IEEE Sensors Council Hyderabad Chapter presents a Webinar on “Functionalized Carbon Quantum Dots for Water Pollutants Monitoring: Lab to Land”

Functionalized Carbon Quantum Dots for Water Pollutants Monitoring:

Lab to Land

Pooja Devi

Applied Materials and Instrumentation, CSIR-Central Scientific Instruments Organisation, Sector 30 C, Chandigarh-160030, India

Abstract: Carbon quantum dots (CQDs) have emerged out as potential competitor to semiconductor QDs, and are quasi-spherical nanoparticles consisting of amorphous to nano-crystalline cores. The excellent features in terms of high chemical stability, low-cost synthesis, easy scalability, environmental friendliness, broadband optical absorption, low toxicity, strong photoluminescence (PL) emission, and optical properties make them a potential material in photo-catalysis, bio-sensing, drug delivery, chemical sensing, bio imaging and electro-catalysis domain. Herein, we present them as sensitive and selective sensor material for toxic heavy metals & metalloids (Arsenic, Selenium & Chromium) detection in water below WHO guidelines. The surface of as synthesized CQDs is modified with appropriate ligand and assays are established for their application toxic metals/metalloids determination in water. The developed sensor interface is fully characterized in terms of its structural (HR-TEM, XRD, SEM, etc.) and optical (UFS, XPS, PL, UV-Vis, Raman) properties. Besides, the technical parameters have been extracted to design a portable optical system for on-site detection of these pollutants in water, which is the present need.  The in-vitro toxicity study of CQDs is also conducted to understand their toxic effect before environmental application deployment.

Keywords: CQDs, Heavy Metals/Metalloids, Water, Portable Device, Toxicity Study

• Date: 25 Nov 2025
• Time: 06:30 AM EST to 08:00 AM EST