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Synthesis of Co‐doped CeO 2 nanorods modified glassy carbon electrode for electrochemical detection of nitrobenzene
Author(s) -
Arul N. Sabari,
Mangalaraj D.
Publication year - 2015
Publication title -
crystal research and technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.377
H-Index - 64
eISSN - 1521-4079
pISSN - 0232-1300
DOI - 10.1002/crat.201500018
Subject(s) - nitrobenzene , nanorod , materials science , electrochemistry , electrode , glassy carbon , nanoparticle , fluorite , cobalt , analytical chemistry (journal) , chemical engineering , nuclear chemistry , cyclic voltammetry , nanotechnology , catalysis , chemistry , chromatography , organic chemistry , metallurgy , engineering
CeO 2 nanoparticles (CNPs), Co‐doped CeO 2 nanoparticles (CCNPs) and Co‐doped CeO 2 nanorods (CCNRs) were synthesized by simple co‐precipitation method and explored their sensing behaviour towards nitrobenzene. XRD and TEM analysis confirmed the presence of cubic fluorite structure of the CNPs, CCNPs and CCNRs. EDX analysis confirmed the presence of Cobalt in CeO 2 nanorods. The electrochemical sensing of nitrobenzene was carried out using CCNRs‐modified glassy carbon (GC) electrodes by means of cyclic voltammetric (CV) technique. The peak current ( I p ) was found to be linearly co‐related to nitrobenzene (NB) concentration (R 2 = 0.9665). A substantial enhancement in cathodic peak current (C1), and sensitivity (∼738.8 nA/μM) was observed for the CCNRs‐modified GC electrode than those of CNPs and CCNPs‐modified electrodes.