An improved p-doped tio 2 Preparation method of photocatalyst
A technology of photocatalyst and phosphine, which is applied in the direction of physical/chemical process catalysts, chemical instruments and methods, chemical/physical processes, etc., can solve the problem of insignificant improvement of photocatalytic activity under visible light, and achieve improved separation and energy consumption Low, the effect of improving the utilization rate
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Embodiment 1
[0014] An Improved P-doped TiO 2 Photocatalyst preparation method, comprises the steps:
[0015] 1) Dissolve 10ml of butyl titanate in 80ml of absolute ethanol, stir vigorously, then slowly add 20ml of deionized water dropwise, stir for 6 hours, and then put it into a stainless steel high-pressure hydrothermal tank with a Teflon lining and a pressure gauge in the reactor.
[0016] 2) Pass the phosphine / nitrogen mixed gas with a volume ratio of 0.005:1 into the mixed solution in the reactor, and keep the temperature at 180° C. for 12 hours under a pressure of 0.2 MPa.
[0017] 3) The reactor was cooled to room temperature with water, the product was filtered, washed with ethanol and deionized water, dried at room temperature for 24 hours, and then vacuum-dried at 80°C for 12 hours to obtain P-doped TiO 2 Photocatalyst, by X-ray photoelectron spectroscopy (XPS) analysis results show that P in the P element 3+ The content is 45.5%.
Embodiment 2
[0019] An Improved P-doped TiO 2 Photocatalyst preparation method, comprises the steps:
[0020] 1) Dissolve 23ml of butyl titanate in 80ml of absolute ethanol, stir vigorously, then slowly add 20ml of deionized water dropwise, stir for 6h, and then put it into a stainless steel high-pressure hydrothermal tank with a polytetrafluoroethylene lining and a pressure gauge in the reactor.
[0021] 2) Pass the phosphine / nitrogen mixed gas with a volume ratio of 0.005:1 into the mixed solution in the reactor, and keep the temperature at 180° C. for 12 hours under a pressure of 0.3 MPa.
[0022] 3) The reactor was cooled to room temperature with water, the product was filtered, washed with ethanol and deionized water, dried at room temperature for 24 hours, and then vacuum-dried at 80°C for 12 hours to obtain P-doped TiO 2 Photocatalyst, by X-ray photoelectron spectroscopy (XPS) analysis results show that P in the P element 3+ The content is 58.7%.
Embodiment 3
[0024] An Improved P-doped TiO 2 Photocatalyst preparation method, comprises the steps:
[0025] 1) Dissolve 23ml of butyl titanate in 80ml of absolute ethanol, stir vigorously, then slowly add 20ml of deionized water dropwise, stir for 6h, and then put it into a stainless steel high-pressure hydrothermal tank with a polytetrafluoroethylene lining and a pressure gauge in the reactor.
[0026] 2) Pass the mixed gas of phosphine / nitrogen with a volume ratio of 0.009:1 into the mixed solution in the reactor, and keep the temperature at 180° C. for 12 hours at a pressure of 0.4 MPa.
[0027] 3) The reactor was cooled to room temperature with water, the product was filtered, washed with ethanol and deionized water, dried at room temperature for 24 hours, and then vacuum-dried at 80°C for 12 hours to obtain P-doped TiO 2 Photocatalyst, by X-ray photoelectron spectroscopy (XPS) analysis results show that P in the P element 3+ The content is 69.3%.
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