A series of Ti species pillared HNbMoO6 composites with different Ti/Mo ratios were prepared via an intercalation–pillaring route. The effect of Ti species on the photocatalytic performance of HNbMoO6 and the reason were investigated by means of physicochemical methods such as powder X-ray diffraction (XRD), scanning electron microscopy (SEM), energy dispersive X-ray spectroscopy (EDS), N2 adsorption–desorption isotherms, laser Raman spectroscopy (LRS) and UV–Vis diffuse reflectance spectroscopy (UV–Vis DRS). The results showed that the effects of Ti species dosage on the disperse state, the interaction model, spectral response characteristic and photocatalytic performance were significant. When the Ti/Mo ratio was less than 1, Ti species were uniformly dispersed on the interlayer of HNbMoO6, and presented the obvious interaction with the host laminates. The specific surface area of the as-prepared Ti-HNbMoO6 (with Ti/Mo ratio 1) was 4 times than that of the host material. The narrower band gap and more excellent photocatalytic performance of T1-HNbMoO6 were derived from the obvious synergistic effect between the host and the guest.
Applied Physics A: Materials Science Processing – Springer Journals
Published: Mar 12, 2018
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