Preparation of silver nanoparticles in the absence of polymer stabilizers

Quimica nova

Brito, Joaquín L.¹  Albornoz, Alberto¹  Zoltan, Tamara¹  Sifontes, Ángela B.²  Mendes, Juan J.²  Mediavilla, Marta²  Melo, Luis²  Maza, Carlos² 

[1] Instituto Venezolano de Investigaciones Científicas, Venezuela;Universidad Central de Venezuela, Caracas, Venezuela

关键词: nanoparticles;    polyol method;    silver.;   

DOI  :  10.1590/S0100-40422010000600009

学科分类：化学（综合）

来源: Sociedade Brasileira de Quimica

【 摘 要 】

Silver nanoparticles(AgNPs) were prepared by means of the polyol method in the absence of stabilizingpolymers. To accomplish this objective, AgNO3 was added to ethyleneglycol in the presence of NaOH (1 mol.L-1), the suspension formedwas 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 areformed. Also the results indicate that part of the ethylene glycol is oxidizedto carbonyl compounds that reduce the Ag+. These organic compoundsare adsorbed on the surfaces of AgNPs, forming a protective film that preventstheir aggregation.

【 授权许可】

CC BY