Effect of nanoscale curvature sign and bundle structure on supercritical H2 and CH4 adsorptivity of single wall carbon nanotube
Effect of nanoscale curvature sign and bundle structure on supercritical H2 and CH4 adsorptivity of single wall carbon nanotube
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DOI：
10.1007/s10450-011-9358-y
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发表时间：
2011-03
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通讯作者：
M. Yamamoto;T. Itoh;H. Sakamoto;T. Fujimori;K. Urita;Y. Hattori;T. Ohba;H. Kagita;H. Kanoh;S. Niimura;K. Hata;K. Takeuchi;M. Endo;F. Rodríguez-Reinoso;K. Kaneko
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作者：
M. Yamamoto;T. Itoh;H. Sakamoto;T. Fujimori;K. Urita;Y. Hattori;T. Ohba;H. Kagita;H. Kanoh;S. Niimura;K. Hata;K. Takeuchi;M. Endo;F. Rodríguez-Reinoso;K. Kaneko
测定了单壁碳纳米管（SWCNT）内外管壁对超临界CH 4和H2的吸附性能。负曲率的内管壁对超临界CH 4和H2的吸附率高于正曲率的外管壁，这是由于它们之间的相互作用势差造成的。细单壁碳纳米管束制备的毛细管力辅助干燥处理，使用甲苯或甲醇，以产生具有最强的相互作用潜力的CH 4或H2的间隙孔隙空间;捆绑的单壁碳纳米管表现出最高的吸附超临界CH 4和H2。这清楚地表明，这些纳米结构的单壁碳纳米管的超临界气体吸附性是至关重要的。
The adsorptivities of supercritical CH4and H2of the external and internal tube walls of single wall carbon nanotube (SWCNT) were determined. The internal tube wall of the negative curvature showed the higher adsorptivities for supercritical CH4and H2than the external tube wall of the positive curvature due to their interaction potential difference. Fine SWCNT bundles were prepared by the capillary force-aided drying treatment using toluene or methanol in order to produce the interstitial pore spaces having the strongest interaction potential for CH4or H2; the bundled SWCNT showed the highest adsorptivity for supercritical CH4and H2. It was clearly shown that these nanostructures of SWCNTs are crucial for supercritical gas adsorptivity.