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

被引：26

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

来源：

MATERIALS LETTERS | 2008年 / 62卷 / 8-9期

基金：

中国国家自然科学基金;

关键词：

gamma-MnOOH multipods; beta-MnO2; nanorods; hydrothermal synthesis; nanomaterials; crystal growth;

D O I：

10.1016/j.matlet.2007.08.041

中图分类号：

T [工业技术];

学科分类号：

08 ;

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.

引用

页码：1336 / 1338

页数：3

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