Green nanotechnology is a research field and methodological approach focused on applying the principles of green chemistry and engineering to the design, synthesis, and application of nanomaterials and nanoproducts. It investigates sustainable and environmentally benign methods for creating and utilizing nanoscale materials, aiming to minimize potential environmental and health risks throughout their lifecycle. Key characteristics include reduced waste generation, lower energy consumption, use of renewable resources, minimization or elimination of hazardous substances, and the design of inherently safer nanomaterials. Its significance lies in enabling the development and deployment of nanotechnology in a manner that is environmentally responsible and promotes long-term sustainability.