Preparation method of boron-nitrogen doped titanium dioxide photocatalyst
A technology of titanium dioxide and photocatalyst, applied in the direction of physical/chemical process catalysts, chemical instruments and methods, chemical/physical processes, etc., can solve the problems of complicated preparation methods, low catalyst activity, high energy consumption, etc., and achieve improved photocatalytic activity and photon utilization efficiency, easy control of reaction conditions, and simple steps
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Embodiment 1
[0034] A preparation method of boron nitrogen doped titanium dioxide photocatalyst, the steps are as follows:
[0035] (1) Under the condition of dry air all the time, take 4.0ml tetra-n-butyl titanate Ti(OBu) under an inert atmosphere or in a glove box 4 Dissolve in 20ml absolute ethanol to form solution A.
[0036] (2) Dissolve 0.2 g of urea and 0.1 g of boric acid in 8 ml of absolute ethanol to form solution B.
[0037] (3) Under the condition of vigorously stirring the solution A, add the solution B dropwise to the solution A.
[0038] (4) Put the mixed solution in a fume hood, ignite it, and carry out the combustion reaction.
[0039] (5) The obtained powder was calcined in a muffle furnace at a temperature of 200° C. for 5 hours to obtain boron nitrogen doped titanium dioxide.
Embodiment 2
[0041] A preparation method of boron nitrogen doped titanium dioxide photocatalyst, the steps are as follows:
[0042] (1) Under the condition of dry air all the time, take 4.0ml tetra-n-butyl titanate Ti(OBu) under an inert atmosphere or in a glove box 4 Dissolve in 20ml absolute ethanol to form solution A.
[0043] (2) Dissolve 0.2 g of urea and 0.1 g of boric acid in 8 ml of absolute ethanol to form solution B.
[0044] (3) Under the condition of vigorously stirring the solution A, add the solution B dropwise to the solution A.
[0045] (4) Put the mixed solution in a fume hood, ignite it, and carry out the combustion reaction.
[0046] (5) The obtained powder was calcined in a muffle furnace at a temperature of 600° C. for 3 hours to obtain boron-nitrogen-doped titanium dioxide.
Embodiment 3
[0048] A preparation method of boron nitrogen doped titanium dioxide photocatalyst, the steps are as follows:
[0049] (1) Under the condition of dry air all the time, take 4.0ml of n-propyl titanate C in an inert atmosphere or in a glove box 12 h 28 o 4 Ti was dissolved in 20 ml absolute ethanol to form solution A.
[0050] (2) Dissolve 0.2 g of urea and 0.1 g of boric acid in 8 ml of absolute ethanol to form solution B.
[0051] (3) Under the condition of vigorously stirring the solution A, add the solution B dropwise to the solution A.
[0052] (4) Put the mixed solution in a fume hood, ignite it, and carry out the combustion reaction.
[0053] (5) directly cooling the powder obtained in step (4) to obtain boron nitrogen doped titanium dioxide.
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