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.
Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
