Synthesis and Photocatalytic Properties of HTaWO_6 Intercalated with Oxide Materials

摘要

Transition metal oxides (TiO_2, MnO_2, Cr_2O_3, Fe_2O_3, NiO, CuO) were intercalated into the interlayer of HTaWO_6 by (1) hydrothermal reaction on HTaWO_6 with 1 M soluble metal nitrate aqueous solution at 130℃ for 12 h followed by calcination at 250℃ for 3 h and (2) sol reaction on HTaWO_6-C_3H_7NH_2 precursor with metal oxide sol, followed by UV irradiation. The gallery height of transition metal oxide in the interlayer of HTaWO_6 is changed from 0.42 to 0.71 nm, the band gap energies of intercalated materials are less than 3 eV. HTaWO_6/Cr_2O_3, HTaWO_6/MnO, HTaWO_6/Fe_2O_3, HTaWO_6/NiO and HTaWO_6/CuO porous materials are capable of photocatalytic decomposing methyl orange, and the photocatalytic activity of HTaWO_6/TiO_2 is superior to that of unsupported TiO_2.