Fluorescent Carbon Dots via a Green Synthesis Approach

Carbon Dots (CDs) are best alternative to heavy metal-based quantum dots and fluorescent dyes. The horizon of green carbon dots is developing swiftly, but it faces several challenges like ensuring the durability of their properties. Herein, we discuss the green synthesis of carbon dots from papaya extract using hydrothermal method. The physical, chemical and optical properties of the synthesised CDs is critically analysed using several methods like UV spectroscopy, photoluminescence, high resolution transmission electron microscopy and Fourier transform infrared spectroscopy. The development of cost effective stable and sustainable green CDs with tuneable properties has a wide range of applications include physics, chemistry, biology, nanotechnology, energy and other interdisciplinary areas.