期刊
JOURNAL OF ELECTROANALYTICAL CHEMISTRY
卷 738, 期 -, 页码 1-7出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.jelechem.2014.11.017
关键词
Electrodeposition; Urchin-like nanoparticles; Nitrite ion; Electrocatalytic activity; Methanol
资金
- National Natural Science Foundation of China [21175118, 21475118, 21275130]
- Zhejiang province university young academic leaders of academic climbing project [pd2013055]
A simple, facile, green, and controlled one-step electrodeposition method was developed for preparation of well-defined urchin-like Pd nanoparticles on a glassy carbon electrode, using nitrite ions as the growth directing agent. No any organic solvent, template, surfactant, seed, or complex apparatus was involved. The as-prepared Pd nanostructures had clean surfaces because of the surfactant-free formation process. The obtained Pd deposits were characterized by scanning electron microscopy (SEM), transmission electron microscopy (TEM), and X-ray diffraction (XRD). The experimental parameters including deposition potential, the dosage of H2PdCl4 and nitrite ions, and deposition time were investigated in details. The urchin-like Pd nanopartides demonstrated better tolerance, enhanced electrocatalytic activity, and superior stability toward methanol oxidation in alkaline media. (C) 2014 Elsevier B.V. All rights reserved.
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