In situ surface-enhanced Raman scattering shows ligand-enhanced hot electron harvesting on silver, gold, and copper nanoparticles

Zhang Z, Li Y, Frisch J, Bär M, Rappich J, Kneipp J (2020)

Publication Type: Journal article

Publication year: 2020

Journal

Journal of Catalysis Elsevier

Book Volume: 383

Pages Range: 153-159

DOI: 10.1016/j.jcat.2020.01.006

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.

Authors with CRIS profile

Marcus Bär Professur für Röntgenspektroskopie (HIERN)

Involved external institutions

Helmholtz-Zentrum Berlin für Materialien und Energie (HZB) DE Germany (DE) Humboldt-Universität zu Berlin DE Germany (DE)

How to cite

APA:

Zhang, Z., Li, Y., Frisch, J., Bär, M., Rappich, J., & Kneipp, J. (2020). In situ surface-enhanced Raman scattering shows ligand-enhanced hot electron harvesting on silver, gold, and copper nanoparticles. Journal of Catalysis, 383, 153-159. https://dx.doi.org/10.1016/j.jcat.2020.01.006

MLA:

Zhang, Zhiyang, et al. "In situ surface-enhanced Raman scattering shows ligand-enhanced hot electron harvesting on silver, gold, and copper nanoparticles." Journal of Catalysis 383 (2020): 153-159.

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