Journal
CHEMISTRY-AN ASIAN JOURNAL
Volume 8, Issue 6, Pages 1120-1127Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/asia.201300078
Keywords
copper; electrochemistry; mesoporous materials; nanostructures; reduction
Categories
Funding
- National Natural Science Foundation of China [20901057, 11074185]
- National Basic Research Program of China [2009CB939901]
- Tianjin Natural Science Foundation [10JCYBJC01800]
- Innovation Foundation of Tianjin University
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Porous hybrid Cu2O/polypyrrole nanoflakes have been synthesized from solid CuO nanoplate templates through the pyrrole-induced reductive transformation reaction at elevated temperature. The conversion mechanism involves the reductive transformation of CuO to Cu2O and the in situ oxidative polymerization of pyrrole to polypyrrole. In addition, the morphology of the as-converted nanohybrids depends on the shape of the CuO precursors. The strategy enables us to transform single-crystalline CuO nanosheets into hollow hybrid Cu2O/polypyrrole nanoframes. The ability to transform CuO and an organic monomer into porous hybrid materials of conducting polymer and Cu2O with macrosized morphological retention opens up interesting possibilities to create novel nanostructures. Electrochemical examinations show that these porous hybrid Cu2O/polypyrrole nanostructures exhibit efficient catalytic activity towards oxygen reduction reaction (ORR), excellent methanol tolerance ability, and catalytic stability in alkaline solution, thus making them promising nonprecious-metal-based catalysts for ORR in alkaline fuel cells and metalair batteries.
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