Structural features and photocatalytic performance of H₃Nb₆O₁₉^5- intercalated Ni-Ti-LDHs

Abstract

Ni-Ti-layered double hydroxides (Ni-Ti-LDHs) have been synthesized by co-precipitation and modified by H₃Nb₆O₁₉^5-polyanion. The as-prepared samples have been characterized by power X-ray diffraction, scanning electron microscopy, transmission electron microscopy and Fourier-transform infrared and UV-visible diffuse reflectance spectroscopy. The photocatalytic performance has been evaluated by oxidation of ethyl mercaptan as a probe molecule. The results show that there is an obvious interaction between H₃Nb₆O₁₉^5<b>-</b> and laminates, and interlayer H₃Nb₆O₁₉^5<b>-</b> polyanion enhances the adsorption and photocatalytic performance of Ni-Ti-LDHs for oxidation of ethyl mercaptan.