期刊
ACS APPLIED MATERIALS & INTERFACES
卷 5, 期 11, 页码 4808-4814出版社
AMER CHEMICAL SOC
DOI: 10.1021/am400299f
关键词
wetting behavior; reversible transition; superhydrophobic; brass; alternating current
资金
- National Natural Science Foundation of China [51071012]
Reversible surface wetting behavior is a hot topic of research because of the potential engineering applications. In the present work, a hierarchical micro/nanostructure is fabricated on brass by alternate current (AC) etching. The superhydrophilic as-prepared etched brass (EB) turns into superhydrophobic after the modification of stearic acid for 1 min. After annealing at 350 degrees C for 5 min, the superhydrophobic modified EB surface becomes superhydrophilic again. Furthermore, the annealed EB can restore the superhydrophobicity with the remodification of stearic acid. The wetting transition is realized by stearic acid modification and annealing rapidly in 6 min. The wetting transition mechanism is discussed based on the surface chemical analysis. This method is facile and suitable for the construction of large-scale and complex brass surfaces with tunable wetting behaviors.
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