ReFeO3光催化剂[J].环境工程学报,2009,3(12):2302-2305. |
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| 作者姓名： | 丁建林 吕晓萌 张辉 舒火明 谢吉民 吕平 |
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| 作者单位： | 江苏大学化学化工学院,镇江,212013 |
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| 基金项目： | 江苏省工业高技术项目(BG2007025)；江苏省社会发展基金项目(BS2006038)；镇江市社会发展项目（SH2009003） |
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| 摘 要： | 以稀土金属硝酸盐La(NO3)3、Sm(NO3)3、Eu(NO3)3、Gd(NO3)3和Fe(NO3)3·9H2O为原材料, 以活性炭为模板剂，聚乙烯醇(PVA)和尿素分别用作阻聚剂和均相沉淀剂，在微波辐照下制得纳米钙钛矿型化合物ReFeO3(Re:La,Sm,Eu,Gd)。用X射线粉末衍射仪(XRD)、UV-vis漫反射仪(DRS)、扫描电子显微镜(SEM)、透射电子显微镜(TEM)对产物组成、结构、颗粒大小、形貌等进行了表征，结果表明产物均为单一钙钛矿结构的纳米颗粒。以产物为光催化剂，在可见光照射下对罗丹明B水溶液进行光催化降解实验，发现该类化合物均具有较好的光催化活性，180 min内对罗丹明B的脱色率均达到85%以上。
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| 关 键 词： | 钙钛矿 光催化 微波 稀土金属 |
Microwave assisted synthesis of perovskite ReFeO3 photocatalyst |
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| Ding Jianlin,LU Xiaomeng,Zhang Hui,Shu Huoming,Xie Jimin,Lü Ping.Microwave assisted synthesis of perovskite ReFeO3 photocatalyst[J].Techniques and Equipment for Environmental Pollution Control,2009,3(12):2302-2305. |
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| Authors: | Ding Jianlin LU Xiaomeng Zhang Hui Shu Huoming Xie Jimin Lü Ping |
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| Institution: | School of Chemistry & Chemical Engineering, Jiangsu University, Zhenjiang 212013,China,School of Chemistry & Chemical Engineering, Jiangsu University, Zhenjiang 212013,China,School of Chemistry & Chemical Engineering, Jiangsu University, Zhenjiang 212013,China,School of Chemistry & Chemical Engineering, Jiangsu University, Zhenjiang 212013,China,School of Chemistry & Chemical Engineering, Jiangsu University, Zhenjiang 212013,China and School of Chemistry & Chemical Engineering, Jiangsu University, Zhenjiang 212013,China |
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| 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. |
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| Keywords: | perovskite photocatalyst microwave rare earth |
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