A kind of bismuth vanadate and its preparation method and application
A technology of bismuth vanadate and multi-root bismuth vanadate nanometers, applied in separation methods, chemical instruments and methods, vanadium compounds, etc., can solve the problems of harsh experimental conditions, complicated experimental equipment, cumbersome operation, etc., and achieve low sensitivity , simple synthesis equipment and simple process flow
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Embodiment 1
[0029] The preparation method of bismuth vanadate of the present invention comprises the steps:
[0030] Step 1, bismuth nitrate is added in 2mol / L nitric acid and stirred until completely dissolved, is prepared into liquid A, the molar concentration of bismuth nitrate in liquid A is 0.5mol / L; ammonium metavanadate is added to deionized water, and Heat and stir at 80°C until completely dissolved to form liquid B. In liquid B, the molar concentration of ammonium metavanadate is 0.25mol / L; mix liquid B and liquid A, add water to the mixed solution of bismuth nitrate and vanadium The molar concentration of ammonium acid is 0.0625mol / L, and the pH of the mixed solution is adjusted to be 8 with ammonia water; according to the molar ratio of bismuth vanadate, bismuth nitrate and ammonium metavanadate need to be reacted according to the molar ratio of 1:1;
[0031] Step 2, put the mixed solution still for 1 hour, remove the upper layer solution after standing, and add deionized water...
Embodiment 2
[0035] The preparation method of bismuth vanadate of the present invention comprises the steps:
[0036] Step 1, bismuth nitrate is added in 2mol / L nitric acid and stirred until completely dissolved, is prepared into liquid A, the molar concentration of bismuth nitrate in liquid A is 0.5mol / L; ammonium metavanadate is added to deionized water, and Heat and stir at 80°C until completely dissolved to form liquid B. In liquid B, the molar concentration of ammonium metavanadate is 0.25mol / L; mix liquid B and liquid A, add water to the mixed solution of bismuth nitrate and vanadium The molar concentration of ammonium acid is 0.0625mol / L, and the pH of the mixed solution adjusted with ammonia is 8;
[0037] Step 2, put the mixed solution still for 1 hour, remove the upper layer solution after standing, and add deionized water to wash the insoluble matter; after cleaning, let it stand again, remove the upper layer solution after standing, and wash the remaining insoluble matter once ...
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