Presentation Information
[25p-31B-8]Novel growth mechanism of star-shaped Au-Ag nanoparticles by underpotential deposition
〇(D)Yuta Aida1, Yasuhiro Nakagawa1, Tetsuo Kishi1, Yoshihiro Nemoto2, Masaki Takeguchi2, Yasutaka Anraku1, Toshiyuki Ikoma1 (1.Tokyo Tech, 2.NIMS)
Keywords:
star-shaped Au-Ag nanoparticle,under potential deposition
Star-shaped Au-Ag nanoparticles (AuAgNS) with a spine-like structure have attracted attention as a material with high photothermal conversion due to their unique structure. In order to improve the photothermal conversion efficiency, it is necessary to elucidate the growth mechanism of AuAgNS, but the distribution and functions of Ag are still unknown. In this study, we analyzed the crystal plane and elemental distribution of AuAgNS in detail and investigated its growth mechanism.
Under potential deposition (UPD) was considered as the growth mechanism. It is thought that it grew into a thorn-like structure due to Ag precipitation and stabilization of specific crystal planes due to UPD.
Under potential deposition (UPD) was considered as the growth mechanism. It is thought that it grew into a thorn-like structure due to Ag precipitation and stabilization of specific crystal planes due to UPD.