Preparation method of cotton bast loaded nano-titanium dioxide and glycine betaine photocatalyst
A nano-titanium dioxide, photocatalyst technology, applied in chemical instruments and methods, physical/chemical process catalysts, organic compound/hydride/coordination complex catalysts, etc., can solve the problems of complex and difficult recycling process, and achieve high catalytic activity. , good stability, excellent mechanical stability effect
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Embodiment 1
[0024] (1) Cotton stalk skin pretreatment: Soak the cotton stalks in water at room temperature for 2-3 days, peel off the skin of the outer layer of the cotton stalks, wash with water, remove impurities, dry and then crush to obtain pretreated cotton stalk skins;
[0025] (2) Oxidized cotton stalks: In the reactor, add deionized water: 55mL, concentrated sulfuric acid: 15mL, pretreated cotton stalks: 14g, potassium permanganate: 3g, soak at room temperature for 1.5h, and then boil for 10min , after cooling, wash with deionized water until the filtrate is neutral, and dry to obtain oxidized cotton stalk bark;
[0026] (3) Aminated cotton stalk skin: In the reactor, add anhydrous ethanol: 81mL, γ-aminopropyltriethoxysilane: 26g, oxidized cotton stalk skin: 10g, keep the temperature at 65±3℃, Stirring and reflux reaction for 5 hours, after cooling, washing with deionized water until the filtrate is neutral, drying to obtain aminated cotton stalk skin;
[0027] (4) Diethyltriamin...
Embodiment 2
[0030] (1) Cotton stalk skin pretreatment: Soak the cotton stalks in water at room temperature for 2-3 days, peel off the skin of the outer layer of the cotton stalks, wash with water, remove impurities, dry and then crush to obtain pretreated cotton stalk skins;
[0031] (2) Oxidized cotton stalks: In the reactor, add deionized water: 50mL, concentrated sulfuric acid: 17mL, pretreated cotton stalks: 16g, potassium permanganate: 2g, soak at room temperature for 1h, and then boil for 10min. After cooling, wash with deionized water until the filtrate is neutral, and dry to obtain oxidized cotton stalk bark;
[0032] (3) Aminated cotton stalk skin: In the reactor, add anhydrous ethanol: 76mL, γ-aminopropyltriethoxysilane: 28g, oxidized cotton stalk skin: 12g, keep the temperature at 65±3℃, Stirring and reflux reaction for 4 hours, after cooling, washing with deionized water until the filtrate is neutral, drying to obtain aminated cotton stalk skin;
[0033] (4) Diethyltriaminepent...
Embodiment 3
[0036] (1) Cotton stalk skin pretreatment: Soak the cotton stalks in water at room temperature for 2-3 days, peel off the skin of the outer layer of the cotton stalks, wash with water, remove impurities, dry and then crush to obtain pretreated cotton stalk skins;
[0037] (2) Oxidized cotton stalks: In the reactor, add deionized water: 60mL, concentrated sulfuric acid: 13mL, pretreated cotton stalks: 11g, potassium permanganate: 4g, soak at room temperature for 2h, and then boil for 10min. After cooling, wash with deionized water until the filtrate is neutral, and dry to obtain oxidized cotton stalk bark;
[0038] (3) Aminated cotton stalk husk: In the reactor, add absolute ethanol: 86mL, γ-aminopropyltriethoxysilane: 24g, oxidized cotton stalk husk: 8g, keep the temperature at 65±3℃, Stirring and reflux reaction for 6 hours, after cooling, washing with deionized water until the filtrate is neutral, drying to obtain aminated cotton stalk skin;
[0039] (4) Diethyltriaminepent...
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