Ahari, HamedOzdal, TugbaKhosravi-Darani, KianoushMoradi, Sima2026-02-152026-02-1520242008-92952228-532610.57647/inl.2024.1402.05https://doi.org/10.57647/inl.2024.1402.05https://hdl.handle.net/20.500.14517/8783In recent years, there has been a growing interest in nanoparticles for preparing nanocatalysts used in the catalysis of many important industrial reactions. Indeed, nanotechnology provides a promising strategy for developing green nanocatalysts which are known as environment-friendly catalysts promoting the different chemical reactions. On the other hand, Nanosensors are some nanostructured materials capable of sensing (1) environmental alterations like temperature, pressure, and pH, (2) different kinds of toxins or pollutions in soils, air, and water, and (3) biochemical and metabolic changes inside cells. Therefore, nanosensors can be applicable for detecting physical and chemical factors in a variety of areas including the food industry, environmental issues (detecting pollutions), medicine (clinical diagnosis applications), biological research, and military (antiterrorism applications). Nowadays, nanomaterials are widely used for developing nanosensors, which include carbon nanotubes, polymers, metals, metal oxides, thin films, and graphene. While previous reviews have often addressed nanocatalysis or nanosensors in isolation, they rarely integrate both fields or emphasize their shared nanomaterials and applications in sustainable contexts, such as green chemistry and food safety. This chapter fills these gaps by providing a comprehensive overview of nanocatalysts and nanosensors, their current applications in various areas (with a focus on the food industry for pathogen detection, biofuel production, and preservation), and future perspectives, including emerging trends in biodegradable and recyclable nanomaterials. By bridging these domains, this review offers unique insights into interdisciplinary advancements that promote eco-friendly innovations and address challenges in scalability and toxicity. A notable portion of the review specifically highlights applications in the food industry, including pathogen detection, biofuel production, and food preservation. While previous literature may discuss these applications, this review ties together the roles of both nanocatalysts and nanosensors within this essential sector, providing insights that may have been overlooked in earlier studies. This review stands out due to its integrative approach, deep focus on sustainability and food applications, insights into regulatory environments, and critical evaluation of the potential risks associated with nanomaterials, making it a timely and relevant contribution to the field of nanotechnology.eninfo:eu-repo/semantics/closedAccessNanotechnologyNanomaterialNanocatalystsGreen ChemistryNanosensorsArticle