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Cationically modified nanocrystalline cellulose/carboxyl-functionalized graphene quantum dots nanocomposite thin film: characterization and potential sensing application


Citation

Muhammad Rosddi, Najwa Norimanina and Yap, Wing Fen and Anas, Nur Ain Asyiqin and Sheh Omar, Nur Alia and Md Ramdzan, Nur Syahira and Mohd Daniyal, Wan Mohd Ebtisyam Mustaqim (2020) Cationically modified nanocrystalline cellulose/carboxyl-functionalized graphene quantum dots nanocomposite thin film: characterization and potential sensing application. Crystals, 10 (10). art. no. 875. pp. 1-12. ISSN 2073-4352

Abstract

In this study, highly functional cationically modified nanocrystalline cellulose (NCC)/carboxyl-functionalized graphene quantum dots (CGQD) has been described. The surface of NCC was first modified with hexadecyltrimethylammonium bromide (CTA) before combining with CGQD. The CGQD, CTA-NCC and CTA-NCC/CGQD nanocomposites thin films were prepared using spin coating technique. The obtained nanocomposite thin films were then characterized by using the Fourier transform infrared spectroscopy (FTIR) which confirmed the existence of hydroxyl groups, carboxyl groups and alkyl groups in CTA-NCC/CGQD. The optical properties of the thin films were characterized using UV–Vis spectroscopy. The absorption of CTA-NCC/CGQD was high with an optical band gap of 4.127 eV. On the other hand, the CTA-NCC/CGQD nanocomposite thin film showed positive responses towards glucose solution of different concentration using an optical method based on surface pla.smon resonance phenomenon. This work suggests that the novel nanocomposite thin film has potential for a sensing application in glucose detection


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Official URL or Download Paper: https://www.mdpi.com/2073-4352/10/10/875

Additional Metadata

Item Type: Article
Divisions: Faculty of Science
Institute of Advanced Technology
Centre of Foundation Studies for Agricultural Science
DOI Number: https://doi.org/10.3390/cryst10100875
Publisher: Multidisciplinary Digital Publishing Institute
Keywords: Nanocrystalline cellulose; Graphene quantum dots; Thin film; Otical; Sensing; Glucose; Surface plasmon resonance
Depositing User: Ms. Nuraida Ibrahim
Date Deposited: 18 May 2022 06:57
Last Modified: 18 May 2022 06:57
Altmetrics: http://www.altmetric.com/details.php?domain=psasir.upm.edu.my&doi=10.3390/cryst10100875
URI: http://psasir.upm.edu.my/id/eprint/88098
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