Preparation of alpha-MnO_2 nanowires through a gamma-MnOOH precursor route

Lisheng Gao; Linfeng Fei; Huagui Zheng

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Preparation of alpha-MnO_2 nanowires through a gamma-MnOOH precursor route

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In the absence of extra surfactant or template, single crystalline gamma-MnOOH nanowires were prepared directly via a hydrothermal method using KMnO_4 and CO(NH_2)_2 starting materials at 120 deg C for 12 h; and single crystalline a-MnO_2 nanowires could be obtained after calcining the 7-MnOOH nanowire precursor in air at 320 deg C for 5 h. Various measurements were used to characterize the structure, morphology and electrochemical behavior of the resultant products. The urea acted as an important reagent and its participation was believed to contribute to the formation and growth of gamma-MnOOH nanowires and even benefit the improvement of the electrochemical properties of the prepared alpha-MnO_2 nanowires.

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来源
《Materials Letters》 |2007年第9期|1785-1788|共4页
作者
Lisheng Gao; Linfeng Fei; Huagui Zheng;
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作者单位

Department of Chemistry, University of Science and Technology of China, Hefei 230026, PR China;

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收录信息美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);
原文格式 PDF
正文语种英语
中图分类工程材料学;
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Nanocomposites; Nanomaterials; Oxides;

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Preparation of alpha-MnO_2 nanowires through a gamma-MnOOH precursor route

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