Biogenesis of Prism-Like Silver Oxide Nanoparticles Using Nappa Cabbage Extract and Their -Nitrophenol Sensing Activity.

The present study aimed to explore the eco-friendly synthesis of prism-like silver oxide nanoparticles (AgONPs) from nappa cabbage extract and its -nitrophenol sensing activity. The prepared AgONPs were characterized by X-ray diffraction (XRD), field-emission scanning spectroscopy (FESEM), energy-dispersive spectroscopy (EDS), transmission electron microscopy (TEM), and ultraviolet (UV)-visible light spectral analysis (UV-Vis). -Nitrophenol sensing properties of the prepared nanoparticles were also determined using a simple I-V method. The results showed that the as-prepared AgONPs have a face-centered cubic (fcc) crystalline nature and a prism-like morphology with particle size in the range 21.61-92.26 nm. The result also showed a high intensity of the (111) facet, making the AgONP-carbon black/nickel foam electrode (AgONP-C/NFE) exhibit a high-performance response to -nitrophenol spanning a wide range of concentrations from 1.0 mM to 0.1 pM and a response time of around 5 s, indicating a high potential for water treatment applications.