Visible-light-driven photocatalyst for degrading dye in wastewater, and preparation and application thereof

[0036] At room temperature, dissolve 3.1 g of cetyltrimethylammonium bromide in a mixture of 250 ml of ethanol and deionized water (the volume ratio of absolute ethanol and deionized water is 1:4) to obtain solution A After 30 minutes, in solution A, add dropwise 50 ml25% ammoniacal liquor successively, 13 milliliters of tetraethyl orthosilicate and 0.2 milliliters of titanium isopropoxides, continue stirring at room temperature after 4 hours, obtain solid substance B by suction filtration, then solid Substance B was dried at 110°C for 5 hours, calcined at 500°C for 6 hours, and cooled to obtain mesoporous MCM-48 (Ti-MCM-48) solid particles with Ti atoms in the skeleton.

[0037] In 15 ml deionized water, add 0.2 g dicyandiamide, 0.02 g CuCl 2 ·H 2 O and 1 g of the Ti-MCM-48 obtained above were stirred at 100 °C for 2 hours, and the blue solid powder C was obtained by ordinary distillation; then the obtained blue solid powder C was dried at 110 °C for 5 h, and then heated at 550

[0044] At room temperature, dissolve 3.1 g of cetyltrimethylammonium bromide in a mixture of 250 ml of ethanol and deionized water (the volume ratio of absolute ethanol and deionized water is 1:4) to obtain solution A After 30 minutes, in solution A, add dropwise 50 ml25% ammoniacal liquor successively, 13 milliliters of ethyl orthosilicate and 0.032 milliliters of titanium isopropoxides, continue to stir at room temperature after 4 hours, get solid substance B by suction filtration, then solid Substance B was dried at 110°C for 5 hours, calcined at 500°C for 6 hours, and cooled to obtain mesoporous MCM-48 (Ti-MCM-48) solid particles with Ti atoms in the skeleton.

[0045] In 15 ml deionized water, add 0.2 g dicyandiamide, 0.02 g CuCl 2 ·H 2 O and 1 g of the Ti-MCM-48 obtained above were stirred at 100 °C for 2 hours, and the blue solid powder C was obtained through ordinary distillation. Then the obtained blue solid powder C was dried at 110 °C for 5 h, calcined at 550 °C for

[0048] At room temperature, dissolve 3.1 g of cetyltrimethylammonium bromide in a mixture of 250 ml of ethanol and deionized water (the volume ratio of absolute ethanol and deionized water is 1:4) to obtain solution A After 30 minutes, in solution A, add dropwise 50 ml25% ammoniacal liquor successively, 13 milliliters of ethyl orthosilicate and 0.32 milliliters of titanium isopropoxides, continue to stir at room temperature after 4 hours, get solid substance B by suction filtration, then solid Substance B was dried at 110°C for 5 hours, calcined at 500°C for 6 hours, and cooled to obtain mesoporous MCM-48 (Ti-MCM-48) solid particles with Ti atoms in the skeleton.

[0049] In 15 ml deionized water, add 0.2 g dicyandiamide, 0.02 g CuCl 2 ·H 2 O and 1 g of the Ti-MCM-48 obtained above were stirred at 100 °C for 2 hours, and the blue solid powder C was obtained by ordinary distillation; then the obtained blue solid powder C was dried at 110 °C for 5 h, and then dried at 550 °C under