Significantly enhanced photocatalytic performance of ZnO via graphene hybridization and the mechanism study

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

“…455 Xu et al reported the photocatalytic performance of HRG/ZnO nanocomposites, which were prepared by reducing surface bound GO on ZnO NPs with hydrazine for the degradation of organic dyes. 456 The hybridization of graphene and ZnO increased the photocatalytic efficiency of ZnO by a factor of ~5 (with 2.0 wt% of graphene).…”

Environmental applications using graphene composites: water remediation and gas adsorption

“…Likewise Xu et al have shown that rGO hybridized with ZnO can be used as an efficient photocatalyst. 97 The authors showed that a small amount of rGO (2 wt%) improves the photocatalytic activity 4 times that of pristine ZnO. These reports which show that graphene inclusion in composites can change the nanoparticles adsorption range are very important, as the majority of sunlight lies in the visible region and is inaccessible by certain bare nanoparticles.…”

Controlled periodic illumination in semiconductor photocatalysis

“…Previous studies have shown that quantum yields in dilute aqueous suspensions are usually below ~10% while quantum yields of oxidation of organic species in the gas phase exceed 50% under weak UV illumination [7,12,29]. Various methods of improving efficiency have been studied, for example doping of catalysts to enhance efficiency by inhibiting charge carrier recombination or improving light absorption is well reported in the literature [30][31][32][33][34]. The introduction of an extra electric field across the semiconductor photocatalyst to enhance the photocatalytic efficiency has been demonstrated [35].…”