This book centers on advancing sustainable materials and green nanotechnology as key enablers of a low-carbon, resource-efficient future. It brings together cutting-edge innovations in nanomaterials, porous frameworks, smart composites, electrocatalytic systems, biomass valorization, and environmental technologies, offering a unique perspective on how next-generation materials can drive the emerging green economy. The book highlights a broad spectrum of contemporary material platforms, ranging from MOFs, COFs, graphitic carbon nitride, and 2D materials to bio-based and hybrid systems, nano-coatings, and thermoplastic starch. Each chapter explores not only fundamental principles and synthesis strategies but also real-world applications in renewable energy production, photocatalysis, capacitive deionization, CO₂ capture, AI assisted anaerobic digestion, environmental pollutant sensing, and advanced environmental remediation. This book serves as an essential reference for researchers, graduate students, engineers, and industry practitioners working in nanotechnology, materials science, chemical engineering, and environmental technology.

Prof. Sandhya Babel is a Distinguished Professor at the School of Integrated Science and Innovation (ISI), Sirindhorn International Institute of Technology, Thammasat University, Thailand. She earned her PhD from Asian Institute of Technology, Thailand. Her research focuses on environmental sustainability, particularly in areas of waste valorization, microbial fuel cells, nanomaterials, adsorption, photocatalysis, resource recovery, microplastics, phytoremediation, life cycle assessment (LCA), and membrane technology. She is continuously working on development of low-cost green technology for environmental sustainability. She has authored over 180 research papers in reputed international journals, four edited books, and several book chapters. Her outstanding contributions to environmental research have earned her multiple honors. She has been recognized among the world’s top 2% of scientists in the field of Environmental Sciences by Stanford University and Elsevier BV both for her entire career and for single-year performance for six consecutive years (2020-2025). Dr. Babel has received the Distinguished Alumni Award from the Asian Institute of Technology (AIT) and several awards from Thammasat University for her exceptional research achievements. She was honored with the Outstanding Researcher award in Science and Technology from Thammasat University, Thailand, recognizing her excellence and leadership in advancing sustainable environmental technologies.

Dr. Akash Balakrishnan is currently serving as Assistant Professor in the Department of Energy Engineering, School of Engineering and Sciences, SRM University-AP Amaravati, Andhra Pradesh, India. He earned his PhD in Chemical Engineering from the National Institute of Technology, Rourkela. He has published over 40 peer-reviewed papers, which have collectively received over 2,500 citations. Dr. Balakrishnan is recognized among the top 2% of global scientists for his impactful research contributions. His work focuses on developing innovative photocatalytic and advanced oxidation systems for environmental remediation, including biopolymer-based hydrogels, reactive oxygen species-assisted degradation mechanisms, and hybrid catalytic platforms for pollutant and PFAS removal from water. He has led multiple interdisciplinary projects integrating materials science, chemical engineering, and sustainability principles. His research has received national-level recognition, including the ‘Ideas for Life’ third prize and the PJMT National Winner award. His contributions emphasize green and sustainable technologies, such as hydrogel-supported photocatalysis, PMS activation, green hydrogen production, green ammonia, and life-cycle assessment of environmental remediation systems. With a strong focus on translating laboratory innovations into scalable solutions, Dr. Balakrishnan continues to advance hybrid oxidation technologies, biopolymer catalysts, and advanced materials for environmental protection. His editorial work reflects his commitment to promoting high-quality scientific literature in sustainable chemistry, catalysis, and water treatment technologies.

Dr. Paiboon Sreearunothai is an Associate Professor at the School of Integrated Science and Innovation, Sirindhorn International Institute of Technology, Thammasat University, Thailand. His research focuses on sustainable materials, environmental technologies, circular-economy processes, and pollution mitigation. His recent work includes the development of waste-derived porous materials, metal–organic frameworks, adsorbents, and heterogeneous catalysts from industrial and biowaste resources for applications in gas adsorption, wastewater treatment, pollutant remediation, and biomass conversion.

Dr. Sreearunothai has worked extensively on the valorization of waste materials, including PET plastics, aluminum dross, spent batteries, industrial sludge, and biomass-derived resources, into functional materials for environmental and energy-related applications. His research interests cover adsorption and separation, environmental catalysis, advanced oxidation processes, CO₂ capture and conversion, nitrate utilization, and the catalytic transformation of biomass-derived feedstocks into value-added platform chemicals. He has also contributed to research on sustainable wastewater treatment, heavy-metal removal, dye adsorption, and the development of functional nanomaterials for environmental remediation. Dr. Sreearunothai is also actively involved in academic teaching, graduate supervision, curriculum development, and research at SIIT, Thammasat University. Through his research and teaching activities, Dr. Sreearunothai continues to promote the integration of materials science, environmental engineering, and circular-economy concepts for the development of sustainable solutions to emerging environmental challenges.

Dr Binod Parameswaran is currently serving as a Senior Principal Scientist (Scientist F) in the Biosciences and Bioengineering Division of the CSIR–National Institute for Interdisciplinary Science and Technology (CSIR-NIIST), Thiruvananthapuram, India. He obtained his PhD in Biotechnology from the University of Kerala, Thiruvananthapuram, and subsequently completed his postdoctoral research at the Korea Institute of Energy Research (KIER), Daejeon, South Korea, before joining CSIR-NIIST as a Scientist.

His research interests encompass sustainable bioprocesses, biomass-to-fuel and chemical production, biopolymers, and enzyme technology. Dr. Parameswaran has published over 230 research articles, with an h-index of 86, and has authored or edited 9 books and more than 110 book chapters. He has been listed among the World’s Top 2% of Scientists for career-long impact by Stanford University and Elsevier BV consecutively for six years (2020–2025).

He is the recipient of numerous prestigious awards and fellowships, including the Young Scientist Award from the International Forum on Industrial Bioprocesses (France), the Kerala State Young Scientist Award from the Kerala State Council for Science, Technology and Environment, Prof. S. B. Chincholkar Memorial Award of the Biotech Research Society, India, Research Excellence Award (IBA, France), Elsevier Impactful Research Award, Elsevier Renewable Energy Best Paper Award, Visiting Fellowship at EPFL, Switzerland, and Marie Curie Fellowship, among others.

Dr. Parameswaran is a Fellow of the International Society for Energy, Environment and Sustainability (ISEES). He also serves as a National Honorary Advisory Board Member of the Centre for Energy and Environmental Sustainability (CEES), India, Central Office Executive of the Biotech Research Society, India, and India Office Executive of the International Bioprocessing Association.