Investigation of Acetone Vapour Sensing Properties of a Ternary Composite of Doped Polyaniline, Reduced Graphene Oxide and Chitosan Using Surface Plasmon Resonance Biosensor
| Autor: | Thomas L. Ferrell, O. Aldaghri, Fabrice Meriaudeau, Fahad Usman, John Ojur Dennis, E.M. Mkawi, Yas Al-Hadeethi, Abdelmoneim Sulieman |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2020 |
| Předmět: |
Materials science
Polymers and Plastics Analytical chemistry surface plasmon resonance sensor 02 engineering and technology Sulfonic acid 01 natural sciences reduced graphene oxide Article law.invention lcsh:QD241-441 chemistry.chemical_compound lcsh:Organic chemistry X-ray photoelectron spectroscopy law doped polyaniline Acetone Fourier transform infrared spectroscopy Surface plasmon resonance acetone vapour detection chemistry.chemical_classification Detection limit diabetes Graphene 010401 analytical chemistry technology industry and agriculture General Chemistry 021001 nanoscience & nanotechnology 0104 chemical sciences chemistry chitosan 0210 nano-technology Ternary operation |
| Zdroj: | Polymers Volume 12 Issue 11 Polymers, Vol 12, Iss 2750, p 2750 (2020) |
| ISSN: | 2073-4360 |
| DOI: | 10.3390/polym12112750 |
| Popis: | 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. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|
| Nepřihlášeným uživatelům se plný text nezobrazuje | K zobrazení výsledku je třeba se přihlásit. |