Nano titanium dioxide photocatalyst capable of degrading phenolic pollutants in wastewater
A nano-titanium dioxide and photocatalyst technology, applied in the direction of physical/chemical process catalysts, water pollutants, organic compounds/hydrides/coordination complex catalysts, etc., can solve neurological diseases, low light energy utilization, human Health threats and other issues, to achieve the effect of low price, reduced energy band width, and increased photocatalytic effect
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Embodiment 1
[0016] A nano-titanium dioxide photocatalyst capable of degrading phenolic pollutants in waste water, the preparation method of which comprises the following contents:
[0017] (1) Preparation of composite materials containing graphite oxide powder: Dissolve chitosan in water to make a chitosan aqueous solution with a mass concentration of 3.5g / 100mL, then add acetic acid equivalent to 9% by weight of the chitosan aqueous solution, and stir The gel was obtained in 50 minutes, and then treated at a temperature of 90°C for 7 hours, and the gel solution was obtained after natural cooling; then, graphite oxide powder equivalent to 3% of its weight and 0.5% sodium base were added to the gel solution. To melt the clay, raise the temperature to 60°C, stir at a speed of 900 rpm for 3.5 hours, after natural cooling, dry it for 6 hours at a temperature of 47°C and a humidity of 55%, and then in a nitrogen atmosphere, at 85°C , 1.5MPa and reacted for 4 hours, then ground into powder, pas...
Embodiment 2
[0022] A nano-titanium dioxide photocatalyst capable of degrading phenolic pollutants in waste water, the preparation method of which comprises the following contents:
[0023] (1) Preparation of composite materials containing graphite oxide powder: Dissolve chitosan in water to make a chitosan aqueous solution with a mass concentration of 4g / 100mL, then add acetic acid equivalent to 8% by weight of the chitosan aqueous solution, and stir for 60 The gel was obtained in 1 minute, and then treated at a temperature of 85°C for 6 hours, and the gel solution was obtained after natural cooling; then 2.5% of its weight of graphite oxide powder and 0.8% of sodium base were added to the gel solution. Clay, heated up to 60°C, stirred at 1000 rpm for 4 hours, after natural cooling, dried for 6 hours at a temperature of 46°C and a humidity of 60%, and then in a nitrogen atmosphere, at 90°C, React under the condition of 1.4MPa for 4 hours, then grind into powder, pass through 80 mesh sieve...
Embodiment 3
[0028] A nano-titanium dioxide photocatalyst capable of degrading phenolic pollutants in waste water, the preparation method of which comprises the following contents:
[0029](1) Preparation of composite materials containing graphite oxide powder: Dissolve chitosan in water to make a chitosan aqueous solution with a mass concentration of 3g / 100mL, then add 10% acetic acid equivalent to the weight of the chitosan aqueous solution, and stir for 40 The gel was obtained in 1 minute, and then treated at a temperature of 95°C for 8 hours, and the gel solution was obtained after natural cooling; then 3.5% of its weight of graphite oxide powder and 0.2% of sodium base were added to the gel solution. Clay, heated up to 60°C, stirred at 800 rpm for 3 hours, after natural cooling, dried at 48°C and 50% humidity for 6 hours, then in a nitrogen atmosphere, at 80°C, React under the condition of 1.6MPa for 4 hours, then grind into powder, pass through 80 mesh sieve for later use;
[0030] ...
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