Dr. Malik received B.Sc. (2008) Science from the University of Kashmir, Srinagar, J&K; M.Sc. (2010) in Zoology from Barkatullah University, Bhopal, Madhya Pradesh; and PhD (2015) in Zoology from the same university. He completed his B.Ed program in 2017 from the University of Kashmir, Srinagar, J&K. He started his career as Lecturer in School Education Department, Govt. of J&K for 2 years. Dr. Malik is now working as a Lecturer in Department of Zoology, Govt. Degree College, Bijbehara, Kashmir (J&K) and actively involved in teaching and research activities. He has more than 8 years of research experience. His areas of interest are ecology, soil macrofauna, wildlife biology, conservation biology etc. Dr. Malik has published more than 20 research papers in various national and international peer-reviewed journals. He has published 24 books, 36 book chapters and more than 10 popular editorial articles with various publishers like Springer Nature, Elsevier Inc., Taylorand Francis Group and IGI Global. Dr. Malik is acting as the Editor-in-Chief of Inventum Biologicum (An International Journal of Biological Research) published by World Biologica, India. He is also serving as editor and reviewer of several journals with a reasonable repute. He has participated in several State, National, and International conferences, seminars, workshops, and symposia and more than 20 conference papers are to his credit. He is the life member of SBBS (Society for Bioinformatics and Biological Sciences) with membership id LMJ-243.Readers may contact him at editor@worldbiologica.com, or malik.junaidahmad@gmail.com Dr. Mohamed Jaffer Sadiq Mohamed, PhD, is working as a Postdoctoral Researcher in the King Fahd University of Petroleum and Minerals, Dhahran, Saudi Arabia. Dr. Sadiq received BSc (2006) in Chemistry from Bharathiyar University, Coimbatore, Tamil Nadu; MSc (2008) in Applied Chemistry from National Institute ofTechnology (NIT), Tiruchirappalli, Tamil Nadu; MTech (2014) in Nanotechnology from Karunya University, Coimbatore, Tamil Nadu; and PhD (2017) in Chemistry from National Institute of Technology Karnataka (NITK), Surathkal, Mangalore, Karnataka. He started his career as Chemist in Hindustan Zinc Limited, Rajasthan, for four years. He worked as a Postdoctoral Researcher in the Yunnan University, Kunming, China for two years. Dr. Sadiq is now working as a Postdoctoral Researcher in the King Fahd University of Petroleum and Minerals, Dhahran, Saudi Arabia, and is actively involved in teaching and research activities. He has more than 10 years of industrial and research experience. His areas of interest are Nanomaterials/Nanocomposites/Nanocrystals/Perovskites based photocatalysis, water splitting, fenton’s like catalysts, electrocatalysis (HER, OER, ORR), heterogeneous catalysis, supercapacitors, fuel cell catalysis, and solar cells. He has authored 2 book chapters, edited 2 books, published 30 research articles and technical papers in international peer-reviewed journals like Springer, Elsevier, RSC, ACS, etc. He is also serving as editor and reviewer of several journals with a reasonable reputation. He has participated in several State, National, and International Conferences, seminars, workshops, and symposia, and more than 20 conference papers are to his credit.Readers may contact him at: sadiqmsc@gmail.com

• Part1. Nanotechnology and Sustainability: Introduction and Fundamental Aspects.- Chapter1. Nanotechnology and Sustainability: Toxicological Assessments and Environmental Risks.- Chapter2. Microbial Nanotechnology: Current Development and Potential Applications in the Field of Biotechnology.- Chapter3. Green Functional Nanomaterials: Synthesis and Application.- Chapter4. Green Functional Nanomaterials: Synthesis and Applications (Plant & Bacteria Mediated Synthesis).- Chapter5. Green Synthesis of Nanoparticles Using Plant and Biological Organisms and their Biomedical Applications.- Chapter6. An Insight into the Plants and Bacteria Mediated Green Synthesis of Nanomaterials and their Potential Applications.- Chapter7. Exploration on Green Synthesis of Nanoparticles from Plants and Microorganisms and their Biological Applications.- Chapter8. Plant-based Synthesis of Gold and Silver Nanoparticles and Their Applications: A Review.- Chapter9. Nanotechnology in Cancer Chemoprevention: In Vivo and In Vitro Studies and Advancement in Biological Sciences.- Chapter10. Nanotechnology: A Next-Gen Tool for Sustainable Aquaculture.- Part2. Nanotechnology for Energy Conversion and Storage.- Chapter11. Nanotechnology in Renewable Energy Conversion and Storage Process.- Chapter12. Application of Nanotechnology in Bioenergy Production from Algae and Cyanobacteria.- Chapter13. Graphene Based Nanomaterials for Supercapacitor Applications: A Critical Review.- Chapter14. Nanocomposite Materials for Dye-Sensitized Solar Cells.- Chapter15. Thermophysical Characteristics of Nanofluids: A Review.- Part3. Environmental Impacts of Nanotechnology.- Chapter16. Nanomaterials in Aquatic Environments: Impact and Risk Assessment.- Chapter17. Nanoparticles in Aquatic Environment: An Overview with Special Reference to their Ecotoxicity.- Chapter18. Eco-friendly Sustainable Nanocomposite Food Packaging Materials: Recent Advancements, Challenges and Way Forward.- Chapter19. Nanotechnology at Workplace:Risks, Ethics, Precautions and Regulatory Considerations.- Chapter20. Nanotechnology: Ethical Impacts, Health Issues, and Safety Issues.