Super-hydrophobic polymer/titanium-based photocatalytic aerogel block material and preparation method thereof
A polymer and superhydrophobic technology, applied in organic compound/hydride/coordination complex catalysts, physical/chemical process catalysts, chemical instruments and methods, etc., can solve problems such as unfavorable, toxic organic solvents, and non-environmental protection. Achieve the effects of easy processing, bulky shape, and improved hydrophobicity
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Embodiment 1
[0034] 1. Preparation of gel emulsion
[0035] At room temperature, 6g styrene (PS), 0.1g aramid 1414, 0.1g Tween 60, 0.5g benzoyl peroxide, 0.6g divinylbenzene, 0.6g hydrophobic TiO 2 After / Ag@AgCl is completely mixed on a mixer, add 28g of distilled water drop by drop, shake, and mix on a mixer to obtain a gel emulsion.
[0036] The aforementioned hydrophobic TiO 2 / Ag@AgCl is prepared as follows:
[0037] (1) Add 14mL (51.31mmol) of isopropyl titanate to 162g of 20% ethanol aqueous solution by volume fraction, then add 36mL of 6mol / L hydrochloric acid, heat and stir at 60°C for 6h, age for 12h, filter and wash several times times, dried, ground into fine powder, calcined at 650°C for 4h, cooled naturally to obtain TiO 2 .
[0038] (2) 5g TiO 2 Disperse in 150mL deionized water, evenly disperse it in deionized water, and add 50mL0.1mol / L AgNO 3 aqueous solution, stirred at room temperature for 20 to 30 minutes, then added 50 mL of 0.1mol / L hydrochloric acid, stirred f...
Embodiment 2
[0052] In the present embodiment, use the hydrophobic TiO of equal mass 2 Replace the hydrophobic TiO in Example 1 2 / Ag@AgCl, the other steps are the same as in Example 1 to obtain superhydrophobic PS / TiO 2 Airgel blocks. Among them, the hydrophobic TiO 2 The preparation method is as follows:
[0053] (1) Add 14mL (51.31mmol) of isopropyl titanate to 162g of 20% ethanol aqueous solution by volume fraction, then add 36mL of 6mol / L hydrochloric acid, heat and stir at 60°C for 6h, age for 12h, filter and wash times, dried, ground into fine powder, calcined at 650°C for 4h, cooled naturally to obtain TiO 2 .
[0054] (2) Mix 3mL silane coupling agent KH-570, 30mL deionized water and 270mL absolute ethanol, adjust the pH value to about 4; weigh 3.0g TiO 2 Add it into the mixture, stir at a constant speed at 60°C for 3 hours, wash with a mixture of deionized water and absolute ethanol, and dry to obtain hydrophobic TiO 2 .
Embodiment 3
[0056] In the present embodiment, use the hydrophobic TiO of equal mass 2 / C 3 N 4 Replace the hydrophobic TiO in Example 1 2 / Ag@AgCl, the other steps are the same as in Example 1 to obtain superhydrophobic PS / TiO 2 / C 3 N 4 Airgel blocks. Among them, the hydrophobic TiO 2 / C 3 N 4 The preparation method is as follows:
[0057] (1) Add 14mL (51.31mmol) of isopropyl titanate to 162g of 20% ethanol aqueous solution by volume fraction, then add 36mL of 6mol / L hydrochloric acid, heat and stir at 60°C for 6h, age for 12h, filter and wash times, dried to get TiO 2 gel.
[0058] (2) 1g TiO 2 The gel was mixed with 1g of melamine, calcined at 600°C for 4h, and cooled naturally to obtain TiO 2 / C 3 N 4 .
[0059] (3) Mix 3mL silane coupling agent KH-570, 30mL deionized water and 270mL absolute ethanol, adjust the pH value to about 4; weigh 3.0g TiO 2 / C 3 N 4 Add it into the mixture, stir at a constant speed at 60°C for 3 hours, wash with a mixture of deionized wate...
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