title: Additive-mediated electrochemical synthesis of platelike copper crystals for methanol electrooxidation.
abstract: A room-temperature electrochemical approach to synthesizing anisotropic platelike copper microcrystals and nanocrystals in the presence of potassium bromide is presented. Morphological and elemental characterization was performed using SEM, TEM, and XRD to confirm the anisotropic morphology and crystal structure of the synthesized copper particles. A possible mechanism for explaining the anisotropic crystal growth is proposed on the basis of the preferential adsorption of bromide ions to selective crystal faces. The shape-dependent electrocatalytic property of copper particles is demonstrated by its enhanced catalytic activity for methanol oxidation. Further development of such anisotropic copper particles localized on an electrode surface will lead us to find a suitable alternative for noble metal-based electrocatalysts for the methanol oxidation reaction relevant to fuel cells.
authors.affiliation: Department of Chemical and Biomolecular Engineering, ‡Coordinated Instrumentation Facility, §Department of Chemistry, and ∥Department of Physics and Engineering Physics, Tulane University , New Orleans, Louisiana 70118, United States.
authors.forename: Rajesh
authors.initials: R
authors.lastname: Venkatasubramanian
authors.forename: Jibao
authors.initials: J
authors.lastname: He
authors.forename: Michael W
authors.initials: MW
authors.lastname: Johnson
authors.forename: Ilan
authors.initials: I
authors.lastname: Stern
authors.forename: Dae Ho
authors.initials: DH
authors.lastname: Kim
authors.forename: Noshir S
authors.initials: NS
authors.lastname: Pesika
mesh_terms: D016880:Anisotropy; D001965:Bromides / Q000737:chemistry; D003300:Copper / Q000737:chemistry*; D003460:Crystallization; D055664:Electrochemical Techniques; D000432:Methanol / Q000737:chemistry*; D010084:Oxidation-Reduction; D010316:Particle Size; D017680:Potassium Compounds / Q000737:chemistry; D013499:Surface Properties
chemical_list: D001965:Bromides; D017680:Potassium Compounds; D003300:Copper; C039004:potassium bromide; D000432:Methanol