A kind of molybdenum carbide and titanium dioxide composite photocatalytic decomposition of water and hydrogen production catalyst and preparation method thereof
A technology of composite photocatalysis and titanium dioxide, which is applied in the direction of physical/chemical process catalysts, chemical instruments and methods, hydrogen/synthesis gas production, etc., can solve the problem of low efficiency of hydrogen production by photocatalytic decomposition of water, and achieve inhibition of recombination rate and increase rate , the effect of improving efficiency
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Embodiment 1
[0025] (1) Get 1.5 grams of ammonium molybdate solid particles and stir in 30 milliliters of deionized water for 30 minutes to make it dissolve completely, then add 4.8 grams of glucose under continuous stirring, and continue stirring for 1.5 hours to obtain a transparent solution;
[0026] (2) Transfer the transparent solution obtained in step (1) to a polytetrafluoroethylene reactor with a stainless steel substrate, and then crystallize it for 12 hours at a temperature of 200 degrees Celsius. After the reactor is naturally cooled to room temperature, take out the polytetrafluoroethylene reactor. The reaction solution in the tetrafluoroethylene reactor was washed and centrifuged 4 times with deionized water after discarding the supernatant, and then washed and centrifuged 2 times with absolute ethanol; then dried at 80 degrees Celsius for 12 hours;
[0027] (3) The dried product obtained in step (2) was roasted for 3 hours under the protection of nitrogen and hydrogen mixed ga...
Embodiment 2
[0034] Steps (1)-(7) are the same as in Example 1;
[0035] (8) Disperse 0.000625 grams of molybdenum carbide prepared in step (4) in 35 milliliters of absolute ethanol, and then ultrasonically sonicate for 40 minutes, then add 0.25 grams of the molybdenum carbide prepared in the step (7) to the suspension Titanium dioxide, continue ultrasonication for 1.5 hours;
[0036] (9) Put the suspension in step (8) into an oven at 85 degrees Celsius to evaporate and remove ethanol, and then transfer the remaining product to a tube furnace protected by a mixed gas of nitrogen and hydrogen for 3 hours at 400 degrees Celsius to obtain the present product. 0.25wt% Mo as described in the invention 2 C / TiO 2 Mo 2 C / TiO 2 Photocatalytic water splitting hydrogen production catalyst. 0.05 grams of the catalyst, 90 milliliters of water and 10 milliliters of triethanolamine with a mass fraction of more than 99% were used to form a mixed solution, which was tested by the Beijing Powerline Opt...
Embodiment 3
[0038] Steps (1)-(7) are the same as in Example 1;
[0039] (8) Disperse 0.00125 grams of molybdenum carbide prepared in step (4) in 35 milliliters of absolute ethanol, then ultrasonically sonicate for 40 minutes, and then add 0.25 grams of the molybdenum carbide prepared in the step (7) to the suspension Titanium dioxide, continue ultrasonication for 1.5 hours;
[0040] (9) Put the suspension in step (8) into an oven at 85 degrees Celsius to evaporate and remove ethanol and transfer the remaining product to a tube furnace protected by nitrogen-hydrogen mixed gas for 3 hours at 400 degrees Celsius to obtain the present product. 0.5wt% Mo as described in the invention 2 C / TiO 2 Photocatalytic water splitting hydrogen production catalyst. 0.05 grams of the catalyst, 90 milliliters of water and 10 milliliters of triethanolamine with a mass fraction of more than 99% were used to form a mixed solution, which was tested by the Beijing Powerline Optical Hydrogen Production System ...
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