Abstract
By the rational self-assembly of trivacant Keggin precursor [B-α-SbW9O33]9− with Fe3+ and Ce3+ cations in the conventional aqueous solution, a novel FeIII–CeIII heterometallic sandwich-type tungstoantimonate [Ce(H2O)8][Ce(H2O)6] [Fe4(H2O)10(B-β-SbW9O33)2]·16H2O (1) has been successfully synthesized and further structurally characterized by elemental analyses, IR spectra and single-crystal X-ray diffraction. Structural analysis indicates that the 2-D infinite sheet of 1 consists of the Krebs' sandwich-type [Fe4(H2O)10(B-β-SbW9O33)2]6− subunits and Ce3+ linkers. 1 represents the rare purely inorganic FeIII–CeIII heterometallic tungstoantimonate derivative with the 2-D infinite sheet. The electrochemical and electrocatalytic properties of 1 have been systemically studied in 0.5mol·L−1 Na2SO4+H2SO4 supporting electrolyte, moreover, 1 exhibits the obvious electrocatalytic activity towards the reduction of BrO3− and NO2−.
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