Nanopowder

Schenk, R., Hessel, V., Jongen, N., Buscaglia, V., Guillemet-Eritsch, S., Jones, A. G., Nanopowders produced using microreactors, Encyclopedia of Nanoscience and Nanotechnology, in press (2004). 

Fievet et al. [225] have prepared and isolated metallic nanopowders of gold, palladium, iridium, osmium, copper, silver, nickel, cobalt, lead, and cadmium via polyol... 

The Cu vapor-derived nanopowders are efficient catalytic precursors for the oxidation of a wide range of organic substrates with molecular oxygen or air and are... 

Zirconia nanopowders have attracted much attention recently due to their specific optical and electrical properties [38] and as catalysts [39]. Liang et al. [40] have synthesized pure Zr02 nanopowders via sonochemical method. In this study, the use of ultrasound has dramatically reduced the temperature of reaction and made the reaction conditions very easy to maintain. 

Homogeneous LaMn03 nanopowder with the size of 19-55 nm and with the specific surface area of 17-22 m2/g has been synthesized using a surfactant, sodium dodecyl sulphate (SDS) to prevent agglomeration [47], The sonochemically prepared LaMn03 showed a lower phase transformation temperature of 700°C, as compared to the LaMn03 prepared by other conventional methods which has been attributed to the homogenization caused by sonication. Also, a sintered density of 97% of the powders was achieved for the sonochemically prepared powders at low temperature than that of conventionally prepared powders. 

Reisee et al. [52] first described a pulsed electrodeposition and pulsed out-of-phase ultrasound to prepare copper nanopowders. Such an electrochemical method has since then employed to synthesize a variety of nanoparticles. Mancier et al. [53] have prepared Cu20 nanopowders (8 nm) with very high specific surface area of 2,000 m2/g by pulsed ultrasound assisted-electrochemistry. 

Liang J, Jiang X, Liu G, Deng Z, Zhuang J, Li F, Li Y (2003) Characterisation and synthesis of pure Zr02 nanopowders via sonochemical method. Mater Res Bull 38 161-168... 

Zhao, S. and Asuha, S. (2010) One-pot synthesis of magnetite nanopowders and their magnetic properties. Powder Technology, 197 (3), 295-297. 

Park, H., Neppolian, B., Jie, H.S., Ahn,J.-P., Park, J.-K., Anpo, M. and Lee,D.-K. (2007) Preparation of bimetal incorporated Ti02 photocatalytic nanopowders by flame method and their photocatalytic reactivity for the degradation of diluted 2-propanol. Current Applied Physics, 7, 118-123. 

D. Fabbri, C. Torri, and V. Baravelli, Effect of zeolites and nanopowder metal oxides on the distribution of chiral anhydro sugars evolved from pyrolysis of cellulose An analytical study, J. Anal. Appl. Pyrolysis, 80 (2007) 24-29. 

MAS-NMR of 19 samples of GaN nanopowders also characterized by XRPD were prepared by 4 different synthesis methods, and some were subjected to various treatments [234]. It also provides a warning against the attempts to interpret measured chemical shift positions in nano-semiconductors without taking into account the possible contribution of Knight shifts. 

Fig. 13 69Ga MAS-NMR spectra of GaN nanopowders labeled by sample codes. Left Knight shift resulting from thermal annealing. Right three different samples produced by GaAs nitridation synthesis containing c-GaN (357 ppm) as well as h-GaN (326 ppm). The broad peak at 470 ppm is assigned to Knight shifts in c-GaN. Reprinted with permission from [234], Copyright 2008 by the American Chemical Society...

Bansal NP and Zhong Z. Combustion synthesis of Sm0 5Sr0 5Co03 x and Lao 6Sr04CoO3 x nanopowders for solid oxide fuel cell cathodes. J. Power Sources 2006 158 148-153. 

R.-M. Ion, D.-V. Brezoi, Diffusion and Defect Data—Solid State Data Pt. B Solid State Phenomena, Trans Tech Publications Ltd, 2005, vol. 106, pp. 79-82, (From Nanopowders to Functional Materials). 

Nanopowders, 1 716-718 U.S. market trends, l 722t Nanoscale additives, in enhanced separations, 21 670-673 Nanoscale fabrication, bottom-up, 24 61 Nanoscale lithographic resists,... 

Figure 3.5 Nanopowders and nanostructured metal colloids accessible via the (BEt3H )-reduction method.

Zheng, H-G., Liang, J-H., Zeng, J-H., and Qian, Y-T., Preparation of nickel nanopowders in ethanol-water system(EWS), Mater. Rese. Bull., 36, 947, 2001. 

Some typical transmission electron micrographs of these polystyrene lattices are shown (Sample 2 and Sample 3) in Figure 10.6. The effects ofthe amount of stabilizer S is the relative amount of stabilizer) on the particle size is strong the more stabilizer applied, the smaller the particles are. It must be emphasized that this effective stabilization of nanopowders by our fluorinated block copolymers is not restricted to polymerization processes, but can be generalized to the fabrication of all organic nanopowders in media with low cohesion energy density, e.g., to the dispersion of dyes, explosives, or drugs. 

Chen XB, Lou YB, Sarnia ACS, Burda C, Cole JL (2005) Formation of oxynitride as the photocatalytic enhancing site in nitrogen-doped titania nanocatalysts Comparison to a commercial nanopowder. Adv Funct Mater 15 41-49... 

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