Method for preparing Bi-doped ZnS photocatalyst by taking ionic liquid as template
A technology of ionic liquid and photocatalyst, which is applied in the field of chemistry, can solve the problems of low quantum efficiency, high recombination rate of photogenerated electrons and holes, and weak photocatalytic activity, and achieve increased steric hindrance, good performance, and good dispersion Effect
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Embodiment l
[0015] Accurately weigh 0.2000 g of monodisperse ZnS nanospheres in a beaker filled with 5 mL of deionized water at room temperature, ultrasonically disperse it for 3 min, and then add 1.0 mL of C 8 h 15 N 2 BF 4 Ionic liquid, and then add a certain amount of deionized water to the reaction system to obtain a suspension. After ultrasonicating the obtained suspension for 2 min at room temperature, it is transferred to a hydrothermal high-pressure reactor, and the reactor is placed in an oven to make it cool at 160 Constant temperature at ℃ for 12 h. The obtained product was centrifuged and washed three times with deionized water and 95% ethanol, respectively, and then the centrifuged and washed product was placed in a vacuum drying oven at 80 °C for 24 h in vacuum, and after being taken out, it was ground finely, that is, A Bi-doped ZnS nanosphere photocatalyst with a molar ratio of Bi:Zn of 0:100 can be obtained.
Embodiment 2
[0017] Accurately weigh 0.2000 g of monodisperse ZnS nanospheres in a beaker filled with 5 mL of deionized water at room temperature, ultrasonically disperse it for 3 min, and add 0.0005 g of Bi(NO 3 ) 3 , and then dropwise added 1.0 mL of C to the beaker 8 h 15 N 2 BF 4 Ionic liquid, and then add a certain amount of deionized water to the reaction system to obtain a suspension. After ultrasonicating the obtained suspension for 2 min at room temperature, it is transferred to a hydrothermal high-pressure reactor, and the reactor is placed in an oven to make it cool at 160 Constant temperature at ℃ for 12 h. The obtained product was centrifuged and washed three times with deionized water and 95% ethanol, respectively, and then the centrifuged and washed product was placed in a vacuum drying oven at 75 °C for 24 h in vacuum, and after taking it out, it was ground finely, that is, A Bi-doped ZnS nanosphere photocatalyst with a molar ratio of Bi:Zn of 0.25:100 can be obtained....
Embodiment 3
[0019] Accurately weigh 0.2000 g of monodisperse ZnS nanospheres in a beaker filled with 5 mL of deionized water at room temperature, ultrasonically disperse it for 3 min, and add 0.0010 g of Bi(NO 3 ) 3 , and then dropwise added 1.0 mL of C to the beaker 8 h 15 N 2 BF 4 Ionic liquid, and then add a certain amount of deionized water to the reaction system to obtain a suspension. After ultrasonicating the obtained suspension for 2 min at room temperature, it is transferred to a hydrothermal high-pressure reactor, and the reactor is placed in an oven to make it cool at 160 Constant temperature at ℃ for 12 h. The obtained product was centrifuged and washed three times with deionized water and 95% ethanol respectively, and then the product after centrifugation and washing was put into a vacuum drying oven at 85 °C for 26 h in vacuum, and after taking it out, it was ground finely, that is, A Bi-doped ZnS nanosphere photocatalyst with a molar ratio of Bi:Zn of 0.5:100 can be ob...
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