Method for preparing magnetic bismuth oxyiodide heptaoxide composite photocatalytic material
A composite photocatalytic and magnetic technology, applied in chemical instruments and methods, metal/metal oxide/metal hydroxide catalysts, physical/chemical process catalysts, etc., can solve problems such as low catalytic activity and difficult recycling , to achieve the effect of simple preparation and operation method, less equipment and high photocatalytic activity
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Embodiment 1
[0021] A preparation of magnetic Bi 5 o 7 I / SrFe 12 o 19 The preparation of composite catalytic material, concrete steps are as follows:
[0022] (1) SrFe 12 o 19 preparation of
[0023] Weigh 2.1624g of FeCl respectively 3 ·6H 2 O and 0.2666 g of SrCl 2 ·6H 2 O in a beaker, then add 20 mL of distilled water to the beaker and then vibrate until the solid is completely dissolved; under the action of magnetic stirring, add NaOH solution with a concentration of 5.2 mol / L dropwise to the above mixed solution to adjust the pH of the solution Continue to stir for 10 minutes after 10 minutes; then transfer the mixed solution to a 100mL polytetrafluoroethylene liner, seal it in a stainless steel reactor and place it in an oven at 200°C for 24 hours; after the reaction is completed, The filter cake obtained by suction filtration was soaked in dilute hydrochloric acid for 1 h, washed repeatedly with distilled water, then dried at 65 °C for 24 h, and finally ground to obtain Sr...
Embodiment 2
[0027] A preparation of magnetic Bi 5 o 7 I / SrFe 12 o 19 The preparation of composite catalytic material, concrete steps are as follows:
[0028] (1) SrFe 12 o 19 preparation of
[0029] Same as (1) in Example 1.
[0030] (2) Magnetic Bi 5 o 7 I / SrFe 12 o 19 Preparation of composite photocatalytic materials
[0031] Measure 5mL of ethylene glycol and 35mL of distilled water and mix to obtain a mixed solution; weigh 0.97g of Bi(NO 3 ) 3 ·5H 2 O was added to the above mixed solution, and ultrasonic 10min was obtained to obtain a suspension; 0.332g of KI was weighed and added to the suspension, and stirred for 35min; 12 o 19 Add the suspension to the above suspension, transfer the suspension to a 100mL polytetrafluoroethylene liner after mechanical stirring for 30 minutes, seal it in a stainless steel reactor and place it in an oven at 160°C for 12 hours; the reaction is over The filter cake obtained by suction filtration is an intermediate product, which is washe...
Embodiment 3
[0033] A preparation of magnetic Bi 5 o 7 I / SrFe 12 o 19 The preparation of composite catalytic material, concrete steps are as follows:
[0034] (1) SrFe 12 o 19 preparation of
[0035] Same as (1) in Example 1.
[0036] (2) Magnetic Bi 5 o 7 I / SrFe 12 o 19 Preparation of composite photocatalytic materials
[0037] Measure 5mL of ethylene glycol and 35mL of distilled water and mix to obtain a mixed solution; weigh 0.97g of Bi(NO 3 ) 3 ·5H 2 O was added to the above mixed solution, and ultrasonic 10min was obtained to obtain a suspension; 0.332g of KI was weighed and added to the suspension, and stirred for 35min; 12 o 19 Add the suspension to the above suspension, transfer the suspension to a 100mL polytetrafluoroethylene liner after mechanical stirring for 30 minutes, seal it in a stainless steel reactor and place it in an oven at 160°C for 12 hours; the reaction is over The filter cake obtained by suction filtration is an intermediate product, which is washe...
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