Nanotechnology in Green Chemistry: Toward Eco-Friendly Solutions

Introduction:: Nanotechnology has emerged as a powerful platform for advancing green chemistry; however, the translation of nanoscale innovations into truly sustainable and industrially viable chemical processes remains limited by challenges related to scalability, safety, and environmental impact. Therefore, there is a growing need for integrative approaches that combine nanotechnology with sustainable chemical engineering strategies. Methods:: This study develops a systematic framework based on a structured review and analysis of recent literature on green nanotechnology and sustainable catalysis. Relevant studies were selected from peer-reviewed scientific databases focusing on green synthesis methods, nanomaterial-enabled catalysis, and computational approaches in sustainable chemical engineering. The collected studies were critically analyzed to identify emerging trends, technological gaps, and practical implementation strategies. Results:: The review highlights that metal nanoparticles, nanocomposites, and biopolymer-based nanostructures significantly improve catalytic efficiency while reducing energy consumption and minimizing toxic by-product formation. The use of biologically derived and biodegradable precursors for nanomaterial synthesis reduces hazardous chemical usage. Additionally, the integration of computational modeling and artificial intelligence tools enables the prediction of structure–function relationships and supports rational design of nanomaterials. Applications of these nanostructured materials extend across environmental domains such as pollution remediation, waste valorization, water purification, and renewable energy systems. Discussion:: The findings suggest that integrating nanotechnology with green chemistry principles can bridge the gap between laboratory innovation and industrial implementation. However, challenges related to regulatory frameworks, environmental safety, and cost-effective scalability remain key considerations for widespread adoption. Conclusion:: Overall, nanotechnology serves as a critical driver of innovation in sustainable chemical engineering, offering practical pathways toward cleaner, safer, and more resilient chemical processes aligned with circular economy principles.