ctab doped fe 3 the s 4 Magnetic environmental restoration material and its preparation method and application
A technology of environmental remediation and fe3s4, applied in chemical instruments and methods, water/sludge/sewage treatment, other chemical processes, etc., to achieve the effects of low production cost, large adsorption capacity, and simple synthesis process
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Embodiment 1
[0028] In the first step, the FeCl 3 ·6H 2 O and thiourea were dissolved in a certain volume of ethylene glycol at a molar ratio of 1:2, and magnetically stirred for 20-30 minutes until a carmine solution was formed;
[0029] In the second step, 0.6 mmol of cetyltrimethylammonium bromide (CTAB) is added to the above mixed solution, and ultrasonically stirred for a period of time;
[0030] The third step is to transfer the reaction system of the second step to a closed reaction vessel (autoclave);
[0031] The fourth step is to put the high-pressure reactor in the third step into an oven, and the oven is heated to a reaction temperature of 180°C to create a high-temperature, high-pressure reaction environment and maintain a constant temperature for 12 hours;
[0032] In the fifth step, the reaction system in the fourth step was cooled to room temperature, and the obtained product was washed with ethanol and deionized water, and dried under vacuum conditions, and the magnetic ...
Embodiment 2
[0035] In the first step, the FeCl 3 ·6H 2 O and thiourea were dissolved in a certain volume of ethylene glycol at a molar ratio of 1:2, and magnetically stirred for 20-30 minutes until a carmine solution was formed;
[0036] In the second step, 1.2 mmol of cetyltrimethylammonium bromide (CTAB) is added to the above mixed solution, and ultrasonically stirred for a period of time;
[0037] The third step is to transfer the reaction system of the second step to a closed reaction vessel (autoclave);
[0038] The fourth step is to put the high-pressure reactor in the third step into an oven, and the oven is heated to a reaction temperature of 180°C to create a high-temperature, high-pressure reaction environment and maintain a constant temperature for 12 hours;
[0039] In the fifth step, the reaction system in the fourth step was cooled to room temperature, and the obtained product was washed with ethanol and deionized water, and dried under vacuum conditions, and the magnetic en...
Embodiment 3
[0042] In the first step, the FeCl 3 ·6H 2 O and thiourea were dissolved in a certain volume of ethylene glycol at a molar ratio of 1:2, and magnetically stirred for 20-30 minutes until a carmine solution was formed;
[0043] In the second step, 1.8 mmol of cetyltrimethylammonium bromide (CTAB) is added to the above mixed solution, and ultrasonically stirred for a period of time;
[0044] The third step is to transfer the reaction system of the second step to a closed reaction vessel (autoclave);
[0045] The fourth step is to put the high-pressure reactor in the third step into an oven, and the oven is heated to a reaction temperature of 180°C to create a high-temperature, high-pressure reaction environment and maintain a constant temperature for 12 hours;
[0046] In the fifth step, the reaction system in the fourth step was cooled to room temperature, and the obtained product was washed with ethanol and deionized water, and dried under vacuum conditions, and the magnetic ...
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