| abstract |
The invention discloses a kind of heteropoly acid/graphene oxide composite material and its preparation method and application, sodium tungstate is soluble in water, sodium dihydrogen phosphate is added after adjusting pH to 4.5 6 with watery hydrochloric acid, it is heated to 80 90 DEG C, constant temperature stirs 0.8 1.2h, filtering, after taking KCl addition filtrate stirring and dissolvings, refrigeration is placed and separates out crystal, filtering drying obtains final product heteropoly acid, heteropoly acid is dissolved into obtained solution A in distilled water, graphene oxide is dissolved into obtained solution B in deionized water, 18 24 h will be mixed and stirred for after solution A and solution B respectively ultrasonic 0.3 0.8h, heteropoly acid/graphene oxide composite material is obtained final product after drying.Be supported on heteropoly compound on carrier by the present invention, can not only make that specific surface area is greatly improved, catalytic performance improves, moreover it is possible to improves its repeatability, recuperability in the application etc..The present invention can be used for industrial dye waste water treatment. |