Detection of quinoline using ammonia plasma-functionalised multi-walled carbon nanotubes and application to real samples

Azizul Isha, . and Nor Azah Yusof, . and Faruq Mohammad, . and Mohd Ismahadi Syono, . and Zulaiha Abdul Rahim, . and Nurulhaidah Daud, . and Muhammad Aniq Shazni Mohammad Haniff, . Detection of quinoline using ammonia plasma-functionalised multi-walled carbon nanotubes and application to real samples. pp. 599-609. ISSN 1511-2780

Study on the growth of multi-walled carbon nanotubes (MWCNT) using plasma-enhanced chemical vapour deposition (PECVD) techniques has been carried out in this work. MWCNT screen-printed electrode (SPCE) based on silicon substrate was fabricated for quinoline detection using photolithography methods. The MWCNT working electrodes were modified under ammonia (NH‚) plasma to enhance the surface sensitivity to detect quinoline. The electrocatalytic activity of modified electrode towards oxidation of quinoline was evaluated using cyclic voltammetry (CV) and linear sweep voltammetry (LSV). Under experimental conditions peak currents increased with an increase in the concentration of quinoline (dynamic range 2.0 to 25.0 M) and displayed good linearity (R 0.9958). The limit of detection (LOD) was calculated to be 0.164 M. The modified electrode was then applied to real samples sourced from both healthy and Ganoderma boninense infected oil palm roots crude extracts. A linear plot was obtained with a good linearity (R 0.9879) indicating good sensing results.

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Abstract

Study on the growth of multi-walled carbon nanotubes (MWCNT) using plasma-enhanced chemical vapour deposition (PECVD) techniques has been carried out in this work. MWCNT screen-printed electrode (SPCE) based on silicon substrate was fabricated for quinoline detection using photolithography methods. The MWCNT working electrodes were modified under ammonia (NH‚) plasma to enhance the surface sensitivity to detect quinoline. The electrocatalytic activity of modified electrode towards oxidation of quinoline was evaluated using cyclic voltammetry (CV) and linear sweep voltammetry (LSV). Under experimental conditions peak currents increased with an increase in the concentration of quinoline (dynamic range 2.0 to 25.0 M) and displayed good linearity (R 0.9958). The limit of detection (LOD) was calculated to be 0.164 M. The modified electrode was then applied to real samples sourced from both healthy and Ganoderma boninense infected oil palm roots crude extracts. A linear plot was obtained with a good linearity (R 0.9879) indicating good sensing results.

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Item Type:	Article
AGROVOC Term:	Oil palm
AGROVOC Term:	Quinolines
AGROVOC Term:	Ganoderma
AGROVOC Term:	Electrodes
AGROVOC Term:	Plant health
Depositing User:	Mr. AFANDI ABDUL MALEK
Last Modified:	24 Apr 2025 00:55
URI:	http://webagris.upm.edu.my/id/eprint/9507

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