We report the preparation of stable dispersion of multiwalled carbon nanotubes (MWCNTs) using carminic acid (CA) as a dispersing agent. The transmission electron microscopy (TEM), scanning electron microscopy (SEM), and atomic force microscopy (AFM) results confirmed that MWCNT is well dispersed in CA aqueous solution and CA has been well adsorbed at MWCNT walls. Fourier transform infrared (FTI...

Electric-current-induced structural changes in a suspended multiwall carbon nanotube (MWCNT) were observed through situ transmission electron microscopy. The bias voltage and electric current measured simultaneously as the MWCNT was imaged. passage of excessive led to breakdown surface subsequent layer-by-layer removal broken outermost shell via sublimation atoms. accompanied by discrete decrea...

Palladium nanoparticles supported on multi-walled carbon nanotubes (Pd/MWCNTs) have been synthesized using a modified polyol reduction method and its performance in methanol oxidation reactions has evaluated. The morphology of palladium on MWCNTs was characterized by scanning electron microscopy (SEM) and transmission electron microscopy (TEM). The catalytic performance of synthesized catalyst ...

Abstract The microstructure, mechanical properties, and phase stability of TiN+MWCNTs ceramic-based composite were studied. Ball milling spark plasma sintering (SPS) techniques adopted for synthesizing titanium nitride (TiN) composites containing 1, 3, 5 wt. percent (wt. %) multiwalled carbon nanotubes (MWCNT). At a temperature 1000 °C where the was investigated, effects MWCNT addition on therm...

Abstract The emissions of volatile organic compounds (VOCs) have hazardous effects on humans and the environment, hence they should be detected reduced. In this study, polybenzoxazine (PBZ) amine-functionalized multiwall carbon nanotube (MWCNT) composites were synthesized as a sensor for VOCs. MWCNT functionalized with two types diamines, namely, 1,6-hexanediamine (HDA) phenylenediamine (PDA). ...

Understanding atomic interactions between constituents is critical to the design of high-performance nanocomposites. Here, we report an experimental-computational approach to investigate the adhesion energy between as-produced arc discharge multiwalled carbon nanotubes (MWCNTs) and graphene. An in situ scanning electron microscope (SEM) experiment is used to peel MWCNTs from graphene grown on c...

BACKGROUND As the application of carbon nanotubes (CNT) in consumer products continues to rise, studies have expanded to determine the associated risks of exposure on human and environmental health. In particular, several lines of evidence indicate that exposure to multi-walled carbon nanotubes (MWCNT) could pose a carcinogenic risk similar to asbestos fibers. However, to date the potential mar...

Pool boiling experiments were conducted with three horizontal, flat, silicon surfaces, two of which were coated with vertically aligned multiwalled carbon nanotubes (MWCNTs). The two wafers were coated with MWCNT of two different thicknesses: 9 m (Type-A) and 25 m (Type-B). Experiments were conducted for the nucleate boiling and film boiling regimes for saturated and subcooled conditions with l...

The presented work is devoted to the preparation of nanocomposites based on multiwall carbon nanotubes (MWCNTs) and copper (Cu) nanoparticles by a simple chemical method, study their sensing properties hydrogen sulfide (H2S) gas. Cu decorated (MWCNTs/Cu) were prepared deposition very thin layers pristine functionalized (f-MWCNTs) using both physical (electron beam evaporation (EBE)) (electroche...

The use of reduced graphene oxide (rGO) and multi-walled carbon nanotubes (MWCNTs) has attracted considerable interest for fabrication chemical sensors biosensors in recent years. In this study, we report on two ultrasensitive DNA based a sensing mechanism driven by the electrostatic attraction [Ru(NH3)6]3+ cations electrode surfaces modified with Au-MWCNTs Au-rGO. A one-step pot synthesis was ...