skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Synthesis, crystal structure, and photocatalytic activity of a new two-layer Ruddlesden-Popper phase, Li{sub 2}CaTa{sub 2}O{sub 7}

Abstract

A new two-layer Ruddlesden-Popper phase Li{sub 2}CaTa{sub 2}O{sub 7} has been synthesized for the first time. The detailed structure determination of Li{sub 2}CaTa{sub 2}O{sub 7} performed by powder X-ray diffraction (XRD) and electron microscopy (ED) shows that it crystallizes in the space group Fmmm [a{approx}5.5153(1), b{approx}5.4646(1), c{approx}18.2375(3)A]. UV-visible diffuse reflection spectrum of the prepared Li{sub 2}CaTa{sub 2}O{sub 7} indicates that it had absorption in the UV region. The photocatalytic activity of the Li{sub 2}CaTa{sub 2}O{sub 7} powders was evaluated by degradation of RhB molecules in water under ultra visible light irradiation. The results showed that Li{sub 2}CaTa{sub 2}O{sub 7} has high photocatalytic activity at room temperature. Therefore, the preparation and properties studies of Li{sub 2}CaTa{sub 2}O{sub 7} with a two-layer Ruddlesden-Popper structure suggest potential future applications in photocatalysis. - Graphical abstract: Crystal structure of a two-layer Ruddlesden-Popper phase Li{sub 2}CaTa{sub 2}O{sub 7} A new two-layer Ruddlesden-Popper phase Li{sub 2}CaTa{sub 2}O{sub 7} has been synthesized for the first time. Li{sub 2}CaTa{sub 2}O{sub 7} crystallizes in the space group Fmmm determined by powder X-ray and electron diffraction. UV-visible diffuse reflection spectra and the photocatalytic degradation of RhB molecules in water under ultra visible light irradiation show that Li{sub 2}CaTa{sub 2}O{sub 7} ismore » a potential material in photocatalysis.« less

Authors:
 [1];  [1]; ; ;  [1];  [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)
Publication Date:
OSTI Identifier:
21128270
Resource Type:
Journal Article
Journal Name:
Journal of Solid State Chemistry
Additional Journal Information:
Journal Volume: 181; Journal Issue: 4; Other Information: DOI: 10.1016/j.jssc.2008.01.042; PII: S0022-4596(08)00066-2; Copyright (c) 2008 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 0022-4596
Country of Publication:
United States
Language:
English
Subject:
37 INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY; ABSORPTION; CALCIUM COMPOUNDS; ELECTRON DIFFRACTION; ELECTRON MICROSCOPY; IRRADIATION; LAYERS; LITHIUM COMPOUNDS; ORTHORHOMBIC LATTICES; OXIDES; PEROVSKITE; PHOTOCATALYSIS; REFLECTION; SPACE GROUPS; SPECTRA; SYNTHESIS; TANTALUM COMPOUNDS; TEMPERATURE RANGE 0273-0400 K; X RADIATION; X-RAY DIFFRACTION

Citation Formats

Zhenhua, Liang, Department of Chemistry, University of Science and Technology of China, Hefei, Anhui 230026, Kaibin, Tang, Department of Chemistry, University of Science and Technology of China, Hefei, Anhui 230026, Qian, Shao, Guocan, Li, Suyuan, Zeng, Department of Chemistry, University of Science and Technology of China, Hefei, Anhui 230026, and Huagui, Zheng. Synthesis, crystal structure, and photocatalytic activity of a new two-layer Ruddlesden-Popper phase, Li{sub 2}CaTa{sub 2}O{sub 7}. United States: N. p., 2008. Web. doi:10.1016/j.jssc.2008.01.042.
Zhenhua, Liang, Department of Chemistry, University of Science and Technology of China, Hefei, Anhui 230026, Kaibin, Tang, Department of Chemistry, University of Science and Technology of China, Hefei, Anhui 230026, Qian, Shao, Guocan, Li, Suyuan, Zeng, Department of Chemistry, University of Science and Technology of China, Hefei, Anhui 230026, & Huagui, Zheng. Synthesis, crystal structure, and photocatalytic activity of a new two-layer Ruddlesden-Popper phase, Li{sub 2}CaTa{sub 2}O{sub 7}. United States. https://doi.org/10.1016/j.jssc.2008.01.042
Zhenhua, Liang, Department of Chemistry, University of Science and Technology of China, Hefei, Anhui 230026, Kaibin, Tang, Department of Chemistry, University of Science and Technology of China, Hefei, Anhui 230026, Qian, Shao, Guocan, Li, Suyuan, Zeng, Department of Chemistry, University of Science and Technology of China, Hefei, Anhui 230026, and Huagui, Zheng. 2008. "Synthesis, crystal structure, and photocatalytic activity of a new two-layer Ruddlesden-Popper phase, Li{sub 2}CaTa{sub 2}O{sub 7}". United States. https://doi.org/10.1016/j.jssc.2008.01.042.
@article{osti_21128270,
title = {Synthesis, crystal structure, and photocatalytic activity of a new two-layer Ruddlesden-Popper phase, Li{sub 2}CaTa{sub 2}O{sub 7}},
author = {Zhenhua, Liang and Department of Chemistry, University of Science and Technology of China, Hefei, Anhui 230026 and Kaibin, Tang and Department of Chemistry, University of Science and Technology of China, Hefei, Anhui 230026 and Qian, Shao and Guocan, Li and Suyuan, Zeng and Department of Chemistry, University of Science and Technology of China, Hefei, Anhui 230026 and Huagui, Zheng},
abstractNote = {A new two-layer Ruddlesden-Popper phase Li{sub 2}CaTa{sub 2}O{sub 7} has been synthesized for the first time. The detailed structure determination of Li{sub 2}CaTa{sub 2}O{sub 7} performed by powder X-ray diffraction (XRD) and electron microscopy (ED) shows that it crystallizes in the space group Fmmm [a{approx}5.5153(1), b{approx}5.4646(1), c{approx}18.2375(3)A]. UV-visible diffuse reflection spectrum of the prepared Li{sub 2}CaTa{sub 2}O{sub 7} indicates that it had absorption in the UV region. The photocatalytic activity of the Li{sub 2}CaTa{sub 2}O{sub 7} powders was evaluated by degradation of RhB molecules in water under ultra visible light irradiation. The results showed that Li{sub 2}CaTa{sub 2}O{sub 7} has high photocatalytic activity at room temperature. Therefore, the preparation and properties studies of Li{sub 2}CaTa{sub 2}O{sub 7} with a two-layer Ruddlesden-Popper structure suggest potential future applications in photocatalysis. - Graphical abstract: Crystal structure of a two-layer Ruddlesden-Popper phase Li{sub 2}CaTa{sub 2}O{sub 7} A new two-layer Ruddlesden-Popper phase Li{sub 2}CaTa{sub 2}O{sub 7} has been synthesized for the first time. Li{sub 2}CaTa{sub 2}O{sub 7} crystallizes in the space group Fmmm determined by powder X-ray and electron diffraction. UV-visible diffuse reflection spectra and the photocatalytic degradation of RhB molecules in water under ultra visible light irradiation show that Li{sub 2}CaTa{sub 2}O{sub 7} is a potential material in photocatalysis.},
doi = {10.1016/j.jssc.2008.01.042},
url = {https://www.osti.gov/biblio/21128270}, journal = {Journal of Solid State Chemistry},
issn = {0022-4596},
number = 4,
volume = 181,
place = {United States},
year = {Tue Apr 15 00:00:00 EDT 2008},
month = {Tue Apr 15 00:00:00 EDT 2008}
}