Search

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. [ABSTRACT FROM AUTHOR]

Abstract: A facile hydrothermal method has been developed to grow large-scale ZnO nanorods arrays (NRs) on boron-doped diamond (BDD) films at a low temperature of 95°C. The ZnO nanorods with average diameter of 200nm are single-crystal hexagonal structure and grow along the [001] direction. The thin ZnO film plays a key role in driving the nucleation and growth of the ZnO NRs on BDD films. It has been demonstrated that the ZnO nanorods are grown vertically on diamond facets, and this growth behavior is independent of types of diamond facets. The growth mechanism and room temperature photoluminescence (PL) properties of ZnO NRs are investigated. [Copyright &y& Elsevier]

Abstract: Boron doped ZnO nanorods were fabricated by hydrothermal technique on silicon substrate covered with a ZnO seed layer. It is found that the concentration of boric acid in the reaction solution plays a key role in varying the morphology and properties of the products. The growth rate along the [0001] orientation (average size in diameter) of the doped ZnO nanorods decreased (increased) with the increase of boric acid concentration. Based on the results of XRD, EDX and XPS, it is demonstrated that the boron dopants tend to occupy the octahedral interstice sites. The photoluminescence of the ZnO nanorods related to boron doping are investigated. [Copyright &y& Elsevier]