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Synthesis of Functionalized MWCNTs Decorated with Copper Nanoparticles and Its Application as a Sensitive Sensor for Amperometric Detection of H 2 O 2
Author(s) -
Rezaei B.,
Askarpour N.,
Ghiaci M.,
Niyazian F.,
Ensafi A. A.
Publication year - 2015
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.201400612
Subject(s) - amperometry , ascorbic acid , detection limit , copper , cyclic voltammetry , nanocomposite , electrochemical gas sensor , carbon nanotube , nanoparticle , selectivity , redox , materials science , nuclear chemistry , buffer solution , electrode , analytical chemistry (journal) , electrochemistry , inorganic chemistry , chemistry , nanotechnology , chromatography , organic chemistry , catalysis , food science
Functionalized‐multiwall carbon nanotubes decorated with redox active copper nanoparticles have been fabricated for sensitive enzyme‐less H 2 O 2 detection. The new nanocomposite was characterized by Transmission electron microscopy, energy dispersive X‐ray analysis and cyclic voltammetry. The response of the modified electrode to H 2 O 2 was examined using amperometry at −0.45 V vs. Ag/AgCl in a buffer solution at pH 10.0. The developed sensor displayed linear concentration ranges of 0.5–10.0 and 10.0–10000.0 µmol L −1 with a detection limit of 0.3 µmol L −1 . The proposed sensor displayed good selectivity for H 2 O 2 detection in the presence of common interferences such as ascorbic acid.