Graphene oxide functionalized O-(carboxymethyl)-chitosan membranes: Fabrication using dialysis and applications in water purification

Publication date: 5 October 2018Source: Colloids and Surfaces A: Physicochemical and Engineering Aspects, Volume 554Author(s): Qian Huang, Guihua Li, Mengjun Chen, Shuli DongAbstractThe membranes of O-(carboxymethyl)-chitosan (O-CMC), O-CMC-graphene oxide (GO) and O-CMC-reduced graphene oxide (rGO) are prepared by dialysis method, respectively. The membrane structures and properties are investigated with different techniques. Fourier transform infrared (FT-IR) and X-ray diffraction (XRD) spectra indicate that the composition (O-CMC) of the membranes is protonated. The mechanical strength of these membranes is enhanced with the added amount of GO. These membranes show effective adsorption capacity for dyes and Cu2+ in water, showing that they may be the promising applications for water purification including dye adsorption and selective dialysis.Graphical abstract

Source: Colloids and Surfaces A: Physicochemical and Engineering Aspects - July 11, 2018 Category: Chemistry Source Type: research