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In this paper, the use of carbon nanostructures as GPa high-pressure deformation and reaction cells on the nanoscale is presented. Controlled irradiation of multiwalled carbon nanotubes can cause large pressure (up to 40GPa) buildup within the nanotube cores that can plastically deform, extrude, and break solid materials that are encapsulated inside the core. Compressive forces from graphitic shells...
This paper presents synthesis and characterization of conducting polypyrrole-multi-walled carbon nanotube films co-depositing onto nickel electrode substrate. The electrochemical polymerization of pyrrole is performed in 100ml aqueous solution containing 0.2M pyrrole, 0.05M AOT and 0.01g multiwalled carbon nanotubes using three-electrode system. The SEM and cyclic voltammetry analysis show that the...
The nanofluid does not simply refer to a liquid-solid mixture. In general, these are effective methods used for preparation of suspensions: (1) to change the pH value of suspensions; (2) to use surface activators and/or dispersants; (3) to use ultrasonic vibration. In this work, Distilled water and Multi-walled carbon nanotubes were used to produce nanofluids. The carbon nanotubes were provided by...
In this study, nanofluid heat transfer research has been divided by fluid conditions of laminar flow and turbulent flow. All parameter are compared to measure convective heat transfer coefficients altogether in entrance region. The effect of some factors such as mass fraction, temperature, and various velocity were selected and the effects of these parameters on the convective heat transfer coefficients...
In this paper, polymaleic anhydride are grafted on the carbon nanotube (CNT) surfaces. This process provided a good method in amination and enhances the solubility of CNTs. The reaction products have high solubility in organic solvents. X-ray diffraction (XRD), Raman, Fourier transform infrared (FTIR), scanning electron microscopy (SEM) and transmission electron microscopy (TEM) are used to characterize...
In this paper multiwalled carbon nanotubes decorated with self-assembled nanosilver particles are prepared using AgNO3 and benzyl mercaptan. We further demonstrated the improvement in electrical conductivity of conductive pastes and transparent conductive films.
This paper presents a novel approach to maximize the current density of electrodes modified by carbon nanotubes for high efficiency hydrogen production. Multiwalled carbon nanotubes (MWNTs), due to their unique electrical conductivity and mechanical properties, have led to our interest in their application of MWNTs for water splitting purposes. The motivation for this work is to provide a platform...
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