Simulation of Hydrogen Diffusion and Adsorption on Single-Walled Carbon Nanotube

2012 ◽  
Author(s):  
Y. H. Liu ◽  
B. Tian ◽  
F. Wang ◽  
J. Wei ◽  
K. L. Zhang
Keyword(s):  
Carbon Nanotubes ◽  
Carbon Nanotube ◽  
Hydrogen Storage ◽  
Fossil Fuels ◽  
Hydrogen Diffusion ◽  
Hydrogen Adsorption ◽  
High Surface ◽  
Volume Ratio ◽  
Single Walled Carbon Nanotube ◽  
Single Walled Carbon

With clean fuels increasingly used for transportation due to environmental concerns and limited supply of fossil fuels, hydrogen is attracting more attention as a clean fuel free from carbon dioxide and other greenhouse gas emissions. Analysis of hydrogen diffusion in single-walled carbon nanotube was performed with molecular dynamic simulation. The carbon nanotube is chosen because of a well-known fact that it is an excellent adsorption material with high surface volume ratio. In this paper, diffusivity rate are simulated to study the interaction of molecular and atomic hydrogen with single-walled carbon nanotubes. The adsorption energy and repulsive energy are analyzed to explore the nanotube structure after desorption and the mechanism of desorption. Electric charge density is also studied in order to understand better the process of hydrogen adsorption in CNT. A background of the hydrogen storage problem with carbon nanotubes is provided and the issues to be resolved have been highlighted. Future directions to address these challenges have also been suggested. We make a case that molecular simulation studies can identify the most promising structures and compositions to maximize hydrogen storage.

Electrochemical Hydrogen Storage in Single-Walled Carbon Nanotube Paper

2006 ◽  
Vol 6 (3) ◽  
pp. 713-718 ◽  
Author(s):  
Z. P. Guo ◽  
S. H. Ng ◽  
J. Z. Wang ◽  
Z. G. Huang ◽  
H. K. Liu ◽  
...  
Keyword(s):  
Carbon Nanotube ◽  
Hydrogen Storage ◽  
Hydrogen Adsorption ◽  
Constant Current ◽  
Charge Transfer Reaction ◽  
Single Walled Carbon Nanotube ◽  
Single Walled Carbon ◽  
Electrochemical Hydrogen Storage ◽  
A Charge ◽  
Charge Discharge

Single-walled carbon nanotube (SWNT) papers were successfully prepared by dispersing SWNTs in Triton X-100 solution, then filtered by PVDF membrane (0.22 μm pore size). The electrochemical behavior and the reversible hydrogen storage capacity of single-walled carbon nanotube (SWNT) papers have been investigated in alkaline electrolytic solutions (6 N KOH) by cyclic voltammetry, linear micropolarization, and constant current charge/discharge measurements. The effect of thickness and the addition of carbon black on hydrogen adsorption/desorption were also investigated. It was found that the electrochemical charge–discharge mechanism occurring in SWNT paper electrodes is somewhere between that of carbon nanotubes (physical process) and that of metal hydride electrodes (chemical process), and consists of a charge-transfer reaction (Reduction/Oxidation) and a diffusion step (Diffusion).

The impact of the Marangoni convection and magnetic field versus blood-based carbon nanotube nanofluids

2019 ◽  
Vol 234 (1-2) ◽  
pp. 37-46
Author(s):  
Taza Gul ◽  
Ramla Akbar ◽  
Zafar Zaheer ◽  
Iraj S Amiri
Keyword(s):  
Magnetic Field ◽  
Carbon Nanotubes ◽  
Carbon Nanotube ◽  
Marangoni Convection ◽  
Thin Liquid Film ◽  
Casson Fluid ◽  
Single Walled Carbon Nanotube ◽  
Single Walled Carbon ◽  
Walled Carbon Nanotubes ◽  
The Impact

The mutual result of the magnetic field and Marangoni convection against the thin liquid film of Casson fluid, blood-based carbon nanotube nanofluid has been fruitfully discussed in this article. The influence of various model constraints is focused on velocity, heat transfer, pressure distribution, skin friction and Nusselt number through graphical illustration. In addition, we witness that the thermal field of liquid raises with the growing value of [Formula: see text] and this upsurge is more in single-walled carbon nanotubes and is more dominant than multi-walled carbon nanotubes. The controlling approach of the homotopy analysis method has been used for velocity and temperature distribution. For authentication, the achieved results have been associated with the numerical (ND-Solve) method and displayed. This investigation shows that the velocity profile in the case of Casson fluid single-walled carbon nanotube–blood nanofluid is comparatively less affected and the temperature field of single-walled carbon nanotube–blood nanofluid dominates multi-walled carbon nanotube–blood nanofluid.

