Details

Autor(en) / Beteiligte

• Mughal, Hania Feroz
• Khan, Ghazanfar Ali
• Shafiq, Muhammad
• Hyder, Muhammad Zeeshan
• Ahmed, Waqqar

Titel

Facile room-temperature synthesis of cetyltrimethylammonium bromide (CTAB) coated spherical silver nanoparticles and their surface-enhanced Raman scattering (SERS) and antibacterial applications

Ist Teil von

• Chemical papers, 2024-04, Vol.78 (6), p.4019-4027

Ort / Verlag

Cham: Springer International Publishing

Erscheinungsjahr

2024

Quelle

Alma/SFX Local Collection

Beschreibungen/Notizen

• Silver nanoparticles (AgNPs) are appealing due to their cost-effectiveness and remarkable capabilities in sensing and antibacterial applications. Herein, we report a facile near room-temperature synthesis of AgNPs capped with a cationic surfactant using a single-step recipe. The AgNPs were synthesized by reducing silver ions with ascorbic acid in a basic reaction medium, and in the presence of cetyltrimethylammonium bromide (CTAB). By varying the concentration of CTAB and the pH of the reaction medium, the yield of the AgNPs can be tuned. The essential experimental conditions supporting the high yield of uniform AgNPs are 10 mM concentration of CTAB and a strong basic pH. The impact of aging on AgNPs was also investigated by examining changes in their ultraviolet–visible (UV–Vis) spectra over time. The AgNPs, purified by centrifugation and redispersed in CTAB solution, showed reliable shelf-life under both light and dark storage conditions. Furthermore, the synthesized AgNPs showed excellent surface-enhanced Raman scattering (SERS)-based trace detection toward anionic dye, methyl orange (MO). The AgNPs allowed detecting MO down to 10 –10  M. Finally, the AgNPs also exhibited good antibacterial activity against two gram-positive bacteria, namely Enterococcus spps. and Staphylococcus aureus .