Polyelectrolyte‐Multilayer‐Supported Au@Ag Core‐Shell Nanoparticles with High Catalytic Activity

• DOI: 10.1002/adma.201201712
• Publication Date: 2012-07-16T06:55:43Z
• Authors: Xin Zhang; Zhaohui Su
• Keywords: Quaternary Ammonium Compounds; Silver; Metal Nanoparticles; Polystyrenes; Gold; Polyethylenes; 01 natural sciences; Catalysis; 0104 chemical sciences

Au-Ag bimetallic core-shell nanoparticles are synthesized in situ in polyelectrolyte multilayers via a sequential ion-exchange/reduction process. The Au-Ag bimetallic nanoparticles show a higher catalytic activity than Au and Ag monometallic ones for the reduction of 4-nitrophenol by NaBH(4) .