Premium
Synergistic Effect of Polyoxometalate and Single Walled Carbon Nanotubes on Peroxidase‐like Mimics and Highly Sensitive Electrochemical Detection of Hydrogen Peroxide
Author(s) -
Sahraoui Yosra,
Chaliaa Sana,
Maaref Abderrazak,
Haddad Amor,
Bessueille Francois,
JaffrezicRenault Nicole
Publication year - 2020
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.201900415
Subject(s) - hydrogen peroxide , polyoxometalate , carbon nanotube , amperometry , electrochemistry , detection limit , chemistry , covalent bond , inorganic chemistry , peroxidase , materials science , nuclear chemistry , catalysis , nanotechnology , organic chemistry , electrode , chromatography , enzyme
A novel Keggin‐type metatungstate hybrid POMs ((APy) 6 [H 2 W 12 O 40 ])/carboxylic acid functionalized single‐walled carbon nanotube based amperometric sensing platform was successfully constructed for the sensitive detection of hydrogen peroxide. A simple and reliable procedure was implemented for the synthesis of new composite materials obtained by the covalent grafting of (APy) 6 [H 2 W 12 O 40 ] onto the surface of (SWCNT‐COOH). The synergistic effect of single walled carbon nanotubes on the electrochemical behavior of (APy) 6 [H 2 W 12 O 40 ] was evidenced through the increase of the oxidation and reduction peaks of the polyoxometalate. The sensitivity of hydrogen peroxide detection was increased by a factor of 38.5 in presence of SWCNTs, showing their high influence on peroxidase‐like mimics of (APy) 6 [H 2 W 12 O 40 ]. The detection limit, the response time, the repeatability and the shelf lifetime were respectively 0.4 μM, 10 s, <4%, 60 days.