Preparation method and application of hollow MnO2@SiO2 nanomaterial modified polyurethane foam
A technology of polyurethane foam and nanomaterials, applied in chemical instruments and methods, water/sludge/sewage treatment, water/sewage treatment, etc., can solve problems such as super-hydrophobic performance damage, achieve low cost, improve hydrophobicity, and improve The effect of oil absorption performance
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Embodiment 1
[0036] (1) Hollow MnO 2 @SiO 2 Preparation of Nanomaterials
[0037] A. According to the ratio of adding 100 mL 2 M ferric chloride solution to every 90 mL 6 M sodium hydroxide solution, after ultrasonic stirring for 15 min, pour the mixed solution into a polytetrafluoroethylene-lined stainless steel reaction kettle, Hydrothermal reaction at 100°C for 5 days, filtered after cooling, washed with distilled water, and dried in an oven at 50°C to obtain solid iron oxide;
[0038] B. Add 40 mL of deionized water, 6 mL of ammonia water and 0.5 mL of tetraethyl orthosilicate to each 160 mL of ethanol to form a mixed solution, corresponding to the addition of 0.1 g of iron oxide, and react under mechanical stirring for 3 h, by separating, washing and drying to obtain silicon dioxide-coated iron oxide. The obtained solid was added to 4 M hydrochloric acid and reacted at 100°C for 24 h, filtered, washed and dried to obtain hollow silica;
[0039] C. Add 120 mL of deionized water and...
Embodiment 2
[0049] (1) Hollow MnO 2 @SiO 2 Preparation of Nanomaterials
[0050] A. According to the ratio of adding 100 mL 2 M ferric chloride solution to every 90 mL 6 M sodium hydroxide solution, after ultrasonic stirring for 15 min, pour the mixed solution into a polytetrafluoroethylene-lined stainless steel reaction kettle, Hydrothermal reaction at 120°C for 5 days, filtered after cooling, washed with distilled water, and dried in an oven at 50°C to obtain solid iron oxide;
[0051] B. Add 40 mL of deionized water, 6 mL of ammonia water and 0.6 mL of tetraethyl orthosilicate to each 160 mL of ethanol to form a mixed solution, corresponding to the addition of 0.1 g of iron oxide, and react under mechanical stirring for 5 h, by separating, washing and drying to obtain silicon dioxide-coated iron oxide. Add the obtained solid to 6 M hydrochloric acid and react at 100°C for 24 h, filter, wash and dry to obtain hollow silica;
[0052] C. Add 120 mL of deionized water and 6 g of potass...
Embodiment 3
[0062] (1) Hollow MnO 2 @SiO 2 Preparation of Nanomaterials
[0063] A. According to the ratio of adding 100 mL 2 M ferric chloride solution to every 90 mL 6 M sodium hydroxide solution, after ultrasonic stirring for 15 min, pour the mixed solution into a polytetrafluoroethylene-lined stainless steel reaction kettle, Hydrothermal reaction at 100°C for 8 days, filtered after cooling, washed with distilled water, and dried in an oven at 50°C to obtain solid iron oxide;
[0064] B. Add 40 mL of deionized water, 6 mL of ammonia water and 0.6 mL of tetraethyl orthosilicate to each 160 mL of ethanol to form a mixed solution, corresponding to the addition of 0.1 g of iron oxide, and react under mechanical stirring for 3 h, by separating, washing and drying to obtain silicon dioxide-coated iron oxide. The obtained solid was added to 4 M hydrochloric acid and reacted at 100°C for 48 h, filtered, washed and dried to obtain hollow silica;
[0065] C. Add 120 mL of deionized water and...
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