Highly efficient preparation of ZnO nanorods decorated reduced graphene oxide nanocomposites

A one-step method for the synthesis of zinc oxide/reduced graphene oxide (ZnO/rGO) nanocomposites by a hydrothermal technique is reported. This simple method involves a hydrothermal treatment of a solution comprising graphene oxide (GO), Zn(CH3COO)2.2H2O, NaOH and NH3.H2O. The concentration of GO as a starting material plays an important role in the density distribution of ZnO nanorods on the rGO sheets and on the percentage of the formation of ZnO/rGO nanocomposites. The resulting rod-like ZnO nanoparticles formed on the rGO sheets, in high density, has a potential in the gas sensing application.

Graphical abstractHigh density zinc oxide nanorods decorated reduced graphene oxide nanocomposites.Figure optionsDownload full-size imageDownload as PowerPoint slideHighlights► ZnO/rGO nanocomposites were prepared by a simple hydrothermal route. ► High density of ZnO nanorods decorated reduce graphene oxide were obtained. ► Efficient formation of ZnO/rGO was greatly influenced by GO concentration. ► rGO sheets displayed excellent role to anchor zinc oxide nanorods.