Titanium dioxide air purifying paper doped with rhodium ions and electrostatic spinning preparation method thereof
An electrospinning method, titanium dioxide technology, applied in the direction of paper, papermaking, paper coating, etc.
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Embodiment 1
[0026] Example 1: Isopropyl titanate (purity 98%), polyvinyl acetate (solid content 55%), acetic acid (purity 99.6%), ethanol (purity 99%) were used in a mass ratio of 0.9:1:1.1:2.9 Proportional mixing, adding rhodium trichloride (mass ratio of rhodium element to titanium element = 1:100), magnetic stirring for 3.5 hours (rotating speed 500 rpm), and standing for 2 hours. Electrospinning device (10ml syringe volume, 0.5mm needle diameter) was used for electrospinning at room temperature, the relative humidity was controlled at 50%, the distance from the needle to the collecting plate was 18cm, the spinning voltage was 16kV, and the flow rate was 60μL / min. The collected spun fibers are calcined in a muffle furnace. The muffle furnace has a heating rate of 15K / min, heated to 200°C for 4 hours, and then heated to 580°C at a heating rate of 15K / min, and held for 40 minutes. The spun fiber is cooled and ground at room temperature to obtain nanometer titanium dioxide powder with a pa...
Embodiment 2
[0027] Example 2: Isopropyl titanate (purity 99%), polyvinyl acetate (solid content 60%), acetic acid (purity 99.5%), ethanol (purity 99%) in a mass ratio of 1:0.9:0.9:3.1 Proportional mixing, adding rhodium trichloride (rhodium element to titanium element mass ratio = 0.1: 100), magnetically stirring for 4 hours (rotating speed 600 rpm), and standing for 2 hours. Electrospinning is carried out at room temperature using an electrospinning device (injector volume 10ml, needle diameter 0.5mm), relative humidity is controlled at 50%, distance from needle to collection plate is 19cm, spinning voltage is 17kV, and flow rate is 70μL / min. The collected spun fibers are calcined in a muffle furnace, the heating rate is 10K / min, the temperature is raised to 190°C for 3.5 hours, and then the temperature is raised to 580°C with a heating rate of 15K / min, and the temperature is kept for 40 minutes. The sample is cooled and ground at room temperature. Nano titanium dioxide powder with a part...
Embodiment 3
[0028] Example 3: Isopropyl titanate (purity 99%), polyvinyl acetate (solid content 55%), acetic acid (purity 99.5%), ethanol (purity 99%) in a mass ratio of 0.9:1:0.9:3.1 Proportional mixing, adding rhodium trichloride (rhodium element to titanium element mass ratio = 0.5: 100), magnetically stirring for 4 hours (rotating speed 800 rpm), and standing for 1.5 hours. Electrospinning device (10ml syringe volume, 0.5mm needle diameter) is used for electrospinning at room temperature, the relative humidity is controlled at 52%, the distance from the needle to the collection plate is 19cm, the spinning voltage is 17kV, and the flow rate is 60μL / min. The collected spun fibers are calcined in a muffle furnace, the heating rate is 10K / min, the temperature is raised to 190°C for 4 hours, and the temperature is raised to 570°C with a heating rate of 15K / min, and the temperature is maintained for 40 minutes. The sample is cooled and ground at room temperature. Titanium dioxide powder with...
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