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Electrochemical Preparation and Characterization of Lanthanum Hexacyanoferrate Modified Electrode
Author(s) -
Ping Wu,
ChenXin Cai
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.200590127
Subject(s) - chemistry , lanthanum , horizontal scan rate , electrochemistry , cyclic voltammetry , redox , inorganic chemistry , scanning electron microscope , supporting electrolyte , electrode , electrolyte , x ray photoelectron spectroscopy , fourier transform infrared spectroscopy , glassy carbon , analytical chemistry (journal) , chemical engineering , organic chemistry , materials science , composite material , engineering
An electroactive polynuclear inorganic compound of rare earth metal hexacyanoferrate, lanthanum hexacyanoferrate (LaHCF), was prepared by electrochemical deposition on the surface of a glassy carbon electrode with a potential cycling procedure. The cyclic voltammogram of LaHCF exhibits a pair of well‐defined redox peaks with the formal potential of 208 mV (vs. SCE) at a scan rate of 100 mV/s in 0.2 mol/L NaCl solution and the redox peak currents increase linearly with the square root of the scan rate up to 1000 mV/s. The effects of the concentration of supporting electrolyte on the electrochemical characteristics of LaHCF were studied by voltammetry. LaHCF was also characterizated by scanning electron microscope (SEM), FTIR and XPS techniques.