Abstract
Galvanic replacement reactions have been successfully employed to produce hollow bimetallic nanostructures with a range of shapes. This paper presents a systematic study of the galvanic replacement reaction between 122 nm thick hexagonal Ag nanoplates and HAuCl4 in an aqueous medium. We monitored the morphological and spectral changes as a function of the HAuCl4-to-Ag molar ratio. The replacement reaction on the hexagonal Ag nanoplates resulted in the formation of a series of porous Au–Ag nanostructures with a hex nut shape. The size and density of the pores could be controlled by varying the molar ratio of HAuCl4-to-Ag molar ratio. The localized surface plasmon resonance (LSPR) peaks of these nanostructures were readily tuned from 494 nm to 1044 nm as the porosity of the product was increased.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
