通过涂覆有ZnO薄膜的碳纳米管制备的稳定超疏水表面。

Stable superhydrophobic surface via carbon nanotubes coated with a ZnO thin film.

作者信息

Huang L, Lau S P, Yang H Y, Leong E S P, Yu S F, Prawer S

机构信息

School of Electrical and Electronic Engineering, Nanyang Technological University, Nanyang Avenue, Singapore 639798.

出版信息

J Phys Chem B. 2005 Apr 28;109(16):7746-8. doi: 10.1021/jp046549s.

DOI:10.1021/jp046549s

PMID:16851899

Abstract

We report the formation of a stable superhydrophobic surface via aligned carbon nanotubes (CNTs) coated with a zinc oxide (ZnO) thin film. The CNT template was synthesized by chemical vapor deposition on an Fe-N catalyst layer. The ZnO film, with a low surface energy, was deposited on the CNT template by the filtered cathodic vacuum arc technique. Contact angle measurement reveals that the surface of the ZnO-coated CNTs is superhydrophobic with water contact angle of 159 degrees . Unlike the uncoated CNTs surface, the ZnO-coated CNTs surface shows no sign of water seepage even after a prolonged period of time. The wettability of the surface can be reversibly changed from superhydrophobicity to hydrophilicity by alternation of ultraviolet (UV) irradiation and dark storage.

摘要

我们报道了通过在排列好的碳纳米管（CNT）上涂覆氧化锌（ZnO）薄膜形成稳定的超疏水表面。碳纳米管模板是通过化学气相沉积法在铁 - 氮催化剂层上合成的。具有低表面能的氧化锌薄膜通过过滤阴极真空电弧技术沉积在碳纳米管模板上。接触角测量表明，涂覆氧化锌的碳纳米管表面具有超疏水性，水接触角为159度。与未涂覆的碳纳米管表面不同，即使经过长时间，涂覆氧化锌的碳纳米管表面也没有水渗漏的迹象。通过交替进行紫外线（UV）照射和黑暗储存，表面的润湿性可以从超疏水性可逆地转变为亲水性。