Abstract
Bi3+-containing compounds with Aurivillius-like structure have been intensively investigated for multifunctional applications. In this work, a new Aurivillius-like semiconductor Bi9P2O18Cl was prepared via sol-gel routine combined with solid-state reaction method. XRD Rietveld refinement was conducted to investigate the detailed structural characteristics. This is a typical Aurivillius oxide semiconductor with high polarization ability. The optical absorption, band structure, luminescence and decay lifetimes were reported. Bi9P2O18Cl has a band energy of 2.58 eV characterized with an indirect transition nature. To detect its photochemical activities, the degradation of Rhodamine B (RhB) by Bi9P2O18Cl was studied. The results show that Bi9P2O18Cl has a strong ability to harvest visible-light. The luminescence is not efficient under UV or near UV excitation. However, Bi9P2O18Cl shows efficiently photocatalytic abilities under visible light irradiation. The results could be reliable reference in the booming development of Aurivillius Bi-oxide semiconductors.
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