Green nanotechnology produces nanomaterials and nanoproducts without impairing the environment and living organisms and also provides a way to deal with environmental problems. Green-synthesized nanomaterials from biological systems are a superior biomimetic engineered methodology for the synthesis of nanostructured materials, and are reflected as secure, cost-effective, realistic, and environmentally friendly methodology without toxic ingredients, and renewable inputs. Currently, green nanotechnology is an incredible and interdisciplinary field that has come out as a safe and rapidly emergent research area of many disciplines of research and development. Various kinds of natural biological sources such as plants, phototrophic eukaryotes, namely, algae, microbes, biopolymers, bacteria, actinomycetes, fungi, yeasts, virus, and many biocompatible agents are capable of reducing metal ions to metal nanoparticles. These are also utilized as efficient and environmentally friendly green nanofactories for the production of different metal and metal oxide nanoparticles.The use of green nanomaterial-based technology in various coating industries is a current interest of many researchers. The integration of nanostructured materials in preferred coatings enhances product qualities in terms of chemical and corrosion resistance, antireflection, wear resistance, permeability with state-of-art electrical, mechanical, and surface properties. The green nanotechnology involves coatings including the use of nanoparticles as resource materials, in situ, of nanostructure coatings comprised of nanostructured thin films.Green nanomaterials for application in various coatings, such as anticorrosion coatings, ultraviolet (UV) protective coatings, coatings for making buildings and homes cleaner and stronger, sensors, self-cleaning coatings, depolluting coatings, antifogging coatings, anti-COVID coating, antifouling coatings, antigraffiti coatings, carbon nanotube (CNT)-based coatings, paint coatings, fabric nanocoatings to thwart certain chemical weapons, textile coatings, antibacterial and antifungal coatings, hydrophobic and hydrophilic coatings, are currently commercially available and an immense interest area of research for materials scientists and technologist.This chapter mainly highlights and reviews the fabrication of green nanomaterials in brief with wide-scale state-of-the-art applications of green nanomaterials in coatings for using in various fields such as medical, buildings, energy storage, sensing, agriculture, textiles and allied industrial segments, etc. © 2022 Elsevier Inc. All rights reserved.
Applications of green nanomaterials in coatings