Preparation, Characterization and Photocatalytic Activity of Nickel-doping Hydroxyl-Zr Pillared Titanate

Abstract

A single layer of titanate was prepared by high temperature solid phase hydrothermal synthesis. To fabricate mesoporous nanocomposite-Ni-doped Zr-pillared titanate(NZPT), the exfoliated layered titanate in aqueous solution was reassembled in the presence of the hydroxyl-Zr oligocations and nickel cation by exfoliation-restacking technology. The crystal structure, chemical composition, microstructure and pore structure were characterized by powder X-ray diffraction, N2 asbsorption analysis, scanning electron microscope/transmission electron microscopy and UV-vis spectra. The influence of doping Ni cations on the catalytic activity of the Zr-pillared composites (ZPT) was investigated by the degradation of acid red G under ultraviolet and visible radiation. The results show that the Ni-containing pillared nanocomposite exhibits higher photocatalytic activities than that of ZPT without doping Ni cations, and the NZPT-0.10 has the best photocatalytic activities of them, which are based on the bigger specific surface area and electronic coupling between the host and the guest species.

Keywords

• pillared material
• nickel-doped
• mesoporous
• exfoliation-restacking
• photocatalytic