Preparation method of a photocatalytic system with high photocatalytic efficiency and stability
A technology of catalytic efficiency and stability, applied in chemical instruments and methods, physical/chemical process catalysts, chemical/physical processes, etc., can solve the problems of poor stability, low efficiency, high cost, etc., and achieve improved catalytic performance Efficiency and stability, simple experimental steps, and the effect of promoting transfer
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Embodiment 1
[0029] A kind of Co with improved photocatalytic efficiency and photocatalyst stability 4 The preparation method of N promoter, comprises the steps:
[0030] 1) 0.5g CoCl 2 Put the powder, 2g of TaON powder and 5g of KCl powder into the porcelain boat at the same time, and then put the porcelain boat into the tube furnace.
[0031] 2) Feed ammonia gas, at 150sccm NH 3 Nitriding was carried out at 700°C for 10 h under the flow rate, and then cooled down to room temperature naturally to obtain a nitrided product.
[0032] 3) After the nitriding product was washed with deionized water several times, excess salt and by-products were removed, and vacuum-dried to obtain Co 4 N promoter.
[0033] figure 1 For the preparation of Co 4 N co-catalyst XRD pattern, it can be seen from the figure that the co-catalyst has Co 4 The corresponding peak of N, it can be determined that the cocatalyst synthesized is Co 4 N.
[0034] figure 2 For the preparation of Co 4 N and matrix TEM...
Embodiment 2
[0038] A kind of Co with improved photocatalytic efficiency and photocatalyst stability 4 The preparation method of N promoter, comprises the steps:
[0039] 1) 0.2g CoCl 2 Powder and Ta 3 N 5 Put 2g of powder and 2g of KCl powder into the porcelain boat at the same time, and then put the porcelain boat into the tube furnace.
[0040] 2) Feed ammonia gas, at 400sccm NH 3 After nitriding at 900°C for 15 hours, the temperature was naturally cooled to room temperature to obtain a nitrided product.
[0041] 3) After the sample was washed with deionized water several times, excess salt and products were removed, and after vacuum drying, Co 4 N promoter.
Embodiment 3
[0043] A kind of Co with improved photocatalytic efficiency and photocatalyst stability 4 The preparation method of N promoter, comprises the steps:
[0044]1) 0.5g CoCl 2 Powder and Ta 3 N 5 Put 5g of powder and 50g of KCl powder into the porcelain boat at the same time, and then put the porcelain boat into the tube furnace.
[0045] 2) Feed ammonia gas, at 100sccm NH 3 After nitriding at 600°C for 10 hours, the temperature was naturally lowered to room temperature to obtain a nitrided product.
[0046] 3) After the sample was washed with deionized water several times, excess salt and products were removed, and after vacuum drying, Co 4 N promoter.
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