Fabrication and characterization of dendrimer-encapsulated monometallic Co nanoparticles

A series of cobalt (Co) nanoparticles were synthesized by employing PAMAM dendrimers with different generations (G 0.0–3.0) as templates and sodium borohydride as a reducing agent. Extensive characterizations of the products were done using TEM, FT-IR, VSM, TGA, and XPS. The magnetization curves have superparamagnetic non hysteric characteristic at lower fields and with nonsaturation characteristic at high fields. All XRD patterns indicate that amorphous structure of all products. The shake-up satellites are observed at higher energies of the XPS peaks.

Graphical abstractFigure optionsDownload full-size imageDownload as PowerPoint slideHighlights► A series of cobalt (Co) nanoparticles were synthesized by employing PAMAM dendrimers with different generations (G0.0–3.0) as templates and sodium borohydride as a reducing agent. ► All XRD patterns indicate that amorphous structure of all products. ► The magnetization curves have superparamagnetic non hysteric characteristic at lower fields and with nonsaturation characteristic at high fields. ► The shake-up satellites are observed at higher energies of the XPS peaks.