公开(公告)号：US20180214943A1

公开(公告)日：2018-08-02

申请号：US15580377

申请日：2016-06-09

申请人： Georgia Tech Research Corporation

发明人： YOUNAN XIA ,  DONG QIN ,  XUE WANG ,  SANG-IL CHOI ,  SUJIN LEE ,  LEI ZHANG ,  XIAOJUN SUN ,  JUNKI KIM ,  MING ZHAO

IPC分类号： B22F1/00 ,  B22F9/16 ,  B22F1/02

CPC分类号： B22F1/0018 ,  B22F1/025 ,  B22F9/16 ,  B22F9/24 ,  B22F2001/0029 ,  B22F2001/0037 ,  B22F2301/25 ,  B22F2304/054 ,  B22F2998/10 ,  B22F2003/244

摘要： A variety of polyhedral nanocages are provided having a hollow interior, ultrathin walls, and well-defined facets of metal atoms. The nanocages can include a variety of precious metals such as Pt, Au, Ru, Rh, or Ir. The metal atoms can take a face-centered cubic structure with {111} facets on the surface. The walls can be thin, sometimes less than 1 nm in thickness or only a few atomic layers in thickness. The nanocages can provide for efficient uses of valuable precious metals, among other things, in catalysis. For example, catalysts are provided exhibiting high mass activities in oxygen reduction reactions. Methods of making and methods of using the nanocages and catalysts are also provided.