Nitrogen-doped carbon dots derived from green algae and ammonia as photocatalyst material

Hastuti, Erna ORCID: https://orcid.org/0000-0002-2521-9258, Mutiara, Z., Hikmah, Utiya and Kurniati, T. (2024) Nitrogen-doped carbon dots derived from green algae and ammonia as photocatalyst material. Jurnal Sains Materi Indonesia, 25 (2). pp. 115-121. ISSN 4111098 (print); 2614087X (online)

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Abstract

Carbon dots are a novel carbon-based material with the appealing properties of inexpensive nanomaterials, low toxicity, environmental tolerance, abundance, photostability, and simplicity of synthesis. Carbon dots (CDs) have effectively distinguished themselves from other materials due to their superior properties, such as ultra-small size, good photostability, excellent biocompatibility, and tunable fluorescence properties. This study synthesized carbon dots from green algae and ammonia solution as the nitrogen dopant precursor using a hydrothermal method at 180°C. Green algae contain carbohydrates, proteins, and poly-unsaturated fatty acids, allowing them to produce more carbon and be used as a precursor in synthesizing carbon dots. The Fourier transform infrared (FTIR) and ultraviolet-visible (UV-vis) spectra reveal the distinct functionalization and energy gap between the surface states of CDs and nitrogen-doped carbon dots (N-CDs). The carbon nanoparticles were then used as photocatalysts to degrade methyl red. The results indicate that nitrogen doping is superior for reducing methyl red and has tremendous potential for environmental applications.

Item Type:	Journal Article
Keywords:	carbon dots; green algae; nitrogen
Subjects:	09 ENGINEERING > 0912 Materials Engineering > 091208 Organic Semiconductors
Divisions:	Faculty of Mathematics and Sciences > Department of Physics
Depositing User:	Erna Erna Hastuti
Date Deposited:	30 May 2024 11:12

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