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Issue 91, 2016, Issue in Progress
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Incorporation of CO2 philic moieties into a TiO2 nanomembrane for preferential CO2 separation

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Abstract

Here we report a preferential CO2 separation membrane consisting of a nanometer-thick TiO2 layer incorporated with phtalic acid (PA) molecules on polydimethylsiloxane (PDMS) (PA@TiO2/PDMS). Incorporated PAs in TiO2 act as CO2-philic pores for preferential CO-2 permeation over nitrogen. CO2 binding to the PA incorporated in TiO2 is confirmed by the density functional theory calculation (DFT). As a result, membranes with of PA@TiO2 layer demonstrated much higher selectivity to CO2 for mixed CO2/N2 gas separation compared to a conventional PDMS membrane. The exceptional selectivity of the composite layer alone (>150) was estimated by a resistance model.

Graphical abstract: Incorporation of CO2 philic moieties into a TiO2 nanomembrane for preferential CO2 separation

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Article information


Submitted
19 Jul 2016
Accepted
10 Sep 2016
First published
12 Sep 2016

RSC Adv., 2016,6, 88664-88667
Article type
Communication

Incorporation of CO2 philic moieties into a TiO2 nanomembrane for preferential CO2 separation

R. Selyanchyn, A. Staykov and S. Fujikawa, RSC Adv., 2016, 6, 88664
DOI: 10.1039/C6RA18419G

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