Nanotechnology is regarded as a vital technology of the twenty-first century, and it has sparked widespread interest. Green nanotechnology is a subset of green technology that combines green chemistry and green engineering, with the latter referring to the usage of plant-based materials. It uses less material and renewable inputs whenever possible, reducing energy and fuel use. Furthermore, nanotechnological products, processes, and applications are predicted to provide major contributions to environmental and climate protection by conserving raw materials, energy, and water, as well as lowering greenhouse gas emissions and hazardous waste. The key advantages of green nanotechnology are increased energy efficiency, less waste and greenhouse gas emissions, and reduced consumption of non-renewable raw resources.