Next Article in Journal
Calculating the Emissions Impacts of Waste Electronics Recycling in Ontario, Canada
Next Article in Special Issue
Graphene-Oxide Nano Composites for Chemical Sensor Applications
Previous Article in Journal
Electrochemical Li Storage Properties of Carbon-Rich B–C–N Ceramics
Previous Article in Special Issue
Probing the Catalytic Activity of Tin-Platinum Decorated Graphene; Liquid Phase Oxidation of Cyclohexane
Article Menu

Export Article

Open AccessArticle
C 2016, 2(2), 10; doi:10.3390/c2020010

High Performance of Alkaline Anion-Exchange Membranes Based on Chitosan/Poly (vinyl) Alcohol Doped with Graphene Oxide for the Electrooxidation of Primary Alcohols

1
Institute of Electrochemistry, University of Alicante, Alicante 03080, Spain
2
Department of Chemical and Biomolecular Engineering, University of Cantabria, Santander 39005, Spain
3
Department of Physical Chemistry, University of Alicante, Alicante 03080, Spain
*
Author to whom correspondence should be addressed.
Academic Editor: Vijay Kumar Thakur
Received: 20 February 2016 / Revised: 18 March 2016 / Accepted: 24 March 2016 / Published: 1 April 2016
(This article belongs to the Special Issue Graphene Nanocomposite for Advanced Applications)
View Full-Text   |   Download PDF [2788 KB, uploaded 1 April 2016]   |  

Abstract

Mixed matrix membranes (MMM) based on chitosan (CS) and poly (vinyl) alcohol (PVA) with a 50:50 w/w ratio doped with graphene oxide (GO) are prepared by solution casting and characterized by scanning electron microscopy (SEM), X-ray diffraction (XRD), thermogravimetric analysis (TGA), water uptake, alcohol permeability, ion exchange capacity (IEC) and OH conductivity measurements. The SEM analysis revealed a dense MMM where the GO nanosheets were well dispersed over the entire polymer matrix. The incorporation of GO increased considerably the thermal stability of the CS:PVA membrane. The GO-based MMM exhibited a low conductivity of 0.19 mS·cm−1 in part because the GO sheets did not change the crystallinity of the CS:PVA matrix. The reinforced structure created by the hydrogen bonds between the GO filler and the CS:PVA matrix resulted to be a good physical barrier for alcohol permeability, achieving a coefficient of diffusion of 3.38 × 10−7 and 2.43 × 10−7 cm2·s−1 after 60 and 120 min, respectively, thus avoiding additional alcohol crossover. Finally, the electrochemical performance of the GO-based MMM in the electrooxidation of propargyl alcohol was investigated in a Polymer Electrolyte Membrane Electrochemical Reactor (PEMER) under alkaline conditions, through the polarization curve and the electrolysis reactions, showing a performance comparable to anion-exchange commercial membranes. View Full-Text
Keywords: graphene oxide; graphene composite electrolyte membrane; chitosan; poly (vinyl) alcohol; alkaline anion-exchange membrane (AAEM); alcohol permeability graphene oxide; graphene composite electrolyte membrane; chitosan; poly (vinyl) alcohol; alkaline anion-exchange membrane (AAEM); alcohol permeability
Figures

This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

Scifeed alert for new publications

Never miss any articles matching your research from any publisher
  • Get alerts for new papers matching your research
  • Find out the new papers from selected authors
  • Updated daily for 49'000+ journals and 6000+ publishers
  • Define your Scifeed now

SciFeed Share & Cite This Article

MDPI and ACS Style

García-Cruz, L.; Casado-Coterillo, C.; Irabien, Á.; Montiel, V.; Iniesta, J. High Performance of Alkaline Anion-Exchange Membranes Based on Chitosan/Poly (vinyl) Alcohol Doped with Graphene Oxide for the Electrooxidation of Primary Alcohols. C 2016, 2, 10.

Show more citation formats Show less citations formats

Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Related Articles

Article Metrics

Article Access Statistics

1

Comments

[Return to top]
C EISSN 2311-5629 Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert
Back to Top