An ultra-thin pbbio with oxygen-enriched defects 2 Preparation method and use of br nanosheets
A nanosheet and ultra-thin technology, applied in chemical instruments and methods, chemical/physical processes, light water/sewage treatment, etc., can solve the problems of lack of literature and patent reports
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Embodiment 1
[0032] PbO 2 The preparation of Br catalyst and its photocatalytic performance research include the following steps:
[0033] Take 0.5mmol of lead nitrate, 0.5mmol of bismuth nitrate and 0.2g of polyvinylpyrrolidone into 30mL of mannitol aqueous solution (0.1mol / L) to form solution A. In another container, take 0.5 mmol of 1-hexadecyl-3-methylimidazole bromide and dissolve it in 10 mL of absolute ethanol to form solution B. Solution B was added dropwise to solution A, and the resulting mixed solution was stirred for 30 minutes, then poured into a 50mL autoclave equipped with a polytetrafluoroethylene inner village, and reacted at 160°C for 24 hours. Then the square should be cooled to room temperature, the precipitate was centrifuged, washed three times with water and absolute ethanol, and the final product was dried at 60°C for 12 hours to obtain ultra-thin PbBiO with oxygen-rich defects. 2 Br nanosheets (ROV-PbBiO 2 Br).
Embodiment 2
[0035] Take 0.5g oxygen-rich defect ultra-thin PbBiO 2 The Br nanosheets were dispersed into 20 mL of deionized water by ultrasound and stirring, and the obtained mixed suspension was poured into a 25 mL autoclave equipped with a polytetrafluoroethylene inner village, and reacted at 140 °C for 12 hours. Then the square should be cooled to room temperature, the precipitate was centrifuged, washed three times with water and absolute ethanol, and the final product was dried at 60°C for 12 hours to obtain ultra-thin PbBiO with few oxygen defects. 2 Br nanosheets (POV-PbBiO 2 Br).
Embodiment 3
[0037]Take 0.5mmol of lead nitrate, 0.5mmol of bismuth nitrate and 0.2g of polyvinylpyrrolidone into 30mL of mannitol aqueous solution (0.1mol / L) to form solution A. In another container, take 0.5 mmol of 1-hexadecyl-3-methylimidazole bromide and dissolve it in 10 mL of absolute ethanol to form solution B. Solution B was added dropwise to solution A to obtain solution C. Take 5mL of ammonia water and add it dropwise to solution C. After stirring the resulting mixed solution for 30 minutes, pour the mixed solution into a 50mL autoclave equipped with a polytetrafluoroethylene inner village, and react at 180°C for 24 hours. Then cool the square reactor to room temperature, centrifuge the precipitate, wash three times with water and absolute ethanol, and dry the final product at 60°C for 12 hours to obtain the bulk PbBiO 2 Br nanoparticles (Bulk-PbBiO 2 Br).
[0038] figure 1 For the PbBiO prepared by Examples 1 to 3 of the present invention 2 XRD pattern of Br. It can be se...
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