Adsorption of organic solvent vapours on carbon nanotubes, few-layer graphene nanoflakes and their nitrogen-doped counterparts,Adsorption

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Adsorption of organic solvent vapours on carbon nanotubes, few-layer graphene nanoflakes and their nitrogen-doped counterparts
Adsorption ( IF 3.0 ) Pub Date : 2021-12-02 , DOI: 10.1007/s10450-021-00349-1
Stepan Yu. Kupreenko ₁ , Natalia E. Strokova ₁ , Ekaterina A. Il’gova ₁ , Anton S. Ivanov ₁ , Ekaterina A. Arkhipova ₁ , Serguei V. Savilov ₁

Affiliation

Abstract

This work studies the influence of nitrogen doping of carbon nanotubes (CNTs) and few-layer graphene nanoflakes (GNFs) on the adsorption of organic solvent vapours. The synthesized materials (CNTs, GNFs and N-doped counterparts) were thoroughly characterized by simultaneous thermal analysis, low temperature nitrogen physisorption and X-Ray photoelectron spectroscopy. The basic regularities of the adsorption of organic solvent vapours were studied using acetone, ethyl acetate, acetic acid and toluene. The dependence of the maximum adsorption capacity of CNTs, GNFs and N-doped counterparts on the dipole moment of adsorbate was investigated. The dependencies of the isosteric heat of adsorption on the degree of surface coverage for various pairs of adsorbate-adsorbent were obtained and the average values of the heat of adsorption were calculated. It was found that introduction of nitrogen into the structure of CNTs and GNFs significantly increases the heat of acetic acid vapour adsorption.

中文翻译：

有机溶剂蒸气在碳纳米管、少层石墨烯纳米薄片及其掺氮对应物上的吸附

摘要

这项工作研究了碳纳米管 (CNT) 和少层石墨烯纳米薄片 (GNF) 的氮掺杂对有机溶剂蒸气吸附的影响。通过同步热分析、低温氮物理吸附和 X 射线光电子能谱对合成材料（CNT、GNF 和 N 掺杂对应物）进行了彻底表征。用丙酮、乙酸乙酯、乙酸和甲苯研究了有机溶剂蒸气吸附的基本规律。研究了 CNT、GNF 和 N 掺杂对应物的最大吸附容量对吸附质偶极矩的依赖性。获得了等量吸附热对不同对吸附质-吸附剂的表面覆盖程度的依赖性，并计算了吸附热的平均值。

更新日期：2021-12-02

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