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Molecule‐Based Cobalt Hexacyanoferrate Nanoparticle: Synthesis, Characterization, and Its Electrochemical Properties
Author(s) -
LiHong Shi,
Tian Wu,
MeiJia Wang,
Di LI,
YuanJian Zhang,
JingHong Li
Publication year - 2005
Publication title -
chinese journal of chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.28
H-Index - 41
eISSN - 1614-7065
pISSN - 1001-604X
DOI - 10.1002/cjoc.200590149
Subject(s) - chemistry , nanoparticle , electrochemistry , cobalt , cyclic voltammetry , molecule , glassy carbon , supporting electrolyte , fourier transform infrared spectroscopy , electrolyte , pulmonary surfactant , inorganic chemistry , crystallite , electrode , chemical engineering , crystallography , organic chemistry , biochemistry , engineering
Cobalt hexacyanoferrate (CoHCF) nanoparticles, with an average size of less than 50 nm for individual crystallite, were synthesized by simply mixing appropriate reactants in the absence of surfactant or template. Elemental analysis provided a stoichiometric formula, K 0.2 Co 1.4 [Fe(CN) 6 ]· x H 2 O for this compound. The involvement of both ferromagnetic Co 1.5 II [Fe III (CN) 6 ] and antiferromagnetic KCo III [Fe II (CN) 6 ] species in the CoHCF complex was effectively proved by Fourier transform infrared spectroscopy, so was the existence of certain amounts of interstitial water molecules. A glassy carbon electrode modified with these CoHCF nanoparticles had high stable and reversible cyclic voltammetric responses even at high scan rates and its electrochemical properties were affected by the nature of counter cations and the concentration of supporting electrolyte. The prepared nanoparticle films, as a mediator on electrode surface, exhibited considerable electrocatalytic activity toward the oxidation of dopamine.