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- Title
Electrochemical fabrication of multiplicate palladium hierarchical architectures and their electrocatalysis toward oxidation of formic acid.
- Authors
Chai, Jia; Li, Fenghua; Bao, Yu; Liu, Shiwei; Zhang, Qixian; Niu, Li
- Abstract
Dendritic, cactoid, splintery flowers-like and spinous flowers-like micro/nano-Pd hierarchical architectures were successfully deposited on the conductive substrates without assistance of any templates. Distinct from other general electrodeposition at a constant potential or cyclic potential, we utilized pulse potentials as deposition and dissolution potential, which were controlled by a simple and convenient electrochemical method-differential pulse amperometry. It was found that the morphologies of these novel micro/nanoparticles could be regulated with different pulse potentials. The resulting nanostructures were characterized by scanning electron microscopy and X-ray diffractometry. The results show that series of Pd micro/nanoparticles were bounded on the different index facets. It means that the growth direction could be effectively controlled by regulating the pulse potentials. Moreover, the as-synthesized Pd micro/nanoparticles also exhibited strikingly difference in catalytic activity toward electrooxidation of formic acid.
- Subjects
DENDRITIC crystals; PALLADIUM; ELECTROPLATING; NANOSTRUCTURES; FORMIC acid
- Publication
Journal of Solid State Electrochemistry, 2012, Vol 16, Issue 3, p1203
- ISSN
1432-8488
- Publication type
Article
- DOI
10.1007/s10008-011-1473-x