Hydrothermal Synthesis and Characterization of POM-Based Photocatalyst for Degradation of Pollutant Organic Dyes

Abstract:

The activated photocatalysts are urgently needed for the application of photocatalytic techniques in environmental pollutant removal. A POM - based photocatalyst with the chemical formula of (4, 4’-H₂bpy)( 4, 4’-Hbpy)₂[SiW₁₂O₄₀]·4H₂O (1) has been hydrothermally synthesized and structurally characterized by the elemental analysis, and single crystal X-ray diffraction. Compound 1 consists of 4, 4’-bipyridine unit and keggin type polyoxometalates [SiW₁₂O₄₀]^4-. There are hydrogen-bonding interactions between polyoxometalates, 4, 4’-bipyridine and water molecules in 1, forming a new 3-D networks. The degradation of rhodamine B (RhB) under UV-vis irradiation with 1 as the heterogeneous photocatalyst has been investigated, showing a good photocatalytic property of 1 for RhB degradation.

• Periodical: Advanced Materials Research (Volumes 919-921)
• Pages: 2166-2169
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.919-921.2166
• Online since: April 2014
• Authors: Ya Bing Liu, Hong Jie Wang, Hong Kai Zhao
• Keywords: Degradation, Hydrothermal Synthesis, Photocatalyst, Polyoxometalate

References

[1] J.M. Lehn: Supramolecular Chemistry (VCH, New York 1995).

[2] F. Vögtle: Supramolecular Chemistry (Wiley Chicester 1991).

[3] M. Lehn: Comprehensive Supramolecular Chemistry (Pergamum, New York 1996).

[4] J.M. Lehn. Angew. Chem. Int. Ed. Engl., 29 (1990), 1304.

[5] Y. Xu, H.G. Zhu, H. Cai, X.Z. You, Chem. Commun., 9 (1999), 787.

[6] X.Y. Yu, X.B. Cui, J. Lu, Y.H. Luo, H. Zhang, W.P. Gao, J. Solid State Chem., 209 (2014) , 97.

[7] G. Yan, X. Wang, Y.Y. Ma, X. Cheng, Y.H. Wang, Y.G. Li, Solid State Scinces, 17 (2013), 146.

[8] J. Wu, C.X. Wang, K. Yu, Z. H Su, Y. Yu, Y.L. Xu, B.B. Zhou, J. Coord. Chem., 65 (2012), 69.

[9] D. Altermatt, I.D. Brown, Acta Crystallogr. B, 41 (1985), 240.