Preparación de nanopartículas de plata en ausencia de polimeros estabilizantes

Química Nova

Ángela B. Sifontes²  Luis Melo²  Carlos Maza²  Juan J. Mendes²  Marta Mediavilla²  Joaquín L. Brito¹  Tamara Zoltan¹  Alberto Albornoz¹ 

[1] ,Universidad Central de Venezuela Facultad de Ingeniería Caracas,Venezuela

关键词: nanoparticles;    polyol method;    silver;   

DOI  :  10.1590/S0100-40422010000600009

来源: SciELO

【 摘 要 】

Silver nanoparticles (AgNPs) were prepared by means of the polyol method in the absence of stabilizing polymers. To accomplish this objective, AgNO3 was added to ethylene glycol in the presence of NaOH (1 mol.L-1), the suspension formed was irradiated with a microwave source for 60 seconds at a power of 465 watts. It was found that under these conditions AgNPs of sizes between 4-18 nm are formed. Also the results indicate that part of the ethylene glycol is oxidized to carbonyl compounds that reduce the Ag+. These organic compounds are adsorbed on the surfaces of AgNPs, forming a protective film that prevents their aggregation.

【 授权许可】

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