In:
Angewandte Chemie, Wiley, Vol. 132, No. 32 ( 2020-08-03), p. 13539-13545
Abstract:
Superwetting membranes with responsive properties have attracted heightened attention because of their fine‐tunable surface wettability. However, their functional diversity is severely limited by the “black‐or‐white” wettability transition. Herein, we describe a coating strategy to fabricate multifunctional responsive superwetting membranes with SiO 2 /octadecylamine patterns. The adjustable patterns in the responsive region are the key factor for functional diversity. Specifically, the coated part of the membrane displayed a superhydrophobicity/superhydrophilicity transition at different pH values, whereas the uncoated part exhibited invariant superhydrophilicity. On the basis of this anisotropy/isotropy transition, the membranes can serve as either responsive permeable membranes or signal‐expression membranes, thus enabling the responsive separation and permeation of liquids with satisfactory separation efficiency ( 〉 99.90 %) and flux (ca. 60 L m −2 h), as well as real‐time liquid signal expression with alterable signals.
Type of Medium:
Online Resource
ISSN:
0044-8249
,
1521-3757
DOI:
10.1002/ange.v132.32
DOI:
10.1002/ange.202005030
Language:
English
Publisher:
Wiley
Publication Date:
2020
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