Synthesis of Co‐doped CeO₂ nanorods modified glassy carbon electrode for electrochemical detection of nitrobenzene

Abstract

CeO2 nanoparticles (CNPs), Co‐doped CeO2 nanoparticles (CCNPs) and Co‐doped CeO2 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 CeO2 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 (Ip) was found to be linearly co‐related to nitrobenzene (NB) concentration (R2 = 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.

An electrochemical sensor for nitrobenzene using π-conjugated polymer-embedded nanosilver

“…7 Moreover these modified electrodes enhance the sensitivity of the detection of NB compared to conventional electrodes. Nanomaterials previously used to modify electrodes for electrochemical detection include metal nanoparticles such as AgNPs, AuNPs and CeO 2 14 as well as carbon-based nanomaterials such as carbon nanotubes (CNTs) and reduced graphene oxide. 7,15 Metal nanoparticles are used due to their unique optical, catalytic and electronic properties.…”

Impact of CeO2 modified cathode and PANI modified anode on tannery wastewater fed microbial fuel cell performance

“…The only elements present were cerium and oxygen with mass percentages of 69.89 % and 27.79 %, respectively. The presence of cerium and oxygen within the sample was demonstrated, while the detected carbon peak arose because of the carbon tape used to mount the sample for analysis ( Arul and Mangalaraj, 2015 , Jayachandran et al, 2022 ).…”

Ni/Co in and on CeO2: a comparative study on the dry reforming reaction

“…Further, Co 2p 3/2 is deconvoluted into three peaks at 777.5 eV, 779.4 eV, and 781.1 eV conrming that the Co was in 0, +2 and +3 oxidation states, respectively. 79,80 Fig. 3 Co 2+ is usually conrmed by the satellite peaks at 785.3 eV in the Co supported over CeO 2 catalyst (Fig.…”