Microwave-assisted synthesis of ZnO–graphene composite for photocatalytic reduction of Cr(vi)

Graphene based metal and metal oxide nanocomposites: synthesis, properties and their applications

“…Fig. 10 194 In the latter case, the reaction was carried out in aqueous medium assisted by MWI. The HRG sheets act not only as precursor of graphene but also as a template for the growth of ZnS nanospheres.…”

To investigate opulence of graphene in ZnO/graphene nanocomposites based dye sensitized solar cells

“…Under irradiation, the photoinjected electrons on the conduction band of ZnO are trapped by the graphene sheets that could efficiently separate the photo-induced electrons and prevents the charge recombination thereby enhancing the photocatalytic performance of DSSCs based on ZGR nanocomposite photoanodes. Actually, the electronic interaction between ZnO and graphene improves the charge separation efficiency of these ZGR nanocomposites [27][28][29]. However, to generate a high photocurrent density, the optimum concentration of graphene is a key factor and need to be considered.…”

Environmental applications using graphene composites: water remediation and gas adsorption

“…83 The ZnO-rGO composite exhibited an enhanced photocatalytic performance in the reduction of Cr(VI) with a removal rate of 98% under UV light irradiation as compared with pure ZnO (58%) due to an increased light absorption intensity and range. The same group has additionally reported on the ZnO assisted photocatalytic reduction of GO, where the resulting composite material was likewise used in the photocatalytic reduction of Cr(VI).…”