Electrochemical sensor of copper, nickel and mercury using fenchone diazine ligand complexes-modified multiwalled carbon nanotubes paste electrodes (IR)

This study aims to develop a modified multiwalled carbon nanotubes paste electrodes based fenchone azine ligand complexes for detecting copper, nickel and mercury. The fenchone diazine ligand complexes were characterized by using nuclear magnetic resonance spectroscopy, Fourier transform infrared sp...

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Main Author:	Mohamad Idris Saidin
Format:	thesis
Language:	eng
Published:	2017
Subjects:	QD Chemistry
Online Access:	https://ir.upsi.edu.my/detailsg.php?det=4724
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spelling	oai:ir.upsi.edu.my:47242020-02-27 Electrochemical sensor of copper, nickel and mercury using fenchone diazine ligand complexes-modified multiwalled carbon nanotubes paste electrodes (IR) 2017 Mohamad Idris Saidin QD Chemistry This study aims to develop a modified multiwalled carbon nanotubes paste electrodes based fenchone azine ligand complexes for detecting copper, nickel and mercury. The fenchone diazine ligand complexes were characterized by using nuclear magnetic resonance spectroscopy, Fourier transform infrared spectroscopy, X-ray photoelectron spectroscopy, energy-dispersive X-ray spectroscopy, X-ray diffraction spectroscopy, scanning electron microscopy and transmission electron microscopy. The electrochemical properties of the modified electrodes were determined using square wave stripping voltammetry, cyclic voltammetry and electrochemical impedance spectroscopy. The results show that under optimal conditions, the electrodes showed a linear range between 0.1 nM and 1.0 µM, 10 nM and 1.0 µM, 5.0 µM and 0.1 mM with the limit of detection of 80 pM, 7.4 nM and 3.7 µM for detection of copper, nickel and mercury respectively. The interferences from Ba2+, Ca2+, Cd2+, Ce3+, Co2+, Cu2+, Pb2+, Mn2+, Mg2+, Ni2+, Sr2+ and Zn2+ were negligible. Cyclic voltammetry and electrochemical impedance spectroscopy indicated that the charge transfer at the electrode-solution interface was excellent. The proposed electrodes were successfully applied for detection of copper, nickel, and mercury in wastewater samples, vegetables, and skin lightening creams, respectively. In conclusion, the developed modified electrodes are able to detect copper, nickel and mercury. By implication, the developed electrodes can be used as a suitable alternative for the determination of copper, nickel and mercury because it has characteristics such as sensitivity, selectivity and high reproducibility. 2017 thesis https://ir.upsi.edu.my/detailsg.php?det=4724 https://ir.upsi.edu.my/detailsg.php?det=4724 text eng closedAccess Doctoral Universiti Pendidikan Sultan Idris Fakulti Sains dan Matematik N/A
institution	Universiti Pendidikan Sultan Idris
collection	UPSI Digital Repository
language	eng
topic	QD Chemistry
spellingShingle	QD Chemistry Mohamad Idris Saidin Electrochemical sensor of copper, nickel and mercury using fenchone diazine ligand complexes-modified multiwalled carbon nanotubes paste electrodes (IR)
description	This study aims to develop a modified multiwalled carbon nanotubes paste electrodes based fenchone azine ligand complexes for detecting copper, nickel and mercury. The fenchone diazine ligand complexes were characterized by using nuclear magnetic resonance spectroscopy, Fourier transform infrared spectroscopy, X-ray photoelectron spectroscopy, energy-dispersive X-ray spectroscopy, X-ray diffraction spectroscopy, scanning electron microscopy and transmission electron microscopy. The electrochemical properties of the modified electrodes were determined using square wave stripping voltammetry, cyclic voltammetry and electrochemical impedance spectroscopy. The results show that under optimal conditions, the electrodes showed a linear range between 0.1 nM and 1.0 µM, 10 nM and 1.0 µM, 5.0 µM and 0.1 mM with the limit of detection of 80 pM, 7.4 nM and 3.7 µM for detection of copper, nickel and mercury respectively. The interferences from Ba2+, Ca2+, Cd2+, Ce3+, Co2+, Cu2+, Pb2+, Mn2+, Mg2+, Ni2+, Sr2+ and Zn2+ were negligible. Cyclic voltammetry and electrochemical impedance spectroscopy indicated that the charge transfer at the electrode-solution interface was excellent. The proposed electrodes were successfully applied for detection of copper, nickel, and mercury in wastewater samples, vegetables, and skin lightening creams, respectively. In conclusion, the developed modified electrodes are able to detect copper, nickel and mercury. By implication, the developed electrodes can be used as a suitable alternative for the determination of copper, nickel and mercury because it has characteristics such as sensitivity, selectivity and high reproducibility.
format	thesis
qualification_name
qualification_level	Doctorate
author	Mohamad Idris Saidin
author_facet	Mohamad Idris Saidin
author_sort	Mohamad Idris Saidin
title	Electrochemical sensor of copper, nickel and mercury using fenchone diazine ligand complexes-modified multiwalled carbon nanotubes paste electrodes (IR)
title_short	Electrochemical sensor of copper, nickel and mercury using fenchone diazine ligand complexes-modified multiwalled carbon nanotubes paste electrodes (IR)
title_full	Electrochemical sensor of copper, nickel and mercury using fenchone diazine ligand complexes-modified multiwalled carbon nanotubes paste electrodes (IR)
title_fullStr	Electrochemical sensor of copper, nickel and mercury using fenchone diazine ligand complexes-modified multiwalled carbon nanotubes paste electrodes (IR)
title_full_unstemmed	Electrochemical sensor of copper, nickel and mercury using fenchone diazine ligand complexes-modified multiwalled carbon nanotubes paste electrodes (IR)
title_sort	electrochemical sensor of copper, nickel and mercury using fenchone diazine ligand complexes-modified multiwalled carbon nanotubes paste electrodes (ir)
granting_institution	Universiti Pendidikan Sultan Idris
granting_department	Fakulti Sains dan Matematik
publishDate	2017
url	https://ir.upsi.edu.my/detailsg.php?det=4724
_version_	1747833140413464576

Electrochemical sensor of copper, nickel and mercury using fenchone diazine ligand complexes-modified multiwalled carbon nanotubes paste electrodes (IR)

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