Titanium dioxide/carbon/manganese dioxide composite photo-catalyst material as well as preparation method and application thereof
A manganese dioxide and titanium dioxide technology, which is applied in metal/metal oxide/metal hydroxide catalysts, physical/chemical process catalysts, chemical instruments and methods, etc., to achieve the effects of being beneficial to application, strong photon absorption, and easy to popularize
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[0019] The invention discloses a preparation method of a titanium dioxide / carbon / manganese dioxide composite photocatalyst material, comprising:
[0020] S1: Extract the shell protein in the shell;
[0021] S2: adding the shell protein to the solvent and mixing, and then adding butyl titanate and mixing to obtain a mixed solution;
[0022] S3: subjecting the mixed solution to a solvothermal reaction to obtain a solid, and calcining the solid under anaerobic conditions to obtain TiO 2 / C;
[0023] S4: The TiO 2 / C is added to the potassium permanganate solution for hydrothermal reaction to obtain the titanium dioxide / carbon / manganese dioxide composite photocatalyst material.
[0024] In some embodiments of the present invention, in step S1, the method for extracting shell proteins includes adding a dilute acid solution to the shells, covering the shells, and standing until the shells float on the water surface to separate insoluble proteins.
[0025] In some embodiments of ...
Embodiment 1
[0049] After washing the shells, add an acetic acid solution with a concentration of 5% to 10% to cover the shells, and stand until the shells float on the water surface to separate insoluble proteins. At room temperature, add 0.2 g of shell protein to 60 mL of ethanol solvent, stir until fully mixed, add 3 mL of butyl titanate after stirring, continue to stir until fully mixed, and carry out solvothermal reaction after stirring, the reaction time is 50h, After the reaction, the solid matter is washed and calcined without oxygen to obtain TiO 2 / C. Take 0.75gTiO 2 / C was dispersed in 30 mL of water, stirred until fully mixed, and then hydrothermally reacted after stirring. After the reaction, the solid was washed and dried to obtain TiO 2 / C / MnO 2 . The photocatalytic material has a removal rate of 85% for indoor formaldehyde degradation under visible light for 45 minutes, and a removal rate of 65% for toluene. like figure 1 and 2 As shown, the TiO prepared in this exam...
Embodiment 2
[0051] After washing the shells, add an acetic acid solution with a concentration of 5% to 10% to cover the shells, and stand until the shells float on the water surface to separate insoluble proteins. At room temperature, add 0.4 g of shell protein to 60 mL of ethanol solvent, stir until fully mixed, add 3 mL of butyl titanate after stirring, continue to stir until fully mixed, and carry out solvothermal reaction after stirring, and the reaction time is 50 h, After the reaction, the solid matter is washed and calcined without oxygen to obtain TiO 2 / C. Take 0.75gTiO 2 / C dispersed to 30mL 0.005mol·L -1 KMnO 4 , stir until fully mixed, and then perform hydrothermal reaction after stirring, and wash and dry the solid after the reaction to obtain TiO 2 / C / MnO 2 . The photocatalytic material has a removal rate of 90% for degrading indoor formaldehyde under visible light for 45 minutes, and a removal rate of 80% for toluene.
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