Controllable Synthesis of Marks Decahedral Pd Nanoparticles via Etching

Abstract

Marks decahedral nanoparticles have attracted significant attention in recent years. In this work, a method of synthesizing Marks decahedron via etching regular decahedral nanoparticles is proposed and verified by Pd nanoparticles, which shows a high yield of Marks decahedron. The present work suggests that one can tune the concave size of Marks decahedral via controlling the etching time and the amount of Poly(vinyl pyrrolidone) (PVP). The thermal stability of Marks nanoparticles is explained by Bond-Energy model, which predicts the largest groove to be the most stable configuration. Moreover, the present method can be extended to synthesize Marks decahedral nanoparticles of other elements, and is of great significance for further studies and applications of Mark decahedral nanoparticles.