Preparation method of nano bismuth vanadate powder
A nanometer bismuth vanadate and powder technology, applied in the field of photocatalysis, can solve the problems of complex preparation system, high cost and low sample purity, and achieve the effects of simple preparation system, short reaction period and high sample purity
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[0029] This method relates to a kind of preparation method of nanometer bismuth vanadate powder, namely with Bi(NO 3 ) 3 ·5H 2 O and NaVO 3 As raw material, CTAB as surfactant, deionized water as solvent, using hydrothermal method, by controlling hydrothermal temperature, hydrothermal time, surfactant concentration and solvent amount to control the purity, crystallinity and shape of bismuth vanadate powder Maung et al. collected and washed by centrifugation, and finally dried the powder collected by centrifugation at 70-95° C. for 8-16 hours to obtain the final product, namely nano-bismuth vanadate powder.
[0030] The morphology of the sample powder was observed by scanning electron microscopy (SEM); the crystal structure of the sample powder was detected by X-ray diffraction (XRD).
[0031] The following examples were carried out according to the above method, and the reagents used in the examples are shown in Table 1.
[0033]
Embodiment 1
[0035] (1) Weigh 2mmol of Bi(NO 3 ) 3 ·5H 2 O, 2mmol of NaVO 3 and 0.2mmol of CTAB, dissolved in 60mL of deionized water at the same time, can be placed directly in the PTFE liner. After stirring with a magnetic stirrer for 5 min, the above solution was mixed into a stable orange-yellow solution. Then put it into an autoclave, and then treat it in a high-temperature drying oven at 160° C. for 24 hours.
[0036] (2) The product obtained above was centrifuged and washed 3 times at a speed of 4000r / min for 5 minutes each time, and then dried in a drying oven at 80° C. for 12 hours to obtain a bright yellow powder (nano-bismuth vanadate powder).
Embodiment 2
[0038] (1) Weigh 2mmol of Bi(NO 3 ) 3 ·5H 2 O, 2mmol of NaVO 3 and 0.2mmol of CTAB, dissolved in 60mL of deionized water at the same time, can be placed directly in the PTFE liner. After stirring with a magnetic stirrer for 5 min, the above solution was mixed into a stable orange-yellow solution. Then put it into an autoclave, and then treat it in a high-temperature drying oven at 180° C. for 24 hours.
[0039] (2) The product obtained above was centrifuged and washed 3 times at a speed of 4000r / min for 5 minutes each time, and then dried in a drying oven at 80° C. for 12 hours to obtain a bright yellow powder (nano-bismuth vanadate powder).
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