Synthesis of titanium oxide and titanium nitride nano-particles with narrow size distribution by supersonic thermal plasma expansion

Plasma-assisted synthesis of carbon encapsulated magnetic nanoparticles with controlled sizes correlated to smooth variation of magnetic properties

“…Encapsulation had effectively arrested the further growth of the particles after nucleation, which otherwise could have grown in size by coalescence if still in liquid phase. It may be noted that the average size of the CEMN synthesized at 20 mbar in this experiment is smaller than all other high temperature materials synthesized by the same reactor configuration so far [25][26][27][28][29]. Several hundreds of mbar pressure had produced sub-10 nm magnetic nanoparticles, which in all previous experiments were bigger than that.…”

“…The sample collection chamber pressure was pumped down with a roots vacuum pump (500 m 3 /h) and rotary vacuum pump (10 3 lpm) combination. Schematic drawings and photographs of the complete system may be found elsewhere [25].…”

“…We have developed a thermal plasma assisted experimental nanoparticle reactor configuration for synthesis of different high temperature nanomaterials, where precursors embedded in the jet undergo uniform, rapid cooling while expanding into a low pressure sample collection chamber, which ensures narrow size distribution of the product particles [25][26][27][28][29]. A unique feature of this experimental reactor is that the plasma production zone remains isolated from the particle nucleation/growth zone through a supersonic nozzle, allowing variation of pressure in the sample collection chamber over a wide range down to the few mbar level, which may be used as an efficient control knob for tuning the average particle size and size distribution [27][28][29].…”

Nano-cubic structured titanium nitride particle films as cathodes for the effective electrocatalytic debromination of BDE-47

“…870633). Compared with the polycrystalline TiN nanparticles reported in the literatures [33][34][35], which usually show a spherical morphology, the cubic structure suggests an attractive monocrystalline nature and good crystallinity, which can result in excellent electrical conductivity [36]. This is beneficial for the electrocatalytic debromination of BDE-47 in our experiments.…”

Thermal Plasma Synthesis of Nano-Sized Powders

“…'s have used a supersonic DC plasma torch for achieving specialty Al2O3 nano-powders with amorphous crystalline structures [53]. In their experiment, a supersonic Laval nozzle was attached to a non-transferred DC plasma torch in order to obtain high quenching rate requested for amorphization of the in-flight treated Al2O3 precursors [53][54][55].…”