Nano Archive

Formation of Na0.44MnO2 nanowires via stress-induced splitting of birnessite nanosheets

Li, Yanguang and Wu, Yiying (2009) Formation of Na0.44MnO2 nanowires via stress-induced splitting of birnessite nanosheets. Nano Research, 2 (1). pp. 54-60. ISSN 1998-0124 (Print) 1998-0000 (Online)

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Official URL: http://www.springerlink.com/content/j6p268u8w1n837...

Abstract

High aspect ratio Na0.44MnO2 nanowires with a complex one-dimensional (1-D) tunnel structure have been synthesized. We found that the reaction went through layered birnessite nanosheet intermediates, and that their conversion to the final product involved splitting of the nanosheets into nanowires. Based on our observations, a stress-induced splitting mechanism for conversion of birnessite nanosheets to Na0.44MnO2 nanowires is proposed.The final and intermediate phases show topotaxy with 〈001〉f // 〈020〉b or 〈110〉b where f represents the final Na0.44MnO2 phase and b the intermediate birnessite phase. As a result of their high surface areas, the nanowires are efficient catalysts for the oxidation of pinacyanol chloride dye.

Item Type:Article
Subjects:Physical Science > Nanophysics
Physical Science > Nano objects
Material Science > Nanochemistry
Material Science > Nanostructured materials
Divisions:Faculty of Engineering, Science and Mathematics > School of Physics
Faculty of Engineering, Science and Mathematics > School of Chemistry
ID Code:8405
Deposited By:JNCASR
Deposited On:30 Mar 2010 05:25
Last Modified:30 Mar 2010 05:25

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