Plasma Treatment of Nanoparticles and Carbon

Plasma Treatment of Nanoparticles and Carbon Nanotubes for Nanofluids Powder Blasting... [Pg.2342]

Plasma Treatment of Nanoparticles and Carbon Nanotubes for Nanofluids, Fig. 7 FTIR spectra of untreated and plasma-treated diamond nanoparticles. Plasma treatment conditions were 60 mTorr pressure, 4 W RF power, and 60 min treatment time... [Pg.2797]

Plasma treatment provides a new approach to functionalize nanoparticle and nanotube surface for heat transfer nanofluid preparation without using stabilizing agents. More experimental investigation is very necessary to optimize the plasma treatment process in terms of plasma chemistry, plasma operating conditions, and proper plasma apparatus design. As pointed out in this entry, besides nanoparticle and nanotube concentration, the enhanced interfacial interactions between nanoparticles and/or carbon nanotubes with base fluids could be another important factor that contributed to the thermal conductivity increase observed in heat transfer nanofluids. A detailed characterization of the nanofluids with the aid of theoretical simulations will help us to understand the fundamental mechanisms for the observed heat transfer enhancement. [Pg.2803]

In the present article, the size and the loading efficiency of metal particles were investigated by changing the preparation method of carbon-supported platinum catalysts. First, the effect of acid/base treatment on carbon blacks supports on the preparation and electroactivity of platinum catalysts. Secondly, binary carbon-supported platinum (Pt) nanoparticles were prepared using two types of carbon materials such as carbon blacks (CBs) and graphite nanofibers (GNFs) to check the influence of carbon supports on the electroactivity of catalyst electrodes. Lastly, plasma treatment or oxyfluorination treatment effects of carbon supports on the nano structure as well as the electroactivity of the carbon supported platinum catalysts for DMFCs were studied. [Pg.411]