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Trace Level Determination of Hydrogen Peroxide at a Carbon Ceramic Electrode Modified with Copper Oxide Nanostructures
Author(s) -
Razmi Habib,
Nasiri Hojjat
Publication year - 2011
Publication title -
electroanalysis
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.574
H-Index - 128
eISSN - 1521-4109
pISSN - 1040-0397
DOI - 10.1002/elan.201000716
Subject(s) - amperometry , hydrogen peroxide , copper , electrode , materials science , carbon paste electrode , scanning electron microscope , electrochemistry , inorganic chemistry , carbon fibers , electrochemical gas sensor , copper oxide , detection limit , oxide , nuclear chemistry , chemistry , cyclic voltammetry , metallurgy , composite material , chromatography , organic chemistry , composite number
An electrochemical sensor was developed for determination of hydrogen peroxide based on nanocopper oxides modified carbon sol‐gel or carbon ceramic electrode (CCE). The modified electrode was prepared by electrodeposition of metallic copper on the CCE surface and derivatized in situ to copper oxides nanostructures and characterized by scanning electron microscopy (SEM) and X‐ray diffraction (XRD) techniques. The modified electrode responded linearly to the hydrogen peroxide (H 2 O 2 ) concentration over the range 0.78–193.98 µmol L −1 with a detection limit of 71 nmol L −1 ( S / N =3) and the sensitivity of 0.697 A mol −1 L cm −2 . This electrode was used as selective amperometric sensor for determination of H 2 O 2 contents in hair coloring creams.