Journal
APPLIED CATALYSIS B-ENVIRONMENTAL
Volume 277, Issue -, Pages -Publisher
ELSEVIER
DOI: 10.1016/j.apcatb.2020.119226
Keywords
Hetero-nanostructures; Surface plasmon resonance (SPR); Formic acid dehydrogenation; Single-particle study; Enhanced electromagnetic field
Funding
- National Natural Science Foundation of China [21802087, 21333006, 51602179, 21573135]
- Natural Science Foundation of Shandong Province [ZR2019QB005]
- Recruitment Program for Young Professionals, China
- Taishan Scholar Foundation of Shandong Province
- Qilu Young Scholars Project of Shandong University
- Outstanding Young Scholars Project of Shandong University
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Plasmonic nanostructures can be used to drive the commercial catalytic reactions under mild conditions by the surface plasmon resonance (SPR). Herein, heterostructural Pd-dotted Ag@Au hexagonal nanoplates (HNPs) are synthesized via an anisotropic growth process, which exhibit 100 % H-2 selectivity, highly enhanced catalytic activity (1062 h(-1) at 0 degrees C) for formic acid dehydrogenation by utilizing the light energy. The plasmon-induced mechanism was studied by single-particle photoluminescence (PL) and finite difference time domain (FDTD) simulation. The enhanced interaction between the HCOOH molecules and the catalysts resulting from the surface charge heterogeneity and sharp field-gradient near the Pd-dots region, and bond activation via SPR-enhanced local electromagnetic field are the main contributions for the SPR-induced catalysis. The findings provide a promising approach for the design of hybrid plasmonic photocatalysts to drive harsh chemical conversion at mild conditions.
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