Journal
CHEMISTRY-AN ASIAN JOURNAL
Volume 14, Issue 21, Pages 3868-3874Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/asia.201901098
Keywords
electrocatalysts; hollow PtPdIr nanospheres; mesoporous structures; methanol oxidation reaction; oxygen reduction reaction
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Funding
- National Natural Science Foundation of China [21601154, 21776255, 21701141]
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Designing and constructing nano-architectures with abundant reactive atoms exposed on the surface and widely open pore interiors is an effective strategy for highly efficient utilization of Pt-based catalysts. Herein, we report a facile method to synthesize tri-metallic PtPdIr mesoporous hollow nanospheres (PtPdIr MHNSs) by selective chemical removal of sacrificial metallic cores from pre-constructed Pd@PtIr mesoporous nanospheres (Pd@PtIr MNSs). The unique nano-architectures, with mesoporous shells interconnected into the interior hollow cavities and the synergistic electronic effect from tri-metallic PtPdIr composition, enable the as-synthesized PtPdIr MHNSs to be efficient bifunctional electrocatalysts for catalyzing both methanol oxidation reaction (MOR) and oxygen reduction reaction (ORR).
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