Method for synthesizing nitrogen-doped bismuth vanadate photocatalyst and application thereof
A photocatalyst, bismuth vanadate technology, applied in chemical instruments and methods, physical/chemical process catalysts, chemical/physical processes, etc., can solve the problem of photocatalytic efficiency to be improved, and achieve fast reaction speed, great universality, Simple to use effects
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Embodiment 1
[0025] Embodiment 1: a kind of method of nitrogen-doped bismuth vanadate photocatalyst, comprises the following steps:
[0026] Step 1: Dissolve 2.5mmol bismuth nitrate pentahydrate in 2mol / L concentrated nitric acid, add a certain amount of polyvinylpyrrolidone, and stir magnetically for 30 minutes to obtain solution A; dissolve 2.5mmol ammonium metavanadate in 2mol / L ammonia solution , add urea according to the molar ratio of N to Bi of 0.5:1, and stir magnetically for 30 minutes to obtain solution B;
[0027] Step 2: Slowly add solution A to solution B, and continue magnetic stirring for 1 h after mixing. Add concentrated ammonia water dropwise to adjust the pH of the solution to about 7, sonicate for 30 minutes, and then perform magnetic stirring for 1 hour to obtain the precursor solution;
[0028] Step 3: Add the precursor solution into the reaction kettle lined with polytetrafluoroethylene, put the reaction kettle into the oven for heating, set the heating temperature ...
Embodiment 2
[0031] Embodiment 2: a kind of method of nitrogen-doped bismuth vanadate photocatalyst, comprises the following steps:
[0032] Step 1: Dissolve 2.5mmol bismuth nitrate pentahydrate in 2mol / L concentrated nitric acid, add a certain amount of polyvinylpyrrolidone, and stir magnetically for 30 minutes to obtain solution A; dissolve 2.5mmol ammonium metavanadate in 2mol / L ammonia solution , urea was added according to the molar ratio of N and Bi being 1:1, and magnetically stirred for 30 minutes to obtain solution B;
[0033] Step 2: Slowly add solution A to solution B, and continue magnetic stirring for 1 h after mixing. Add concentrated ammonia water dropwise to adjust the pH of the solution to about 7, sonicate for 30 minutes, and then perform magnetic stirring for 1 hour to obtain the precursor solution;
[0034] Step 3: Add the precursor solution into the reaction kettle lined with polytetrafluoroethylene, put the reaction kettle into the oven for heating, set the heating t...
Embodiment 3
[0037] Embodiment 3: a kind of method of nitrogen-doped bismuth vanadate photocatalyst, comprises the following steps:
[0038]Step 1: Dissolve 2.5mmol bismuth nitrate pentahydrate in 2mol / L concentrated nitric acid, add a certain amount of polyvinylpyrrolidone, and stir magnetically for 30 minutes to obtain solution A; dissolve 2.5mmol ammonium metavanadate in 2mol / L ammonia solution In, urea was added according to the molar ratio of N and Bi being 2:1, and magnetically stirred for 30 minutes to obtain solution B;
[0039] Step 2: Slowly add solution A to solution B, and continue magnetic stirring for 1 h after mixing. Add concentrated ammonia water dropwise to adjust the pH of the solution to about 7, sonicate for 30 minutes, and then perform magnetic stirring for 1 hour to obtain the precursor solution;
[0040] Step 3: Add the precursor solution into the reaction kettle lined with polytetrafluoroethylene, put the reaction kettle into the oven for heating, set the heating ...
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