Biomimetic synthesis method of high-activity nanometer bismuth phosphate photocatalyst
A photocatalyst and biomimetic synthesis technology, applied in the field of photocatalysis, can solve the problems of difficult preparation of nanoparticles and achieve high photocatalytic activity
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Embodiment 1
[0010] Dissolve 0.685g of soluble starch in 1mol / L nitric acid solution, stir well, add 1mmol of bismuth nitrate, and continue stirring for 2h to obtain a mixed solution; add 1mmol of sodium dihydrogen phosphate to the mixed solution, stir for 0.5h, add Adjust pH=1, continue to stir for 0.5h, transfer to hydrothermal reaction kettle for 24h at 180°C, centrifuge, wash, vacuum dry at 60°C for 4h, and then calcinate at 450°C for 2h to obtain highly active nano phosphoric acid Bismuth photocatalyst 1, figure 1 It is the scanning electron micrograph of the highly active nano bismuth phosphate photocatalyst that the present embodiment makes, figure 2 It is a transmission electron microscope image of the highly active nanometer bismuth phosphate photocatalyst prepared in the present embodiment, and the particle diameter of the bismuth phosphate photocatalyst 1 obtained can be seen from the figure to be 10-50nm.
Embodiment 2
[0012] Dissolve 0.343g of soluble starch in 1mol / L nitric acid solution, stir evenly, add 1mmol of bismuth nitrate, and continue stirring for 2h to obtain a mixed solution; add 1mmol of ammonium dihydrogen phosphate to the mixed solution, stir for 0.5h, add Adjust pH=4, continue to stir for 0.5h, transfer to hydrothermal reaction kettle at 180°C for 24h, centrifuge, wash, vacuum dry at 60°C for 4h, and then calcinate at 400°C for 2h to obtain highly active nano phosphoric acid Bismuth photocatalyst 2.
Embodiment 3
[0014] Dissolve 1.37g of soluble starch in 1mol / L nitric acid solution, stir evenly, add 1mmol of bismuth nitrate, and continue stirring for 2h to obtain a mixed solution; add 1mmol of disodium hydrogen phosphate to the mixed solution, stir for 0.5h, add Adjust pH=7, continue to stir for 0.5h, transfer to hydrothermal reaction kettle for 6h at 210°C, centrifuge, wash, dry in vacuum at 60°C for 4h, and then calcinate at 500°C for 2h to produce highly active nano phosphoric acid Bismuth photocatalyst3.
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