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
Online Access:http://psasir.upm.edu.my/id/eprint/70921/1/FS%202017%2046%20-%20IR.pdf
http://psasir.upm.edu.my/id/eprint/70921/
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spelling my.upm.eprints.709212019-08-07T06:46:07Z http://psasir.upm.edu.my/id/eprint/70921/ Characterization of ionophore–doped graphene–based biocomposite thin film for detection of potassium ion using surface plasmon resonance 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. 2017-06 Thesis NonPeerReviewed text en http://psasir.upm.edu.my/id/eprint/70921/1/FS%202017%2046%20-%20IR.pdf Zainudin, Afiq Azri (2017) Characterization of ionophore–doped graphene–based biocomposite thin film for detection of potassium ion using surface plasmon resonance. Masters thesis, Universiti Putra Malaysia.
institution Universiti Putra Malaysia
building UPM Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Putra Malaysia
content_source UPM Institutional Repository
url_provider http://psasir.upm.edu.my/
language English
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
author Zainudin, Afiq Azri
spellingShingle Zainudin, Afiq Azri
Characterization of ionophore–doped graphene–based biocomposite thin film for detection of potassium ion using surface plasmon resonance
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
publishDate 2017
url http://psasir.upm.edu.my/id/eprint/70921/1/FS%202017%2046%20-%20IR.pdf
http://psasir.upm.edu.my/id/eprint/70921/
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score 13.211869