The pH effect of the precursor solutions on the phase, morphologies, and photocatalytic activity of Bi 2 MoO 6 synthesized by a hydrothermal reaction at 180°C for 20 h was investigated. X‐ray powder diffraction (XRD), Raman spectroscopy, Fourier transform infrared (FTIR) spectrometry, scanning electron microscopy (SEM), and transmission electron microscopy (TEM) revealed the presence of pure orthorhombic well‐crystallized γ ‐Bi 2 MoO 6 nanoplates, including the symmetric (A 1g ) and asymmetric (A 2u ) stretching vibrations of the MoO 6 octahedrons involving the motion of apical oxygen atoms. The photocatalytic activity of Bi 2 MoO 6 nanoplates at the pH 6 determined via the decomposition of rhodamine‐B (RhB) organic dye was the highest at 98.66% decolorization under Xe light irradiation.
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Phuruangrat et al. (2013) studied this question.