Co-modified bismuth molybdate-based composite photocatalytic material with silver and oxygen defects and its preparation method
A technology of composite photocatalysis and photocatalytic materials, which is applied in the field of industrial catalytic preparation, can solve the problem of low visible light catalytic activity of bismuth molybdate, and achieve the effects of wide visible light response range, convenient operation and simple preparation process
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Embodiment 1
[0053] To prepare the silver and oxygen defect co-modified bismuth molybdate-based composite photocatalytic material of the present invention, it is specifically implemented according to the following steps:
[0054] Step 1.1, first measure 1.3mmol of Bi(NO 3 ) 3 ·5H 2 O was dissolved in 13ml of ethylene glycol solution, and then 0.65mmol of Na was added to the ethylene glycol solution 2 MoO 4 2H 2 O, finally stir until a transparent solution is obtained;
[0055] Step 1.2, first add 32.5mL of absolute ethanol to the transparent solution obtained in step 1.1 and stir for 1 hour, then transfer it to the reaction kettle and seal it, and then put the reaction kettle into an electric heating constant temperature blast drying box, Reaction at 140°C for 10 hours to obtain mixed solution A. After the reaction, the mixed solution A was naturally cooled to room temperature, then centrifuged and washed, and finally vacuum-dried at 60°C for 1 hour to obtain molybdic acid powder Bis...
Embodiment 2
[0059] To prepare the silver and oxygen defect co-modified bismuth molybdate-based composite photocatalytic material of the present invention, it is specifically implemented according to the following steps:
[0060] Step 1.1, first measure 1.3mmol of Bi(NO 3 ) 3 ·5H 2 O was dissolved in 13ml of ethylene glycol solution, and then 0.65mmol of Na was added to the ethylene glycol solution 2 MoO 4 2H 2 O, finally stir until a transparent solution is obtained;
[0061] Step 1.2, first add 32.5mL of absolute ethanol to the transparent solution obtained in step 1.1 and stir for 1 hour, then transfer it to the reaction kettle and seal it, and then put the reaction kettle into an electric heating constant temperature blast drying box, Reaction at 140°C for 10 hours to obtain mixed solution A. After the reaction, the mixed solution A was naturally cooled to room temperature, then centrifuged and washed, and finally vacuum-dried at 60°C for 1 hour to obtain molybdic acid powder Bis...
Embodiment 3
[0065] To prepare the silver and oxygen defect co-modified bismuth molybdate-based composite photocatalytic material of the present invention, it is specifically implemented according to the following steps:
[0066] Step 1.1, first measure 1.3mmol of Bi(NO 3 ) 3 ·5H 2 O was dissolved in 13ml of ethylene glycol solution, and then 0.65mmol of Na was added to the ethylene glycol solution 2 MoO 4 2H 2 O, finally stir until a transparent solution is obtained;
[0067] Step 1.2, first add 32.5mL of absolute ethanol to the transparent solution obtained in step 1.1 and stir for 1 hour, then transfer it to the reaction kettle and seal it, and then put the reaction kettle into an electric heating constant temperature blast drying box, React at 160°C for 12 hours to obtain mixed solution A. After the reaction is completed, cool mixed solution A to room temperature naturally, then centrifuge and wash, and finally vacuum dry at 80°C for 1h-3h to obtain powder. Bismuth molybdate phot...
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