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A comprehensive study of catalytic, morphological and electronic properties of ligand-protected gold nanoclusters using XPS, STM, XAFS, and TPD techniques

Journal Article · · Physical Chemistry Chemical Physics. PCCP
DOI:https://doi.org/10.1039/C7CP06376H· OSTI ID:1430877
 [1];  [1];  [2];  [3];  [1];  [4];  [5];  [1]
  1. Stony Brook Univ., NY (United States). Department of Material Science and Chemical Engineering
  2. Stony Brook Univ., NY (United States). Department of Chemistry
  3. Brookhaven National Lab. (BNL), Upton, NY (United States). Center for Functional Nanomaterials
  4. Stony Brook Univ., NY (United States). Department of Material Science and Chemical Engineering ; Brookhaven National Lab. (BNL), Upton, NY (United States). Division of Chemistry
  5. Energy & Environment, Southern Research, Durham (United States)
+ Show Author Affiliations

Ultra-small gold nanoclusters were synthesized via a ligand exchange method and deposited onto different TiO2 supports to study their properties. STM imaging revealed that the as-synthesized gold nanoclusters had 2-D morphology consisting of monolayers of gold atoms. In conclusion, subsequent XPS, XAFS, and CO oxidation TPD results indicated that heat treatments of gold clusters at different temperatures significantly altered their electronic and catalytic properties due to ligand deprotection and cluster agglomeration.

Research Organization:
Brookhaven National Laboratory (BNL), Upton, NY (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22)
Grant/Contract Number:
SC0012704; FG02-03ER15476
OSTI ID:
1430877
Report Number(s):
BNL--203433-2018-JAAM
Journal Information:
Physical Chemistry Chemical Physics. PCCP, Journal Name: Physical Chemistry Chemical Physics. PCCP Journal Issue: 3 Vol. 20; ISSN 1463-9076; ISSN PPCPFQ
Publisher:
Royal Society of ChemistryCopyright Statement
Country of Publication:
United States
Language:
English

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36 MATERIALS SCIENCE
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