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讨论了通过解析氮低温吸附等温线获得纳米碳管(CNT)开口中空管内径及其分布的气体吸附法. 通过与电子显微镜分析及Raman振动谱对不同直径CNT表征结果的比较, 证明气体吸附法是表征CNT中空管内径及其分布的有效方法. 其优点表现在: (1) 可以获取较大量样品开口中空管内径分布的全面信息; (2) 测试方法基于中空管中发生的物化(吸附)过程, 结果对中空管特殊理化性能的研究有特别意义; (3) 若与其他表征方法结合可得到较为完整的CNT中空管内外径及其分布参数, 为CNT的理论研究和实际应用提供基础参数.
The gas adsorption method for obtaining the diameter and distribution of the hollow tube of the carbon nanotube (CNT) opening by analyzing the nitrogen cryogenic adsorption isotherm was discussed. The comparison of the characterization results of CNTs with different diameter by electron microscopy and Raman vibrational spectroscopy proved that gas adsorption Method is an effective method to characterize the inner diameter and distribution of CNT hollow tube.The advantages of this method are as follows: (1) The comprehensive information about the inner diameter distribution of the hollow tube in a large sample opening can be obtained; (2) The test method is based on Physicochemical (adsorption) process, the results of the special physical and chemical properties of the hollow tube of special significance; (3) If combined with other characterization methods can be more complete inside and outside the CNT hollow tube diameter and distribution parameters for the theoretical study of CNT And provide practical application of the basic parameters.