Supramolecular assembly of cobaloxime on nanoring-coated carbon nanotubes: addressing the stability of the pyridine–cobalt linkage under hydrogen evolution turnover conditions

2016 ◽  
Vol 52 (79) ◽  
pp. 11783-11786 ◽  
Author(s):  
Simon Donck ◽  
Jennifer Fize ◽  
Edmond Gravel ◽  
Eric Doris ◽  
Vincent Artero
Keyword(s):  
Carbon Nanotubes ◽  
Carbon Nanotube ◽  
Hydrogen Evolution ◽  
Supramolecular Assembly ◽  
The Stability ◽  
Coated Carbon

A carbon nanotube–cobaloxime H2-evolving nanohybrid catalyst was prepared through supramolecular assembly of tailored polymerizable amphiphiles, leading to the coordination of cobalt on pyridine-coated nanotubes.

Enhancing the stability of microplasma device utilizing diamond coated carbon nanotubes as cathode materials

2014 ◽  
Vol 104 (22) ◽  
pp. 223106 ◽  
Author(s):  
Tinghsun Chang ◽  
Srinivasu Kunuku ◽  
Kamatchi Jothiramalingam Sankaran ◽  
Keh-Chyang Leou ◽  
Nyanhwa Tai ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Cathode Materials ◽  
The Stability ◽  
Coated Carbon

Characterization of Mechanical Properties of Carbon Nanotubes in Copper-Matrix Nanocomposites

2006 ◽  
Author(s):  
Seunghyun Baik ◽  
Byeongsoo Lim ◽  
Bumjoon Kim ◽  
Untae Sim ◽  
Seyoung Oh ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Carbon Nanotubes ◽  
Carbon Nanotube ◽  
Pure Copper ◽  
Copper Matrix ◽  
Mixing Process ◽  
Mechanical Mixing ◽  
Matrix Nanocomposites ◽  
Coated Carbon

Carbon nanotubes have received considerable attention because of their excellent mechanical properties. In this study, carbon nanotube - copper composites have been sintered by a mechanical mixing process. The interfacial bonding between nanotubes and the copper matrix was improved by coating nanotubes with nickel. Sintered pure copper samples were used as control materials. The displacement rate of nanotube-copper composites was found to increase at 200°C whereas that of nickel-coated nanotue-copper composites significantly decreased. The incorporation of carbon nanotubes and nickel-coated carbon nanotubes in the copper matrix decreased friction coefficients and increased the time up to the onset of scuffing compared with those of pure copper specimens.

Azopolymer triggered electrophoretic deposition of MnO2-carbon nanotube composites and polypyrrole coated carbon nanotubes for supercapacitors

2015 ◽  
Vol 3 (32) ◽  
pp. 16486-16494 ◽  
Author(s):  
Yangshuai Liu ◽  
Kaiyuan Shi ◽  
Igor Zhitomirsky
Keyword(s):  
Carbon Nanotubes ◽  
Carbon Nanotube ◽  
Electrophoretic Deposition ◽  
Electrochemical Methods ◽  
Multiwalled Carbon Nanotube ◽  
Multiwalled Carbon ◽  
Nanotube Composites ◽  
Carbon Nanotube Composites ◽  
Coated Carbon

MnO2 nanofibers-multiwalled carbon nanotube composites and polypyrrole coated carbon nanotubes for supercapacitors were prepared by new chemical and electrochemical methods.

Chemical bonding in amorphous Si-coated carbon nanotubes as anodes for Li ion batteries: a XANES study

RSC Advances ◽  
2014 ◽  
Vol 4 (39) ◽  
pp. 20226-20229 ◽  
Author(s):  
Jigang Zhou ◽  
Yongfeng Hu ◽  
Xiaolin Li ◽  
Chongmin Wang ◽  
Lucia Zuin
Keyword(s):  
Carbon Nanotubes ◽  
Carbon Nanotube ◽  
Li Ion Batteries ◽  
X Ray ◽  
Electrochemical Cycling ◽  
Li Ion ◽  
Amorphous Si ◽  
Spectroscopy Studies ◽  
X Ray Absorption ◽  
Coated Carbon

The Si–O–C bonding and its evolution upon electrochemical cycling in a Si-coated carbon nanotube anode are unveiled by X-ray absorption spectroscopy studies.

