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Comparative study on MoO3 and HxMoO3 nanobelts : structure and electric transport

journal contribution
posted on 2008-01-01, 00:00 authored by Xiaokai HuXiaokai Hu, Y Qian, Z Song, J Huang, R Cao, J Xiao
In this study, the suspension of MoO3 nanobelts was first prepared in a hydrothermal way from Mo powders and H2O2 solution, which could be transformed into the suspension of HxMoO3 nanobelts under an acidic condition using N2H4 ·H2O as the reducing agent. Three paper-form samples made from MoO3 and HxMoO3 nanobelts (low or high hydrogen content) were then fabricated via a vacuum filtration method, followed by their structural comparative analysis such as FESEM, XRD, Raman spectra, and XPS, etc. The measurement of electric resistances at room temperature shows that the conductance of HxMoO3 nanobelts is greatly improved because of hydrogen doping. The temperature-dependent resistances of HxMoO3 nanobelts agree with the exponential correlation, supporting that the conducting carriers are the quasi-free electrons released from Mo5+. In addition, the formation process of HxMoO3 nanobelts from MoO3 nanobelts is also discussed.

History

Journal

Chemistry of materials

Volume

20

Issue

4

Pagination

1527 - 1533

Publisher

American Chemical Society

Location

Washington, D. C.

ISSN

0897-4756

eISSN

1520-5002

Language

eng

Publication classification

C1.1 Refereed article in a scholarly journal

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