Preparation method for titanium dioxide/carbon nanotube composite nanosheets
A technology of carbon nanotube composite and titanium dioxide, which is applied in the fields of titanium dioxide, titanium oxide/hydroxide, chemical instruments and methods, etc., can solve the problems such as the synthesis and application of titanium dioxide/carbon nanotube composite nanosheets that have not been reported, and achieve Low price, simple production process, and the effect of saving production costs
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Embodiment 1
[0030] Put 125mL of deionized water at 4°C into a 500mL round bottom flask, slowly add 0.8mL (1.55g) of TiCl in an ice-water bath with constant stirring 4 After continuing to stir for 1 h, slowly add a 2M ammonia solution dropwise until the pH value in the solution is 7 and a white precipitate is formed, and then centrifuged and washed 5 times with deionized water at a centrifugal speed of 8000 rpm. Then disperse the white precipitate in 25mL of deionized water, slowly add 7mL of hydrogen peroxide dropwise under constant stirring, continue to stir until the solution turns into a yellow transparent solution, and dilute the solution with deionized water to the theoretical TiO 2 The content is 10 mg / ml and placed in a refrigerator at 4°C (referred to as solution A).
[0031]Ultrasonic disperse 0.2g of carbon nanotubes with a diameter of 8nm in a concentrated nitric acid solution with a concentration of 15M, reflux at 120°C for 12h, wash the acidified carbon nanotubes with deioniz...
Embodiment 2
[0033] Put 250mL of deionized water at 4°C into a 500mL round-bottomed flask, and slowly add 2.5g of TiCl in an ice-water bath with constant stirring 3 After continuing to stir for 1 h, slowly add NaOH solution with a concentration of 3M dropwise until the pH value in the solution is 8 to form a white precipitate, which is then centrifuged and washed 5 times with deionized water at a centrifugation speed of 6000 rpm. Then disperse the white precipitate in 50mL of deionized water, slowly add 14mL of hydrogen peroxide dropwise under constant stirring, continue to stir until the solution turns into a yellow transparent solution, and dilute the solution with deionized water to the theoretical TiO 2 The content was 10 mg / ml and placed in a refrigerator at 4°C (solution A).
[0034] Ultrasonic disperse 0.2g of carbon nanotubes with a diameter of 8nm in a concentrated nitric acid solution with a concentration of 15M, reflux at 120°C for 6h, wash the acidified carbon nanotubes with de...
Embodiment 3
[0036] Put 300 mL of deionized water at 2 °C into a 1000 mL round bottom flask, and slowly add 2.0 g of Ti(SO 4 ) 2 After continuing to stir for 1 h, slowly add a concentration of 1M sodium hydroxide aqueous solution dropwise until the pH value in the solution is 7 and a white precipitate is formed, and then centrifuged and washed 5 times with deionized water at a centrifugal speed of 6000 rpm. Then disperse the white precipitate in 60mL of deionized water, slowly add 20mL of hydrogen peroxide dropwise under constant stirring, continue to stir until the solution turns into a yellow transparent solution, dilute the solution with deionized water to the theoretical TiO 2 The content was 10 mg / ml and placed in a refrigerator at 4°C (solution A).
[0037] Ultrasonic disperse 0.1 g of carbon nanotubes with a diameter of 10-20 nm in a concentrated nitric acid solution with a concentration of 15 M, reflux at 120 ° C for 6 h, wash the acidified carbon nanotubes with deionized water fo...
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