The effect of chemical functionalisation on nanoporous energy absorption system |
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| Authors: | Jinhuan Pu Guangxi Li Haoyu Sun Dong Niu |
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| Institution: | 1. MOE Key Laboratory of Thermo-Fluid Science and Engineering, School of Energy and Power Engineering, Xi’an Jiaotong University, Xi’an, P.R. China;2. Laboratory of Science and Technology on Liquid Rocket Engine, Xi’an Aerospace Propulsion Institute, Xi’an, P.R. China |
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| Abstract: | The mechanism of water infiltration into a single-walled carbon nanotube (SWCNT) was investigated based on the molecular dynamics simulation. The influence of chemical functionalization treatment on unsaturated carbon atoms at the entrance of a SWCNT was explored. The chemical functionalisation treatment with hydroxyl groups can effectively reduce the critical pressure barrier and facilitate water molecules to invade a SWCNT. Conversely, the hydrogen groups can intensify the non-wetting ability of a SWCNT. In addition, the hydrogenated entrance system is of higher recovery performance under dynamic loading, while the system with hydroxylated entrance shows poor performance. The observed unique mechanisms provide a possible method in energy absorption and conversion. |
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| Keywords: | Carbon nanotube infiltration pressure chemical functionalisation recovery performance |
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