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

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

ChemistrySelect

Wiley-Blackwell

Año: 2019 vol. 4 p. 13496 - 13502

2365-6549

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 theAu-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.