Ionic adsorption and desorption of CNT nanoropes

Jun-Jun Shang; Qing-Sheng Yang; Xiao-Hui Yan; Xiao-Qiao He; Kim-Meow Liew

doi:10.3390/nano6100177

Ionic adsorption and desorption of CNT nanoropes

Jun-Jun Shang, Qing-Sheng Yang^*, Xiao-Hui Yan, Xiao-Qiao He^*, Kim-Meow Liew

^*Corresponding author for this work

Research output: Journal Publications and Reviews › RGC 21 - Publication in refereed journal › peer-review

9 Citations (Scopus)

54 Downloads (CityUHK Scholars)

Abstract

A nanorope is comprised of several carbon nanotubes (CNTs) with different chiralities. A molecular dynamic model is built to investigate the ionic adsorption and desorption of the CNT nanoropes. The charge distribution on the nanorope is obtained by using a modified gradient method based on classical electrostatic theory. The electrostatic interactions among charged carbon atoms are calculated by using the Coulomb law. It was found here that the charged nanorope can adsorb heavy metal ions,and the adsorption and desorption can be realized by controlling the strength of applied electric field. The distance between the ions and the nanorope as well as the amount of ions have an effect on the adsorption capacity of the nanorope. The desorption process takes less time than that of adsorption. The study indicates that the CNT nanorope can be used as a core element of devices for sewage treatment.

Original language	English
Article number	177
Journal	Nanomaterials
Volume	6
Issue number	10
DOIs	https://doi.org/10.3390/nano6100177
Publication status	Published - 1 Oct 2016

Research Keywords

Adsorption and desorption of ions
Carbon nanotubes
Nanorope

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This full text is made available under CC-BY 4.0. https://creativecommons.org/licenses/by/4.0/

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This output contributes to the following UN Sustainable Development Goals (SDGs)

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title = "Ionic adsorption and desorption of CNT nanoropes",

abstract = "A nanorope is comprised of several carbon nanotubes (CNTs) with different chiralities. A molecular dynamic model is built to investigate the ionic adsorption and desorption of the CNT nanoropes. The charge distribution on the nanorope is obtained by using a modified gradient method based on classical electrostatic theory. The electrostatic interactions among charged carbon atoms are calculated by using the Coulomb law. It was found here that the charged nanorope can adsorb heavy metal ions,and the adsorption and desorption can be realized by controlling the strength of applied electric field. The distance between the ions and the nanorope as well as the amount of ions have an effect on the adsorption capacity of the nanorope. The desorption process takes less time than that of adsorption. The study indicates that the CNT nanorope can be used as a core element of devices for sewage treatment.",

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T1 - Ionic adsorption and desorption of CNT nanoropes

AU - Shang, Jun-Jun

AU - Yang, Qing-Sheng

AU - Yan, Xiao-Hui

AU - He, Xiao-Qiao

AU - Liew, Kim-Meow

PY - 2016/10/1

Y1 - 2016/10/1

N2 - A nanorope is comprised of several carbon nanotubes (CNTs) with different chiralities. A molecular dynamic model is built to investigate the ionic adsorption and desorption of the CNT nanoropes. The charge distribution on the nanorope is obtained by using a modified gradient method based on classical electrostatic theory. The electrostatic interactions among charged carbon atoms are calculated by using the Coulomb law. It was found here that the charged nanorope can adsorb heavy metal ions,and the adsorption and desorption can be realized by controlling the strength of applied electric field. The distance between the ions and the nanorope as well as the amount of ions have an effect on the adsorption capacity of the nanorope. The desorption process takes less time than that of adsorption. The study indicates that the CNT nanorope can be used as a core element of devices for sewage treatment.

AB - A nanorope is comprised of several carbon nanotubes (CNTs) with different chiralities. A molecular dynamic model is built to investigate the ionic adsorption and desorption of the CNT nanoropes. The charge distribution on the nanorope is obtained by using a modified gradient method based on classical electrostatic theory. The electrostatic interactions among charged carbon atoms are calculated by using the Coulomb law. It was found here that the charged nanorope can adsorb heavy metal ions,and the adsorption and desorption can be realized by controlling the strength of applied electric field. The distance between the ions and the nanorope as well as the amount of ions have an effect on the adsorption capacity of the nanorope. The desorption process takes less time than that of adsorption. The study indicates that the CNT nanorope can be used as a core element of devices for sewage treatment.

KW - Adsorption and desorption of ions

KW - Carbon nanotubes

KW - Nanorope

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U2 - 10.3390/nano6100177

DO - 10.3390/nano6100177

M3 - RGC 21 - Publication in refereed journal

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SN - 2079-4991

VL - 6

JO - Nanomaterials

JF - Nanomaterials

IS - 10

M1 - 177

ER -

Ionic adsorption and desorption of CNT nanoropes

Abstract

Research Keywords

Publisher's Copyright Statement

UN SDGs

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