Singh, Vikram (2022) Green, economical synthesis of nitrogen enriched carbon nanoparticles from seaweed extract and their application as invisible ink and fluorescent film. Materials Letters, 309.

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Abstract

In this article, we synthesized fluorescent nitrogen-enriched carbon nanoparticles (N-CNPs), which were pre-pared via the hydrothermal treatment of pyrolyzed seaweed extract and ethylene diamine at 160 ◦C for 12.0 h. These N-CNPs demonstrated a 12 nm average diameter with carbonyl, hydroxyl, and imine functionality on their surface. The zeta potential value was found to be negative which further conrms the presence of acid/imine groups on the surface of N-CNPs. The prepared N-CNPs showed strong blue fluorescence with 24% quantum yield under UV light illumination. Here, we introduced metal-free water dispersed N-CNPs as invisible ink for security purposes. The information was written by the N-CNPs in TLC plate and N-CNPs/PVA flexible composite film is invisible in daylight and can be readable in UV light illumination.

Item Type:	Article
Uncontrolled Keywords:	Seaweed extract Hydrothermal treatment N-enriched Fluorescent carbon nanoparticles Invisible ink Flexible film
Subjects:	Envieronmental Management Group
Divisions:	UNSPECIFIED
Depositing User:	Mr. B. R. Panduranga
Date Deposited:	23 Dec 2021 05:21
Last Modified:	23 Dec 2021 05:21
URI:	http://cimfr.csircentral.net/id/eprint/2473

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