Characterization of stable hydrophobic carbon coating and its application in removing organic pollutants

Polydimethylsiloxane (PDMS) thin films were deposited on Ni particles with a mean size of ∼1 μm using chemical vapor deposition method. The thin films consisting of these PDMS-covered Ni particles showed a water contact angle higher than 160°, corresponding to the superhydrophobicity. These superhydrophobic films were found to be resistant toward acidic and basic media. The PDMS-covered Ni particles showed high affinity toward non-polar organic solvent such as toluene. Together with an external magnetic field, the PDMS-covered Ni can be used for separating water and toluene from a water/toluene heterogeneous mixture.

► Polydimethylsiloxane thin film was fabricated on Ni nanoparticles using chemical vapor deposition.
► Surfaces consisting of these coated Ni particles showed superhydrophobicity.
► Superhydrophobicity was sustained under acidic and basic environments.
► Potential application in removing oil from water is expected.