A novel 3D inorganic heteropoly blue as visible light responsive photocatalystElectronic supplementary information (ESI) available: XPS spectra of W 4f level of 1; IR spectra of 1; simulated and as-synthesized XRPD for 1; temporal evolutions of the spectral changes of RhB solution corresponding to other traces of Fig. 4; and structure scheme of RhB; the experimental (top) X-ray powder diffraction (XRPD) patterns of original 1 and after photocatalytic reactions (bottom). See DOI: 10.1039/c4dt0061

• Main Authors: Fei, Bao-Li, Li, Wen, Wang, Jinag-Hong, Liu, Qing-Bo, Long, Jiang-Ying, Li, Yang-Guang, Shao, Kui-Zhan, Su, Zhong-Min, Sun, Wei-Yin
• Format: Article
• Language: English
• ISSN: 1477-9226; 1477-9234
• DOI: 10.1039/c4dt00619d

A new 3D extended heteropoly blue Ba 4 [SiW V 4 W VI 8 O 40 ]·H 2 O ( 1 ) composed of twelve-coordinated α-Keggin anions [SiW V 4 W VI 8 O 40 ] 8− and eight-coordinated Ba sites {BaO 8 } has been hydrothermally synthesized and fully characterized by elemental analysis, IR spectroscopy, XPS, single crystal X-ray and X-ray powder (XRPD) diffraction. 1 represents the first inorganic 3D framework constructed from four-electron reduced α-Keggin anions linked by alkaline earth metals. The photocatalytic activity of 1 has been evaluated for rhodamine B (RhB) degradation. 1 exhibits excellent catalytic activity for the degradation of RhB in the presence of H 2 O 2 and the involvement of visible light makes a more complete degradation. The results of the current study suggest that multi-electron reduced polyoxometalates can catalyze efficient degradation of an organic dye with H 2 O 2 . The first visible light responsive photocatalyst of inorganic four-electron reduced heteropoly blue (HPB) Ba 4 [SiW V 4 W VI 8 O 40 ]·H 2 O ( 1 ) was synthesized.