Silver phosphate/silver bromide heterojunction nano-particle as well as preparation method and application thereof
A nanoparticle and heterojunction technology, applied in the field of nanomaterials, can solve problems such as limited applications, and achieve the effects of improved efficiency, excellent photocatalytic performance and stability
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Embodiment 1
[0022] (1) Weigh 1.69g AgNO 3 Dissolve in 90mL of mixed solvent of dimethyl sulfoxide and water (volume ratio is 1:2), add 0.2g of hexadecyltrimethylammonium bromide at the same time, stir vigorously until completely dissolved, then add 0.473g of Na 2 HPO 4 Dissolve in 10mL of the same mixed solvent, add dropwise to the above solution and stir well for 1h until a pale yellow precipitate occurs.
[0023] (2) Weigh again 0.721g NaBr and dissolve it in 10mL of the same mixed solvent, dropwise dropwise into the reaction solution in step (1), stir vigorously for 2h until the dispersion is uniform, and a light green flocculent precipitate is obtained. After static precipitation, it was washed and centrifuged with deionized water and absolute ethanol several times, and dried at 60°C to obtain silver phosphate / silver bromide heterojunction nanoparticles with a yield of 98%, silver phosphate content of 20%, and the balance to silver bromide.
Embodiment 2
[0025] (1) Weigh 1.69g AgNO 3 Dissolve in 90mL mixed solvent of dimethyl sulfoxide and ethanol (1:1 volume ratio), add 0.2g polyethylene glycol, stir vigorously until completely dissolved, then add 0.361g NaH 2 PO 4 Dissolve in 10mL of the same mixed solvent, add dropwise to the above solution and stir well for 1h until a pale yellow precipitate occurs.
[0026] (2) Weigh again 2.4g KBr and dissolve it in 10mL of the same mixed solvent, dropwise dropwise into the reaction solution in step (1), stir vigorously for 2h until the dispersion is uniform, and a light green flocculent precipitate is obtained. After static precipitation, it was washed and centrifuged several times with deionized water and absolute ethanol, and dried at 60°C to obtain silver phosphate / silver bromide heterojunction nanoparticles. The yield is 97%, the silver phosphate content is 30%, and the balance is silver bromide.
Embodiment 3
[0028] (1) Weigh 1.69g AgNO 3 Dissolve in 90mL mixed solvent of dimethyl sulfoxide and ethylene glycol (volume ratio 1:8), add 0.15g polyvinylpyrrolidone and stir vigorously until completely dissolved, then add 0.39g (NH 4 ) 2 HPO 4 Dissolve in 10mL dimethyl sulfoxide and ethylene glycol solution, dropwise dropwise into the above solution and stir well for 1h until a light yellow precipitate occurs.
[0029] (2) Weigh again 0.875g NaBr and dissolve it in 10mL of the same mixed solvent, drop it dropwise into the solution (1) and stir vigorously for 2h until it is uniformly dispersed, and a light green flocculent precipitate is obtained. After static precipitation, it was washed and centrifuged several times with deionized water and absolute ethanol, and dried at 60° C. to obtain silver phosphate / silver bromide heterojunction nanoparticles. The yield is 97%, the silver phosphate content is 10%, and the balance is silver bromide.
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