info:eu-repo/semantics/article
Role of a cystine-based Gemini surfactant ligand in the synthesis of catalytic active silver nanoparticles
Fecha
2019-06Registro en:
Molina Torres, Maria Andrea; Pachón Gómez, Erica Marcela; Fernández, Mariana Adela; Veglia, Alicia Viviana; Pacioni, Natalia Lorena; Role of a cystine-based Gemini surfactant ligand in the synthesis of catalytic active silver nanoparticles; Elsevier Science; Journal of Molecular Liquids; 284; 6-2019; 110-116
0167-7322
CONICET Digital
CONICET
Autor
Molina Torres, Maria Andrea
Pachón Gómez, Erica Marcela
Fernández, Mariana Adela
Veglia, Alicia Viviana
Pacioni, Natalia Lorena
Resumen
We report the synthesis in water of colloidal silver nanoparticles (AgNP) using a Gemini lipoamino acid surfactant derived from cysteine as a capping agent. The Gemini surfactant interacts with the metal surface mainly in a monodentate vertical mode through the carboxylate group preserving intact the disulfide bond. These nanoparticles present catalytic activity to the reduction of p-nitrophenol, and the synthesis of AgNP under mild reduction conditions maintaining the seeds size. Also, the Gemini surfactant leads to anisotropic morphologies in the seed-mediated growth of AgNP@citrate seeds aided by the presence of bromide ions.