Abstract
We have introduced water-in-oil emulsion systems to generate confining geometries for the self-organization of monodisperse silica nanospheres as building block particles. Then, through the slow evaporation of emulsion phases by heating, these nanospheres were packed into structural colloids such as raspberry-shaped micro-particles. The suspension of colloidal clusters was deposited onto glass substrate followed by surface modification of fluorinecontaining silane coupling agent to produce superhydrophobic surface with dual scale roughness. Similar self-assembly approach was employed to fabricate macroporous micro-particles from composite micro-particles of polystyrene microspheres and antimony-doped tin oxide nanoparticles by calcination. After deposition of the porous particles and fluorine treatment with silane coupling agent, superhydrophobic surfaces which have potential applications such as self-cleaning property could be obtained with contact angle of water larger than 150°.
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Cho, YS., Moon, J.W., Lim, D.C. et al. Fabrication of superhydrophobic surfaces using structured colloids. Korean J. Chem. Eng. 30, 1142–1152 (2013). https://doi.org/10.1007/s11814-013-0031-x
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DOI: https://doi.org/10.1007/s11814-013-0031-x