Materials Horizons-Simply Realizing Cost-effective “Water Diode” JanusMembranes for Multifunctional Smart Applications
作者：Zhenxing Wang,? a Xiaobin Yang,? a Zhongjun Cheng,b Yuyan Liu, a Lu Shao, a and Lei Jiang
關鍵字：Janus Membrane, Multifunctional
論文來源：期刊
發表時間：2017年
Multifunctional JMs can be cost-effectively obtained via a simple
coating and peeling strategy for smart uses in water collection,
lossless transportation, decontamination, on-off control, and
microreaction. The novel strategy will accelerate the evolution of
Janus membranes (JMs) from a scientific concept to useable
materials for the “real” world.
Janus membranes (JMs) with unidirectional liquid permeation have attracted great
attentions. However, current strategies for the fabrication of JMs still face many
obstacles such as tedious processes, harsh conditions, or high cost, and the available
JMs are typically unifunctional, limiting their broad applications. Herein, based on
commercial composite membranes, a simple coating and peeling strategy was
designed for realizing cost-effective multifunctional JMs. Coating can endow the
commercial membrane with designed functionality; while peeling can render it
asymmetric wettability, which will finally transform commercial membrane into
multifunctional smart JMs. As demonstration, a magnetic JM derived from this
strategy can be utilized for magnetic-driven collection, lossless transportation and
decontamination of wastewater, and a pH-responsive JM can realize responsive gating
and release of water droplets. Our novel strategy can act as a versatile platform for
fabrication of diverse JMs, accelerating the evolution of JMs from unifunctional
materials to multifunctional devices with advanced smart applications for the “real”
world.