Gold Nanoparticles Stabilized by Sulfonated-Imidazolium Salts as Promising Catalyst in Water

MONTI, GUSTAVO A.; SILBESTRI, GUSTAVO F.; FALCONE, R. DARÍO; CORREA, N. MARIANO; MOYANO, FERNANDO

ChemistrySelect

Wiley-Blackwell Publishing Ltd

Año: 2019 vol. 4 p. 13496 - 13502

2365-6549

We present the total characterization (by FT-IR and NMRspectroscopies) of gold nanoparticles (Au-NPs) stabilized bydifferent sulfonated-imidazolium salts. Also, thermogravimetricanalysis (TGA) was used in order to evaluate the degree of theAu-NPs coverage. Our results show how the orientation of thesulfonated-imidazolium salts and, the interaction of the hydrocarbon chain with the Au-NP surface are responsible for thestrength of the ligand-Au-NP interaction. The developedprocedure is easy, fast and reproducible to carry out differentcatalytic organic reactions in water. Our preliminary studiesindicate that Au-NPs synthesized are active and recyclablecatalysts for the reduction of aromatic nitro compounds atroom temperature in water.