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UV‐Resistant and Thermally Stable Superhydrophobic CeO 2 Nanotubes with High Water Adhesion
Author(s) -
Li XuePing,
Sun YaLi,
Xu YaoYi,
Chao ZiSheng
Publication year - 2018
Publication title -
small
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 3.785
H-Index - 236
eISSN - 1613-6829
pISSN - 1613-6810
DOI - 10.1002/smll.201801040
Subject(s) - materials science , contact angle , adhesion , nanotube , ultraviolet , adhesive , irradiation , composite material , chemical engineering , cerium , nanotechnology , hydrothermal circulation , thermal stability , carbon nanotube , layer (electronics) , metallurgy , physics , optoelectronics , nuclear physics , engineering
A novel type of sticky superhydrophobic cerium dioxide (CeO 2 ) nanotube material is prepared by hydrothermal treatment without any chemical modification. A water droplet on the material surface shows a static water contact angle of about 157° but the water droplet is pinned on the material surface even when the material surface is turned upside down. Interestingly, the as‐prepared CeO 2 nanotube material displays durable superhydrophobicity and enhanced adhesion to water under ultraviolet (UV) light irradiation. Importantly, this change in water adhesion can be reversed by heat treatment to restore the original adhesive value of 20 µL. Further, the maximum volume of the water droplet adhered on the material surface of CeO 2 nanotubes can be regulated without loss of superhydrophobicity during the heating treatment/UV‐irradiation cycling. Meanwhile, the superhydrophobic CeO 2 nanotube material shows remarkable thermal stability even at temperatures as high as 450 °C, long‐term durability in chemical environment, and air‐storage and good resistance to oily contaminant. Finally, the potential application in no‐loss water transportation of this sticky superhydrophobic CeO 2 material is demonstrated.