Microwave-assisted synthesis of carbon dots from eggshell membrane ashes by using sodium hydroxide and their usage for degradation of methylene blue

Jusuf, B.N. and Sambudi, N.S. and Isnaeni, I. and Samsuri, S. (2018) Microwave-assisted synthesis of carbon dots from eggshell membrane ashes by using sodium hydroxide and their usage for degradation of methylene blue. Journal of Environmental Chemical Engineering, 6 (6). pp. 7426-7433. ISSN 22133437

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Abstract

Carbon dots (C-dots) is a recent member of carbonaceous nanomaterial with particle size below 10â�nm, equipped with unique fluorescent properties under UV light irradiation. Many methods for the production of C-dots have been reported by introducing carbon-rich waste. In this work, a facile and rapid method was developed to synthesize C-dots from the ashes of eggshell membrane (ESM) in sodium hydroxide solution assisted by one-step microwave irradiation. The optimum time in preparing the C-dots and the highest photoluminescence intensity are achieved for 1min and by using 1molL-1 NaOH, respectively. The resulting C-dots with an average size of 3.88±0.56nm exhibited pH and NaOH solvent-dependent fluorescent behaviour in the visible light range. They are found to be able to degrade methylene blue under sunlight irradiation, with increasing degradation ranging from 26 to 43 for 5ppm to 1ppm concentration of methylene blue. © 2018 Elsevier Ltd.

Item Type: Article
Additional Information: cited By 44
Uncontrolled Keywords: Aromatic compounds; Carbon; Fluorescence; Irradiation; Light; Microwave irradiation; Particle size; pH sensors; Sodium hydroxide, Carbon dots; Eggshell membranes; Fluorescent property; Methylene blue degradations; Microwave assisted synthesis; Photoluminescence intensities; Sodium hydroxide solutions; Sunlight irradiation, Dyes
Depositing User: Mr Ahmad Suhairi UTP
Date Deposited: 09 Nov 2023 16:36
Last Modified: 09 Nov 2023 16:36
URI: https://khub.utp.edu.my/scholars/id/eprint/9536

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