scholarly journals Fabrication of Novel CeO2/GO/CNTs Ternary Nanocomposites with Enhanced Tribological Performance

2019 ◽  
Vol 9 (1) ◽  
pp. 170 ◽  
Author(s):  
Chunying Min ◽  
Zengbao He ◽  
Haojie Song ◽  
Dengdeng Liu ◽  
Wei Jia ◽  
...  
Keyword(s):  
Tribological Performance ◽  
Ceo2 Nanoparticles ◽  
Hybrid Nanocomposite ◽  
Facile Hydrothermal Method ◽  
One Dimensional ◽  
Paraffin Oil ◽  
Multi Walled Carbon Nanotubes ◽  
Walled Carbon Nanotubes ◽  
Lubrication Properties ◽  
Lubricating Properties

Increasing demands of multi-functional lubricant materials with well distributed nanoparticles has been generated in the field of oil lubrication. In this study, one-dimensional (1-D) acidified multi-walled carbon nanotubes (CNTs) and two-dimensional (2-D) graphene oxide (GO) sheets were dispersed together under an ultra-sonication condition to form CNTs/GO hybrids and the corresponding CNTs/GO hybrids decorated with uniform zero-dimensional (0-D) cerium oxide (CeO2) nanoparticles were prepared via a facile hydrothermal method. The tribological performance of CeO2/CNTs/GO ternary nanocomposite was systematically investigated using a MS-T3000 ball-on-disk tester. The results demonstrated that CeO2/GO/CNTs nanocomposites can effectively reduce the friction of sliding pairs in paraffin oil. Moreover, the oil with 1 wt% of CeO2/GO/CNTs exhibited the best lubrication properties with the lowest friction coefficient and wear scar diameters (WSD) compared with adding only GO nanosheet, CeO2, and CeO2/CNTs hybrid nanocomposite as lubricant additives. It is concluded that due to the synergistic effect of 0D CeO2, 1D CNTs, and 2D GO during sliding process, a dimensionally mixed CeO2/GO/CNTs nanocomposite exhibits excellent lubricating properties, providing innovative and effective additives for application in the field of lubrication.

SOME NOTES ON LOW-DIMENSIONAL ELASTIC THEORIES OF BIO- AND NANO-STRUCTURES

2010 ◽  
Vol 24 (23) ◽  
pp. 2403-2412 ◽  
Author(s):  
XIAO-HUA ZHOU
Keyword(s):  
Carbon Nanotubes ◽  
Carbon Nanotube ◽  
Energy Density ◽  
Helix Angle ◽  
Dimensional Structure ◽  
One Dimensional ◽  
Nano Structures ◽  
Multi Walled Carbon Nanotubes ◽  
Low Dimensional ◽  
Walled Carbon Nanotubes

The shapes of DNA, carbon nanotube (CNT) and vesicle are determined by the minimum of their elastic energy. Two central results about the low-dimensional elastic structure are reported here. Firstly, if the energy density of a one-dimensional structure is only related to its curvature, we generally find that a helix solution with the helix angle θ = ±π/4 will have zero total energy. Secondly, with the fixed length and radii, the helical multi-walled carbon nanotubes (MWNTs) and DNA will have the lowest energy when the helix angle θ = ±π/3.

A highly sensitive persulfate sensor based on a hybrid nanocomposite with silicomolybdate doping poly(3,4-ethylenedioxythiophene) on multi-walled carbon nanotubes

RSC Advances ◽  
2015 ◽  
Vol 5 (74) ◽  
pp. 59946-59952 ◽  
Author(s):  
Kuo Chiang Lin ◽  
Tsung Han Wu ◽  
Shen Ming Chen
Keyword(s):  
Carbon Nanotubes ◽  
Hybrid Composite ◽  
Hybrid Nanocomposite ◽  
Highly Sensitive ◽  
Multi Walled Carbon Nanotubes ◽  
Walled Carbon Nanotubes ◽  
Positively Charged

Negatively charged silicomolybdate doped positively charged PEDOT through electropolymerization of EDOT monomers to form a MWCNT-hybrid composite.

