A kind of modified carbon cloth and its preparation method and application
A technology of modified carbon and carbon cloth, which is applied in separation methods, chemical instruments and methods, and immiscible liquid separation. It can solve the problems of low separation efficiency and poor oil pollution resistance, and achieve simple operation and easy module upgrade. , Excellent chemical stability
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[0048]The present invention also provides a method for preparing the modified carbon cloth, comprising the following steps: S1 immersing the unmodified carbon cloth in a mixed solution of zinc salt and amide compound after activation; S2 using microwaves to irradiate the mixed solution Obtaining carbon cloth I; S3 washing the carbon cloth I with alkali to obtain carbon cloth II; S4 drying and calcining the carbon cloth II to obtain the modified carbon cloth. First, the unmodified carbon cloth was activated to remove the pollutants on the surface of the carbon cloth, and at the same time, the reactivity of the surface of the carbon cloth was increased, so that the zinc oxide coating was more likely to adhere to the surface of the carbon fiber. After the unmodified carbon cloth is activated, it is immersed in the mixed solution of zinc salt and amide compound, and then the mixed solution is irradiated with microwaves; under the action of microwaves, the carbon cloth will absorb m...
Embodiment 1
[0080] The difference with embodiment 1 is that Zn(NO 3 ) 2 ·6H 2 The concentration of O is 0.0075mol / L.
[0081] First, the carbon cloth was ultrasonically activated in acetone, deionized water, and ethanol for 10 min in sequence. After activation, the carbon cloth substrate was dried in an oven at 80 °C for 1 hour, then cooled to room temperature, and cleaned. Then, soak the cleaned carbon cloth in 50ml of Zn(NO 3 ) 2 ·6H 2 O and (NH 2 ) 2 in a mixed solution of CO. In the mixed solution, Zn(NO 3 ) 2 ·6H 2 When the concentration of O is 0.0075mol / L, Zn(NO 3 ) 2 ·6H 2 O and (NH 2 ) 2 The molar ratio of CO is 1:3. Finally, the beaker containing the mixed solution and carbon cloth was placed in a microwave oven, and then irradiated at a frequency of 2.45GHz with a power of 1500W for 30s to obtain carbon cloth I; Carbon cloth II was obtained after alkali-washing the carbon cloth with ammonium bromide solution (adjust the pH value to 8 with sodium hydroxide), dr...
Embodiment 2
[0083] The difference with embodiment 1 is that Zn(NO 3 ) 2 ·6H 2 The concentration of O is 0.01mol / L.
[0084] First, the carbon cloth was ultrasonically activated in acetone, deionized water, and ethanol for 10 min in sequence. After activation, the carbon cloth substrate was dried in an oven at 80 °C for 1 h, then cooled to room temperature, and cleaned. Then, soak the cleaned carbon cloth in 50ml of Zn(NO 3 ) 2 ·6H 2 O and (NH 2 ) 2 in a mixed solution of CO. In the mixed solution, Zn(NO 3 ) 2 ·6H 2 When the concentration of O is 0.01mol / L, Zn(NO 3 ) 2 ·6H 2 O and (NH 2 ) 2 The molar ratio of CO is 1:3. Finally, the beaker containing the mixed solution and carbon cloth was placed in a microwave oven, and then irradiated at a frequency of 2.45GHz with a power of 1500W for 30s to obtain carbon cloth I; Carbon cloth II was obtained by alkali-washing the carbon cloth with ammonium bromide solution (adjusting the pH value to 8 with sodium hydroxide), drying in...
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