Journal
PARTICLE & PARTICLE SYSTEMS CHARACTERIZATION
Volume 31, Issue 2, Pages 236-244Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/ppsc.201300195
Keywords
bimetallic nanostructures; oxidation resistance; magnetic core-shell nanoparticles; Au-Ni nanoparticles
Funding
- UGC
- CSIR-NCL [MLP021526]
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Core-shell bimetallic Au@Ni nanoparticles, with gold cores and thin nickel shells with overall size less than 10 nm, are synthesized and stabilized in pure cubic (fcc) and hexagonal (hcp) phase. Due to their unique crystal, electronic, and geometric structure, they show interesting magnetic and chemical properties. The Au@Ni-fcc is magnetic, whereas Au@Ni-hcp is non-magnetic. Both the bimetallic nanostructures are stable to surface oxidation until 150 degrees C and show excellent catalytic activity for p-nitrophenol reduction reaction.
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