SnO_2纳米棒的氧化还原特性  

The Redox Properties of SnO_2 Nanorods

作　　者：赵鹤云[1,2] 赵忠泽[3] 赵义芬[1] 柳清菊[1,2] 

机构地区：[1]云南大学材料科学与工程系,云南昆明650091 [2]云南大学云南省高校纳米材料与技术重点实验室,云南昆明650091 [3]云南师范大学商学院,云南昆明650106

出　　处：《催化学报》2010年第1期44-48,共5页

基　　金：云南省科技厅应用基础研究项目(2007E173M);云南省教育厅自然科学重点研究项目(07Z11021);云南大学自然科学研究项目(2007JN001)

摘　　要：利用室温固相反应在NaCl-KCl熔盐介质中,通过焙烧含SnO2纳米颗粒前驱体合成了SnO2纳米棒,并采用X射线衍射、扫描电镜、透射电镜、选区电子衍射和X射线光电子能谱对SnO2纳米棒进行了表征.结果表明,SnO2纳米棒是表面光滑、结晶完整的金红石结构单晶体,直径为10～20nm,长度为几百纳米到几个微米.程序升温还原结果表明,SnO2纳米棒具有较好的氧化还原性能和催化活性.探讨了SnO2纳米棒的氧化还原机理.SnO2 nanorods were successfully synthesized in molten NaCl-KCl salt through calcination of SnO2 nanoparticles precursor pre- pared by solid state reaction at room temperature. The structure and morpho 1 ogy of SnO2 nanorods were characterized by X-ray diffraction, scanning electron microscopy, transmission electron microscopy, selected-area electron diffraction, and X-ray photoelectron spectroscopy. The results showed that the SnO2 nanorods with 10-20 nm diameter and several micrometers length were rutile structure. The results of H2 in detail reduction demonstrated that the SnO2 nanorods had good redox performance. The redox mechanism was discussed

关 键 词：二氧化锡 纳米棒 程序升温还原 氧化还原特性 催化活性 氧化还原机理 

分 类 号：TB383.1[一般工业技术—材料科学与工程]