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Journal article
In situ surface-enhanced Raman scattering shows ligand-enhanced hot electron harvesting on silver, gold, and copper nanoparticles
JOURNAL OF CATALYSIS, v 383
Mar 2020
Featured in Collection : UN Sustainable Development Goals @ Drexel
Abstract
Hot carriers (electrons and holes) generated from the decay of localized surface plasmon resonances can take a major role in catalytic reactions on metal nanoparticles. By obtaining surface enhanced Raman scattering (SERS) spectra of p-aminothiophenol as product of the reduction of p-nitrothiophenol by hot electrons, different catalytic activity is revealed here for nanoparticles of silver, gold, and copper. As a main finding, a series of different ligands, comprising halide and non-halide species, are found to enhance product formation in the reduction reaction on nanoparticles of all three metals. A comparison with the standard electrode potentials of the metals with and without the ligands and SERS data obtained at different electrode potential indicate that the higher catalytic activity can be associated with a higher Fermi level, thereby resulting in an improved efficiency of hot carrier generation. The concept of such a ligand-enhanced hot electron reduction provides a way to make light-to-chemical energy conversion more efficient due to improved electron harvesting. (C) 2020 Elsevier Inc. All rights reserved.
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Details
- Title
- In situ surface-enhanced Raman scattering shows ligand-enhanced hot electron harvesting on silver, gold, and copper nanoparticles
- Publication Details
- JOURNAL OF CATALYSIS, v 383
- Publisher
- ACADEMIC PRESS INC ELSEVIER SCIENCE; SAN DIEGO
- Number of pages
- 0
- Grant note
- We thank Dr. Ulrich Gernert (ZELM1, TU Berlin) for support regarding scanning electron microscopy, Dr. Virginia Merk (HU), Dr. Merwe Buurman, and Prof. Dr. Ulrich Panne (BAM) for fruitful discussion. Financial support of the research by DFG GSC 1013 SALSA (fellowship to Z.Z.), ERC grant no 259432 (J.K.) and DFG FOR 2177 InCheM (J.K.) is gratefully acknowledged.
- Resource Type
- Journal article
- Language
- English
- Academic Unit
- Drexel University
- Web of Science ID
- WOS:000518866600016
- Scopus ID
- 2-s2.0-85078783233
- Other Identifier
- 991021860671804721
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- Collaboration types
- Domestic collaboration
- International collaboration
- Web of Science research areas
- Chemistry, Physical
- Engineering, Chemical