title: Structural Regulation of PdCu2Nanoparticles and Their Electrocatalytic Performance for Ethanol Oxidation.
abstract: Two types of PdCu2nanoparticles were prepared through one-pot synthesis and a two-step reducing process, named as PdCu2-1 and PdCu2-2, respectively. The morphology and structure of as-prepared samples were investigated by transmission electron microscopy, high-resolution transmission electron microscopy, X-ray diffraction, X-ray photoelectron spectroscopy, and inductively coupled plasma-optical emission spectrometry. Results showed that more Pd atoms were buried in the inside of PdCu2-1, whereas more available Pd sites were distributed on the surface of PdCu2-2. The electrochemical measurements indicated that both PdCu2-1 and PdCu2-2 nanoparticles showed a higher electrocatalytic activity than that for pure Pd nanoparticles. In particular, PdCu2-2 predictably exhibited a better stability and durability as well as a lower onset potential and a higher catalytic current density than that of PdCu2-1 toward ethanol oxidation in alkaline media. On the basis of these studies, the formation mechanisms of both the PdCu2catalysts and the relationship between their structure and properties were discussed in this paper.
authors.affiliation: Institute of Materials for Energy and Environment , State Key Laboratory Breeding Base of New Fiber Materials and Modern Textile, School of Materials Science and Engineering, Qingdao University , Qingdao 266071, PR China.
authors.forename: Jing
authors.initials: J
authors.lastname: Xue
authors.affiliation: Institute of Materials for Energy and Environment , State Key Laboratory Breeding Base of New Fiber Materials and Modern Textile, School of Materials Science and Engineering, Qingdao University , Qingdao 266071, PR China.
authors.forename: Guangting
authors.initials: G
authors.lastname: Han
authors.affiliation: Institute of Materials for Energy and Environment , State Key Laboratory Breeding Base of New Fiber Materials and Modern Textile, School of Materials Science and Engineering, Qingdao University , Qingdao 266071, PR China.
authors.forename: Wanneng
authors.initials: W
authors.lastname: Ye
authors.affiliation: Institute of Materials for Energy and Environment , State Key Laboratory Breeding Base of New Fiber Materials and Modern Textile, School of Materials Science and Engineering, Qingdao University , Qingdao 266071, PR China.
authors.forename: Yutao
authors.initials: Y
authors.lastname: Sang
authors.affiliation: Institute of Materials for Energy and Environment , State Key Laboratory Breeding Base of New Fiber Materials and Modern Textile, School of Materials Science and Engineering, Qingdao University , Qingdao 266071, PR China.
authors.forename: Hongliang
authors.initials: H
authors.lastname: Li
authors.affiliation: Institute of Materials for Energy and Environment , State Key Laboratory Breeding Base of New Fiber Materials and Modern Textile, School of Materials Science and Engineering, Qingdao University , Qingdao 266071, PR China.
authors.forename: Peizhi
authors.identifier: http://orcid.org/0000-0002-8773-2196
authors.initials: P
authors.lastname: Guo
authors.affiliation: Institute of Materials for Energy and Environment , State Key Laboratory Breeding Base of New Fiber Materials and Modern Textile, School of Materials Science and Engineering, Qingdao University , Qingdao 266071, PR China.
authors.forename: X S
authors.initials: XS
authors.lastname: Zhao
keywords: Pd-based catalysts; PdCu2; electrocatalysis; solution-phase synthesis; structural regulation