Development of nanocomposites between graphene, gold nanoparticle and poly (3-4-ethylene dioxythiophene) polystyrene sulfonate and their applications

Name: Chakrit Sriprachuabwong

LCSH: Kasetsart University -- Dissertations. Ph.D. (Nanomaterials Science) 2019

Classification :.LCCS: TA418.9.N35

LCSH: Kasetsart University. -- Department of Materials Science -- Dissertations

LCSH: Nanocomposites (Materials)

LCSH: Graphene

LCSH: Poly(3,4-ethylenedioxythiophene)

LCSH: Poly(styrene sulfonate)

LCSH: Gold Nanoparticles

Abstract: In this thesis, facile and green methods were used to prepare nanocomposites comprises of graphene (GP), gold nanoparticle (AuNP) and poly(3,4-ethylenne dioxythiophene) polystyrene sulfonate (PEDOT:PSS). To prepare GP/PEDOT:PSS nanocomposite, GP was directly peeled off from a graphite rod in a PEDOT:PSS solution by electro-exfoliation. To prepare AuNP/PEDOT:PSS nanocomposite, an a one step polymerization of EDOT using HAuCl4 as an oxidizing agent was performed. To synthesize AuNP/GP/PEDOT:PSS nanocomposite, the electro-exfoliation and insitu polymerization were used. The resulting composites were characterized using various techniques including transmission electron microscope (TEM), scanning electron microscope (SEM), Raman spectroscopy, FTIR spectroscopy and X-ray diffraction (XRD). Afterwards, they were used to modify electrodes and their electrochemical characteristics were demonstrated. GP/PEDOT:PSS and AuNP/PEDOT:PSS aqueous dispersion were inkjet printed on the screen printed carbon electrodes and subsequently functionalize on top with the electrosynthesized MIP layers selective to salbutamol and nitrofurantoin, respectively. The established sensors exhibited exceptional detection limit, wide linear response, good selectivity and stability. Furthermore, AuNP/GP/PEDOT:PSS was also used to modify the glassy carbon electrode and it has revealed that this composite can be used to simultaneously detect dopamine (DA) and uric acid (UA) in the presence of ascorbic acid (AA). Therefore, these nanocomposites have been considered as promising candidate materials for advanced electrochemical bio-sensing applications.

Kasetsart University. Office of the University Library

Address: Bangkok

Email: tdckulib@ku.ac.th

Name: Decha Dechtrirat

Role: Thesis Advisor

Name: Adisorn Tuantranont

Role: Thesis Co-Advisor

Name: Pongthep Prajongtat

Role: Thesis Co-Advisor

Created: 2019

Modified: 2025-06-29

Issued: 2025-06-29

วิทยานิพนธ์/Thesis

application/pdf

URL: https://www.lib.ku.ac.th/KUthesis/2562/chakrit-sri-all.pdf

CallNumber: TA418.9.N35 .C42

eng

DegreeName: Doctor of Philosophy

Level: Doctoral Degree

Descipline: Nanomaterials Science

Grantor: Kasetsart University

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