Electrodeposited α- and β-phase MoO3 films and investigation of their gasochromic properties

Yao, David Di, Ou, Jian Zhen, Latham, Kay, Zhuiykov, Serge, O'Mullane, Anthony P., & Kalantar-zadeh, Kourosh (2012) Electrodeposited α- and β-phase MoO3 films and investigation of their gasochromic properties. Crystal Growth & Design, 12(4), pp. 1865-1870.

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α- and β-Phase MoO3 are synthesized using an electrodeposition method on fluorine-doped tin oxide (FTO) glass substrates from sodium-molybdate (Na2MoO4) solutions. We show that it is possible to obtain both α- and β-MoO3 by manipulating the cyclic voltammetry (CV) parameters during electrodeposition. Raman spectroscopy, X-ray diffraction, and scanning electron microscopy indicate that the applied potential range and sweep rate are strongly influential on the phase obtained and the surface morphology of the electrodeposited thin films. Gasochromic measurements were carried out on the annealed samples by exposing them to H2 gas. It was revealed that α-MoO3 thin films provided better response to H2 interaction than β-MoO3 films did. Additionally, porous films provided significantly larger responses than smooth films.

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ID Code: 64316
Item Type: Journal Article
Refereed: Yes
DOI: 10.1021/cg201500b
ISSN: 1528-7483
Divisions: Current > Schools > School of Chemistry, Physics & Mechanical Engineering
Current > QUT Faculties and Divisions > Science & Engineering Faculty
Deposited On: 19 Nov 2013 01:15
Last Modified: 20 Nov 2013 05:26

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