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Title: Simple size-controlled synthesis of Au nanoparticles and their size-dependent catalytic activity

The controlled preparation of Au nanoparticles (NPs) in the size range of 6 to 22 nm is explored in this study. The Au NPs were prepared by the reduction of tetrachloroauric acid using maltose in the presence of nonionic surfactant Tween 80 at various concentrations to control the size of the resulting Au NPs. With increasing concentration of Tween 80 a decrease in the size of produced Au NPs was observed, along with a significant decrease in their size distribution. The size-dependent catalytic activity of the synthesized Au NPs was tested in the reduction of 4-nitrophenol with sodium borohydride, resulting in increasing catalytic activity with decreasing size of the prepared nanoparticles. Eley-Rideal catalytic mechanism emerges as the more probable, in contrary to the Langmuir-Hinshelwood mechanism reported for other noble metal nanocatalysts.
Authors:
ORCiD logo [1] ;  [1] ;  [1] ;  [1] ;  [2] ;  [3] ; ORCiD logo [1]
  1. Palacky University, Olomouc (Czech Republic). Department of Physical Chemistry, Regional Centre of Advanced Technologies and Materials, Faculty of Scienc
  2. Argonne National Lab. (ANL), Argonne, IL (United States). Materials Science Division
  3. Argonne National Lab. (ANL), Argonne, IL (United States). Materials Science Division; Univ. of Chicago, IL (United States). Institute for Molecular Engineering
Publication Date:
Grant/Contract Number:
AC02-06CH11357
Type:
Accepted Manuscript
Journal Name:
Scientific Reports
Additional Journal Information:
Journal Volume: 8; Journal Issue: 1; Journal ID: ISSN 2045-2322
Publisher:
Nature Publishing Group
Research Org:
Argonne National Lab. (ANL), Argonne, IL (United States)
Sponsoring Org:
USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22). Materials Sciences & Engineering Division
Country of Publication:
United States
Language:
English
Subject:
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY; 36 MATERIALS SCIENCE; 77 NANOSCIENCE AND NANOTECHNOLOGY; Heterogeneous catalysts; Nanoparticles
OSTI Identifier:
1426503

Suchomel, Petr, Kvitek, Libor, Prucek, Robert, Panacek, Ales, Halder, Avik, Vajda, Stefan, and Zboril, Radek. Simple size-controlled synthesis of Au nanoparticles and their size-dependent catalytic activity. United States: N. p., Web. doi:10.1038/s41598-018-22976-5.
Suchomel, Petr, Kvitek, Libor, Prucek, Robert, Panacek, Ales, Halder, Avik, Vajda, Stefan, & Zboril, Radek. Simple size-controlled synthesis of Au nanoparticles and their size-dependent catalytic activity. United States. doi:10.1038/s41598-018-22976-5.
Suchomel, Petr, Kvitek, Libor, Prucek, Robert, Panacek, Ales, Halder, Avik, Vajda, Stefan, and Zboril, Radek. 2018. "Simple size-controlled synthesis of Au nanoparticles and their size-dependent catalytic activity". United States. doi:10.1038/s41598-018-22976-5. https://www.osti.gov/servlets/purl/1426503.
@article{osti_1426503,
title = {Simple size-controlled synthesis of Au nanoparticles and their size-dependent catalytic activity},
author = {Suchomel, Petr and Kvitek, Libor and Prucek, Robert and Panacek, Ales and Halder, Avik and Vajda, Stefan and Zboril, Radek},
abstractNote = {The controlled preparation of Au nanoparticles (NPs) in the size range of 6 to 22 nm is explored in this study. The Au NPs were prepared by the reduction of tetrachloroauric acid using maltose in the presence of nonionic surfactant Tween 80 at various concentrations to control the size of the resulting Au NPs. With increasing concentration of Tween 80 a decrease in the size of produced Au NPs was observed, along with a significant decrease in their size distribution. The size-dependent catalytic activity of the synthesized Au NPs was tested in the reduction of 4-nitrophenol with sodium borohydride, resulting in increasing catalytic activity with decreasing size of the prepared nanoparticles. Eley-Rideal catalytic mechanism emerges as the more probable, in contrary to the Langmuir-Hinshelwood mechanism reported for other noble metal nanocatalysts.},
doi = {10.1038/s41598-018-22976-5},
journal = {Scientific Reports},
number = 1,
volume = 8,
place = {United States},
year = {2018},
month = {3}
}

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