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http://krishi.icar.gov.in/jspui/handle/123456789/63722
Title: | Time dependent synthesis of gold nanoparticles using chitosan as reducing agent: A spectroscopic approach |
Other Titles: | Not Available |
Authors: | Sreelekshmi, K.R. Mohan, C.O. Remya, S. Rehana Raj Radhika Rajasree Devika Pillai Ashok Kumar, K. Ravishankar, C.N. |
ICAR Data Use Licennce: | http://krishi.icar.gov.in/PDF/ICAR_Data_Use_Licence.pdf |
Author's Affiliated institute: | ICAR::Central Institute of Fisheries Technology Kerala University of Fisheries and Ocean Studies, Panangad, Kochi-682 506, Kerala, India |
Published/ Complete Date: | 2021-04 |
Project Code: | Not Available |
Keywords: | AuNPs Chitosan Gold nanoparticles Molecular weight Rate constant |
Publisher: | Indian Council of Agricultural Research |
Citation: | Sreelakshmi, K. R., Mohan, C. O., Remya, S., Rehana Raj, Radhika Rajasree, Devika Pillai, Ashok Kumar, K. and Ravishankar, C. N. (2021) Time dependent synthesis of gold nanoparticles using chitosan as reducing agent: A spectroscopic approach. Indian J. Fish. 68(2): 112-117. |
Series/Report no.: | Not Available; |
Abstract/Description: | The present study attempted synthesis of gold nanoparticle using chitosan from shrimp waste and evaluated the kinetics of gold nanoparticle (AuNPs) formation. Two different forms of chitosan (high molecular weight and medium molecular weight forms) were used for the preparation of AuNPs. The formation of nanoparticles was studied using UV-VIS spectra obtained at different time intervals during synthesis. The typical UV-VIS spectrum of non-aggregated spherical AuNPs at 520 nm was obtained for both chitosan forms and the maximum absorbance was higher for the sample prepared with medium molecular weight chitosan. The results clearly indicated that the characteristic surface plasmonic resonance (SPR) peak became recognisable at 5 min of heating for the sample with high molecular weight chitosan and 3 min of heating for medium molecular weight chitosan. This indicated that, the lower the molecular weight, the faster the formation of nanoparticles. The wavelength (λ) of absorption maxima was selected and normalised with respect to the absorption maxima at 15 min. The sigmoidal shape of kinetic curve implied the autocatalytic character of AuNP formation. The data from the samples were ftted with two step Finke-Watzky kinetics model and the kinetics constants were derived. The rate constant of the nucleation reaction was found higher for the medium molecular weight chitosan. |
Description: | Not Available |
ISSN: | 0970-6011 |
Type(s) of content: | Research Paper |
Sponsors: | Not Available |
Language: | English |
Name of Journal: | Indian Journal of Fisheires |
Journal Type: | National Journal |
NAAS Rating: | 6.29 |
Impact Factor: | 0.29 |
Volume No.: | 68(2) |
Page Number: | 112-117 |
Name of the Division/Regional Station: | Not Available |
Source, DOI or any other URL: | 10.21077/ijf.2021.68.2.110575-14 |
URI: | http://krishi.icar.gov.in/jspui/handle/123456789/63722 |
Appears in Collections: | FS-CIFT-Publication |
Files in This Item:
File | Description | Size | Format | |
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Time dependent synthesis of gold nanoparticles using chitosan as reducing.pdf | 616.69 kB | Adobe PDF | View/Open |
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