Abstract
Cu–Ni fcc alloy nanoparticles (NPs) of tunable atomic ratios were generated in SiO2 films. The films were prepared using the Cu(NO3)2 and Ni(NO3)2 co-doped inorganic–organic hybrid silica sols by single dipping. Transparent, crack-free, glassy SiO2 films of 310 ± 10 nm in thickness embedded with high mol percent of Cu–Ni alloy NPs were yielded after annealing at 750 °C in 10% H2-90% Ar atmosphere. Nominal compositions of the films were 20 mol% (Cu–Ni)-80 mol% SiO2. Optical spectral study of the heat-treated films showed disappearance of Cu plasmon bands due to Cu–Ni alloy formation. Grazing incidence X-ray diffraction (GIXRD) studies revealed the formation of Cu–Ni alloy (2:1, 1:1 and 1:2) NPs inside the SiO2 film. GIXRD showed a systematic shifting of the diffraction peaks with respect to the fcc Cu–Ni alloy composition, maintaining the nominal ratios. Transmission electron microscopy (TEM) studies of the representative Cu0.5Ni0.5-doped film showed existence of homogeneously dispersed Cu–Ni alloy NPs of average size 6.35 nm inside the SiO2 matrix. The energy dispersive X-ray scattering (EDX) analysis of the individual NPs using the nano-probe (scanning TEM mode) confirmed the presence of both the Cu and Ni with the desired atomic ratio.
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Ahmed T, Ramanujachary KV, Lofland SE, Furiato A, Gupta G, Shivaprasad SM, Ganguli AK (2008) Bimetallic Cu–Ni nanoparticles of varying composition (CuNi3, CuNi, Cu3Ni). Colloids Surf A 331:206–212
Apostolova I, Wesselinowa JM (2009) Possible low-Tc nanoparticles for use in magnetic hyperthermia treatments. Solid State Commun 149:986–990
Chatterjee J, Bettge M, Haik Z, Chen CJ (2005) Synthesis and characterization of polymer encapsulated Cu–Ni magnetic nanoparticles for hyperthermia applications. J Magn Magn Mater 293:303–309
D’Acapito F, Battaglin G, Cattaruzza E, Gonella F, Maurizio C, Mazzoldi P, Mobilio S, Zontone F (2000) Cu–Ni alloy nanocluster formation by ion implantation in silicate glasses: structure and properties. Eur Phys J D 10:123–130
De G (1998) Sol-gel synthesis of metal nanoclusters-silica composite films. J Sol Gel Sci Technol 11:289–298
De G, Rao CNR (2003) Two dimensional Au and Au–Cu nanocrsystals with orientation in (111) plane embedded in glassy silica films. J Phys Chem B 107:13597–13600
De G, Mattei G, Mazzoldi P, Sada C, Battaglin G, Quaranta A (2000) Au–Cu alloy nanocluster doped SiO2 films by sol-gel processing. Chem Mater 12:2157–2160
Díaz-Parralejo A, Caruso R, Ortiz AL, Guiberteau F (2004) Densification and porosity evaluation of ZrO2-3 mol.%Y2O3 sol-gel thin films. Thin Solid Films 458:92–97
Falconieri M, Salvetti G, Cattaruzza E, Gonella F, Mazzoldi P, Piovesan M, Battaglin G, Polloni R (1998) Large third-order optical nonlinearity of nanocluster-doped glass formed by ion implantation of copper and nickel in silica. Appl Phys Lett 73:288–290
Ghosh SK, Grover AK, Dey GK, Kulkarni UD, Dusane RO, Suri AK, Banerjee S (2006) Structureal characterization of electrodeposited nanophase Ni–Cu alloys. J Mater Res 21:45–61
Jafarian M, Moghaddam RB, Mahjani MG, Gobal F (2006) Electro-catalytic oxidation of methanol on a Ni–Cu alloy in alkaline medium. J Appl Electrochem 36:913–918
