Tuning Surface Structure and Strain in Pd–Pt Core–Shell Nanocrystals for Enhanced Electrocatalytic Oxygen Reduction. Issue 7 (18th November 2016)

• Record Type: Journal Article
• Authors: Xiong, Yalin; Shan, Hao; Zhou, Zhengnan; Yan, Yucong; Chen, Wenlong; Yang, Yaxiong; Liu, Yongfeng; Tian, He; Wu, Jianbo; Zhang, Hui; Yang, Deren
• Is Part Of: Small. Volume 13:Issue 7(2017)
• Page Start: n/a
• Page End: n/a
• Publication Date: 2016-11-18
• Subjects: oxygen reduction reaction -- Pd@Pt core–shell nanocrystals -- Pt ultrathin shells -- surface strain -- surface structures; Nanotechnology -- Periodicals; Nanoparticles -- Periodicals; Microtechnology -- Periodicals; 620.5
• DOI: 10.1002/smll.201603423
• Languages: English
• ISSNs: 1613-6810

Abstract

Abstract : Icosahedral, octahedral, and cubic Pd@Pt core–shell nanocrystals with two atomic Pt layers are epitaxially generated under thermodynamic control. Such icosahedra exhibit remarkably enhanced catalytic properties for oxygen reduction reaction compared to the octahedra and cubes as well as commercial Pt/C, which can be attributed to ligand and geometry effects, especially twin‐induced strain effect that is revealed by geometrical phase analysis.