A hollow nanoparticle titanium dioxide/black phosphorene photothermal catalyst and its preparation method and application
A hollow nano, titanium dioxide technology, applied in the direction of physical/chemical process catalysts, chemical instruments and methods, separation methods, etc., can solve the problem of low quantum yield of composite speed photocatalysts, no catalytic effect of photothermal synergy, and inability to improve photocatalysis Efficiency and other issues, to achieve the effect of broadening the photoresponse range, improving the catalytic effect, and mild preparation conditions
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Embodiment 1
[0020] A Hollow Nanoparticle Titanium Dioxide / Black Phosphorene Photothermal Catalyst TiO 2 / BP@In 2 o 3 The preparation method of / BP: (1) Disperse 20mg of black phosphorus (BP) in 80ml of N-methylpyrrolidone (NMP), add 80mg of NaOH, after ultrasonic crushing in 5°C cold cycle for 5h (450W power), in N 2 Under the conditions of protection and reflux of condensed water at 5°C, oil bath at 140°C for 6h, and centrifuge at 7000rpm for 20min. The supernatant is BP quantum dots; (2) Solution A: Dissolve 100mg HPC in 20mL ethanol, sonicate for 15min until all dissolved, add 200mg SiO 2 powder (particle size about 15nm) and 0.21mL pure water, cover with plastic wrap, and stir thoroughly for 20min. Solution B: Dissolve 2.1g (about 2.1mL) of tetrabutyl titanate (TBOT) in 10mL of ethanol, then add 20mL of BP quantum dot solution, and ultrasonically disperse for 5min. Under magnetic stirring, add liquid B to liquid A drop by drop, put it into an autoclave, and heat it at 200°C for 24...
Embodiment 2
[0022] Titanium dioxide / black phosphorene photothermal catalyst TiO with multi-shell hollow nanoparticles 2 / BP@In 2 o 3 The preparation method of / BP: (1) Disperse 20mg of black phosphorus (BP) in 80ml of N-methylpyrrolidone (NMP), add 80mg of NaOH, after ultrasonic crushing in 5°C cold cycle for 5h (450W power), in N 2 Under the conditions of protection and reflux of condensed water at 5°C, oil bath at 140°C for 6h, and centrifuge at 7000rpm for 20min. The supernatant is BP quantum dots; (2) Solution A: Dissolve 100mg HPC in 20mL ethanol, ultrasonically break for 15min until all dissolved, add 200mg SiO 2powder (particle size about 15nm) and 0.21mL pure water, cover with plastic wrap, and stir thoroughly for 20min. Solution B: Dissolve 2.1g (about 2.1mL) of tetrabutyl titanate (TBOT) in 10mL of ethanol, then add 20mL of BP quantum dot solution, and ultrasonically disperse for 5min. Under magnetic stirring, add liquid B to liquid A drop by drop, put it into an autoclave, ...
Embodiment 3
[0024] Titanium dioxide / black phosphorene photothermal catalyst TiO with multi-shell hollow nanoparticles 2 / BP@In 2 o 3 The preparation method of / BP: (1) Disperse 20mg of black phosphorus (BP) in 80ml of N-methylpyrrolidone (NMP), add 80mg of NaOH, after ultrasonic crushing in 5°C cold cycle for 5h (450W power), in N 2 Under the conditions of protection and reflux of condensed water at 5°C, oil bath at 140°C for 6h, and centrifuge at 7000rpm for 20min. The supernatant is BP quantum dots; (2) Solution A: Dissolve 100mg HPC in 20mL ethanol, ultrasonically break for 15min until all dissolved, add 200mg SiO 2 powder (particle size about 15nm) and 0.21mL pure water, cover with plastic wrap, and stir thoroughly for 20min. Solution B: Dissolve 2.1g (about 2.1mL) of tetrabutyl titanate (TBOT) in 10mL of ethanol, then add 20mL of BP quantum dot solution, and ultrasonically disperse for 5min. Under magnetic stirring, add liquid B to liquid A drop by drop, put it into an autoclave,...
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