Electronic structure and catalytic study of solid solution of GaN in ZnO

Mapa, Maitri ; Thushara, K. S. ; Saha, Biswajit ; Chakraborty, Purushottam ; Janet, C. M. ; Viswanath, R. P. ; Madhavan Nair, C. ; Murty, K. V. G. K. ; Gopinath, Chinnakonda S. (2009) Electronic structure and catalytic study of solid solution of GaN in ZnO Chemistry of Materials, 21 (13). pp. 2973-2979. ISSN 0897-4756

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Official URL: http://pubs.acs.org/doi/abs/10.1021/cm900682q

Related URL: http://dx.doi.org/10.1021/cm900682q

Abstract

Solid solutions of GaN in ZnO (Zn1-zGaz)(O1-xNx) (x and z ≤ 0.15) have been prepared by simple solution combustion method. Except for minor changes in the lattice contraction, no significant change in the Wurtzite structure was observed. Raman and secondary ion mass spectrometry results show the direct Zn-N and Ga-N bonds in (Zn1-zGaz)(O1-xNx). Visible light absorption and XPS results demonstrate that N 2p states of nitride occupy the states above the O 2p valence band, and hence a change in optical band gap reduction occurs to ~2.5 eV from 3.37 eV for ZnO. Significant nitrogen fixation catalytic activity through NH3 formation has been observed at ambient pressure on virgin (Zn1-zGaz)(O1-xNx) material, indicating its potential as a catalyst.

Item Type:Article
Source:Copyright of this article belongs to American Chemical Society.
ID Code:61928
Deposited On:15 Sep 2011 12:17
Last Modified:15 Sep 2011 12:17

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