Facile Fabrication of Anodic Alumina Rod-Capped Nanopore Films with Condensate Microdrop Self-Propelling Function

作者：Juan Li, Wenjing Zhang, Yuting Luo, Jie Zhu, Xuefeng Gao · 发表于：ACS Applied Materials & Interfaces · 年份：2015 · DOI：10.1021/acsami.5b05564 · 被引用次数：45 · 研究领域：Anodic Oxide Films and Nanostructures、Surface Modification and Superhydrophobicity、Nanopore and Nanochannel Transport Studies

We report that aluminum surfaces can be endowed with condensate microdrop self-propelling (CMDSP) function by one-step voltage-rising mild anodization in hot phosphoric acid solution followed by fluorosilane modification. Via regulating reaction parameters, we can achieve anodic alumina self-standing rod-capped nanopore films and minimize their solid-liquid interface adhesion. Such low-adhesive nanostructured film owns remarkable CMDSP function, especially to condensate microdrops with sizes below 50 μm, differing from usual gravity-driven dropwise condensation on flat aluminum surfaces. Clearly, this work offers a facile, efficient, and industry-compatible approach to processing CMDSP aluminum materials, which is significant for developing innovative energy-saving air-conditioner heat exchangers.