Preparation method and application of visible light response hydrogen generation photocatalyst GO/SiC/WO3
A photocatalyst and visible light technology, applied in chemical instruments and methods, physical/chemical process catalysts, chemical/physical processes, etc., can solve the problems of easy recombination of electron holes, secondary pollution, and difficult contact of water molecules.
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Embodiment 1
[0025] (1) Preparation of pure SiC: Put the SiC powder in a muffle furnace, bake it at 700°C for 5 hours, and let it cool down to room temperature naturally to remove impurity carbon; seal it in 2% HF solution and soak it overnight to remove SiO 2 and other oxides; repeated centrifugal washing with deionized water 11 times to pH = 7, placed in a vacuum oven, and vacuum-dried at 60°C;
[0026] (2) WO 3 Suspension: at room temperature, 0.1311g WO 3 Place in 100mL deionized water, mix well to get WO 3 suspension;
[0027] (3) Mixing: at room temperature, to WO 3 Add 5.0g of pure SiC, 0.05g of GO and 2 drops of 1-butyl-3-methylimidazolium hexafluorophosphate ionic liquid to the suspension in sequence, and stir it ultrasonically for 10h to make it evenly mixed;
[0028] (4) Preparation of visible light-responsive hydrogen production photocatalyst GO / SiC / WO by hydrothermal synthesis 3 : put the suspension after ultrasonic above in a 300mL high-temperature reaction kettle, react...
Embodiment 2
[0030] This embodiment except step (2) WO 3 0.3412gWO 3 , others are identical with embodiment 1, obtain SGW-5 photocatalytic material; WO 3 The weight percentage in the hydrothermal reaction system is 5% (calculated as tungsten element).
Embodiment 3
[0032] This embodiment except step (2) WO 3 0.5690g WO 3 , others are identical with embodiment 1, obtain SGW-8 photocatalytic material; WO 3 The weight percentage in the hydrothermal reaction system is 8% (calculated as tungsten element).
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