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Title: Remote controlled optical manipulation of bimetallic nanoparticle catalysts using peptides

Journal Article · · Catalysis Science and Technology
DOI:https://doi.org/10.1039/d1cy00189b· OSTI ID:1787828
 [1];  [1];  [2];  [3];  [3];  [3]; ORCiD logo [4]; ORCiD logo [5]
  1. Univ. of Miami, Coral Gables, FL (United States)
  2. Stony Brook Univ., NY (United States)
  3. Air Force Research Lab., Wright-Patterson Air Force Base, OH (United States)
  4. Stony Brook Univ., NY (United States); Brookhaven National Lab. (BNL), Upton, NY (United States)
  5. Univ. of Miami, Coral Gables, FL (United States); Univ. of Miami, Miami, FL (United States)
+ Show Author Affiliations

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:
USDOE Office of Science (SC), Basic Energy Sciences (BES); National Science Foundation (NSF)
Grant/Contract Number:
SC0012704; SC0012335; CHE-1903649; CHE-1903576
OSTI ID:
1787828
Alternate ID(s):
OSTI ID: 1771354
Report Number(s):
BNL-221633-2021-JAAM
Journal Information:
Catalysis Science and Technology, Vol. 11, Issue 7; ISSN 2044-4753
Publisher:
Royal Society of ChemistryCopyright Statement
Country of Publication:
United States
Language:
English

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