RGO–TiO2–ZnO composites: Synthesis, characterization, and application to photocatalysis

New green synthesized reduced graphene oxide–ZrO2 composite as high performance photocatalyst under sunlight

“…As per the earlier reported data, the order for the conduction band offset is ZrO 2 (À1.16) > rGO (À4.4), that shows conduction band for ZrO 2 NM is less negative than compared to rGO. 71 Hence under the sunlight irradiation, system absorbs sufficient amount of energy from irradiated light.…”

Synthesis and Characterization of Nanocomposite of Functionalized Graphene Oxide with Multi Core-Shell Fe3O4-ZnO-TiO2 Nanoparticles

“…However, there are still a lot of unsolved issues in designing and fabricating core-shell nanoparticle structures [19][20][21][22][23]. Studies have shown that TiO2 and ZnO not only are good photocatalytic materials, but also can be coated on Fe3O4 very easily [14,[24][25][26][27][28][29][30][31]. There is significant literature available on graphene, Fe3O4, ZnO and TiO2, as well as the combination of graphene with photocatalytic semiconductor and metal oxides, such as TiO2, ZnO, SnO2, Fe2O3, MnO2 and CdS [1,4,[6][7][8][9][10][11].…”

Construction of Ag-modified TiO2/ZnO heterojunction nanotree arrays with superior photocatalytic and photoelectrochemical properties

“…21 Furthermore, Johra et al found that the TiO 2 /ZnO heterojunction was better than that of ZnO alone. 22 The coupled synergistic effect of the metal oxide TiO 2 and ZnO can change their electronic state to produce photogenerated charge carriers that facilitate the separation of the electron pairs. 23 As a result, the electrons are transferred from the conduction band (CB) of ZnO to the CB of TiO 2 , 24 likewise, holes can be transferred from the valence band (VB) of TiO 2 to VB of ZnO.…”