title: Graphene Oxide Membranes with Strong Stability in Aqueous Solutions and Controllable Lamellar Spacing.
abstract: Graphene oxide (GO) membranes become emerging efficient filters for molecular or ionic separation due to their well-defined two-dimensional nanochannels formed by closely spaced GO sheets and tunable physicochemical properties. The stability of GO membranes in aqueous solutions is a prerequisite for their applications. Here we show a novel and easy strategy for fabricating GO membranes with strong stability in aqueous solutions and controllable lamellar spacing by simply doping with partially reduced graphene oxide (prGO) sheets. With our prGO-doping strategy, the interlayer stabilizing force in GO membranes is enhanced due to the weakened repulsive hydration and enhanced π-π attraction between GO sheets; as a result, the fabricated GO membranes are featured with controllable lamellar spacing and extraordinary stability in water or even strong acid and base solutions as well as strong mechanical properties, which will expand the application scope of GO membranes and provide ever better performances in their applications with aqueous solution environments.
authors.affiliation: School of Chemical Engineering, Sichuan University , No. 24, Southern 1 Section, Yihuan Road, Chengdu, Sichuan 610065, People's Republic of China.
authors.forename: Yue-Heng
authors.initials: YH
authors.lastname: Xi
authors.affiliation: School of Chemical Engineering, Sichuan University , No. 24, Southern 1 Section, Yihuan Road, Chengdu, Sichuan 610065, People's Republic of China.
authors.forename: Jia-Qi
authors.initials: JQ
authors.lastname: Hu
authors.affiliation: School of Chemical Engineering, Sichuan University , No. 24, Southern 1 Section, Yihuan Road, Chengdu, Sichuan 610065, People's Republic of China.
authors.forename: Zhuang
authors.initials: Z
authors.lastname: Liu
authors.affiliation: School of Chemical Engineering, Sichuan University , No. 24, Southern 1 Section, Yihuan Road, Chengdu, Sichuan 610065, People's Republic of China.
authors.forename: Rui
authors.initials: R
authors.lastname: Xie
authors.affiliation: School of Chemical Engineering, Sichuan University , No. 24, Southern 1 Section, Yihuan Road, Chengdu, Sichuan 610065, People's Republic of China.|State Key Laboratory of Polymer Materials Engineering, Sichuan University , Chengdu, Sichuan 610065, People's Republic of China.
authors.forename: Xiao-Jie
authors.initials: XJ
authors.lastname: Ju
authors.affiliation: School of Chemical Engineering, Sichuan University , No. 24, Southern 1 Section, Yihuan Road, Chengdu, Sichuan 610065, People's Republic of China.
authors.forename: Wei
authors.initials: W
authors.lastname: Wang
authors.affiliation: School of Chemical Engineering, Sichuan University , No. 24, Southern 1 Section, Yihuan Road, Chengdu, Sichuan 610065, People's Republic of China.|State Key Laboratory of Polymer Materials Engineering, Sichuan University , Chengdu, Sichuan 610065, People's Republic of China.|Jiangsu National Synergetic Innovation Center for Advanced Materials (SICAM) , Nanjing, Jiangsu 211816, People's Republic of China.
authors.forename: Liang-Yin
authors.initials: LY
authors.lastname: Chu
keywords: graphene oxide; lamellar spacings; membranes; nanochannels; water-stability