UPM Institutional Repository

Polymeric carbon quantum dots as efficient chlorophyll sensor-analysis based on experimental and computational investigation


Citation

Nazri, Nur Afifah Ahmad and Azeman, Nur Hidayah and Bakar, Mohd Hafiz Abu and Mobarak, Nadhratun Naiim and Masran, Athiyah Sakinah and Zain, Ahmad Rifqi Md and Mahdi, Mohd Adzir and Saputro, Adhitya Gandaryus and Wung, Triati Dewi Kencana and Luo, Yunhan and A. Bakar, Ahmad Ashrif (2024) Polymeric carbon quantum dots as efficient chlorophyll sensor-analysis based on experimental and computational investigation. Optics and Laser Technology, 170. pp. 1-11. ISSN 0030-3992

Abstract

This report introduces a microfiber chlorophyll sensor based on polymeric amine functionalized carbon quantum dots (NCQD) using the surface plasmon resonance technique. The silver (Ag) thin film, followed by NCQD-polyvinyl alcohol composite film, was deposited on the tapered optical fiber. The characterization of surface morphologies of NCQD-PVA film using a field emission scanning electron microscope shows that the contact area with the analyte was well covered with Ag and NCQD-PVA. The experimental results show that the fiber optic SPR sensor can detect chlorophyll in the 0.01–2.0 ppm range with a high sensitivity response and a detection limit of 1.90 nm ppm−1 and 0.78 ppm, respectively. This study observed no significant interference among the other ionic species (Fe3+, NH4+, NO3–, NO2–, and PO4-) due to the electrostatic and π-π interactions between NCQD and chlorophyll. Results from density functional theory calculation also confirm that the interaction of the NCQD with chlorophyll existed, and the strongest interaction occurs between nitrogen at pyridine sites of the carbon core and the oxygen group of chlorophyll. The proposed NCQD/PVA optical fiber sensor exhibits good sensing performance and correlates well with the standard method (R2 = 0.9501), suggesting a suitable technology candidate for real-time environmental monitoring applications.


Download File

Full text not available from this repository.

Additional Metadata

Item Type: Article
Divisions: Universiti Putra Malaysia
DOI Number: https://doi.org/10.37934/araset.34.1.1523
Publisher: Elsevier
Keywords: Carbon quantum dots; Chlorophyll; Density functional theory; Optical sensor; Surface plasmon resonance
Depositing User: Mohamad Jefri Mohamed Fauzi
Date Deposited: 02 Feb 2024 07:12
Last Modified: 02 Feb 2024 07:12
Altmetrics: http://www.altmetric.com/details.php?domain=psasir.upm.edu.my&doi=10.37934/araset.34.1.1523
URI: http://psasir.upm.edu.my/id/eprint/105603
Statistic Details: View Download Statistic

Actions (login required)

View Item View Item