Facile synthesis of Co/RGO nanocomposite for methylene blue dye removal

In the present study, we report a facile and efficient method for the anchoring of cobalt nanoparticles (Co NPs) on reduced graphene oxide (RGO) sheets in presence of cationic surfactant cetyltrimethyl ammonium bromide (CTAB) and dispersing agent polyvinylpyrrolidone (PVP). Co NPs were decorated on...

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Bibliographic Details
Main Authors: Krishna, Rahul, Fernandes, Diana M., Dias, Catarina, Freire, Cristina, Ventura, João, Titus, Elby
Format: Conference Proceeding
Language:English
Subjects:
Co nanoparticles
Electrical conductivity
Methylene blue dye
Reduced graphene oxide
Sodium borohydride
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Summary:In the present study, we report a facile and efficient method for the anchoring of cobalt nanoparticles (Co NPs) on reduced graphene oxide (RGO) sheets in presence of cationic surfactant cetyltrimethyl ammonium bromide (CTAB) and dispersing agent polyvinylpyrrolidone (PVP). Co NPs were decorated on RGO by the simultaneous reduction of Co2+ ions and graphene oxide (GO) under reducing condition of sodium borohydride (NaBH4) at room temperature (RT). The formation Co NPs and the reduction of GO sheets was confirmed by the X-ray diffraction (XRD) technique. The surface morphology was characterized by scanning electron microscopy (SEM) technique. The catalytic activity of Co/RGO nanocomposites was investigated for removal of methylene blue (MB) dye from water. Moreover, I/V characteristics of Co/RGO showed remarkable increment in current value compare to GO under applied bias range of -10 to + 10 V at RT (with typical on/off the resistive current), suggests their use for nanoelectronic device fabrication also.
ISSN:2214-7853
2214-7853
DOI:10.1016/j.matpr.2016.06.031