CuxNi12x alloy nanoparticles embedded SiO2 films: synthesis and structure
IR@CGCRI: CSIR-Central Glass and Ceramic Research Institute, Kolkata
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| Title |
CuxNi12x alloy nanoparticles embedded SiO2 films:
synthesis and structure
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| Creator |
Pramanik, Sourav
Pal, Sudipto Bysakh, Sandip De, Goutam |
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| Subject |
Processing Science
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| Description |
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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| Publisher |
Springer
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| Date |
2011
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| Type |
Article
PeerReviewed |
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| Format |
application/pdf
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| Identifier |
http://cgcri.csircentral.net/653/1/J_Nanopart_Res_13_(2011)_321%E2%80%93329.pdf
Pramanik, Sourav and Pal, Sudipto and Bysakh, Sandip and De, Goutam (2011) CuxNi12x alloy nanoparticles embedded SiO2 films: synthesis and structure. Journal of Nanoparticle Research, 13 (1). pp. 321-329. ISSN 1388-0764 |
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| Relation |
http://cgcri.csircentral.net/653/
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