A kind of high-efficiency photocatalytic water splitting catalyst for hydrogen production and preparation method thereof
A photocatalytic and water-producing hydrogen technology, which is applied in physical/chemical process catalysts, chemical instruments and methods, hydrogen production, etc. Inhibit the effect of compounding
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Embodiment 1
[0026] (1) Get 0.4689 grams of copper nitrate and put it into a 250 milliliter beaker and stir for 10 minutes, then add 100 milliliters of sodium hydroxide solution of 0.25 moles per liter under continuous stirring, and continue to stir for 2 hours;
[0027] (2) Wash and centrifuge the suspension in step (1) 3 times with deionized water, wash and centrifuge 2 times with ethanol, pour off the supernatant and put it into an oven at 80 degrees Celsius to dry for 12 hours;
[0028] (3) Grinding the dried product of step (2) and sodium hypophosphite (the quality of sodium hypophosphite: the quality of the dried product of step (2)=5:1) in a mortar;
[0029] (4) get the product of step (3) gained and put into the tubular furnace with nitrogen protection device and roast 1 hour under the condition of 300 degree;
[0030] (5) the product after the roasting of step (4) is washed with deionized water and centrifuged 3 times, and ethanol is washed and centrifuged 2 times to obtain the pr...
Embodiment 2
[0036] Step (1)~(8) is the same as embodiment 1, the product (pure phase titanium dioxide (TiO2) in step (8) 2 ) nanocrystals and the product (pure phase cuprous phosphide (Cu 3 P) The mass ratio is (mass of titanium dioxide: mass of cuprous phosphide = 100:0.125), grind in a mortar for 45 minutes and mix evenly to obtain a sample of 0.125wt% Cu 3 P / TiO 2 ; 0.1 gram of the catalyst, 90 milliliters of water, and 10 milliliters of triethanolamine with a mass fraction of 99.5% were mixed to form a uniform suspension, which was tested by the Beijing Pufferai Optical Hydrogen Production System and the Shimadzu GC-81 chromatograph. The photocatalytic water splitting rate of the photocatalytic water splitting agent prepared by the present invention is 7.149mmol h -1 g -1 , the hydrogen production rate is 0.74mmol h higher than that of pure titanium dioxide -1 g -1 There has been a significant improvement, and the improvement effect has exceeded 9 times.
Embodiment 3
[0038] Step (1)~(8) is the same as embodiment 1, the product (pure phase titanium dioxide (TiO2) in step (8) 2 ) nanocrystals and the product (pure phase cuprous phosphide (Cu 3 P) The mass ratio is (mass of titanium dioxide: mass of cuprous phosphide = 100:0.5), grind in a mortar for 45 minutes and mix evenly to obtain a sample of 0.5wt% Cu 3 P / TiO 2 ; 0.1 gram of the catalyst, 90 milliliters of water, and 10 milliliters of triethanolamine with a mass fraction of 99.5% were mixed to form a uniform suspension, which was tested by the Beijing Pufferai Optical Hydrogen Production System and the Shimadzu GC-81 chromatograph. The photocatalytic water splitting rate of the photocatalytic water splitting agent prepared by the present invention is 7.939mmol h -1 g -1 , the hydrogen production rate is 0.74mmol h higher than that of pure titanium dioxide -1 g -1 There has been a significant improvement, and the improvement effect has exceeded 10 times.
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