A kind of preparation method of zinc-doped tungsten trioxide
A tungsten trioxide, zinc doping technology, applied in chemical instruments and methods, tungsten oxide/tungsten hydroxide, metal/metal oxide/metal hydroxide catalyst, etc.
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Embodiment 1
[0032] In a water bath at 20 °C, 1 g of the triblock polymer P123 and polyvinylpyrrolidone (PVP) mixture was completely dissolved in 20 mL of deionized water by magnetic stirring, and then 8 mL of 6 M HCl solution was added to make P123 and PVP The mixture was acidified and aged for 3 h; weighed 2 g of Na 2 WO 4 2H 2 O was placed in a beaker and dissolved in 10 mL of deionized water to form a transparent solution; 2 WO 4 Add the transparent solution dropwise to the acidic mixed solution of P123 and PVP, and stir magnetically while adding to form a yellow suspension. After filtering, washing with water, washing with alcohol, and drying, a yellow tungstic acid precipitate is obtained; take 0.5 g of hexahydrate Dissolve zinc nitrate with 5 mL of deionized water, then add 0.5 g of PVP into the zinc nitrate solution, stir to dissolve, then add dropwise 1 M NaOH solution, so that all zinc ions are precipitated, and then filter, wash with water, wash with alcohol, After drying, a...
Embodiment 2
[0034] In a water bath at 20 °C, 3 g of the triblock polymer P123 and polyvinylpyrrolidone (PVP) mixture was completely dissolved in 40 mL of deionized water by magnetic stirring, and then 14 mL of 6 M HCl solution was added to make P123 and PVP The mixture was acidified and aged for 5 h; weighed 5 g of Na 2 WO 4 2H 2 O was placed in a beaker and dissolved in 20 mL of deionized water to form a transparent solution; 2 WO 4 Add the transparent solution dropwise to the acidic mixed solution of P123 and PVP, and stir magnetically while adding to form a yellow suspension, which is filtered, washed with water, washed with alcohol, and dried to obtain a yellow tungstic acid precipitate; take 3 g of hexahydrate Zinc nitrate was dissolved in 10 mL of deionized water, then 1.2 g of PVP was added to the zinc nitrate solution, stirred and dissolved, and then 2 M NaOH solution was added dropwise to precipitate all the zinc ions. After filtering, washing with water, washing with alcohol,...
Embodiment 3
[0036] In a water bath at 20 °C, completely dissolve 4 g of the triblock polymer P123 and polyvinylpyrrolidone (PVP) mixture in 60 mL of deionized water by magnetic stirring, and then add 20 mL of 6 M HCl solution to make P123 and PVP The mixture was acidified and aged for 8 h; 7 g of Na 2 WO 4 2H 2 O was placed in a beaker and dissolved in 30 mL of deionized water to form a transparent solution; 2 WO 4 Add the transparent solution dropwise to the acidic mixed solution of P123 and PVP, and stir magnetically while adding to form a yellow suspension. After filtering, washing with water, washing with alcohol, and drying, a yellow tungstic acid precipitate is obtained; take 5 g of hexahydrate Zinc nitrate was dissolved in 15 mL of deionized water, then 2 g of PVP was added to the zinc nitrate solution, stirred and dissolved, and then 4 M NaOH solution was added dropwise to make the zinc ions all precipitate, after filtration, water washing, alcohol washing, After drying, a whi...
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