Synthesis, crystal structure, and photocatalytic activity of the new three-layer aurivillius phases, Bi{sub 2}ASrTi{sub 2}TaO{sub 12} (A=Bi, La)

Journal Article · Mon Feb 15 00:00:00 EST 2010 · Journal of Solid State Chemistry

DOI:https://doi.org/10.1016/j.jssc.2009.11.018· OSTI ID:21372491

Zhenhua, Liang ^[1]; Huagui, Zheng ^[2]

---

1. Nanomaterial and Nanochemistry, Hefei National Laboratory for Physical Sciences at Microscale, University of Science and Technology of China, Hefei, Anhui 230026 (China)
2. Department of Chemistry, University of Science and Technology of China, Hefei, Anhui 230026 (China)

Two new three-layer Aurivillius phases Bi{sub 2}ASrTi{sub 2}TaO{sub 12} (A=Bi, La) have been synthesized. The detailed structure determination of Bi{sub 2}ASrTi{sub 2}TaO{sub 12} (A=Bi, La) performed by powder X-ray diffraction (XRD) and selected area electron microscopy (SAED) shows that they all crystallize in the space group I/4mmm. UV-visible diffuse reflection spectrum of the prepared Bi{sub 2}ASrTi{sub 2}TaO{sub 12} (A=Bi, La) indicates that it had absorption in the ultraviolet (UV) region. The photocatalytic activity of the Bi{sub 2}ASrTi{sub 2}TaO{sub 12} (A=Bi, La) powders was evaluated by degradation of rhodamine B (RB) molecules in water under UV light irradiation. The results showed that Bi{sub 2}ASrTi{sub 2}TaO{sub 12} (A=Bi, La) has high photocatalytic activity at room temperature. Therefore, the preparation and properties studies of Bi{sub 2}ASrTi{sub 2}TaO{sub 12} (A=Bi, La) with a three-layer Aurivillius structure suggest potential future applications in photocatalysis. - Graphical abstract: Two new three-layer Aurivillius phases Bi{sub 2}ASrTi{sub 2}TaO{sub 12} (A=Bi, La) have been synthesized by a conventional solid state reaction method. And this is the crystal structure of the three-layer Aurivillius phases, Bi{sub 2}ASrTi{sub 2}TaO{sub 12}.

• OSTI ID: 21372491
• Journal Information: Journal of Solid State Chemistry, Vol. 183, Issue 2; Other Information: DOI: 10.1016/j.jssc.2009.11.018; PII: S0022-4596(09)00547-7; Copyright (c) 2009 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.; ISSN 0022-4596
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
ABSORPTION
BISMUTH COMPOUNDS
CRYSTAL STRUCTURE
ELECTRON DIFFRACTION
ELECTRON MICROSCOPY
IRRADIATION
LANTHANUM COMPOUNDS
LAYERS
OXIDES
PEROVSKITE
PHOTOCATALYSIS
SPACE GROUPS
STRONTIUM COMPOUNDS
SYNTHESIS
TANTALUM COMPOUNDS
TEMPERATURE RANGE 0273-0400 K
TITANIUM COMPOUNDS
ULTRAVIOLET RADIATION
X-RAY DIFFRACTION
ALKALINE EARTH METAL COMPOUNDS
CATALYSIS
CHALCOGENIDES
COHERENT SCATTERING
DIFFRACTION
ELECTROMAGNETIC RADIATION
MICROSCOPY
MINERALS
OXIDE MINERALS
OXYGEN COMPOUNDS
PEROVSKITES
RADIATIONS
RARE EARTH COMPOUNDS
REFRACTORY METAL COMPOUNDS
SCATTERING
SORPTION
SYMMETRY GROUPS
TEMPERATURE RANGE
TRANSITION ELEMENT COMPOUNDS