Abstract
In this study, hydrophilic-surfaced Cd2V2O7 microstructures were synthesized via a simple and efficient surfactant-assisted hydrothermal route using Cd(NO3)4·4H2O, NaVO3·2H2O and NaOH as the starting materials at pH 8 and various temperatures. The products were characterized by X-ray powder diffraction (XRD), Fourier Transform infrared (FT-IR) and ultraviolet–visible spectroscopes (UV–Vis), and scanning electron microscopy (SEM). SEM images illustrated the optimized material that synthesized at pH 8 and 180 and 200°C displays good dispersion of small-sized and the product consisted of a large amount of similar spherical superstructures with mean diameters of about 2–3μm in which an individual spherical particle composed of a large number of nanorods with a diameter about 60–80nm. A band gap of about 2.88–2.95eV was estimated by the diffuse reflectance spectroscopy (DRS) for as-synthesized samples, which can be appropriate for photocatalytic activity in the visible region of the solar spectrum as a semiconductor.
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