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.

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