Fluorescence Quenching of Graphene Quantum Dots from Orange Peel for Methyl Orange Detection

Nanomaterials, Journal Year: 2025, Volume and Issue: 15(5), P. 376 - 376

Published: Feb. 28, 2025

Methyl orange (MO) is an organic synthetic dye widely used in laboratory and industrial applications. In settings, it serves as acid-base indicator due to its distinct color change both acidic alkaline environments. Industrially, primarily utilized the textile industry for ultraviolet (UV) absorption properties. However, discharge leakage of methyl into environment can cause severe ecological damage pose potential carcinogenic teratogenic risks human health. Therefore, detecting quantifying concentration various matrices crucial. This study reports synthesis graphene quantum dots (GQDs) from peel a precursor, using ethanol dimethylformamide (DMF) solvents. Cyan (c-GQDs) yellow (y-GQDs) were synthesized through bottom-up hydrothermal method. The difference attributed redshift caused by varying ratio pyridine nitrogen pyrrole nitrogen. These GQDs exhibited notable optical properties, with c-GQDs emitting cyan fluorescence y-GQDs under UV light. To investigate quenching effects, nine commonly dyes tested, all found quench y-GQDs, having most significant effect. peel-derived presence poor dispersion DMF solution. Additionally, possess high specific surface area, abundant functional groups, excellent electronic conductivity, which contribute their effective performance. average thickness (the vertical dimension substrate upwards) was 3.51 nm, confirming graphene-like structure. They emitted within wavelength range 450-530 nm. Notably, linear correlation between intensity (regression coefficient = 0.9954), indicating sensing materials pollutant detection.

Language: Английский

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Comprehensive Investigation of Prunus armeniaca for Natural Green Synthesis of Carbon Quantum Dots; Applications as Fluorescent Nano-probes for Ramipril

Talanta, Journal Year: 2025, Volume and Issue: unknown, P. 128014 - 128014

Published: March 1, 2025

Language: Английский

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Recent development of biomass derived carbon dots in fluorescent sensing applications

Bioresource Technology Reports, Journal Year: 2025, Volume and Issue: unknown, P. 102137 - 102137

Published: May 1, 2025

Language: Английский

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A novel triaminopyridine fluorescent probe based on AIE effect with high selectivity under solvent shielding effect

Microchemical Journal, Journal Year: 2024, Volume and Issue: 201, P. 110534 - 110534

Published: April 12, 2024

Language: Английский

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