摘要

Three Keggin-based compounds containing Ag-I belts and cycles constructed from 5-phenyl-1H-tetrazole (L-1) and its derivative 5-m-tolyl-1H-tetrazole (L-2), [Ag9L51((PWW11O40)-W-V-O-VI)]center dot H2O (1), [Ag11L61(H2O)(2)((SiMoMo11O40)-Mo-V-O-VI)] (2) and [Ag10L82(HPMo12O40)]center dot H2O (3), have been synthesized under hydrothermal conditions and characterized by IR spectra and single crystal X-ray diffraction. Compound 1 shows a channel-like 3-D metal-organic framework with Keggin anions in channels. Adjacent layers of 2 share the same anions to construct a 3-D framework. Compound 3 has a 2-D metalorganic layer containing AgI cycles. Adjacent layers link through sharing Ag-N bonds and a channel-like 3-D framework is formed. Electrochemical and photocatalytic properties of 1-3 have been studied. The experimental results show that 1-3 have excellent catalytic performance for reduction of nitrite and bromate and also have photocatalytic properties for degradation of MB and RhB.