Journal
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
Volume 16, Issue 41, Pages 22717-22722Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c4cp03263b
Keywords
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Funding
- National Research Foundation of Korea (NRF) - Ministry of Science, ICT and Future Planning, Korea (MSIP) [NRF-2012R1A2A1A01003537]
- Center for Advanced Soft Electronics under the Global Frontier Research Program of the Ministry of Science, ICT and Future Planning, Korea (MSIP) [NRF-2012M3A6A5055744]
- National Research Foundation Korea (NRF) - Korean government (MEST) [2013-059738]
- Nano Material Technology Development Program [2012M3A7B4049807]
- Global Frontier R&D Program at the Center for Hybrid Interface Materials (HIM), through the National Research Foundation of Korea (NRF) - Ministry of Science, ICT and Future Planning [2013-073298]
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Porous materials have provided us unprecedented opportunities to develop emerging technologies such as molecular storage systems and separation mechanisms. Pores have also been used as supports to contain gas hydrates for the application in gas treatments. Necessarily, an exact understanding of the properties of gas hydrates in confining pores is important. Here, we investigated the formation of CO2, CH4 and N-2 hydrates in non-interlamellar voids in graphene oxide (GO), and their thermodynamic behaviors. For that, low temperature XRD and P-T traces were conducted to analyze the water structure and confirm hydrate formation, respectively, in GO after its exposure to gaseous molecules. Confinement and strong interaction of water with the hydrophilic surface of graphene oxide reduce water activity, which leads to the inhibited phase behavior of gas hydrates.
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