利用银镜反应制备梯度润湿性表面

Fabrication of Wettability Gradient Surface by Silver Mirror Reaction

利用工艺简单的银镜反应制备了润湿性均一的纳米银表面。该表面具有一定的粗糙度,随着与低表面能的正十二烷基硫醇自组装时间的延长,银表面的接触角逐步增大,并达到超疏水性。通过调节正十二烷基硫醇溶液的浓度或滴加速度,能在同一银表面的不同位置实现从疏水性到超疏水性的梯度润湿性调控。

Silver mirror reaction is used as a facile method to synthesize nano-silver surface with uniform wetta-bility. The rough surfaces exhibit hydrophobic properties. A further self-assembly with dodecanethiol monolayer can increase contact angles on silver surfaces and lead to a superhydrophobic behavior. A gradient wettability ranging from hydrophobicity to superhydrophobicity in different positions can be achieved on one silver surface by adjusting the concentration or adding the rate of dodecanethiol solution.