Preparation and application of a kind of goqds/tio2/wo3 photocatalyst
A photocatalyst, 2H2O technology, applied in the direction of metal/metal oxide/metal hydroxide catalyst, physical/chemical process catalyst, water/sludge/sewage treatment, etc., can solve the problem of not eliminating toxicity
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Embodiment 1
[0016] Take 30ml of GOQDs solution and sonicate and add 0.3771g of Na 2 WO 4 • 2H 2 O, stir vigorously for about 1h to make Na 2 WO 4 • 2H 2 O is completely dissolved; put 80ml of absolute ethanol on the magnetic stirrer, add 1ml of butyl titanate dropwise while stirring, and add 0.4ml of HF, stir for 30min; mix the two solutions and stir for 1~2h Transfer to a 100ml hydrothermal autoclave for hydrothermal reaction (160°C, 24h), wash the obtained product with pure water and absolute ethanol several times to neutrality, and then dry it in a constant temperature drying oven at 60°C. Get GOQDs / TiO 2 / WO 3 photocatalyst material.
[0017] Take 80ml of reverse osmosis concentrated water for photocatalytic reaction, adjust its pH to 6 and add 35.2mg of GOQDs / TiO 2 / WO 3 Photocatalyst, avoid light and stir for 30 minutes, then transfer to photocatalytic reaction device, measure Cd in reverse osmosis concentrated water after 80 minutes of light 2 + and Pb 2+ Concentration,...
Embodiment 2
[0019] GOQDs / TiO 2 / WO 3 The preparation method of the photocatalyst material is as in Example 1.
[0020] Take 80ml of reverse osmosis concentrated water for photocatalytic reaction, adjust its pH to 7 and add 41.6mg of GOQDs / TiO 2 / WO 3 Photocatalyst, avoid light and stir for 30 minutes, then transfer to photocatalytic reaction device, measure Cd in reverse osmosis concentrated water after 60 minutes of light 2 + and Pb 2+ Concentration, after determination, C(Pb 2+ )=0.007 mg / l, C(Cd 2+ )=0.132 mg / l, Pb 2+ The removal rate: 97.96%, Cd 2+ The removal rate is: 65.85%.
Embodiment 3
[0022] GOQDs / TiO 2 / WO 3 The preparation method of the photocatalyst material is as in Example 1.
[0023] Take 80ml reverse osmosis concentrated water for photocatalytic reaction, adjust its pH to 4 and add 48.0mg of GOQDs / TiO 2 / WO 3 Photocatalyst, avoid light and stir for 30 minutes, then transfer to photocatalytic reaction device, measure Cd in reverse osmosis concentrated water after 40 minutes of light 2 + and Pb 2+ Concentration, after determination, C(Pb 2+ )=0.007 mg / l, C(Cd 2+ )=0.124 mg / l, Pb 2+ The removal rate: 97.96%, Cd 2+ The removal rate is: 67.73%.
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