eprintid: 12520
rev_number: 2
eprint_status: archive
userid: 1
dir: disk0/00/01/25/20
datestamp: 2023-11-10 03:27:04
lastmod: 2023-11-10 03:27:04
status_changed: 2023-11-10 01:48:55
type: article
metadata_visibility: show
creators_name: Usman, F.
creators_name: Dennis, J.O.
creators_name: Mkawi, E.M.
creators_name: Al-Hadeethi, Y.
creators_name: Meriaudeau, F.
creators_name: Ferrell, T.L.
creators_name: Aldaghri, O.
creators_name: Sulieman, A.
title: Investigation of acetone vapour sensing properties of a ternary composite of doped polyaniline, reduced graphene oxide and chitosan using surface plasmon resonance biosensor
ispublished: pub
keywords: Acetone; Chitosan; Composite films; Composite structures; Diagnosis; Gold coatings; Gold metallography; Graphene; Morphology; Plasmons; Polyaniline; Reduced Graphene Oxide; Volatile organic compounds, Chemical compositions; Correlation coefficient; Non-invasive monitoring; Ptoluenesulfonic acid; Reduced graphene oxides (RGO); Surface plasmon resonance biosensor; Surface plasmon resonance sensor; Vapour concentrations, Surface plasmon resonance
note: cited By 5
abstract: This work reports the use of a ternary composite that integrates p-Toluene sulfonic acid doped polyaniline (PANI), chitosan, and reduced graphene oxide (RGO) as the active sensing layer of a surface plasmon resonance (SPR) sensor. The SPR sensor is intended for application in the non-invasive monitoring and screening of diabetes through the detection of low concentrations of acetone vapour of less than or equal to 5 ppm, which falls within the range of breath acetone concentration in diabetic patients. The ternary composite film was spin-coated on a 50-nm-thick gold layer at 6000 rpm for 30 s. The structure, morphology and chemical composition of the ternary composite samples were characterized by FTIR, UV-VIS, FESEM, EDX, AFM, XPS, and TGA and the response to acetone vapour at different concentrations in the range of 0.5 ppm to 5 ppm was measured at room temperature using SPR technique. The ternary composite-based SPR sensor showed good sensitivity and linearity towards acetone vapour in the range considered. It was determined that the sensor could detect acetone vapour down to 0.88 ppb with a sensitivity of 0.69 degree/ppm with a linearity correlation coefficient of 0.997 in the average SPR angular shift as a function of the acetone vapour concentration in air. The selectivity, repeatability, reversibility, and stability of the sensor were also studied. The acetone response was 87, 94, and 99 higher compared to common interfering volatile organic compounds such as propanol, methanol, and ethanol, respectively. The attained lowest detection limit (LOD) of 0.88 ppb confirms the potential for the utilisation of the sensor in the non-invasive monitoring and screening of diabetes. © 2020 by the authors. Licensee MDPI, Basel, Switzerland.
date: 2020
publisher: MDPI AG
official_url: https://www.scopus.com/inward/record.uri?eid=2-s2.0-85096415941&doi=10.3390%2fpolym12112750&partnerID=40&md5=1cd3b5be886af937e3277c1c1ccccc61
id_number: 10.3390/polym12112750
full_text_status: none
publication: Polymers
volume: 12
number: 11
pagerange: 1-15
refereed: TRUE
issn: 20734360
citation:   Usman, F. and Dennis, J.O. and Mkawi, E.M. and Al-Hadeethi, Y. and Meriaudeau, F. and Ferrell, T.L. and Aldaghri, O. and Sulieman, A.  (2020) Investigation of acetone vapour sensing properties of a ternary composite of doped polyaniline, reduced graphene oxide and chitosan using surface plasmon resonance biosensor.  Polymers, 12 (11).  pp. 1-15.  ISSN 20734360