期刊
ACS APPLIED ENERGY MATERIALS
卷 1, 期 9, 页码 4606-4616出版社
AMER CHEMICAL SOC
DOI: 10.1021/acsaem.8b00772
关键词
Pt-end-capped gold nanorods; ferroelectrics; surface plasmon resonance; hot electrons; photocatalysts; H-2 production
资金
- Chemistry Department, North Carolina State University
- State of North Carolina
- National Science Foundation [ECCS-1542015]
Plasmonic nanoparticles are excellent light absorbers for harvesting solar energy, resulting in hot electrons that can be utilized in photocatalytic hydrogen production. However, the hot electrons generated in a localized surface plasmon resonance process have a very short lifetime and are challenging to use efficiently. Herein, using near IR light irradiation, we show that by combining gold nanorods (AuNRs) with ferroelectric PbTiO3 particles that possess a large remanent electric dipole moment, hot charges generated on plasmonic particles can be injected into ferroelectric materials and drive the photocatalysis reaction. Compared to metallic Pt-end-capped AuNRs, the efficiency of using hot electrons for photocatalytic reactions is enhanced for the composite catalyst, which improves the light-to-chemical energy conversion efficiencies by about 1 order of magnitude for the same amount of plasmonic particles being used.
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