Detection of Quinoline in G. boninense-Infected Plants Using Functionalized Multi-Walled Carbon Nanotubes: A Field Study

Autor: Jaafar Abdullah, Nor Azah Yusof, Fowotade Sulayman Akanbi, Roozbeh Hushiarian, Yusran Sulaiman
Jazyk: angličtina
Rok vydání: 2017
Předmět:
Materials science
Metal Nanoparticles
electrochemical sensor
Nanotechnology
Biosensing Techniques
02 engineering and technology
Carbon nanotube
lcsh:Chemical technology
01 natural sciences
Biochemistry
Article
Analytical Chemistry
law.invention
chemistry.chemical_compound
law
quinoline
Spectroscopy
Fourier Transform Infrared
lcsh:TP1-1185
Electrical and Electronic Engineering
Electrodes
Instrumentation
screen-printed carbon electrode
Uncategorized
Nanocomposite
Nanotubes
Carbon
multi-walled carbon nanotubes
Ganoderma boninense
010401 analytical chemistry
Quinoline
Electrochemical Techniques
021001 nanoscience & nanotechnology
Atomic and Molecular Physics
and Optics
0104 chemical sciences
Electrochemical gas sensor
Field emission microscopy
chemistry
Chemical engineering
Electrode
Linear sweep voltammetry
Quinolines
Gold
Cyclic voltammetry
0210 nano-technology
Zdroj: Sensors; Volume 17; Issue 7; Pages: 1538
Sensors, Vol 17, Iss 7, p 1538 (2017)
Sensors (Basel, Switzerland)
ISSN: 1424-8220
DOI: 10.3390/s17071538
Popis: Carbon nanotubes (CNTs) reinforced with gold nanoparticles (AuNPs) and chitosan nanoparticles (CTSNPs) were anchored on a screen-printed electrode to fabricate a multi-walled structure for the detection of quinoline. The surface morphology of the nanocomposites and the modified electrode was examined by an ultra-high resolution field emission scanning electron microscope (FESEM), and Fourier-transform infrared (FT-IR) spectroscopy was used to confirm the presence of specific functional groups on the multi-walled carbon nanotubes MWCNTs. Cyclic voltammetry (CV) and linear sweep voltammetry (LSV) were used to monitor the layer-by-layer assembly of ultra-thin films of nanocomposites on the surface of the electrode and other electrochemical characterizations. Under optimized conditions, the novel sensor displayed outstanding electrochemical reactivity towards the electro-oxidation of quinoline. The linear range was fixed between 0.0004 and 1.0 μM, with a limit of detection (LOD) of 3.75 nM. The fabricated electrode exhibited high stability with excellent sensitivity and selectivity, specifically attributable to the salient characteristics of AuNPs, CTSNPs, and MWCNTs and the synergistic inter-relationship between them. The newly developed electrode was tested in the field. The Ipa increased with an increase in the amount of quinoline solution added, and the peak potential deviated minimally, depicting the real capability of the newly fabricated electrode.
Databáze: OpenAIRE
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