This book highlights a multidisciplinary system for the future while protecting our environment. Certainly, the main objective of the proposed book has addressed several issues and bringing a good platform to understanding for future developments in metal oxide nanostructures for energy conversion, biomedical, and environmental management, however, which is support/carrier for antibacterial behaviors, pathogen infections, and bioinspired materials for energy savings and environmental impacts. Appropriately, I recommend the book to undergraduates, postgraduates, and doctoral students those who are working in materials science and researchers across the world working in interdisciplinary research.