Enhanced Separation Performance for CO2 Gas of Mixed-Matrix Membranes Incorporated with TiO2/Graphene Oxide: Synergistic Effect of Graphene Oxide and Small TiO2 Particles on Gas Permeability of Membranes

© 2017 American Chemical Society. This study combines the adsorption layer nanoreactor synthesis (ALRS) method with in situ polymerization to prepare high-performance separation hybrid membranes containing TiO 2 -graphene oxide (TiO 2 -GO). TiO 2 nanoparticles were initially generated on the GO surface through ALRS. Hybrid membranes containing A-TiO 2 -GO were then prepared using in situ polymerization. The inhibition of aggregation by the strong combination between the small TiO 2 particles and the GO surface led to a homogeneous distribution of TiO 2 -GO in the polymeric matrix. This, in turn, caused a significant improvement of the membranes performance for CO 2 separation. Both the small TiO 2 particles and GO played an important role in increasing the gas separation performance of membranes. In particular, TiO 2 small particles, with a polar surface, promoted the CO 2 diffusion through the membranes, while GO addition significantly increased the solubility selectivity of the membranes toward CO 2 .

Publication year:2017

BOF-keylabel:yes

IOF-keylabel:yes

BOF-publication weight:1

CSS-citation score:1

Authors:International

Authors from:Higher Education