Superhydrophobic surfaces via controlling the morphology of ZnO micro/nano complex structure

doi:10.1088/1674-1056/19/5/056701

中国物理B ›› 2010, Vol. 19 ›› Issue (5): 56701-056701.doi: 10.1088/1674-1056/19/5/056701

Superhydrophobic surfaces via controlling the morphology of ZnO micro/nano complex structure

公茂刚, 许小亮, 杨周, 刘艳松, 刘玲

Department of Physics, University of Science and Technology of China, Hefei 230026, China

收稿日期:2009-10-28 修回日期:2009-11-23 出版日期:2010-05-15 发布日期:2010-05-15
基金资助:
Project supported by the 973 Program of China (Grant No.~2006CB302900) and National Natural Science Foundation of China (Grant No.~50872129).

Superhydrophobic surfaces via controlling the morphology of ZnO micro/nano complex structure

Gong Mao-Gang(公茂刚)^†, Xu Xiao-Liang(许小亮)^‡, Yang Zhou(杨周), Liu Yan-Song(刘艳松), and Liu Ling(刘玲)

Department of Physics, University of Science and Technology of China, Hefei 230026, China

Received:2009-10-28 Revised:2009-11-23 Online:2010-05-15 Published:2010-05-15
Supported by:
Project supported by the 973 Program of China (Grant No.~2006CB302900) and National Natural Science Foundation of China (Grant No.~50872129).

摘要/Abstract

摘要： ZnO micro/nano complex structure films, including reticulate papillary nodes, petal-like and flake-hole, have been self-assembled by a hydrothermal technique at different temperatures without metal catalysts. The wettability of the above film surfaces was modified with a simple coating of heptadecafluorodecyltrimethoxy-silane in toluene. After modifying, the surface of ZnO film grown at 50~${^\circ}$C was converted from superhydrophilic with a water contact angle lower than 5$^{\circ}$ to superhydrophobic with a water contact angle of 165$^{\circ}$. Additionally, the surface of reticulate papillary nodes ZnO film grown at 100~${^\circ}$C had excellent superhydrophobicity, with a water contact angle of 173$^{\circ}$ and a sliding angle lower than 2$^{\circ}$. Furthermore, the water contact angle on the surface of petal-like and flake-hole ZnO films grown at 150~${^\circ}$C and 200~${^\circ}$C were found to be 140$^{\circ}$ and 120$^{\circ}$, respectively. The wettability for the samples was found to depend strongly on the surface morphology which results from the growth temperature.

Abstract: ZnO micro/nano complex structure films, including reticulate papillary nodes, petal-like and flake-hole, have been self-assembled by a hydrothermal technique at different temperatures without metal catalysts. The wettability of the above film surfaces was modified with a simple coating of heptadecafluorodecyltrimethoxy-silane in toluene. After modifying, the surface of ZnO film grown at 50 ${^\circ}$C was converted from superhydrophilic with a water contact angle lower than 5$^{\circ}$ to superhydrophobic with a water contact angle of 165$^{\circ}$. Additionally, the surface of reticulate papillary nodes ZnO film grown at 100 ${^\circ}$C had excellent superhydrophobicity, with a water contact angle of 173$^{\circ}$ and a sliding angle lower than 2$^{\circ}$. Furthermore, the water contact angle on the surface of petal-like and flake-hole ZnO films grown at 150 ${^\circ}$C and 200 ${^\circ}$C were found to be 140$^{\circ}$ and 120$^{\circ}$, respectively. The wettability for the samples was found to depend strongly on the surface morphology which results from the growth temperature.

Key words: hydrothermal, superhydrophobic, ZnO, micro/nano complex structure

中图分类号: (Thin film structure and morphology)

68.55.-a

81.16.Dn (Self-assembly) 68.55.A- (Nucleation and growth) 68.37.Hk (Scanning electron microscopy (SEM) (including EBIC)) 68.08.Bc (Wetting)

公茂刚, 许小亮, 杨周, 刘艳松, 刘玲. Superhydrophobic surfaces via controlling the morphology of ZnO micro/nano complex structure[J]. 中国物理B, 2010, 19(5): 56701-056701.

Gong Mao-Gang(公茂刚), Xu Xiao-Liang(许小亮), Yang Zhou(杨周), Liu Yan-Song(刘艳松), and Liu Ling(刘玲). Superhydrophobic surfaces via controlling the morphology of ZnO micro/nano complex structure[J]. Chin. Phys. B, 2010, 19(5): 56701-056701.

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Superhydrophobic surfaces via controlling the morphology of ZnO micro/nano complex structure

Superhydrophobic surfaces via controlling the morphology of ZnO micro/nano complex structure

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