A novel 3D inorganic heteropoly blue as visible light responsive photocatalyst.
A new 3D extended heteropoly blue Ba4[SiW(V)4W(VI)8O40]·H2O (1) composed of twelve-coordinated α-Keggin anions [SiW(V)4W(VI)8O40](8-) and eight-coordinated Ba sites {BaO8} 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 H2O2and 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 H2O2.
College of Chemical Engineering, Nanjing Forestry University, Nanjing 210037, China. hgfbl@njfu.edu.cn.
Bao-Li
BL
Fei
Wen
W
Li
Jinag-Hong
JH
Wang
Qing-Bo
QB
Liu
Jiang-Ying
JY
Long
Yang-Guang
YG
Li
Kui-Zhan
KZ
Shao
Zhong-Min
ZM
Su
Wei-Yin
WY
Sun