Oxides nanoparticles

Scheme 2. General scheme showing the entrapment process of unprotected noble metal nanoclusters within the matrix of metal oxide nanoparticles. (Reprinted from Ref [18], 2004, with permission from Elsevier.)...

In contrast with the Schiff base salen, salicylaldehyde oxime (79) (salox) complexes of Co have received comparatively little attention, but a series of bis-bidentate divalent complexes of the form iraiis-Co(sa 1 ox)2( D M SO)2 have been reported.343 The heterocyclic bidentate oxime violurate (lH,3H-pyrimidine-2,4,5,6-tetrone 5-oximate, Hvi) (80) and its /V-methyl (mvi) and /V,/V -dimethyl (dmvi) derivatives form high-spin divalent [Co(vi)]+ and Co(vi)2 complexes, whereas [Co(vi)3] is low spin.344 The mixed-ligand Co(dmvi)2(phen) complex is also low spin. The crystal structure of m-Co(pxo)2Br2 (pxo = 2-acetylpyridine-l-oxide oxime) is isostructural with the Ni11 relative.345 The dichloro complex also adopts a cis configuration. The tridentate dioximes 2,6-diformyl-4-methylphenol dioxime and 2,6-diacetyl-4-methylphenol dioxime (Hdampo) form binuclear complexes of the type (81a) and (81b) respectively.346 Cobalt oxide nanoparticles were prepared by... 

Wu C, Mosher BP, Zeng T (2008) Chemically-mechanically assisted synthesis of metallic and oxide nanoparticles in ambient conditions. J Nanosci Nanotechnol 8 386-389... 

The reactive crystallization has some peculiar characteristics like insoluble product, initiation of reaction by change in pH and conductivity. In this case the solution becomes saturated and eventually supersaturated with respect to reactant nucleation [30], The ultrasound assisted decomposition precursors includes dissolving metal organic precursors in organic solvents/water with the assistance of surfactants leads to monodisperse and reduced metal/metal oxide nanoparticles. 

Xiong F1M, Shchukin DG, Mohwald H, Xu Y, Xia YY (2009) Sonochemical synthesis of hghly luminescent zinc oxide nanoparticles doped with magnesium (II). Angew Chem Int Ed... 

Stengl V, Bakardjieva S, Marikova M, Bezdicka P, Subrt J (2003) Magnesium oxide nanoparticles prepared by ultrasound enhanced hydrolysis of Mg-alkoxides. Mater Lett 57 3998 1003... 

Karami H, Karimi MA, Haghdar S, Sadeghi A, Mir-Ghasemi R, Mahdi-Khani S (2008) Synthesis of lead oxide nanoparticles by sonochemical method and its application as cathode and anode of lead-acid batteries. Mater Chem Phys 108 337-344... 

Zboril R, Machala L, Mashlan M, Sharma V (2004) Iron(III) oxide nanoparticles in the thermally induced oxidative decomposition of prussian blue, Fe4[Fe(CN)6]3. Cryst Growth Design 4(6) 1317-1325... 

Aslant M, Schultz EA, Sun T, Meade T, Dravid VP (2007) Synthesis of amine-stabilized aqueous colloidal iron oxide nanoparticles. Cryst Growth Design 7(3) 471 175... 

Magnetic iron oxide nanoparticles synthesis, stabilization, vectorization, physicochemical characterizations, and biological applications. Chemical Reviews, 108 (6), 2064-2110. 

M. (2008) One-minute synthesis of crystalline binary and ternary metal oxide nanoparticles. Chemical Communications, (7), 886-888. 

Macdonald, J.E. and Veinot, J.G.C. (2008) Removal of residual metal catalysts with iron/iron oxide nanoparticles from coordinating environments. Langmuir, 24 (14), 7169-7177. 

Li, Q., Li, Y.W., Wu, P., Xie, R., and Shang, J.K. (2008) Palladium oxide nanoparticles on nitrogen-doped titanium oxide accelerated photocatalytic disinfection and post-illumination catalytic memory . Advanced Materials, 20 (19), 3717-3723. 

Muller, K., Skepper, J.N., Posfai, M., Trivedi, R., Howarth, S., Corot, C., Lancelot, E., Thompson, P.W., Brown, A.P., and Gillard, J.H. (2007) Effect of ultrasmall superparamagnetic iron oxide nanoparticles (Ferumoxtran-10) on human monocyte-macrophages invitro. Biomaterials, 28 (9), 1629-1642. 

George, S. et al. (2010) Use of a rapid cytotoxicity screening approach to engineer a safer zinc oxide nanoparticle through iron doping. ACS Nano, 4 (1), 15-29. 

Voinov, M.A. et al. (2011) Surface-mediated production of hydroxyl radicals as a mechanism of iron oxide nanoparticle biotoxicity. Journal of the American Chemical Society, 133 (1), 35-41. 

Simon-Deckers, A. et al. (2008) In vitro investigation of oxide nanoparticle and carbon nanotube toxicity and intracellular accumulation in A549 human pneumocytes. Toxicology, 253 (1-3), 137-146. 

Karlsson, H.L. et al. (2008) Copper oxide nanoparticles are highly toxic a comparison between metal oxide nanoparticles and carbon nanotubes. Chemical Research in Toxicology, 21 (9), 1726-1732. 

Jang, Y.J., Simer, C. and Ohm, T. (2006) Comparison of zinc oxide nanoparticles and its nano-crystalline particles on the photocatalytic degradation of methylene blue. Materials Research Bulletin, 41,67-77. 

Bio-Nanohybrids Based on Metal and Metal Oxide Nanoparticles... 

All the examples gathered here demonstrate the possibility to control the growth of metallic and oxide nanoparticles using biological templates. A wide variety of chemical composition, particle size and assemblage can be obtained via these approaches. Moreover, due to the biological nature of the template, applications in fields related to biotechnology and medicinal science can be envisioned. 

Fig. 21 TEM images of (a) as-synthesized iron oxide nanoparticles, (b) poly (amino acid)-coated iron oxide nanoparticles in water. Scale bars. 80 nm (Adapted from[79])...

Fig. 24 HER2/neu antibody-conjugated poly(amino acid)-coated iron oxide nanoparticles for breast cancer cell imaging. The part labeled as 1 is shown enlarged. (Adapted from [79])...

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