文献类型：期刊文献

英文题名：A simple one step approach to preparation of γ-MnOOH multipods and β-MnO₂ nanorods

作者：Jia, Yanjin[1];Xu, Jian[1,2];Zhou, Lihui[1];Liu, Honglai[1];Hu, Ying[1]

机构：[1]E China Univ Sci & Technol, Dept Chem, Adv Mat Lab, Shanghai 200237, Peoples R China;[2]Shanghai Inst Measurement & Testing Technol, Shanghai 201203, Peoples R China

年份：2008

卷号：62

期号：8-9

起止页码：1336

外文期刊名：MATERIALS LETTERS

收录：;WOS:【SCI-EXPANDED(收录号:WOS:000253289000052)】；

语种：英文

外文关键词：gamma-MnOOH multipods; beta-MnO2 nanorods; hydrothermal synthesis; nanomaterials; crystal growth

摘要：Multipod-like gamma-MnOOH and rod-like beta-MnO2 nanocrystals are synthesized by oxidization of manganese sulphate hydrate (MnSO4-H2O) using sodium chlorate (NaClO3) as an oxidizing agent in a simple hydrothermal reaction system in the absence of any templates, catalysts, or organic reagents. The powder X-ray diffraction (XRD) and scanning electron microscopy (SEM) are used to characterize the as-prepared products. Based on the results of XRD and SEM, multipod-like gamma-MnOOH can be transformed into rod-like beta-MnO2 nanocrystals via one step synthetic route by simply increasing the reaction time while other conditions are kept constant. And a possible transfer mechanism via a nucleation-dissolution-anisotropic growth-recrystallization process is presented. (C) 2007 Elsevier B.V. All rights reserved.