Graphene/titanate nanometer composite visible-light activated photocatalyst and preparation method thereof
A nanocomposite and photocatalyst technology, applied in the field of nanocomposite materials and photocatalysis, to achieve the effects of good surface morphology, enhanced visible light catalytic performance, and large specific surface area
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[0031] Example 1
[0032]Dissolve 2.55 mL of tetrabutyl titanate in 20 mL of absolute ethanol, add ammonia aqueous solution under stirring, filter and wash to obtain titanium oxyhydroxide precipitate. Dissolve 4.76 g of barium nitrate and 2.1 g of potassium hydroxide, respectively, in 10 mL of deionized water. 20 mg of graphene oxide was sonicated in 20 mL of deionized water for 3 h, and then an aqueous barium nitrate solution was added and stirred for another 8 h. The oxyhydroxide precipitation of titanium, barium nitrate and graphene oxide solution were mixed and stirred for 30 minutes, then potassium hydroxide aqueous solution was added and stirred for 10 minutes, then transferred to the inner tank of the reactor with a volume of 100 mL, and the reaction was adjusted with deionized water. The volume of the reaction material in the inner tank of the kettle reaches 75% of the volume of the inner tank of the reaction kettle, and then it is placed in a stainless steel jacket, ...
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[0033] Example 2
[0034] Dissolve 2.55 mL of tetrabutyl titanate in 20 mL of absolute ethanol, add ammonia aqueous solution under stirring, filter and wash to obtain titanium oxyhydroxide precipitate. Dissolve 4.76 g of barium nitrate and 2.1 g of potassium hydroxide, respectively, in 10 mL of deionized water. 50 mg of graphene oxide was sonicated in 20 mL of deionized water for 4 h, and then an aqueous solution of barium nitrate was added and stirred for another 10 h. The oxyhydroxide precipitation of titanium, barium nitrate and graphene oxide solution were mixed and stirred for 30 minutes, then potassium hydroxide aqueous solution was added and stirred for 10 minutes, then transferred to the inner tank of the reactor with a volume of 100 mL, and the reaction was adjusted with deionized water. The volume of the reaction material in the inner liner of the kettle reaches 75% of the volume of the inner liner of the reactor, and then it is placed in a stainless steel jacket, s...
Example Embodiment
[0035] Example 3
[0036] Dissolve 2.55 mL of tetrabutyl titanate in 20 mL of absolute ethanol, add ammonia aqueous solution under stirring, filter and wash to obtain titanium oxyhydroxide precipitate. Dissolve 4.76 g of barium nitrate and 2.1 g of potassium hydroxide, respectively, in 10 mL of deionized water. 100 mg of graphene oxide was sonicated in 20 mL of deionized water for 5 h, and then an aqueous solution of barium nitrate was added and stirred for another 10 h. The oxyhydroxide precipitation of titanium, barium nitrate and graphene oxide solution were mixed and stirred for 30 minutes, then the potassium hydroxide aqueous solution was added and stirred for 10 minutes, then transferred into the inner tank of a 100 mL reactor, and the reactor was adjusted with deionized water. The volume of the reaction material in the inner tank reaches 75% of the volume of the inner tank of the reaction kettle, and then placed in a stainless steel jacket, sealed, and kept at 180 ° C ...
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