scholarly journals Effects of confinement on the vibrational spectra of liquid water adsorbed in carbon nanotubes

2001 ◽  
Vol 63 (16) ◽  
Author(s):  
J. Martí ◽  
M. C. Gordillo
Keyword(s):  
Carbon Nanotubes ◽  
Vibrational Spectra ◽  
Liquid Water

scholarly journals Synthesizing carbon nanotubes in space

2019 ◽  
Vol 631 ◽  
pp. A54 ◽  
Author(s):  
Tao Chen ◽  
Aigen Li
Keyword(s):  
Carbon Nanotubes ◽  
Vibrational Spectra ◽  
Density Functional ◽  
Hydrogen Abstraction ◽  
Infrared Space Observatory ◽  
Functional Theory ◽  
Space Telescope ◽  
Formation Pathway ◽  
Polycyclic Aromatic ◽  
Abundant Element

Context. As the fourth most abundant element in the universe, carbon (C) is widespread in the interstellar medium (ISM) in various allotropic forms (e.g. fullerenes have been identified unambiguously in many astronomical environments, the presence of polycyclic aromatic hydrocarbon molecules in space has been commonly acknowledged, and presolar graphite, as well as nanodiamonds, have been identified in meteorites). As stable allotropes of these species, whether carbon nanotubes (CNTs) and their hydrogenated counterparts are also present in the ISM or not is unknown. Aims. The aim of the present works is to explore the possible routes for the formation of CNTs in the ISM and calculate their fingerprint vibrational spectral features in the infrared (IR). Methods. We studied the hydrogen-abstraction and acetylene-addition (HACA) mechanism and investigated the synthesis of nanotubes using density functional theory (DFT). The IR vibrational spectra of CNTs and hydrogenated nanotubes (HNTs), as well as their cations, were obtained with DFT. Results. We find that CNTs could be synthesized in space through a feasible formation pathway. CNTs and cationic CNTs, as well as their hydrogenated counterparts, exhibit intense vibrational transitions in the IR. Their possible presence in the ISM could be investigated by comparing the calculated vibrational spectra with astronomical observations made by the Infrared Space Observatory, Spitzer Space Telescope, and particularly the upcoming James Webb Space Telescope.

scholarly journals Transport of a liquid water and methanol mixture through carbon nanotubes under a chemical potential gradient

2005 ◽  
Vol 122 (21) ◽  
pp. 214702 ◽  
Author(s):  
Jie Zheng ◽  
Erin M. Lennon ◽  
Heng-Kwong Tsao ◽  
Yu-Jane Sheng ◽  
Shaoyi Jiang
Keyword(s):  
Carbon Nanotubes ◽  
Liquid Water ◽  
Chemical Potential ◽  
Potential Gradient ◽  
Chemical Potential Gradient ◽  
Methanol Mixture

Vibrational Spectra and Dynamics of Electronically Excited Semiconducting Single-Walled Carbon Nanotubes†

2008 ◽  
Vol 112 (50) ◽  
pp. 16030-16034 ◽  
Author(s):  
Ying-Zhong Ma ◽  
Matthew W. Graham ◽  
Matthew A. Prantil ◽  
Aaron J. Van Tassle ◽  
Graham R. Fleming
Keyword(s):  
Carbon Nanotubes ◽  
Vibrational Spectra ◽  
Single Walled Carbon Nanotubes ◽  
Single Walled Carbon ◽  
Electronically Excited ◽  
Walled Carbon Nanotubes

scholarly journals Cellulose fibres with carbon nanotube networks for water sensing

2014 ◽  
Vol 2 (15) ◽  
pp. 5541-5547 ◽  
Author(s):  
Haisong Qi ◽  
Jianwen Liu ◽  
Yinhu Deng ◽  
Shanglin Gao ◽  
Edith Mäder
Keyword(s):  
Carbon Nanotubes ◽  
Carbon Nanotube ◽  
Liquid Water ◽  
Dip Coating ◽  
Cellulose Fibres ◽  
Multi Walled Carbon Nanotubes ◽  
Walled Carbon Nanotubes ◽  
Water Sensing ◽  
Carbon Nanotube Networks

Cellulose-based fibres with unique and efficient abilities to sense liquid water were realized by depositing multi-walled carbon nanotubes (MWNTs) on the surfaces of the fibres using a simple and scalable dip coating.

Molecular Dynamics Investigation on the Adsorption of Coalbed Methane Utilizing Carbon Nanotubes under the Condition of Liquid Water

2012 ◽  
Vol 616-618 ◽  
pp. 877-880
Author(s):  
Wan Song Zhang ◽  
Chang Jin Shao ◽  
Zhen Qing Yang ◽  
Jing Zhou
Keyword(s):  
Carbon Nanotubes ◽  
Adsorption Capacity ◽  
Liquid Water ◽  
Coalbed Methane ◽  
Molecular Dynamic Method ◽  
Water Film ◽  
Coal Bed ◽  
Order Of Magnitude ◽  
Water Drops ◽  
Molecular Potentials

The carbon nanotubes(CNTs) was described according to condensed-phase optimized molecular potentials and arranged to represent coal structures, while interaction of CNTs with gas components of the system involves the Van der Waals force. Thus, we are able to study the interaction ability between coal and gas in different cases through the binding energy calculated by molecular dynamic method. We find that when there was not liquid water, the adsorption capacity of coal bed methane gases on the surface of CNTs, in the order of magnitude, was CO2>CH4>N2, and when there existed liquid water, the order of the adsorption capacity of gases changed into the order of N2>CH4>CO2>H2O. When there existed liquid water, the surface of CNTs may first absorb a very thin layer of methane molecules, and then a layer of water group, forming a layer of water film or water drops, providing large quantity of adsorption potential for the residual gases.

Vibrational spectra of double-wall carbon nanotubes

2004 ◽  
Vol 69 (23) ◽  
Author(s):  
Minggang Xia ◽  
Shengli Zhang ◽  
Erhu Zhang ◽  
Shumin Zhao ◽  
Xianjun Zuo
Keyword(s):  
Carbon Nanotubes ◽  
Vibrational Spectra ◽  
Double Wall

Electronic and vibrational spectra of a gel of single-wall carbon nanotubes in an ionic liquid

2007 ◽  
Vol 71 (5) ◽  
pp. 660-662 ◽  
Author(s):  
A. V. Bazhenov ◽  
T. N. Fursova ◽  
N. N. Kolesnikov ◽  
D. N. Borisenko ◽  
A. V. Timonina ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Ionic Liquid ◽  
Vibrational Spectra ◽  
Single Wall Carbon Nanotubes ◽  
Single Wall Carbon ◽  
Electronic And Vibrational Spectra
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