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

Abstract

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.

Authors:
ORCiD logo [1];  [1]; ORCiD logo [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)
Publication Date:
Research Org.:
Brookhaven National Lab. (BNL), Upton, NY (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22)
OSTI Identifier:
1430877
Report Number(s):
BNL-203433-2018-JAAM
Journal ID: ISSN 1463-9076; PPCPFQ; TRN: US1802763
Grant/Contract Number:  
SC0012704; FG02-03ER15476; SC0012335
Resource Type:
Accepted Manuscript
Journal Name:
Physical Chemistry Chemical Physics. PCCP (Print)
Additional Journal Information:
Journal Name: Physical Chemistry Chemical Physics. PCCP (Print); Journal Volume: 20; Journal Issue: 3; Journal ID: ISSN 1463-9076
Publisher:
Royal Society of Chemistry
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; 37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY

Citation Formats

Wu, Qiyuan, Cen, Jiajie, Zhao, Yue, Tong, Xiao, Li, Yuanyuan, Frenkel, Anatoly I., Zhao, Shen, and Orlov, Alexander. A comprehensive study of catalytic, morphological and electronic properties of ligand-protected gold nanoclusters using XPS, STM, XAFS, and TPD techniques. United States: N. p., 2017. Web. doi:10.1039/C7CP06376H.
Wu, Qiyuan, Cen, Jiajie, Zhao, Yue, Tong, Xiao, Li, Yuanyuan, Frenkel, Anatoly I., Zhao, Shen, & Orlov, Alexander. A comprehensive study of catalytic, morphological and electronic properties of ligand-protected gold nanoclusters using XPS, STM, XAFS, and TPD techniques. United States. doi:10.1039/C7CP06376H.
Wu, Qiyuan, Cen, Jiajie, Zhao, Yue, Tong, Xiao, Li, Yuanyuan, Frenkel, Anatoly I., Zhao, Shen, and Orlov, Alexander. Fri . "A comprehensive study of catalytic, morphological and electronic properties of ligand-protected gold nanoclusters using XPS, STM, XAFS, and TPD techniques". United States. doi:10.1039/C7CP06376H. https://www.osti.gov/servlets/purl/1430877.
@article{osti_1430877,
title = {A comprehensive study of catalytic, morphological and electronic properties of ligand-protected gold nanoclusters using XPS, STM, XAFS, and TPD techniques},
author = {Wu, Qiyuan and Cen, Jiajie and Zhao, Yue and Tong, Xiao and Li, Yuanyuan and Frenkel, Anatoly I. and Zhao, Shen and Orlov, Alexander},
abstractNote = {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.},
doi = {10.1039/C7CP06376H},
journal = {Physical Chemistry Chemical Physics. PCCP (Print)},
number = 3,
volume = 20,
place = {United States},
year = {2017},
month = {12}
}

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