期刊
ELECTROCHIMICA ACTA
卷 176, 期 -, 页码 86-95出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.electacta.2015.06.137
关键词
Bimetallic nanochain networks; Allantoin; Wet-chemical synthesis; Methanol oxidation reaction; Oxygen reduction reaction
资金
- National Natural Science Foundation of China [21475118, 21175118, 21275130]
Bimetallic PdAu alloyed nanochain networks (PdAu NCNs) were facilely prepared by a simple wet-chemical method with the assistance of allantoin as the structure-directing agent and stabilizing agent. Allantoin played an important role in the formation of chain-like networks. The products were mainly characterized by transmission electron microscopy (TEM), high-angle annular dark-field scanning transmission electron microscopy (HAADF-STEM), X-ray diffraction (XRD), and X-ray photoelectron spectroscopy. The as-prepared PdAu NCNs had enlarged electrochemical active surface area, and displayed enhanced electrocatalytic activity toward oxygen reduction reaction (ORR) and methanol oxidation reaction (MOR), showing higher resistance to poisoning CO-like intermediates in MOR and more positive onset potential in ORR as compared to commercial Pd black catalyst. This approach provides a promising route for large-scale preparation of desirable bimetallic catalysts with the assistance of small biomolecules. (C) 2015 Elsevier Ltd. All rights reserved.
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