Preparation method of ordered porous ZnO/graphene composite film
A graphene composite and thin-film technology, which is applied in chemical instruments and methods, chemical/physical processes, physical/chemical process catalysts, etc., can solve the problem of low efficiency of photogenerated carriers in nano-ZnO, inability to make full use of solar energy, and high energy consumption and other issues, to achieve the effect of improved catalytic effect, low price and increased speed
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Embodiment 1
[0018] Add 250ml of water, 0.2gNaHCO3, and 60ml of styrene into a four-necked flask, ventilate nitrogen, heat and stir at 70°C, add 0.23g of potassium persulfate, and polymerize for 15 hours to obtain a polystyrene emulsion. Filter out the agglomerated particles to obtain a monodisperse polystyrene emulsion. Styrene emulsion;
[0019] Immerse the carrier vertically into the polystyrene emulsion of step (1) for 2 minutes. The substrate was pulled vertically at a speed of 10mm / min, and dried in an oven at 30°C for 20 minutes to obtain a single-layer polystyrene template.
[0020] Add zinc acetate dihydrate and diethanolamine in an equimolar ratio to ethanol to make the concentration 0.6mol / L, heat and stir in a water bath at 50°C for 2 hours, then add 2ml of 7.5mg / ml graphene oxide suspension, stir and sonicate for 1 hour to obtain Zinc oxide and graphene precursor sols.
[0021] Immerse the template of step (2) vertically in the mixed sol of step (3) for 2 minutes, and then p...
Embodiment 2
[0024] Add 250ml of water, 0.2gNaHCO3, and 60ml of styrene into a four-necked flask, blow nitrogen, heat and stir at 70°C, add 0.23g of potassium persulfate, and polymerize for 20 hours to obtain a polystyrene emulsion, filter out the agglomerated particles to obtain a monodisperse polystyrene emulsion. Styrene emulsion;
[0025] Immerse the carrier vertically into the polystyrene emulsion of step (1) for 2 minutes. Pull the substrate vertically at a speed of 10mm / min, put it in a 30°C oven and dry it for 20 minutes, and repeat 3 times to obtain a polystyrene template.
[0026] Add zinc acetate dihydrate and diethanolamine in an equimolar ratio to ethanol to make the concentration 0.6mol / L, heat and stir in a water bath at 50°C for 2 hours, add 1ml of 7.5mg / ml graphene oxide suspension, stir and sonicate for 1 hour to obtain Zinc oxide and graphene precursor sols.
[0027] Immerse the template of step (2) vertically in the mixed sol of step (3) for 2 minutes, and then pull t...
Embodiment 3
[0030] Add 250ml of water, 0.2gNaHCO3, and 60ml of styrene into a four-necked flask, blow nitrogen, heat and stir at 70°C, add 0.23g of potassium persulfate, and polymerize for 24 hours to obtain a polystyrene emulsion. Filter out the agglomerated particles to obtain a monodisperse polystyrene emulsion. Styrene emulsion;
[0031] Immerse the carrier vertically into the polystyrene emulsion of step (1) for 2 minutes. Pull the substrate vertically at a speed of 10mm / min, and dry it in a 30°C oven for 20 minutes to obtain a single-layer polystyrene template;
[0032] Add zinc acetate dihydrate and diethanolamine in an equimolar ratio to isopropanol to make the concentration 0.9mol / L, heat and stir in a water bath at 50°C for 2 hours, add 2ml of 7.5mg / ml graphene oxide suspension, stir and sonicate for 1 hours to obtain zinc oxide and graphene precursor sol;
[0033] Immerse the template of step (2) vertically in the mixed sol of step (3) for 3 minutes, and then pull the templat...
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