Quenching of photocatalytic activity and enhancement of photostability of ZnO particles by polydimethysiloxane coating |
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| Authors: | Myung-Geun Jeong Hyun Ook Seo Kwang-Dae Kim Dae Han Kim Young Dok Kim Dong Chan Lim |
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| Affiliation: | (1) Department of Chemistry, Sungkyunkwan University, Suwon, 440-746, Korea;(2) Materials Processing Division, Korea Institute of Materials Science, Changwon, 641-010, Korea; |
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| Abstract: | ZnO particles with a size range of 50–150 nm were coated with polydimethylsiloxane (PDMS) with a thin film thickness of 3–4 nm
using a simple ambient-pressure chemical vapor deposition method. Surfaces consisting of the PDMS-coated ZnO nanoparticles
were found to be superhydrophobic with a water contact angle >160°. The superhydrophobicity was sustained in the presence
of UV light. Photocatalytic activity and photocorrosion of ZnO were nearly completely quenched in the presence of PDMS-coating.
It is suggested that our PDMS-coating can be of potential interest for the application of ZnO in UV protection agents and
energy and electronic devices. |
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