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Synthesis and Reactivity of Magnetically Diverse Au@Ni Core–Shell Nanostructures
Author(s) -
Bharathan Vysakh A.,
Raj Govind K.,
Joy Pattayil A.,
Vinod Chathakudath P.
Publication year - 2014
Publication title -
particle and particle systems characterization
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.877
H-Index - 56
eISSN - 1521-4117
pISSN - 0934-0866
DOI - 10.1002/ppsc.201300195
Subject(s) - bimetallic strip , materials science , nickel , nanostructure , reactivity (psychology) , shell (structure) , nanoparticle , catalysis , hexagonal crystal system , chemical engineering , crystal structure , phase (matter) , nanotechnology , crystallography , metallurgy , chemistry , composite material , metal , medicine , alternative medicine , engineering , organic chemistry , pathology , biochemistry
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 °C and show excellent catalytic activity for p‐nitrophenol reduction reaction.