Issue 1, 2024

Nitrogen-doped carbon quantum dots from biomass as a FRET-based sensing platform for the selective detection of H2O2 and aspartic acid

Abstract

Hydrogen peroxide (H2O2) with strong oxidizing properties and a volatile nature has a potential role in biological systems and industrial applications. Developing an optical “on–off–on” probe for the efficient detection of H2O2 is crucial for health, environmental safety, and diagnostic applications. Herein, sustainable N-doped carbon quantum dots (N-CQDs) were explored as optical probes for the selective discrimination of H2O2 and aspartic acid in aqueous media based on simple photoluminescence “turn on” and “turn off” mechanisms. N-CQDs were synthesized from Moringa oleifera (drumstick leaves) used as both a carbon and nitrogen source. The synergistic effect of N-doping, oxygenous surface functional groups and structural advantages lead to high selectivity and good sensing performance with a LOD value of 26.4 mM and 134.2 nM for H2O2 and aspartic acid, respectively. The simple synthesis process and structural advantage of N-CQDs showed the potential for the detection of reactive oxygen species and biomolecules with high sensitivity and selectivity in an aqueous medium for diagnostic applications and human health monitoring.

Graphical abstract: Nitrogen-doped carbon quantum dots from biomass as a FRET-based sensing platform for the selective detection of H2O2 and aspartic acid

Supplementary files

Article information

Article type
Paper
Submitted
25 Sep 2023
Accepted
10 Nov 2023
First published
13 Nov 2023
This article is Open Access
Creative Commons BY-NC license

RSC Sustain., 2024,2, 223-232

Nitrogen-doped carbon quantum dots from biomass as a FRET-based sensing platform for the selective detection of H2O2 and aspartic acid

K. S. Raju, G. S. Das and K. M. Tripathi, RSC Sustain., 2024, 2, 223 DOI: 10.1039/D3SU00343D

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