title: Remarkable enhancement of electrocatalytic activity by tuning the interface of Pd-Au bimetallic nanoparticle tubes.
abstract: The interface, which formed in a bimetallic system, is a critical issue to investigate the fundamental mechanism of enhanced catalytic activity. Here, we designed unsupported Pd-Au bimetallic nanoparticle tubes with a tunable interface, which was qualitatively controlled by the proportion of Pd and Au nanoparticles (NPs), to demonstrate the remarkably enhanced effect of Pd and Au NPs in electro-oxidation of ethanol. The results demonstrated that the electrocatalytic activity is highly relative to the interface and has no direct relation with individual metal component in the Pd-Au system. This effect helps us in achieving a fundamental understanding of the relationship between their activity and the interface structure and chemical properties and, consequently, is helpful in designing new catalysts with high performances.
authors.affiliation: Division of Nanomaterials and Chemistry, Hefei National Laboratory for Physical Sciences at Microscale, Department of Chemistry, University of Science and Technology of China, Hefei 230026, People's Republic of China.
authors.forename: Chun-Hua
authors.initials: CH
authors.lastname: Cui
authors.forename: Jin-Wen
authors.initials: JW
authors.lastname: Yu
authors.forename: Hui-Hui
authors.initials: HH
authors.lastname: Li
authors.forename: Min-Rui
authors.initials: MR
authors.lastname: Gao
authors.forename: Hai-Wei
authors.initials: HW
authors.lastname: Liang
authors.forename: Shu-Hong
authors.initials: SH
authors.lastname: Yu
mesh_terms: D002384:Catalysis; D003460:Crystallization / Q000379:methods*; D004563:Electrochemistry / Q000379:methods*; D006046:Gold / Q000737:chemistry*; D046911:Macromolecular Substances / Q000737:chemistry; D008422:Materials Testing; D008968:Molecular Conformation; D049329:Nanostructures / Q000737:chemistry* / Q000648:ultrastructure*; D010165:Palladium / Q000737:chemistry*; D010316:Particle Size; D013499:Surface Properties
chemical_list: D046911:Macromolecular Substances; D010165:Palladium; D006046:Gold