Synthesis of Se-doped InOOH as efficient visible-light-active photocatalysts

One-step solvothermal synthesis is proposed for the preparation of nanocrystalline InOOH doped with Se2+ ions. The structural properties of these products are investigated using X-ray powder diffraction (XRD), electron microscopy, UV–vis diffusive reflectance spectroscopy, and X-ray photoemission spectroscopy (XPS). Doping of Se2+ ions makes the absorption edge of the InOOH shift into the visible region. Effective photodegradation of the methylene blue aqueous solution is achieved under visible light irradiation (λ > 400 nm), revealing its potential applicability in air and water purifications.