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4684061 
Journal Article 
Green synthesis of silver nanoparticles in oil-in-water microemulsion and nano-emulsion using geranium leaf aqueous extract as a reducing agent 
Dario Rivera-Rangel, R; Pilar Gonzalez-Munoz, M; Avila-Rodriguez, M; Alejandra Razo-Lazcano, T; Solans, C 
2018 
Yes 
Colloids and Surfaces A: Physicochemical and Engineering Aspects
ISSN: 0927-7757 
536 
60-67 
WOS:000417065700009 
A green synthesis of silver nanoparticles was developed, using a low-toxic system of microemulsion and nano emulsion with castor oil as the oily phase, Brij 96 V and 1,2-hexanediol as the surfactant and co-surfactant respectively. Geranium (P. hortorum) leaf aqueous extract was employed as a reducing agent. The content and concentration of a metallic precursor and geranium leaf extract (GLE) in the systems used makes it possible to obtain different sizes of silver nanoparticles from 25 to 150 nm. The characterization by FTIR and Z potential shows that the biomolecules of the plant extract act as a reducing and capping agent, giving negative charges to the nanoparticle surface. The present study represents a contribution to the green synthesis of silver nano particles that can be extended to other metals. 
Plant extract; Silver nanoparticles; Microemulsion; Nano-emulsion; Green synthesis 
OPPT
• 1,2-Hexanediol
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