Citrate-assisted synthesis of prickly nickel microwires and their surface modification with silver

A new type of prickly nickel microwires assembled by thornlike nanocrystals was fabricated through a simple chemical reduction route with the assistance of citrate. Thus-prepared nickel wires were subsequently morphology-retained modified with a thin silver shell via transmetallation. Compared with...

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Bibliographic Details
Published in:Journal of colloid and interface science 2007-03, Vol.307 (2), p.554-558
Main Authors: Ni, Xiaomin, Zhang, Junhao, Zhang, Yongfeng, Zheng, Huagui
Format: Article
Language:English
Subjects:
Carbon
Catalysis
Chemistry
Exact sciences and technology
General and physical chemistry
Magnetic measurements
Nickel
Theory of reactions, general kinetics. Catalysis. Nomenclature, chemical documentation, computer chemistry
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Summary:A new type of prickly nickel microwires assembled by thornlike nanocrystals was fabricated through a simple chemical reduction route with the assistance of citrate. Thus-prepared nickel wires were subsequently morphology-retained modified with a thin silver shell via transmetallation. Compared with the uncoated sample, the Ni core–Ag shell wires exhibited much-enhanced oxidation resistance, slightly changed magnetic properties and stark different catalysis for the creation of carbon particles in pyrolyzing acetone. A new type of prickly Ni core–Ag shell wires assembled by thornlike nanocrystals was fabricated through transmetallation reaction of nickel wires with Ag + ions. Compared with the pure nickel sample, the Ni core–Ag shell wires exhibited much-enhanced oxidation resistance, slightly changed magnetic properties and stark different catalysis for the creation of carbon particles in pyrolyzing acetone.
ISSN:0021-9797
1095-7103
DOI:10.1016/j.jcis.2006.12.028