Dr. S. Shankar Subramanian is an Assistant Professor in the Department of Physics, University of Delhi, India. He is project investigator of one major research project funded by the Council of Scientific and Industrial Research (CSIR) and co-investigator of two completed research projects funded by University of Delhi. His research areas include multiferroics, magnetoelectrics, composites, and energy storage studies.Dr. Gaurav Sharma is an Associate Professor in the Department of Applied Physics at Amity University, India. His research primarily focuses on the synthesis and optical properties of materials, as well as high-temperature and high-pressure studies.Prof. Bahadur has served as a postdoctoral fellow/visiting scientist at several institutions before joining the Department of Chemistry, North-West University, South Africa, in 2015. He is currently working as a full-time professor in the discipline of physical chemistry. With more than 15 years of teaching and research experience, his multidisciplinary research interests include ionic liquids, DESs, phase equilibria, thermodynamics, corrosion science, biofuels, biomass, and cellulose. He serves on the editorial advisory boards of several national and international journals and has published more than 200 articles in reputed high–impact factor journals, including book chapters and books, with more than 12,300 citations. He is also a member of numerous scientific societies, including IUPAC, ACS, FRSC, SACI, ITS, etc.Dr. Prashant Singh is currently a professor in the Department of Chemistry, Atma Ram Sanatan Dharam College, University of Delhi, India, and a fellow of the Royal Society of Chemistry, UK. He has nearly 20 years of teaching experience and has completed four research projects from different funding agencies in India. He has published more than 190 research articles/reviews/preprints/chapters, with nearly 4300 citations. His research interests include DFT calculations, molecular dynamics simulations, and electrochemistry to understand the behaviour of small molecules, both with and without macromolecules. He serves on the editorial boards of Scientific Reports, PLOS One, Mitochondrial DNA Part B and has edited special issue in Nanoscience & Nanotechnology-Asia, Molecules, ChemistrySelect. Additionally, he has edited books published by Elsevier, CRC Press, and other publishers.

• Section 1: Fundamentals, Synthesis and Characterization1. Introduction to Sustainable Nanotechnology2. Biosynthesis of ZnO nanostructures3. Bulk synthesis of ZnO nanostructures4. Plant-mediated Synthesis and their characterization5. Microbial-mediated Synthesis and their characterization6. Enzyme-assisted Synthesis and their characterization7. A comparative study for the synthesis of ZnO nanosctructuresSection 2: Applications of ZnO Nanostructures8. ZnO nanostructures in electrical energy harvesting9. ZnO nanostructures in photovoltaic devices10. ZnO nanostructures in photocatalysis of dyes11. Sensing ability of ZnO nanostructures12. ZnO nanostructures for Environmental Remediation13. ZnO nanostructures in EMI shielding14. ZnO nanostructures in biological applications15. ZnO nanostructures in Healthcare (wound healing, skin care and bioimaging)Section 3: Toxicity, Challenges and Future Prospects16. Toxicity of ZnO nanostructures to aquatic life17. Impact of ZnO nanostructures on bacteria and fungi18. Challenges in Synthesis of ZnO nanostructures19. Future Prospects and Emerging Trends

Dr. S. Shankar Subramanian is an Assistant Professor in the Department of Physics, University of Delhi, India. He is project investigator of one major research project funded by the Council of Scientific and Industrial Research (CSIR) and co-investigator of two completed research projects funded by University of Delhi. His research areas include multiferroics, magnetoelectrics, composites, and energy storage studies.Dr. Gaurav Sharma is an Associate Professor in the Department of Applied Physics at Amity University, India. His research primarily focuses on the synthesis and optical properties of materials, as well as high-temperature and high-pressure studies.Prof. Bahadur has served as a postdoctoral fellow/visiting scientist at several institutions before joining the Department of Chemistry, North-West University, South Africa, in 2015. He is currently working as a full-time professor in the discipline of physical chemistry. With more than 15 years of teaching and research experience, his multidisciplinary research interests include ionic liquids, DESs, phase equilibria, thermodynamics, corrosion science, biofuels, biomass, and cellulose. He serves on the editorial advisory boards of several national and international journals and has published more than 200 articles in reputed high–impact factor journals, including book chapters and books, with more than 12,300 citations. He is also a member of numerous scientific societies, including IUPAC, ACS, FRSC, SACI, ITS, etc.Dr. Prashant Singh is currently a professor in the Department of Chemistry, Atma Ram Sanatan Dharam College, University of Delhi, India, and a fellow of the Royal Society of Chemistry, UK. He has nearly 20 years of teaching experience and has completed four research projects from different funding agencies in India. He has published more than 190 research articles/reviews/preprints/chapters, with nearly 4300 citations. His research interests include DFT calculations, molecular dynamics simulations, and electrochemistry to understand the behaviour of small molecules, both with and without macromolecules. He serves on the editorial boards of Scientific Reports, PLOS One, Mitochondrial DNA Part B and has edited special issue in Nanoscience & Nanotechnology-Asia, Molecules, ChemistrySelect. Additionally, he has edited books published by Elsevier, CRC Press, and other publishers.

