Abstract
Brookite TiO2 nanoparticles were synthesized by hydrothermal method and characterized by X-ray powder diffraction (XRD), diffuse reflectance UV–Visible spectroscopy (DRUV), and scanning electron microscopy (SEM). The obtained particles were spherical in shape with the diameter of about ~10 nm under the hydrothermal temperature of 175 °C. The photocatalytic performance of brookite was investigated in the photodegradation of dyes (rhodamine B and rose bengal) under UV-A radiation by low-power lamp. The activity of brookite and the photodegradation efficiency of dyes were estimated using a UV–Visible spectrophotometer and a total organic carbon (TOC) analyzer. Compared to anatase and rutile prepared by the similar synthesis procedure, brookite is highly active in terms of decolourization, aromatic ring opening, and mineralization.
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