A kind of p-n heterojunction bivo4/mos2 composite photocatalyst and preparation method thereof
A composite light and catalyst technology, applied in physical/chemical process catalysts, chemical instruments and methods, chemical/physical processes, etc., to achieve good catalytic performance and efficient degradation effects
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Embodiment 1
[0022] (1) Add 0.7g NH 4 VO 3 and 2.9g Bi(NO 3 ) 3 Add to 50mL nitric acid solution with a molar concentration of 2.0mol / L, and then sonicate for 30min;
[0023] (2) Adjust the pH value of the solution obtained in step (1) to 2 with ammonia water to form a yellow precipitate, and then age it for 2 hours;
[0024] (3) Transfer the suspension obtained in step (2) to a polytetrafluoroethylene-lined high-pressure hydrothermal reaction kettle for hydrothermal reaction at 200°C for 24 hours, then naturally cool to room temperature and filter, wash with water and ethanol three times respectively , placed in a constant temperature drying oven at 80 ° C for 12 h to obtain butterfly-shaped BiVO 4 Photocatalyst, labeled BV.
[0025] The BiVO prepared in this embodiment 4 The photocatalyst degrades 10mg / L rhodamine B dye wastewater under light, and the degradation rate is 79.0% within 5 hours.
Embodiment 2
[0027] (1) Add 0.7g NH 4 VO 3 and 2.9g Bi(NO 3 ) 3 Add to 50mL nitric acid solution with a molar concentration of 2.0mol / L, and then sonicate for 30min;
[0028] (2) Adjust the pH value of the solution obtained in step (1) to 2 with ammonia water to form a yellow precipitate, and then age it for 2 hours;
[0029] (3) Transfer the suspension obtained in step (2) to a polytetrafluoroethylene-lined high-pressure hydrothermal reaction kettle for hydrothermal reaction at 200°C for 24 hours, then naturally cool to room temperature and filter, wash with water and ethanol three times respectively , placed in a constant temperature drying oven at 80 ° C for 12 h to obtain butterfly-shaped BiVO 4 catalyst of light;
[0030] (4) Add 0.019g (NH 4 ) 6 MoO 7 o 24 4H 2 0 and 0.15g thiourea were added to water and stirred for 30min to obtain a dark green solution;
[0031] (5) Add 0.12g of BiVO prepared in step (3) to the dark green solution obtained in step (4) 4 The photocatalys...
Embodiment 3
[0034] (1) Add 0.7g NH 4 VO 3 and 2.9g Bi(NO 3 ) 3 Add to 50mL nitric acid solution with a molar concentration of 2.0mol / L, and then sonicate for 30min;
[0035] (2) Adjust the pH value of the solution obtained in step (1) to 2 with ammonia water to form a yellow precipitate, and then age it for 2 hours;
[0036] (3) Transfer the suspension obtained in step (2) to a polytetrafluoroethylene-lined high-pressure hydrothermal reaction kettle for hydrothermal reaction at 200°C for 24 hours, then naturally cool to room temperature and filter, wash with water and ethanol three times each , placed in a constant temperature drying oven at 80 ° C for 12 h to obtain butterfly-shaped BiVO 4 catalyst of light;
[0037] (4) Add 0.047g (NH 4 ) 6 MoO 7 o 24 4H 2 O and 0.37g thiourea were added to water and stirred for 30min to obtain a dark green solution;
[0038] (5) Add 0.12g of BiVO prepared in step (3) to the dark green solution obtained in step (4) 4 The photocatalyst was then...
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