James P, Eriksson O, Johansson B, Abrikosov IA (1999) Calculated magnetic properties of binary alloys between Fe, Co, Ni, and Cu. Phys Rev B 59:419–430
Kim H, Lu C, Worrell WL, Vohs JM, Gorte RJ (2002) Cu–Ni cermet anodes for direct oxidation of methane in solid-oxide fuel cells. J Electrochem Soc 149:A247–A250
Kiran PP, Bhaktha BNS, Rao DN, De G (2004) Nonlinear optical properties and surface plasmon enhanced optical limiting in Ag–Cu nanoclusters co-doped in SiO2 sol-gel films. J Appl Phys 96:6717–6723
Lázaro MJ, Echegoyen Y, Suelves I, Palacios JM, Moliner R (2007) Decomposition of methane over Ni–SiO2 and Ni–Cu–SiO2 catalysts: effect of catalyst preparation method. Appl Catal A 329:22–29
Li Y, Chen J, Chang L, Qin Y (1998) The doping effect of copper on the catalytic growth of carbon fibers for methane over a Ni/Al2O3 catalyst prepared from Feitknecht compound precursor. J Catal 178:76–83
Lilly MB, Brezovich IA, Atkinson WJ (1985) Hyperthermia induction with thermally self-regulated ferromagnetic implants. Radiology 154:243–244
Massalski TB, Okamoto H, Subramanian PR, Kacprzak L (1990) Binary alloy phase diagrams. Materials Park, Ohio
Mattei G, de Julián Fernández C, Mazzoldi P, Sada C, De G, Battaglin G, Sangregorio C, Gatteschi D (2002) Synthesis, structure and magnetic properties of Co, Ni and Co–Ni alloy nanocluster doped SiO2 films by sol-gel processing. Chem Mater 14:3440–3447
Medda SK, De G (2009) Inorganic-organic nanocomposite based hard coatings on plastics using in situ generated nano-SiO2 bonded with ≡Si–O–Si–PEO hybrid network. Ind Eng Chem Res 48:4326–4333
Medda SK, De S, De G (2005) Synthesis of Au nanoparticle doped SiO2–TiO2 films: tuning of Au surface plasmon band position through controlling the refractive index. J Mater Chem 15:3278–3284
Pal S, De G (2005) A new approach for the synthesis of Au–Ag alloy nanoparticle incorporated SiO2 films. Chem Mater 17:6161–6166
Pal S, De G (2007) Oriented Au–Cu nanoalloy particle incorporated SiO2 films using a new layer by layer deposition technique. J Mater Chem 17:493–498
Pal S, De G (2009) Reversible transformations of silver oxide and metallic silver nanoparticles inside SiO2 films. Mater Res Bull 44:355–359
Qiwu W, Jianlong Y, Jingfang R, Minming H, Chunhu Y (1990) Structure and catalytic properties of Cu–Ni bimetallic catalysts for hydrogenation. Catal Lett 4:63–74
Rao L, Reddy NK, Coulombe S, Meunier J, Munz RJ (2007) Carbon nanotubes as nanoparticles collector. J Nanoparticle Res 9:689–695
Zhang Y, Huang W, Habas SE, Kuhn JN, Grass ME, Yamada Y, Yang P, Somorjai GA (2008) Near-monodisperse Ni–Cu bimetallic nanocrystals of variable composition: controlled synthesis and catalytic activity for H2 generation. J Phys Chem C 112:12092–12095
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The authors thank DST, Govt. of India for financial support under the National Nano Mission program. Necessary permission to publish this paper has been obtained.
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Pramanik, S., Pal, S., Bysakh, S. et al. Cu x Ni1−x alloy nanoparticles embedded SiO2 films: synthesis and structure. J Nanopart Res 13, 321–329 (2011). https://doi.org/10.1007/s11051-010-0033-0
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DOI: https://doi.org/10.1007/s11051-010-0033-0