Vapor-solid growth of molybdenum oxide nanowhiskers: Wettability studies and growth process

Selvakumar, N and Thaker, Amar and Siju, John and Barshilia, Harish C (2013) Vapor-solid growth of molybdenum oxide nanowhiskers: Wettability studies and growth process. Nanoscience and Nanotechnology letters, 5 (8). pp. 842-849. ISSN 1941-4900

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Official URL: http://www.ingentaconnect.com/content/asp/nnl/2013...

Abstract

MoO2 coatings were grown on silicon substrates using vapor–solid mechanism at different filament temperatures, durations and oxygen flow rates. The coating deposited at a filament temperature of 1500 °C with oxygen flow rate in the range of 4–8 sccm exhibited nanowhisker microstructure. The wettability studies indicated that the as-prepared MoO2 coating is hydrophilic in nature whereas, MoO2 coating treated with silane showed a high contact angle of 156°. The nanoscale protrusions combined with low surface free energy silane coating resulted in superhydrophobicity. The growth sequence of MoO2 nanowhiskers was studied in detail using field emission scanning electron microscopy. X-ray photoelectron spectroscopy and micro-Raman spectroscopy studies confirmed the presence of MoO2 in the as-deposited coating. The changes in the structures of the MoO2 coatings with respect to the growth conditions were studied using X-ray diffraction.

Item Type: Article
Subjects: GENERAL > General
Depositing User: Dr. Harish C. Barshilia
Date Deposited: 11 Nov 2013 08:31
Last Modified: 11 Nov 2013 08:31
URI: http://nal-ir.nal.res.in/id/eprint/11829

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