Efficient photocatalyst based on ZnO nanorod arrays/p-type boron-doped-diamond heterojunction

The ZnO nanorod arrays (NRs) have been fabricated on p -type boron-doped diamond (BDD) substrate by hydrothermal method. It was demonstrated that the density and diameter of the ZnO NRs can be effectively controlled by adjusting the reactant concentration. Photocatalytic activity of the fabricated ZnO NRs/ p -BDD heterojunction was investigated for the degradation of methyl orange dye and the results indicated that diameter and density of ZnO NRs play a very important role in photocatalytic degradation. Furthermore, the ZnO NRs/ p -BDD heterostructure photocatalysts are easily recycled and reused.