Method for preparing loofah sponge supported nanometer titania photocatalyst
A nano-titanium dioxide, photocatalyst technology, applied in catalyst activation/preparation, physical/chemical process catalysts, chemical instruments and methods, etc., can solve the problems of complex and difficult recovery process, achieve high catalytic activity, simple operation, good physical and chemical The effect of stability
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Embodiment 1
[0019] (1) Loofah pretreatment: Wash the loofah with water to remove soil and impurities, put it in a container and soak it in water for 24 hours to remove non-fibrous substances, cut the loofah into small pieces, wash with water, dry and crush to obtain the pre-treated loofah processing loofah;
[0020] (2) Oxidation treatment of loofah: In the reactor, add deionized water: 46mL, potassium dichromate: 12g, slowly add 15mL of concentrated sulfuric acid after dissolving, stir and cool to room temperature, and then pretreat 15g Add loofah, soak at room temperature for 2.5 hours, wash with deionized water until neutral, separate solid from liquid, then soak in isopropanol for 5 hours, take it out and dry it to obtain oxidized loofah;
[0021] (3) Preparation of nano-titanium dioxide photocatalyst supported by loofah. In the reactor, add deionized water: 83mL, nano-titanium dioxide powder: 7g, oxidized loofah: 10g, stir well and place in 20kHz ultrasonic wave for 80min , then tra...
Embodiment 2
[0023] (1) Loofah pretreatment: Wash the loofah with water to remove soil and impurities, put it in a container and soak it in water for 24 hours to remove non-fibrous substances, cut the loofah into small pieces, wash with water, dry and crush to obtain the pre-treated loofah processing loofah;
[0024] (2) Loofah oxidation treatment: In the reactor, add deionized water: 50mL, potassium dichromate: 10g, slowly add 16mL of concentrated sulfuric acid after dissolving, stir and cool to room temperature, and then add 10g of pretreatment Add loofah, soak at room temperature for 2 hours, wash with deionized water until neutral, separate solid and liquid, then soak in isopropanol for 4 hours, take it out and dry, and get oxidized loofah;
[0025] (3) Preparation of nano-titanium dioxide photocatalyst supported by loofah. In the reactor, add deionized water: 86mL, nano-titanium dioxide powder: 5g, oxidized loofah: 9g, stir well and place in 20kHz ultrasonic wave for 70min , then tra...
Embodiment 3
[0027] (1) Loofah pretreatment: Wash the loofah with water to remove soil and impurities, put it in a container and soak it in water for 24 hours to remove non-fibrous substances, cut the loofah into small pieces, wash with water, dry and crush to obtain the pre-treated loofah processing loofah;
[0028] (2) Loofah oxidation treatment: In the reactor, add deionized water: 42mL, potassium dichromate: 15g, slowly add 17mL of concentrated sulfuric acid after dissolving, stir and cool to room temperature, and then pretreat 12g Add loofah, soak at room temperature for 3 hours, wash with deionized water until neutral, separate solid from liquid, then soak in isopropanol for 6 hours, take it out and dry it to obtain oxidized loofah;
[0029] (3) Preparation of nano-titanium dioxide photocatalyst supported by loofah. In the reactor, add deionized water: 80mL, nano-titanium dioxide powder: 8g, oxidized loofah: 12g, stir well and place in 20kHz ultrasonic wave for 60min , then transfer...
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