Abstract
This paper reports that strongly coupled bimetallic core-shell nanoparticle arrays show photoelectrocatalytic activity for hydrogen evolution reactions (HER). We fabricated large-area Cu-Pt nanoparticle lattices by combining top-down lithography and solution-based chemistry. These coupled lattices support two different types of plasmon modes, localized surface plasmons from individual particles and surface lattice resonances (SLRs) from the 2D lattice, that increased HER catalytic activity under white-light illumination up to 60%. Comparing photoelectrocatalytic performances of the two plasmon modes at different wavelength ranges, we found that SLRs had two-fold activity enhancement over that from localized surface plasmons.
| Original language | English (US) |
|---|---|
| Pages (from-to) | 1523-1529 |
| Number of pages | 7 |
| Journal | Nano letters |
| Volume | 21 |
| Issue number | 3 |
| DOIs | |
| State | Published - Feb 10 2021 |
Funding
This work was supported by the Vannevar Bush Faculty Fellowship from the U.S. Department of Defense (DOD N00014-17-1-3023). S.D. gratefully thanks support from the Cottrell Fellowship and the Research Corporation for Science Advancement. This work used the Northwestern University Micro/Nano Fabrication Facility (NUFAB), which is partially supported by Soft and Hybrid Nanotechnology Experimental (SHyNE) Resource (NSF ECCS-1542205), the Materials Research Science and Engineering Center (DMR-1720139), the State of Illinois, and Northwestern University. Samples were characterized using the Electron Probe Instrumentation Center (EPIC) and Scanned Probe Imaging and Development (SPID) facilities of Northwestern University’s NUANCE Center, which has received support from the SHyNE Resource; the Materials Research Science and Engineering Center (MRSEC) program (NSF DMR-1121262) at the Materials Research Center; the International Institute for Nanotechnology (IIN); the Keck Foundation; and the State of Illinois, through the IIN. The photoelectrocatalytic characterizations were performed at Professor Jiaxing Huang’s group in the Department of Materials Science and Engineering at Northwestern University.
Keywords
- Surface lattice resonance
- bimetallic core-shell nanoparticle
- hydrogen evolution reaction
- index mismatch
- lattice plasmon
- solar energy conversion
- water splitting
ASJC Scopus subject areas
- Bioengineering
- General Chemistry
- General Materials Science
- Condensed Matter Physics
- Mechanical Engineering
