| SbW9 was used as reducing agent,stabilizer and ligand,Ag NO3 and H2Pt Cl6 were used as precursors to synthesize Ag@SbW9 and Pt@SbW9 nanoparticles,which were characterized by the Infrared Spectrum(IR),the UV-Visible Absorption Spectroscopy(UV-Vis),the Transmission Electron Microscope(TEM)and the Energy Spectrometer(EDS).The catalytic properties of the two composite nanoparticles were studied:1)Ag@SbW9nanoparticles exhibit good visible photocatalytic activity due to the synergistic effect between the Ag~0 and SbW9.Visible photocatalytic degradation efficiency of Ag@SbW9 for the Methylene Blue(MB)up to 98.74%within 90 min;2)Both Ag@SbW9 and Pt@SbW9showed high catalytic reduction activity for the Potassium Ferricyanide(K3[Fe(CN)6])and the Methyl Orange MO,and their catalytic reduction reactions all conform to the first-order kinetic model.The rate constants of the best catalytic reactions of Ag@SbW9 nanoparticles for the K3[Fe(CN)6]and MO systems were 7.47×10-3 s-1 and 1.35×10-2 s-1,and the best catalytic reactions of Pt@SbW9 nanoparticles for the K3[Fe(CN)6]and MO systems had rate constants of 2.75×10-2 s-1 and 3.07×10-2 s-1. |
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