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Copper nanoparticles mediated by chitosan: synthesis and characterization via chemical methods


Citation

Usman, Muhammad Sani and Ibrahim, Nor Azowa and Shameli, Kamyar and Zainuddin, Norhazlin and Wan Yunus, Wan Md. Zin (2012) Copper nanoparticles mediated by chitosan: synthesis and characterization via chemical methods. Molecules, 17 (12). pp. 14928-14936. ISSN 1420-3049

Abstract

Herein we report a synthesis of copper nanoparticles (Cu-NPs) in chitosan (Cts) media via a chemical reaction method. The nanoparticles were synthesized in an aqueous solution in the presence of Cts as stabilizer and CuSO4·5H2O precursor. The synthesis proceeded with addition of NaOH as pH moderator, ascorbic acid as antioxidant and hydrazine as the reducing agent. The characterization of the prepared NPs was done using ultraviolet-visible spectroscopy, which showed a 593 nm copper band. The Field Emission Scanning Electron Microscope (FESEM) images were also observed, and found to be in agreement with the UV-Vis result, confirming the formation of metallic Cu-NPs. The mean size of the Cu-NPs was estimated to be in the range of 35–75 nm using X-ray diffraction. XRD was also used in analysis of the crystal structure of the NPs. The interaction between the chitosan and the synthesized NPs was studied using Fourier transform infrared (FT-IR) spectroscopy, which showed the capping of the NPs by Cts.


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Additional Metadata

Item Type: Article
Divisions: Faculty of Science
DOI Number: https://doi.org/10.3390/molecules171214928
Publisher: MDPI
Keywords: Chitosan; Copper sulphate; Copper nanoparticle; Chemical reduction method
Depositing User: Nabilah Mustapa
Date Deposited: 03 May 2020 22:32
Last Modified: 03 May 2020 22:32
Altmetrics: http://www.altmetric.com/details.php?domain=psasir.upm.edu.my&doi=10.3390/molecules171214928
URI: http://psasir.upm.edu.my/id/eprint/78037
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