Magnetic solid super acid nanotube catalytic agent and preparation method thereof
A technology of solid super acid and titanate nanotubes, which is applied in the directions of light water/sewage treatment, energy and wastewater treatment, etc., can solve the problems of high application cost, inability to industrialize use, low solar energy utilization rate, and difficulty in recycling, etc., and achieves easy industrialization. The effect of production, environmental friendliness and simple preparation process
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Embodiment 1
[0029] A magnetic solid superacid nanotube catalyst, that is, containing SO 4 2- TiO 2 Self-assembled magnetic substance Fe with superparamagnetism on nanotube support 3 o 4 , SO in the magnetic solid superacid nanotube catalyst 4 2- 、TiO 2 Nanotubes and Fe 3 o 4 Calculated in molar ratio, ie SO 4 2- : TiO 2 Nanotube: Fe 3 o 4 It is 0.265:1:0.808.
[0030] The preparation method of above-mentioned a kind of magnetic solid superacid nanotube catalyst specifically comprises the steps:
[0031] (1), put 5g TiO 2 The powder was reacted with 70mL 10mol / L NaOH solution in a 100mL polytetrafluoroethylene-lined hydrothermal reactor at 150°C for 20h, and then cooled to room temperature with 0.1 mol / L HNO 3 The solution was washed until the pH of the filtrate was 7, and then washed with deionized water until there was no NO 3 - , to obtain titanate nanotubes;
[0032] (2) Immerse the titanate nanotubes obtained in step (1) in 0.5mol / L sulfuric acid for 1h, filter, dry...
Embodiment 2
[0035] A magnetic solid superacid nanotube catalyst, that is, containing SO 4 2- TiO 2 Self-assembled magnetic substance Fe with superparamagnetism on nanotube support 3 o 4 , SO in the magnetic solid superacid nanotube catalyst 4 2- 、TiO 2 Nanotubes and Fe 3 o 4 Calculated in molar ratio, ie SO 4 2- : TiO 2 Nanotube: Fe 3 o 4 It is 0.424:1:0.152.
[0036] The preparation method of above-mentioned a kind of magnetic solid superacid nanotube catalyst specifically comprises the steps:
[0037] (1), put 2g TiO 2 Powder (P25 type) and 70mL 10mol / L NaOH solution were hydrothermally reacted in a 100mL polytetrafluoroethylene-lined hydrothermal reactor at 170°C for 20h, cooled to room temperature, and then treated with 0.1 mol / L HNO 3 The solution was washed until the pH of the filtrate was 7, and then washed with deionized water until there was no NO 3 - , to obtain titanate nanotubes;
[0038] (2) Immerse the titanate nanotubes obtained in step (1) in 0.1mol / L su...
Embodiment 3
[0043] A magnetic solid superacid nanotube catalyst, that is, containing SO 4 2- TiO 2 Self-assembled magnetic substance Fe with superparamagnetism on nanotube support 3 o 4 , SO in the magnetic solid superacid nanotube catalyst 4 2- 、TiO 2 Nanotubes and Fe 3 o 4 Calculated in molar ratio, ie SO 4 2- : TiO 2 Nanotube: Fe 3 o 4 It is 0.053:1:0.152.
[0044] The preparation method of above-mentioned a kind of magnetic solid superacid nanotube catalyst specifically comprises the steps:
[0045] (1), put 5g TiO 2 The powder was reacted with 70mL 10mol / L NaOH solution in a 100mL polytetrafluoroethylene-lined hydrothermal reactor at 150°C for 20h, and then cooled to room temperature with 0.1 mol / L HNO 3 The solution was washed until the pH of the filtrate was 7, and then washed with deionized water until there was no NO 3 - , to obtain titanate nanotubes;
[0046] (2), impregnate the titanate nanotubes obtained in step (1) with 0.3mol / L sulfuric acid for 1h, filter...
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