Characterization of ionophore–doped graphene–based biocomposite thin film for detection of potassium ion using surface plasmon resonance

The preparation of ionophore doped graphene based biocompositeusing chitosan, graphene oxide and valinomycin has been studied. After the reaction, valinomycin immobilized in chitosan–graphene oxide thin film was prepared using spin coating technique. The obtained thin film was characterized and conf...

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Main Author:	Zainudin, Afiq Azri
Format:	Thesis
Language:	English
Published:	2017
Subjects:	Ionophores Surface plasmon resonance
Online Access:	http://psasir.upm.edu.my/id/eprint/70921/1/FS%202017%2046%20-%20IR.pdf
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id	my-upm-ir.70921
record_format	uketd_dc
spelling	my-upm-ir.709212019-08-07T06:46:07Z Characterization of ionophore–doped graphene–based biocomposite thin film for detection of potassium ion using surface plasmon resonance 2017-06 Zainudin, Afiq Azri The preparation of ionophore doped graphene based biocompositeusing chitosan, graphene oxide and valinomycin has been studied. After the reaction, valinomycin immobilized in chitosan–graphene oxide thin film was prepared using spin coating technique. The obtained thin film was characterized and confirmed by Fourier Transform Infrared Spectroscopy (FTIR) and X-Ray Photoelectron Spectroscopy (XPS). Surface morphology was evaluated by atomic force microscopy (AFM), shows the thin film is smooth and homogenous. Absorption and transmittance of the thin film were evaluatedby the ultraviolet-visible (UV-Vis-NIR) spectroscopy. Valinomycin immobilized in chitosan–graphene oxide thin film has been studied as a sensor element for potassium ion by using surface plasmon resonance (SPR). The K+can be detected by measuring SPR signal with a thin film C–GO–V deposited on a gold film when the film in contact with the ion in solution. The sensor produces a linear response for K+up to 100 ppm with a sensitivity 0.00948º ppm-1. These results indicate that the C–GO–V films shows potential for the detection K+in solution. Ionophores Surface plasmon resonance 2017-06 Thesis http://psasir.upm.edu.my/id/eprint/70921/ http://psasir.upm.edu.my/id/eprint/70921/1/FS%202017%2046%20-%20IR.pdf text en public masters Universiti Putra Malaysia Ionophores Surface plasmon resonance
institution	Universiti Putra Malaysia
collection	PSAS Institutional Repository
language	English
topic	Ionophores Surface plasmon resonance
spellingShingle	Ionophores Surface plasmon resonance Zainudin, Afiq Azri Characterization of ionophore–doped graphene–based biocomposite thin film for detection of potassium ion using surface plasmon resonance
description	The preparation of ionophore doped graphene based biocompositeusing chitosan, graphene oxide and valinomycin has been studied. After the reaction, valinomycin immobilized in chitosan–graphene oxide thin film was prepared using spin coating technique. The obtained thin film was characterized and confirmed by Fourier Transform Infrared Spectroscopy (FTIR) and X-Ray Photoelectron Spectroscopy (XPS). Surface morphology was evaluated by atomic force microscopy (AFM), shows the thin film is smooth and homogenous. Absorption and transmittance of the thin film were evaluatedby the ultraviolet-visible (UV-Vis-NIR) spectroscopy. Valinomycin immobilized in chitosan–graphene oxide thin film has been studied as a sensor element for potassium ion by using surface plasmon resonance (SPR). The K+can be detected by measuring SPR signal with a thin film C–GO–V deposited on a gold film when the film in contact with the ion in solution. The sensor produces a linear response for K+up to 100 ppm with a sensitivity 0.00948º ppm-1. These results indicate that the C–GO–V films shows potential for the detection K+in solution.
format	Thesis
qualification_level	Master's degree
author	Zainudin, Afiq Azri
author_facet	Zainudin, Afiq Azri
author_sort	Zainudin, Afiq Azri
title	Characterization of ionophore–doped graphene–based biocomposite thin film for detection of potassium ion using surface plasmon resonance
title_short	Characterization of ionophore–doped graphene–based biocomposite thin film for detection of potassium ion using surface plasmon resonance
title_full	Characterization of ionophore–doped graphene–based biocomposite thin film for detection of potassium ion using surface plasmon resonance
title_fullStr	Characterization of ionophore–doped graphene–based biocomposite thin film for detection of potassium ion using surface plasmon resonance
title_full_unstemmed	Characterization of ionophore–doped graphene–based biocomposite thin film for detection of potassium ion using surface plasmon resonance
title_sort	characterization of ionophore–doped graphene–based biocomposite thin film for detection of potassium ion using surface plasmon resonance
granting_institution	Universiti Putra Malaysia
publishDate	2017
url	http://psasir.upm.edu.my/id/eprint/70921/1/FS%202017%2046%20-%20IR.pdf
_version_	1747812937087582208

Characterization of ionophore–doped graphene–based biocomposite thin film for detection of potassium ion using surface plasmon resonance

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