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

Suchomel, Petr; Kvitek, Libor; Prucek, Robert; Panacek, Ales; Halder, Avik; Vajda, Stefan; Zboril, Radek

doi:10.1038/s41598-018-22976-5

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

Journal Article · Thu Mar 15 00:00:00 EDT 2018 · Scientific Reports

DOI:https://doi.org/10.1038/s41598-018-22976-5· OSTI ID:1426503

^[1]; Kvitek, Libor ^[1]; Prucek, Robert ^[1]; Panacek, Ales ^[1]; Halder, Avik ^[2]; Vajda, Stefan ^[3]; ^[1]

Palacky University, Olomouc (Czech Republic). Department of Physical Chemistry, Regional Centre of Advanced Technologies and Materials, Faculty of Scienc
Argonne National Lab. (ANL), Argonne, IL (United States). Materials Science Division
Argonne National Lab. (ANL), Argonne, IL (United States). Materials Science Division; Univ. of Chicago, IL (United States). Institute for Molecular Engineering

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.

View Accepted Manuscript (DOE)

Research Organization:: Argonne National Laboratory (ANL), Argonne, IL (United States)

Sponsoring Organization:: USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22). Materials Sciences & Engineering Division

Grant/Contract Number:: AC02-06CH11357

OSTI ID:: 1426503

Journal Information:: Scientific Reports, Journal Name: Scientific Reports Journal Issue: 1 Vol. 8; ISSN 2045-2322

Publisher:: Nature Publishing GroupCopyright Statement

Country of Publication:: United States

Language:: English

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