Room Temperature Solid Phase Synthesis And Catalytic Properties Of Amino Acid Heteropoly Acid

Heteropoly acid supramolecular compounds due to their structural diversity, uniquenessin materials, medicine, catalysis and biology etc and are widely used in the field and get a lotof research. Especially for high toxicity and biological degradation of pollution of hard to dyehas good degradation effect.Transition metal monosubstitued Heteropoly silicotungstic supermolecule compoundswith Keggin structure （HGly）₅[Co（H₂O）NiWllO₃₉]·14H₂O,（HGly）₅[Co（H₂O）Zn WllO₃₉]·14H₂O,（HGly）₃PW₁₂O₄₀·9H₂O,（HGly）₃PMo₁₂O₄₀·13H₂O were synthesized. The supermoleculecompounds were characterized by means of IR, UV, XRD diffraction characterizationmethods of structure determination. The results showed that: through electrostatic interactionsbetween ions are combined, while the formation of the new compounds, but still maintain theoriginal compounds in two kinds of main compounds of the structure skeleton. Using alpha（HGly）₅[Co（H₂O）NiWllO₃₉]·14H₂O,（HGly）₅[Co（H₂O）ZnWllO₃₉]·14H₂O,（HGly）₃PW₁₂O₄₀·9H₂O,（HGly）₃PMo₁₂O₄0·13H2O on the degradation of methylene blue as the simulation oforganic dye pollutants.The experimental results show that the effect of dyes, photocatalytic properties that thedecolorization rate of factors: the catalyst amount, initial MB concentration and initial pHvalue. The results show that the synthesis of Amino acid Heteropoly acid with goodphotocatalytic properties, optimal reaction conditions:（HGly）₅[Co（H₂O）NiWllO₃₉]·14H₂O thehighest decolorization rate reached84.55%, the amount of catalyst6mg, pH value about4,dye concentration of6mg/L，the time about200minute.