Preparation method of titanium oxide (TiO2) - silicon dioxide (SiO2) visible light compound light catalytic agent
A composite light and catalyst technology, applied in chemical instruments and methods, physical/chemical process catalysts, chemical/physical processes, etc., to achieve the effects of high output and yield, easy scale-up, and wide source of raw materials
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[0027] Example 1
[0028] A kind of TiO 2 -SiO 2 The preparation method of visible light composite photocatalyst includes the following steps:
[0029] (1) Dissolve TBOT and TEOS with a volume ratio of 4:1 in absolute ethanol, where the volume ratio of TBOT to absolute ethanol is 1:200; then add ammonium acetate to the absolute ethanol and stir to make it fully Dissolve, the addition amount of ammonium acetate is 0.003g of ammonium acetate per 1ml of absolute ethanol; then disperse C microspheres in absolute ethanol, and the addition amount of C microspheres is 0.008g per 1ml of absolute ethanol. C microspheres are fully dissolved by ultrasonic treatment, and finally formulated into a black suspension;
[0030] (2) Transfer the black suspension prepared in step (1) to a high-pressure hydrothermal reactor, and react hydrothermally at 140°C for 24 hours, then allow the reaction solution to settle and cool to room temperature; then the precipitated solid in the reaction solution After...
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[0032] Example 2
[0033] A kind of TiO 2 -SiO 2 The preparation method of visible light composite photocatalyst includes the following steps:
[0034] (1) Dissolve TBOT and TEOS with a volume ratio of 1:1 in absolute ethanol, where the volume ratio of TBOT to absolute ethanol is 1:100; then add ammonium acetate to the absolute ethanol and stir to make it fully Dissolve, the addition amount of ammonium acetate is 0.05g ammonium acetate per 1ml of absolute ethanol; then disperse C microspheres in absolute ethanol, and the addition amount of C microspheres is 0.005g per 1ml absolute ethanol. C microspheres are fully dissolved by ultrasonic treatment, and finally formulated into a black suspension;
[0035] (2) Transfer the black suspension prepared in step (1) to a high-pressure hydrothermal reactor, and react hydrothermally at 120°C for 20 hours, then allow the reaction solution to settle and cool to room temperature; then the precipitated solid in the reaction solution After the pr...
Example Embodiment
[0037] Example 3
[0038] A kind of TiO 2 -SiO 2 The preparation method of visible light composite photocatalyst includes the following steps:
[0039] (1) Dissolve TBOT and TEOS with a volume ratio of 1:2 in absolute ethanol, where the volume ratio of TBOT to absolute ethanol is 1:150; then add ammonium acetate to the absolute ethanol and stir to make it fully Dissolve, the amount of ammonium acetate added is 0.001g of ammonium acetate per 1ml of absolute ethanol; then C microspheres are dispersed in absolute ethanol, and the amount of C microspheres added is 0.01g per 1ml of absolute ethanol. C microspheres are fully dissolved by ultrasonic treatment, and finally formulated into a black suspension;
[0040] (2) Transfer the black suspension prepared in step (1) to a high-pressure hydrothermal reactor, and react hydrothermally at 160°C for 15 hours, then allow the reaction solution to settle and cool to room temperature; then the precipitated solid in the reaction solution After t...
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