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Preparation of large,ultra-flexible and free-standing nanomembranes of metal oxide-polymer composite and their gas permeation properties

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Clean Energy 2017年第1期1卷 80-89页

作者： Anteneh Mersha roman selyanchyn Shigenori Fujikawa Graduate School of Engineering Kyushu UniversityFukuoka 819-0395Japan WPI International Institute for Carbon-Neutral Energy Research(WPI-I2CNER) Kyushu UniversityFukuoka 819-0395Japan Center for Molecular Systems(CMS) Kyushu UniversityFukuoka 819-0395Japan Laboratory for Chemistry and Life Science Tokyo Institute of Technology4259 NagatsutachoMidori-kuYokohama226-8503Japan

In this work,fabrication of free-standing nanomembranes of metal oxide(MO_(x))and polymers by simple spin-coating method is ***,double-layer nanomembranes containing MO_(x) and epoxy resin of polyethyleneimine and poly[(o-cresyl glycidyl ether)-co-formaldehyde]were ***-standing nanomembranes were successfully prepared,but defects formed in the metal oxide nanolayer during sharp bending of the *** overcome fragility of MO_(x) nanolayer,poly(vinyl alcohol)nanolayers were introduced between MO_(x) nanolayers by layer-by-layer(LbL)assembly *** LbL nanomembrane was also free-standing and was highly flexible during macroscopic membrane *** after transfer of the LbL nanomembrane onto a porous support,it did not have apparent cracks,confirmed by scanning electron microscopy(SEM).The LbL nanomembrane sustained low gas permeance,confirming the absence of significant defects,although it shows excellent *** believe that the presented LbL nanomembrane could be a platform useful for the design of molecular nanochannels,which is the next challenge for efficient gas separation.

关键词： nanomembranes free-standing film ultrathin film layer-by-layer assembly metal oxide gas permeation

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