文献类型：期刊文献

英文题名：Ionic liquid assisted hydrothermal synthesis of monodispersed mesoporous SnO2 nanospheres

作者：Fang, Bin[1]; Yu, Jianyong[1]; Ge, Xueping[1]; Yang, Cunzhong[1]

机构：[1] Institute of Nuclear Technology Application, School of Science, East China University of Science and Technology, 130 Meilong Road, Shanghai 200237, China

年份：2012

卷号：73

起止页码：229

外文期刊名：Materials Letters

收录：EI(收录号：20121014834521)

语种：英文

外文关键词：Hydrothermal synthesis - Temperature - Gas adsorption - Sodium hydroxide - Nanospheres - Ionic liquids - Tin oxides

摘要：This paper reports a low-temperature route to prepare monodispersed mesoporous SnO2 nanospheres. This method is based on hydrothermal reaction of sodium stannate trihydrate with sodium hydroxide using [EMIm]BF 4 (1-ethyl-3-methylimidazolium tetrafluoroborate) as structure-directing agent. The phase composition and morphology of the nanospheres were characterized by means of XRD, SEM, TEM and nitrogen adsorption-desorption isotherm, respectively. The as-prepared nanospheres are mutually independent with uniform size distribution and good structural integrity. The effects of the reaction conditions (amounts of NaOH, amounts of [EMIm]BF4 and the reaction time) on morphology of the final products were studied. A possible formation mechanism of the nanospheres is proposed according to the results of time-dependent reactions. ? 2011 Elsevier B.V. All rights reserved.