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    Preparation of disk-like particles with micro/nano hierarchical structures

    Year: 2013

    Journal: Journal of Colloid and Interface Science, Volume 408, 15 October 2013, Pages 1–5, 20131119

    Authors: Zhen Meng , Wenbo Yang, Pengpeng Chen , Weina Wang , Xudong Jia, , Kai Xi,

    Organizations: State Key Laboratory of Coordination Chemistry, Nanjing University, Nanjing 210093, PR China, Department of Polymer Science and Engineering, Nanjing University, Nanjing 210093, PR China, Nanjing National Laboratory of Microstructures, Nanjing University, Nanjing 210093, PR China

    A facile, reproductive method has been successfully developed to produce disk-like microparticles self-assembled from monodispersed hybrid silica nanoparticles under certain circumstance. The disk-like microparticles with micro/nano hierarchical structures could be obtained in large amount under a mild condition and further used to biomimetic design of the superhydrophobic surface of lotus leaf. After traditional surface modification with dodecyltrichlorosiliane, the static contact angle of water on the surface with micro/nano hierarchical structure could reach 168.8°. The method of surface modification could be further simplified by click reaction with the introduction of thiol groups under mild condition. The present strategy for constructing the surface with micro/nano hierarchical structures offers the advantage of simple and large area fabrication, which enables a variety of superhydrophobic applications.