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]E China Univ Sci & Technol, Inst Nucl Technol Applicat, Sch Sci, Shanghai 200237, Peoples R China

年份：2012

卷号：73

起止页码：229

外文期刊名：MATERIALS LETTERS

收录：;WOS:【SCI-EXPANDED(收录号:WOS:000302046800066)】；

基金：This work was financially supported by the National Natural Science Foundation of China (No. 51103039) and Program for outstanding young teachers of ECUST (No. YK0157134).

语种：英文

外文关键词：Porous materials; Nanoparticles; Tin oxide; Ionic liquid; Sodium stannate

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]BF4 (1-ethy1-3-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. (C) 2012 Elsevier B.V. All rights reserved.