Journal
JOURNAL OF PHYSICAL CHEMISTRY C
Volume 120, Issue 45, Pages 26061-26066Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acs.jpcc.6b06940
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Funding
- National Basic Research Program of China [2015CB250904]
- National Natural Science Foundation of China [51302321]
- Shandong Provincial Natural Science Foundation, China [2014ZRE28048]
- Fundamental Research Funds for the Central Universities [14CX0222A, 15CX05049A, 15CX06073A]
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Graphene oxide (GO), as an ultrathin, high-flux, and energy-efficient separation membrane, has shown great potential for CO, capture. In this study, using molecular dynamics simulations, the separation of CO, and N-2 through the interlayer gallery of GO membranes was studied. The preferential adsorption of CO, in the GO channel derived from their strong interaction is responsible for the selectivity of CO2 over N-2. Furthermore, the influences of interlayer spacing, oxidization degree, and channel length on the separation of CO2/N-2 were investigated. Our studies unveil the underlying mechanism of CO2/N-2 separation in the interlayer GO channel, and the results may be helpful in guiding rational design of GO membranes for gas separation.
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