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10 Electrospun Nanofibrous Sorbents and Membranes for Carbon Dioxide Capture 261 modification strategies. For example, surface modifying nanofibrous materials using layer-by-layer nano-assembly technology [44, 45] by depositing a CO2-adsorbing amine polymer will be a potential method to solve this problem. (2) The gas flows treated in practical CO2 capture always involve water, and it is not economically feasible to dry the flue gas by an additional process before separation. Therefore, adsorption materials require a high tolerance to water or superhydrophobicity. However, quite few investigations of the effect of water on the capture performances of nanofibrous adsorbents have been reported. Addressing this issue should include research on both the physical co-adsorption of water in the nanofibrous materials and the material structure and functional design. (3) In parallel with experimental studies, computational modeling methods must be further developed as a tool to predict the performance of nanofibrous sorbents which are proposed for a given sep- aration process. Despite the numerous challenges surrounding CO2 removal, further understanding of fibrous sorbent structure-property relationships and the subsequent improvement of sorbent performance under realistic operating conditions will likely allow for the realization of nanofibrous sorbents in practical CO2 capture processes in the near future. Acknowledgments This technical effort was performed with support of the US Department of Energy, National Energy Technology Laboratory’s ongoing research in carbon management under RES contract DE-FE0004000. Support from WV NASA EPSCoR was also acknowledged. Any opinions, findings, conclusions, or recommendations expressed in this material are those of the author(s) and do not necessarily reflect the views of the funding agencies or their institutions. The authors thank Suzanne Danley for proofreading. References 1. Du N, Park HB, Dal-Cin MM, Guiver MD (2012) Advances in high permeability poly- meric membrane materials for CO2 separations. Energy Environ Sci 5(6):7306–7322. doi:10.1039/c1ee02668b 2. Xing W, Liu C, Zhou Z, Zhang L, Zhou J, Zhuo S, Yan Z, Gao H, Wang G, Qiao SZ (2012) Superior CO2 uptake of N-doped activated carbon through hydrogen-bonding interaction. Energy Environ Sci 5(6):7323–7327. doi:10.1039/c2ee21653a 3. Banerjee R, Phan A, Wang B, Knobler C, Furukawa H, O’Keeffe M, Yaghi OM (2008) High-throughput synthesis of zeolitic imidazolate frameworks and application to CO2 capture. Science 319(5865):939–943. doi:10.1126/science.1152516 4. Liu J, Thallapally PK, McGrail BP, Brown DR (2012) Progress in adsorption-based CO2 cap- ture by metal-organic frameworks. Chem Soc Rev 41(6):2308–2322. doi:10.1039/c1cs15221a 5. Jiang B, Wang X, Gray ML, Duan Y, Luebke D, Li B (2013) Development of amino acid and amino acid-complex based solid sorbents for CO2 capture. Appl Energy 109:112–118, doi: http://dx.doi.org/10.1016/j.apenergy.2013.03.070 6. Choi S, Drese JH, Jones CW (2009) Adsorbent materials for carbon dioxide capture from large anthropogenic point sources. ChemSusChem 2(9):796–854 7. Li B, Duan Y, Luebke D, Morreale B (2013) Advances in CO2 capture technology: a patent review. Appl Energy 102:1439–1447, doi: http://dx.doi.org/10.1016/j.apenergy.2012.09.009 8. Lee ZH, Lee KT, Bhatia S, Mohamed AR (2012) Post-combustion carbon dioxide capture: evolution towards utilization of nanomaterials. Renew Sust Energy Rev 16(5):2599–2609. doi:10.1016/j.rser.2012.01.077PDF Image | Electrospun Nanofibrous Sorbents
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