Preparation and application of a magnetic graphene oxide adsorbent modified by hydroxyethylidene diphosphate
A technology of hydroxyethylidene diphosphoric acid and rock oxide, applied in the direction of adsorption of water/sewage treatment, alkali metal oxide/hydroxide, inorganic chemistry, etc., to achieve the effect of simple and easy adsorption process, simple preparation process and easy separation
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Embodiment 1
[0034] Example 1 Preparation method of magnetic graphene oxide adsorbent modified by hydroxyethylidene diphosphate
[0035] (1) Preparation of magnetic graphene oxide materials
[0036] a. Weigh 1 part of FeCl 3 ·6H 2O utilizes magnetic stirring and ethylene glycol to be made into the solution of 0.05 g / ml concentration, weighs 0.05 part of graphene oxide, 1 part of ammonia water, 0.05 part of polyvinylpyrrolidone (PVP);
[0037] b. to FeCl 3 ·6H 2 0 In the mixed solution of ethylene glycol, add graphene oxide powder, after stirring to obtain a uniform mixed solution, add ammonia water drop by drop, and add PVP after the mixture is stable;
[0038] c. Place the mixture in a polytetrafluoroethylene liner reactor and heat at 160 °C for 15 h;
[0039] d. After the product is cooled to room temperature, it is alternately washed 3 times with water and absolute ethanol, freeze-dried, and ground;
[0040] (2) Preparation of magnetic graphene oxide adsorbent modified by hydroxye...
Embodiment 2
[0043] The preparation method of the magnetic graphene oxide adsorbent modified by embodiment 2 hydroxyethylidene diphosphate
[0044] (1) Preparation of magnetic graphene oxide materials
[0045] a. Weigh 2 parts of FeCl 3 ·6H 2 O utilizes magnetic stirring and ethylene glycol to be made into the solution of 0.05 g / ml concentration, weighs 0.16 parts of graphene oxide, 3 parts of ammonia water, 0.2 part of polyvinylpyrrolidone (PVP);
[0046] b. to FeCl 3 ·6H 2 0 In the mixed solution of ethylene glycol, add graphene oxide powder, after stirring to obtain a uniform mixed solution, add ammonia water drop by drop, and add PVP after the mixture is stable;
[0047] c. Place the mixture in a polytetrafluoroethylene liner reactor and heat at 180 °C for 20 h;
[0048] d. After the product is cooled to room temperature, it is alternately washed 3 times with water and absolute ethanol, freeze-dried, and ground;
[0049] (2) Preparation of magnetic graphene oxide adsorbent modifi...
Embodiment 3
[0052] The preparation method of the magnetic graphene oxide adsorbent modified by embodiment 3 hydroxyethylidene diphosphate
[0053] (1) Preparation of magnetic graphene oxide materials
[0054] a. Weigh 1.5 parts of FeCl 3 ·6H 2 O utilizes magnetic stirring and ethylene glycol to be made into the solution of 0.05 g / ml concentration, weighs 0.2 part graphene oxide, 10 parts ammoniacal liquor, 0.3 part polyvinylpyrrolidone (PVP);
[0055] b. to FeCl 3 ·6H 2 0 In the mixed solution of ethylene glycol, add graphene oxide powder, after stirring to obtain a uniform mixed solution, add ammonia water drop by drop, and add PVP after the mixture is stable;
[0056] c. Place the mixture in a polytetrafluoroethylene liner reactor and heat at 190 °C for 24 h;
[0057] d. After the product is cooled to room temperature, it is alternately washed 3 times with water and absolute ethanol, freeze-dried, and ground;
[0058] (2) Preparation of magnetic graphene oxide adsorbent modified b...
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