Remote controlled optical manipulation of bimetallic nanoparticle catalysts using peptides
Journal Article
·
· Catalysis Science and Technology
- Univ. of Miami, Coral Gables, FL (United States)
- Stony Brook Univ., NY (United States)
- Air Force Research Lab., Wright-Patterson Air Force Base, OH (United States)
- Stony Brook Univ., NY (United States); Brookhaven National Lab. (BNL), Upton, NY (United States)
- Univ. of Miami, Coral Gables, FL (United States); Univ. of Miami, Miami, FL (United States)
Bimetallic nanoparticles remain a promising avenue to achieve highly reactive catalysts. In this contribution, we demonstrate the use of a photoswitchable peptide for the production of PdAu bimetallic nanoparticles at a variety of Pd : Au ratios. Here, using this peptide, the biomolecular overlayer structure can be switched between two different conformations (cis vs. trans) via light irradiation, thus accessing two different surface structures. The composition and arrangement of the materials was fully characterized, including atomic-level analyses, after which the reactivity of the bimetallic materials was explored using the reduction of 4-nitrophenol as a model system. Using these materials, it was demonstrated that the reactivity was maximized for the particles prepared at a Pd : Au ratio of 1 : 3 and with the peptide in the cis conformation. Such results present routes to a new generation of catalysts that could be remotely activated for on/off reactivity as a function of the ligand overlayer conformation.
- Research Organization:
- Brookhaven National Laboratory (BNL), Upton, NY (United States)
- Sponsoring Organization:
- National Science Foundation; USDOE Office of Science (SC), Basic Energy Sciences (BES)
- Grant/Contract Number:
- SC0012704
- OSTI ID:
- 1787828
- Alternate ID(s):
- OSTI ID: 1771354
OSTI ID: 1783749
- Report Number(s):
- BNL--221633-2021-JAAM
- Journal Information:
- Catalysis Science and Technology, Journal Name: Catalysis Science and Technology Journal Issue: 7 Vol. 11; ISSN 2044-4753
- Publisher:
- Royal Society of ChemistryCopyright Statement
- Country of Publication:
- United States
- Language:
- English
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