Synthesis of NiO–CeO2 nanocomposite for electrochemical sensing of perilous 4-nitrophenol

Well-crystalline NiO–CeO 2 nanocomposites have been fabricated by ignition method and investigated by X-ray diffraction, Fourier Transform Infrared, UV–Vis diffuse reflectance spectroscopy, Thermal gravimetric analysis, BET surface area, and transmission electron microscopy. The detailed characteriz...

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Published in:Journal of materials science. Materials in electronics 2019-10, Vol.30 (19), p.17643-17653
Main Authors: Ahmad, Naushad, Alam, Manawwer, Wahab, Rizwan, Ahmad, Javed, Ubaidullah, Mohd, Ansari, Anees A., Alotaibi, Nawaf M.
Format: Article
Language:English
Subjects:
Cerium oxides
Characterization and Evaluation of Materials
Chemistry and Materials Science
Diffuse reflectance spectroscopy
Electrodes
Fluorite
Fourier transforms
Gravimetric analysis
Infrared analysis
Materials Science
Nanocomposites
Nickel oxides
Nitrophenol
Optical and Electronic Materials
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cited_by cdi_FETCH-LOGICAL-c356t-29318c8cd2a3cc2850b30e265f709440ef6ad1f86e554398e6818cfa8fa5eb6d3
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container_end_page 17653
container_issue 19
container_start_page 17643
container_title Journal of materials science. Materials in electronics
container_volume 30
creator Ahmad, Naushad
Alam, Manawwer
Wahab, Rizwan
Ahmad, Javed
Ubaidullah, Mohd
Ansari, Anees A.
Alotaibi, Nawaf M.
description Well-crystalline NiO–CeO 2 nanocomposites have been fabricated by ignition method and investigated by X-ray diffraction, Fourier Transform Infrared, UV–Vis diffuse reflectance spectroscopy, Thermal gravimetric analysis, BET surface area, and transmission electron microscopy. The detailed characterizations disclosed that the pre-calcine (700 °C) nanocomposite (NCC) has two pure phases: cubic fluorite phase (CeO 2 ) and cubic face-centered phase (NiO). Finally, the pre-calcine NCC nanocomposite was applied as electron intermediators for the electrochemical sensing of 4-nitrophenol (4-NP). Compared with as-grown modified electrode (NCG/GCE), pre-calcine electrode (NCC/GCE) exhibited more excellent conductivity and better electrocatalytic mediator for 4-NP. It was found that the NCC/GCE sensor displayed diffusion-controlled kinetics and excellent sensitivity (3.68 AμM −1  cm −2 ). The reduction current is directly proportional to the 4-NP concentration, ranging from 1 to 20 μM with lower detection limit of 2.48 μM.
doi_str_mv 10.1007/s10854-019-02113-2
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subjects Cerium oxides
Characterization and Evaluation of Materials
Chemistry and Materials Science
Diffuse reflectance spectroscopy
Electrodes
Fluorite
Fourier transforms
Gravimetric analysis
Infrared analysis
Materials Science
Nanocomposites
Nickel oxides
Nitrophenol
Optical and Electronic Materials
title Synthesis of NiO–CeO2 nanocomposite for electrochemical sensing of perilous 4-nitrophenol
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