A kind of heterojunction metal anticorrosion pigment
An anti-corrosion pigment and heterojunction technology, applied in the direction of inorganic pigment treatment, fibrous fillers, chemical instruments and methods, etc., can solve the problems of single photocathode protection, etc., to improve anti-corrosion performance, prevent contact, and excellent anti-corrosion performance effect
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Embodiment 1
[0017] First, take 5.00 g H 2 WO 4 and 1.26 g H 2 C 2 o 4 2H 2 O in a beaker, add 20 mL of pure water and magnetically stir evenly. Then, a certain amount of hydrazine hydrate solution (2.40 mL and 0 mL) was slowly added dropwise with stirring, and the stirring was continued for 30 min. The obtained product was dried in a vacuum oven at 60 °C for 8 h, and light blue and yellow precursor powders were obtained after grinding. Finally, put the precursor in a quartz boat and put it into a quartz tube, heat it up to 500 °C for 30 minutes in the nitrogen atmosphere of the tube furnace, and cool to room temperature to obtain tungsten oxide powder, which are named as WO 2.92 . The above obtained WO 2.92 The solid powder was added to 0.25 mol / L Zn(NO 3 ) 2 In the solution, slowly drop 0.5 mol / L NaOH solution into the resulting suspension under magnetic stirring to produce precipitation. After continuous stirring for 1 h, the precipitate was filtered, washed several times wit...
Embodiment 2
[0019] First, take 5.00 g H 2 WO 4 and 1.26 g H 2 C 2 o 4 2H 2 O in a beaker, add 20 mL of pure water and magnetically stir evenly. Then, a certain amount of hydrazine hydrate solution (2.40 mL and 0 mL) was slowly added dropwise with stirring, and the stirring was continued for 30 min. The obtained product was dried in a vacuum oven at 100 °C for 2 h, and light blue and yellow precursor powders were obtained after grinding. Finally, the precursors were placed in a quartz boat and placed in a quartz tube, heated to 800 °C for 30 min in a nitrogen atmosphere in a tube furnace, and cooled to room temperature to obtain tungsten oxide powders, which were named WO 2.92 . The above obtained WO 2.92 The solid powder was added to 0.25 mol / L Zn(NO 3 ) 2 In the solution, slowly drop 0.5 mol / L NaOH solution into the resulting suspension under magnetic stirring to produce precipitation. After continuous stirring for 1 h, the precipitate was filtered, washed several times with p...
Embodiment 3
[0021] First, take 5.00 g H 2 WO 4 and 1.26 g H 2 C 2 o 4 2H 2 O in a beaker, add 20 mL of pure water and magnetically stir evenly. Then, a certain amount of hydrazine hydrate solution (2.40 mL and 0 mL) was slowly added dropwise with stirring, and the stirring was continued for 30 min. The obtained product was dried in a vacuum oven at 90 °C for 6 h, and light blue and yellow precursor powders were obtained after grinding. Finally, put the precursor in a quartz boat and put it into a quartz tube, heat it up to 500 °C for 30 minutes in the nitrogen atmosphere of the tube furnace, and cool to room temperature to obtain tungsten oxide powder, which are named as WO 2.92 . The above obtained WO 2.92 The solid powder was added to 0.25 mol / L Zn(NO 3 ) 2 In the solution, slowly drop 0.5 mol / L NaOH solution into the resulting suspension under magnetic stirring to produce precipitation. After continuous stirring for 1 h, the precipitate was filtered, washed several times wit...
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