Phytic acid-guided ultra-thin N,P co-doped carbon coated carbon nanotubes for efficient all-pH electrocatalytic hydrogen evolution

Nanoscale ◽  
2019 ◽  
Vol 11 (47) ◽  
pp. 23027-23034 ◽  
Author(s):  
Fei Xiao ◽  
Zhimin Chen ◽  
Hao Wu ◽  
Ying Wang ◽  
Erping Cao ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Hydrogen Evolution ◽  
Phytic Acid ◽  
Hydrogen Evolution Reaction ◽  
Metal Free ◽  
Carbon Coated ◽  
Coated Carbon ◽  
Co Doped

An ultra-thin N, P co-doped carbon (NPC) was constructed on CNT by selecting phytic acid as a “guide”. The obtained CNT@NPC performs as an efficient and robust metal-free electrocatalyst for pH-universal hydrogen evolution reaction.

Fabrication of aluminum-carbon nanotube nano-composite using aluminum-coated carbon nanotube precursor

2019 ◽  
Vol 53 (28-30) ◽  
pp. 4055-4064
Author(s):  
Muhammad Mansoor ◽  
Shaheed Khan ◽  
Amjad Ali ◽  
Khalid Mahmood Ghauri
Keyword(s):  
Mechanical Properties ◽  
Carbon Nanotubes ◽  
Carbon Nanotube ◽  
Metal Matrix ◽  
Physical And Mechanical Properties ◽  
Induction Melting ◽  
Matrix Composites ◽  
Nano Composite ◽  
The Matrix ◽  
Coated Carbon

Demand of special combination of different properties of the materials instigated the development of metal matrix composite. The carbon nanotubes being renowned for their excellent physical and mechanical properties are one of the major choices as strengthen material for metal matrix composites. To benefit their properties, the carbon nanotubes should be thoroughly dispersed and have wetting with the matrix. In the present study, a precursor of aluminum-carbon nanotubes was prepared by coating the nanotubes with titanium and used to fabricate the composite by induction melting. The precursor provided easy wetting, while induction melting facilitated dispersion of the nanotubes readily. Consequently, the composite exhibited noticeable augmentations in yield and tensile strength from 64 to 193 MPa and 81 to 227 MPa, respectively.

scholarly journals Thermal Conductivity of CNT - Wated Nanofluids: a Review

2020 ◽  
Vol 22 (1) ◽  
pp. 207-220 ◽  
Author(s):  
M. Akhilesh ◽  
K. Santarao ◽  
M. V. S. Babu
Keyword(s):  
Thermal Conductivity ◽  
Carbon Nanotubes ◽  
Carbon Nanotube ◽  
Experimental Studies ◽  
Thermal Characteristics ◽  
Thermal Conducting ◽  
The Stability ◽  
Proper Group ◽  
Physical Stabilization ◽  
Transportation Applications

AbstractIn heat transportation applications, water is most commonly used fluid. The efficiency of equipment used in these applications depends on thermal characteristics of water used. The thermal characteristics of water could be upgraded by suspending high thermal conducting solid nanoparticles. In this paper an attempt has been made to know how the use of surfactants and functionalization of carbon nanotube walls can affect the thermal characteristics and stability of nanofluid. A thorough analysis of collected literature revealed that carbon nanotubes have much higher thermal conductivity than any other nanoparticles and hence improve the thermal properties of water when suspended in them. Further it is concluded that suspension of carbon nanotubes in water requires use of surfactant or functionalization of carbon nanotube walls with proper group. By setting optimum pH and better dispersion, better thermal conductivity is possible. Experimental studies in the literature survey reveal that chemical stabilization techniques and physical stabilization techniques together decide the stability of the nanofluid.

Fabrication of Carbon Nanotube Triode Using Helicon Plasma Cvd with Electroplated Nico Catalyst

2003 ◽  
Vol 772 ◽  
Author(s):  
Masakazu Muroyama ◽  
Kazuto Kimura ◽  
Takao Yagi ◽  
Ichiro Saito
Keyword(s):  
Carbon Nanotubes ◽  
Carbon Nanotube ◽  
Metal Catalyst ◽  
Ni Catalyst ◽  
Plasma Cvd ◽  
Helicon Plasma ◽  
Plasma Enhanced Cvd ◽  
Turn On ◽  
Aligned Carbon Nanotubes ◽  
Vertically Aligned

AbstractA carbon nanotube triode using Helicon Plasma-enhanced CVD with electroplated NiCo catalyst has been successfully fabricated. Isolated NiCo based metal catalyst was deposited at the bottom of the cathode wells by electroplating methods to control the density of carbon nanotubes and also reduce the activation energy of its growth. Helicon Plasma-enhanced CVD (HPECVD) has been used to deposit nanotubes at 400°C. Vertically aligned carbon nanotubes were then grown selectively on the electroplated Ni catalyst. Field emission measurements were performed with a triode structure. At a cathode to anode gap of 1.1mm, the turn on voltage for the gate was 170V.

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