Probing molecular basis of single-walled carbon nanotube degradation and nondegradation by enzymes based on manganese peroxidase and lignin peroxidase

RSC Advances ◽  
2016 ◽  
Vol 6 (5) ◽  
pp. 3592-3599 ◽  
Author(s):  
Ming Chen ◽  
Xiaosheng Qin ◽  
Jian Li ◽  
Guangming Zeng
Keyword(s):  
Carbon Nanotubes ◽  
Carbon Nanotube ◽  
Adverse Effects ◽  
Human Health ◽  
Lignin Peroxidase ◽  
Manganese Peroxidase ◽  
Molecular Basis ◽  
Single Walled Carbon Nanotube ◽  
Single Walled Carbon

Increasing evidence has shown that carbon nanotubes (CNTs) present adverse effects on the environment and human health, which stresses the importance of exploring CNT biodegradation.

Highly efficient thermophones based on freestanding single-walled carbon nanotube films

2019 ◽  
Vol 4 (5) ◽  
pp. 1158-1163 ◽  
Author(s):  
Stepan A. Romanov ◽  
Ali E. Aliev ◽  
Boris V. Fine ◽  
Anton S. Anisimov ◽  
Albert G. Nasibulin
Keyword(s):  
Carbon Nanotubes ◽  
Carbon Nanotube ◽  
State Of The Art ◽  
Single Walled Carbon Nanotubes ◽  
The State ◽  
Single Walled Carbon Nanotube ◽  
Single Walled Carbon ◽  
Highly Efficient ◽  
Art Performance ◽  
Walled Carbon Nanotubes

We present the state-of-the-art performance of air-coupled thermophones made of thin, freestanding films of randomly oriented single-walled carbon nanotubes (SWCNTs).

Poly(3-aminophenylboronic acid)-functionalized carbon nanotubes-based chemiresistive sensors for detection of sugars

The Analyst ◽  
2014 ◽  
Vol 139 (12) ◽  
pp. 3077-3082 ◽  
Author(s):  
Sushmee Badhulika ◽  
Chaker Tlili ◽  
Ashok Mulchandani
Keyword(s):  
Carbon Nanotubes ◽  
Carbon Nanotube ◽  
Boronic Acid ◽  
Functionalized Carbon Nanotubes ◽  
Single Walled Carbon Nanotube ◽  
Single Walled Carbon ◽  
Enzymatic Sensor ◽  
Aminophenylboronic Acid ◽  
Poly Aniline

A poly(aniline boronic acid) (PABA)-functionalized single-walled carbon nanotube (SWNT) non-enzymatic sensor was developed for the detection of saccharides.

STUDY OF HYDROGEN STORAGE IN ALUMINUM HYDRIDE COATED SINGLE-WALLED CARBON NANOTUBE

2009 ◽  
Vol 08 (01n02) ◽  
pp. 43-47
Author(s):  
K. IYAKUTTI ◽  
Y. KAWAZOE ◽  
M. RAJARAJESWARI ◽  
V. J. SURYA
Keyword(s):  
Carbon Nanotube ◽  
Hydrogen Storage ◽  
Bond Length ◽  
Metal Hydride ◽  
Aluminum Hydride ◽  
Light Metal ◽  
Storage Process ◽  
High Coverage ◽  
Single Walled Carbon Nanotube ◽  
Single Walled Carbon

In this study, we report the hydrogen storage in aluminum hydride coated single-walled carbon nanotube. All the H 2 adsorption is molecular with H – H bond length of 0.756 Å. The hydrogen storage capacities with half and full coverages are 6.01 (8.3) wt% and 7.2 (10.3) wt%, respectively, without (with) H 3 of AlH 3. At high coverage of AlH 3 ( C 10 AlH 3) interesting clustering/ dimerization of AlH 3 is observed. These systems are quite stable and the H 2 can be extracted from the system without disturbing the C – Al bonding or detaching the AlH 3 from the carbon nanotube. This present study on a full molecular adsorption of hydrogen via light metal-hydride AlH 3 is new and it leads to a practically viable hydrogen storage process.

Photochemical generation of bis-hexahapto chromium interconnects between the graphene surfaces of single-walled carbon nanotubes

2015 ◽  
Vol 2 (1) ◽  
pp. 81-85 ◽  
Author(s):  
Aron Pekker ◽  
Mingguang Chen ◽  
Elena Bekyarova ◽  
Robert C. Haddon
Keyword(s):  
Carbon Nanotubes ◽  
Carbon Nanotube ◽  
Single Walled Carbon Nanotubes ◽  
Single Walled Carbon Nanotube ◽  
Single Walled Carbon ◽  
Photochemical Generation ◽  
Carbon Nanotube Junctions ◽  
Walled Carbon Nanotubes

The linkage of single-walled carbon nanotube junctions by the photochemistry of organometallic chromium reagents produces dramatic increases in network conductivity.

Sign in / Sign up

Export Citation Format

Share Document