Growing concerns about resource depletion, pollution, climate change, and waste production have made sustainable and green materials an essential subject of study. Unlike traditional materials, which are often linked to energy-intensive manufacturing, hazardous chemicals, and poor end-of-life management, sustainable materials are designed to reduce environmental burdens while maintaining practical functionality. This narrative review examined literature published predominantly between 2014 and 2026 and evaluated 72 references related to bio-based, waste-derived, recycled, and hybrid materials for environmental applications. Recent studies have reported the development of these materials for water treatment, air pollution control, catalysis, carbon management, climate mitigation, and resource recovery. However, the sustainability of a material should not be assessed solely based on its renewable origin or green synthesis technique. The true environmental value must be evaluated based on functional performance, durability, reusability, scalability, and total environmental benefit. This overview encapsulates recent progress in sustainable and green materials from a function-centric viewpoint, emphasizing essential material classifications, design methodologies, and ecological applications. Emphasis is placed on the interconnections between material supply, structure, characteristics, and practical performance, alongside contemporary concerns of lifecycle impact, regeneration, and real-world applicability. This review presents a comprehensive framework integrating functional performance, life-cycle burden, durability, regeneration and reusability, scalability, and real-world applicability to facilitate the rational design and assessment of sustainable materials for environmental preservation, climate mitigation, and the advancement of the circular economy.