• Section 1: Fundamentals, Synthesis and Characterization1. Introduction to Sustainable Nanotechnology2. Biosynthesis of ZnO nanostructures3. Bulk synthesis of ZnO nanostructures4. Plant-mediated Synthesis and their characterization5. Microbial-mediated Synthesis and their characterization6. Enzyme-assisted Synthesis and their characterization7. A comparative study for the synthesis of ZnO nanosctructuresSection 2: Applications of ZnO Nanostructures8. ZnO nanostructures in electrical energy harvesting9. ZnO nanostructures in photovoltaic devices10. ZnO nanostructures in photocatalysis of dyes11. Sensing ability of ZnO nanostructures12. ZnO nanostructures for Environmental Remediation13. ZnO nanostructures in EMI shielding14. ZnO nanostructures in biological applications15. ZnO nanostructures in Healthcare (wound healing, skin care and bioimaging)Section 3: Toxicity, Challenges and Future Prospects16. Toxicity of ZnO nanostructures to aquatic life17. Impact of ZnO nanostructures on bacteria and fungi18. Challenges in Synthesis of ZnO nanostructures19. Future Prospects and Emerging Trends

Dr. S. Shankar Subramanian is an Assistant Professor in the Department of Physics, University of Delhi, India. He is project investigator of one major research project funded by the Council of Scientific and Industrial Research (CSIR) and co-investigator of two completed research projects funded by University of Delhi. His research areas include multiferroics, magnetoelectrics, composites, and energy storage studies.Dr. Gaurav Sharma is an Associate Professor in the Department of Applied Physics at Amity University, India. His research primarily focuses on the synthesis and optical properties of materials, as well as high-temperature and high-pressure studies.Prof. Bahadur has served as a postdoctoral fellow/visiting scientist at several institutions before joining the Department of Chemistry, North-West University, South Africa, in 2015. He is currently working as a full-time professor in the discipline of physical chemistry. With more than 15 years of teaching and research experience, his multidisciplinary research interests include ionic liquids, DESs, phase equilibria, thermodynamics, corrosion science, biofuels, biomass, and cellulose. He serves on the editorial advisory boards of several national and international journals and has published more than 200 articles in reputed high–impact factor journals, including book chapters and books, with more than 12,300 citations. He is also a member of numerous scientific societies, including IUPAC, ACS, FRSC, SACI, ITS, etc.Dr. Prashant Singh is currently a professor in the Department of Chemistry, Atma Ram Sanatan Dharam College, University of Delhi, India, and a fellow of the Royal Society of Chemistry, UK. He has nearly 20 years of teaching experience and has completed four research projects from different funding agencies in India. He has published more than 190 research articles/reviews/preprints/chapters, with nearly 4300 citations. His research interests include DFT calculations, molecular dynamics simulations, and electrochemistry to understand the behaviour of small molecules, both with and without macromolecules. He serves on the editorial boards of Scientific Reports, PLOS One, Mitochondrial DNA Part B and has edited special issue in Nanoscience & Nanotechnology-Asia, Molecules, ChemistrySelect. Additionally, he has edited books published by Elsevier, CRC Press, and other publishers.

• Section 1: Fundamentals, Synthesis and Characterization1. Introduction to Sustainable Nanotechnology2. Biosynthesis of ZnO nanostructures3. Bulk synthesis of ZnO nanostructures4. Plant-mediated Synthesis and their characterization5. Microbial-mediated Synthesis and their characterization6. Enzyme-assisted Synthesis and their characterization7. A comparative study for the synthesis of ZnO nanosctructuresSection 2: Applications of ZnO Nanostructures8. ZnO nanostructures in electrical energy harvesting9. ZnO nanostructures in photovoltaic devices10. ZnO nanostructures in photocatalysis of dyes11. Sensing ability of ZnO nanostructures12. ZnO nanostructures for Environmental Remediation13. ZnO nanostructures in EMI shielding14. ZnO nanostructures in biological applications15. ZnO nanostructures in Healthcare (wound healing, skin care and bioimaging)Section 3: Toxicity, Challenges and Future Prospects16. Toxicity of ZnO nanostructures to aquatic life17. Impact of ZnO nanostructures on bacteria and fungi18. Challenges in Synthesis of ZnO nanostructures19. Future Prospects and Emerging Trends