A biodegradable, biocompatible transdermal device derived from carboxymethyl cellulose and multi-walled carbon nanotubes for sustained release of diclofenac sodium

RSC Advances ◽  
2016 ◽  
Vol 6 (23) ◽  
pp. 19605-19611 ◽  
Author(s):  
Barun Mandal ◽  
Dipankar Das ◽  
Arun Prabhu Rameshbabu ◽  
Santanu Dhara ◽  
Sagar Pal
Keyword(s):  
Carbon Nanotubes ◽  
Sustained Release ◽  
Transdermal Delivery ◽  
Carboxymethyl Cellulose ◽  
Room Temperature ◽  
Diclofenac Sodium ◽  
Nanocomposite Hydrogel ◽  
Hybrid Nanocomposite ◽  
Multi Walled Carbon Nanotubes ◽  
Walled Carbon Nanotubes

A hybrid nanocomposite hydrogel (CMC–MWCNT) has been fabricated using carboxymethyl cellulose (CMC) and acid-functionalized multi-walled carbon nanotubes (MWCNTs) at room temperature for transdermal delivery of diclofenac sodium.

Polypyrrole with a functionalized multi-walled carbon nanotube hybrid nanocomposite: a new and efficient nitrite sensor

2018 ◽  
Vol 42 (5) ◽  
pp. 3748-3757 ◽  
Author(s):  
Abraham Daniel Arulraj ◽  
Ellairaja Sundaram ◽  
Vairathevar Sivasamy Vasantha ◽  
Bernaurdshaw Neppolian
Keyword(s):  
Carbon Nanotubes ◽  
Carbon Nanotube ◽  
Sodium Dodecyl Sulfate ◽  
Conducting Polymers ◽  
Sodium Dodecyl ◽  
Hybrid Nanocomposite ◽  
Multi Walled Carbon Nanotube ◽  
Dodecyl Sulfate ◽  
Multi Walled Carbon Nanotubes ◽  
Walled Carbon Nanotubes

This study mainly focuses on the electrochemical-assisted synthesis of conducting polymers such as polypyrrole (PPy) with sodium dodecyl sulfate (SDS) as a surfactant and supported with functionalized multi-walled carbon nanotubes (f-MWCNTs).

The Effect of the Contact Angle on a Flow With Condensation and Evaporation Through a Microchannel

2008 ◽  
Author(s):  
Thomas Loimer
Keyword(s):  
Contact Angle ◽  
Mass Flux ◽  
Saturated Vapor ◽  
Contact Angles ◽  
One Dimensional ◽  
Fluid Properties ◽  
Multi Walled Carbon Nanotubes ◽  
Liquid Flows ◽  
Walled Carbon Nanotubes ◽  
Good Heat

The flow of a fluid that is in a state of saturated vapor at the upstream side of a channel is considered. The flow is described by applying the balances of mass, momentum and energy. One-dimensional flow and heat conduction is assumed. Account is taken of the Joule-Thomson effect and, for contact angles smaller than 90°, of the capillary pressure given by the Young-Laplace equation and of the vapor pressure reduction at a curved meniscus due to Kelvin’s equation. For a diameter of the channel below a certain threshold the vapor condenses fully, liquid flows through a part of the channel, the fluid evaporates at a location within the channel and vapor flows through the remaining part of the channel. The threshold diameter below of which the fluid condenses fully is a function of the fluid properties and of the effective thermal conductivity of the fluid-filled channel. The threshold diameter lies in the range from a few tens of nanometers for bad heat conductors to a few hundreds of nanometers for very good heat conductors such as multi-walled carbon nanotubes. Solutions are given for the flow problem with a contact angle of 90° and with contact angles smaller than 90°. The mass flux is considerably larger for contact angles smaller than 90°. However, as long as the contact angle is smaller than approx. 70°, the mass flux is nearly independent of the contact angle.

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