DOI: https://doi.org/10.36347/sajb.2026.v14i07.005

Pages: 521-527

Nanotechnology has evolved from a novel manufacturing domain into a core driver of sustainable development across two frontiers: environmental remediation and advanced biomedicine. This paper reviews recent breakthroughs in engineered nanomaterials (ENMs), focusing on green-synthesized nanoparticles, nanostructured sorbents, and stimuli-responsive nanocarriers. Regionally tailored, eco-friendly fabrication methods such as phyto-synthesis minimize hazardous chemical production while yielding structurally stable nanoparticles. In environmental applications, these materials exploit extreme surface-area-to-volume ratios to sequester heavy metals, degrade persistent organic pollutants, and sanitize water supplies. Concurrently, in biomedicine, multifunctional nanodevices are transforming targeted drug delivery, tissue scaffolding, and molecular diagnostics. This article synthesizes the cross-disciplinary paradigms of nanoremediation and nanomedicine, evaluates their current limitations, and outlines the regulatory, economic, and toxicological pathways required for safe clinical and environmental deployment.