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Gold Nanoparticles Stabilized by Sulfonated‐Imidazolium Salts as Promising Catalyst in Water
Author(s) -
Monti Gustavo A.,
Correa N. Mariano,
Falcone R. Darío,
Silbestri Gustavo F.,
Moyano Fernando
Publication year - 2019
Publication title -
chemistryselect
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.437
H-Index - 34
ISSN - 2365-6549
DOI - 10.1002/slct.201903396
Subject(s) - thermogravimetric analysis , catalysis , nanoparticle , ligand (biochemistry) , colloidal gold , hydrocarbon , chemistry , characterization (materials science) , materials science , polymer chemistry , chemical engineering , organic chemistry , nanotechnology , biochemistry , receptor , engineering
We present the total characterization (by FT‐IR and NMR spectroscopies) of gold nanoparticles (Au‐NPs) stabilized by different sulfonated‐imidazolium salts. Also, thermogravimetric analysis (TGA) was used in order to evaluate the degree of the Au‐NPs coverage. Our results show how the orientation of the sulfonated‐imidazolium salts and, the interaction of the hydrocarbon chain with the Au‐NP surface are responsible for the strength of the ligand‐Au‐NP interaction. The developed procedure is easy, fast and reproducible to carry out different catalytic organic reactions in water. Our preliminary studies indicate that Au‐NPs synthesized are active and recyclable catalysts for the reduction of aromatic nitro compounds at room temperature in water.