There is a growing interest in applying the UN’s sustainable development goals to a variety of sectors. One can use certain principles of green chemistry in the emerging fields of nanoscience and nanotechnology. The green chemistry approach focuses on the creation of nanodimensional materials that have a low environmental impact, are cost-effective, and have no negative consequences on the environment. This book aims to summarise the different alternative green chemical routes. Furthermore, the book describes the use of nano-dimensional materials for sustainable energy generation and environmental remediation applications. © 2025 Sathish-Kumar Kamaraj, Arun Thirumurugan, Shanmuga Sundar Dhanabalan, Suresh K. Verma and Shanavas Shajahan.