title: Preparation and Catalytic Activity for Aerobic Glucose Oxidation of Crown Jewel Structured Pt/Au Bimetallic Nanoclusters.
abstract: Understanding of the "structure-activity" relations for catalysts at an atomic level has been regarded as one of the most important objectives in catalysis studies. Bimetallic nanoclusters (NCs) in its many types, such as core/shell, random alloy, cluster-in-cluster, bi-hemisphere, and crown jewel (one kind of atom locating at the top position of another kind of NC), attract significant attention owing to their excellent optical, electronic, and catalytic properties. PVP-protected crown jewel-structured Pt/Au (CJ-Pt/Au) bimetallic nanoclusters (BNCs) with Au atoms located at active top sites were synthesized via a replacement reaction using 1.4-nm Pt NCs as mother clusters even considering the fact that the replacement reaction between Pt and Au(3+) ions is difficult to be occurred. The prepared CJ-Pt/Au colloidal catalysts characterized by UV-Vis, TEM, HR-TEM and HAADF-STEM-EELS showed a high catalytic activity for aerobic glucose oxidation, and the top Au atoms decorating the Pt NCs were about 15 times more active than the Au atoms of Au NCs with similar particle size.
authors.affiliation: The State Key Laboratory of Refractories and Metallurgy, Wuhan University of Science and Technology, Wuhan 430081, China.
authors.forename: Haijun
authors.initials: H
authors.lastname: Zhang
authors.affiliation: The State Key Laboratory of Refractories and Metallurgy, Wuhan University of Science and Technology, Wuhan 430081, China.
authors.forename: Liqiong
authors.initials: L
authors.lastname: Wang
authors.affiliation: The State Key Laboratory of Refractories and Metallurgy, Wuhan University of Science and Technology, Wuhan 430081, China.
authors.forename: Lilin
authors.initials: L
authors.lastname: Lu
authors.affiliation: Advanced Materials Institute, Tokyo University of Science Yamaguchi, SanyoOnoda, Yamaguchi 756-0884, Japan.
authors.forename: Naoki
authors.initials: N
authors.lastname: Toshima
mesh_terms: D002384:Catalysis; D005947:Glucose / Q000737:chemistry*; D006046:Gold / Q000737:chemistry*; D049329:Nanostructures / Q000737:chemistry*; D010984:Platinum / Q000737:chemistry*
chemical_list: D010984:Platinum; D006046:Gold; D005947:Glucose