An Insight Into Unveiling Nano Luminescence for Industrial Dye Detection

Area of Science:

• Environmental Science
• Materials Science
• Nanotechnology

Background:

• Dyes from industries like textiles pose significant environmental and health risks.
• Semiconductor nanoparticles, especially Carbon Quantum Dots (CQDs), are promising photocatalysts for dye detection due to their cost-effectiveness and eco-friendliness.
• CQDs possess unique optical and electrical properties ideal for sensing applications.

Purpose of the Study:

• To develop a novel, efficient microwave-assisted synthesis for Carbon Quantum Dots (CQDs).
• To characterize the synthesized CQDs and evaluate their performance in detecting specific dyes.
• To explore the potential of CQDs in environmental remediation and water pollution control.

Main Methods:

• Microwave-assisted synthesis of CQDs under ambient conditions.
• Characterization using Scanning Electron Microscopy (SEM), X-ray Diffraction (XRD), Fourier-Transform Infrared Spectroscopy (FTIR), UV-Vis spectrophotometry, and photoluminescence.
• Detection limit determination for cresol red and cresol purple dyes.

Main Results:

• Successful synthesis of uniform CQDs with excellent optical properties via a fast, scalable, and passivation-free microwave method.
• Characterization confirmed the CQDs' structural and optical attributes.
• Achieved low detection limits (0.413 ppm for cresol red, 0.847 ppm for cresol purple) with high sensitivity and selectivity across a wide pH range.

Conclusions:

• The developed microwave-assisted synthesis offers a sustainable and cost-effective route for CQD production.
• The synthesized CQDs demonstrate high efficacy for sensitive and selective dye detection in wastewater.
• This research highlights the potential of CQDs as a viable solution for environmental restoration and mitigating water pollution.