Ammonia responsive surface wettability switched on indium hydroxide films with micro- and nanostructures

  • Weiqin Zhu
  • , Jin Zhai*
  • , Zhongwei Sun
  • , Lei Jiang
  • *Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

Abstract

Switchable surface wettability that can be tuned reversibly between superhydrophobicity and superhydrophilicity has been successfully realized on indium hydroxide films with micro- and nanostructures. The films are superhydrophobic in the air with a water contact angle of 150.4 ± 0.9° while they turn superhydrophilic with a water contact angle of 0° after storage in an ammonia atmosphere, which means an ammonia responsive surface wettablity switch. The novel surface wettability is ascribed to the multiple surface structures and surface free energy conversion of the films. This kind of smart surface wettability is promising in developing new types of ammonia detectors simply by virtue of the surface wettability conversion.

Original languageEnglish
Pages (from-to)8338-8342
Number of pages5
JournalJournal of Physical Chemistry C
Volume112
Issue number22
DOIs
StatePublished - 5 Jun 2008
Externally publishedYes

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