SERS and Catalytic Performance with Tailored Surface Engineering of Bimetallic Au@Ag Nano-Urchins
Misbah Khan, Hayat Ullah, Shehla Honey, Abdul Manan, Maliha Sarfaraz, Shaheed Ullah, Munzer Ullah, Zarif Gul
Abstract
Efficient bimetallic nanostructures, which show properties related to two sole metals, have empowered inventive applications in nanosciences and nanotechnology. Here, we construct bimetallic Au@Ag nano-urchins with controlled Au tips for Catalysis and SERS application. The proposed nano-urchins were synthesized via electrochemical and simple galvanic replacement reaction route. The construction of Ag nano-flowers via electrochemical deposition use as a shell and Au tips were grown via galvanic reaction route greatly enhanced SERS properties of crystal violet (CV) detection and stability of nanostructures. In a comparison of Ag flower-like structures, the catalysis properties of Au@Ag nano-urchins are extremely efficient in degrading p-nitrophenol. As a result, these bimetallic nano-urchins show great development in SERS substrate and efficient catalysts.