Graphene-doped polyaniline adsorption material preparation and application
An adsorption material, graphene technology, applied in the direction of adsorption water/sewage treatment, chemical instruments and methods, water/sludge/sewage treatment, etc., can solve the problems that have not been reported in the application, and achieve the effect of strong binding force
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Embodiment 1
[0049] (1) Preparation of graphene oxide (GO). Adopt Hummers method to prepare, concrete method is as follows:
[0050] Pre-oxidation: Add graphite powder (graphite, 1.0g) into concentrated sulfuric acid (98%, 10mL), stir for 15min, and slowly add K at 80°C 2 S 2 o 8 (0.5g), P 2 o 5 (0.5g), the reaction was continued at 80°C for 4.5h, then cooled to room temperature, diluted with deionized water (250mL), filtered, washed to neutral, and dried in the air overnight with the oxidized black-gray powder to obtain the pre- Oxidized powder.
[0051] Secondary oxidation: Add the obtained pre-oxidized powder to concentrated sulfuric acid (98%, 23mL) in ice bath, slowly add KMnO 4 (3g), the reaction continued for 2h, then kept at 35°C for 1h, slowly added deionized water (46mL), the solution boiled immediately, a lot of red smoke came out, kept at this temperature for 1h, added deionized water (100mL) To dilute, add an appropriate amount (10mL) of 30% H 2 o 2 , to make the ...
Embodiment 2
[0056] (1) Preparation of graphite oxide (GO): same as Example 1.
[0057] (2) In situ polymerization to obtain polyaniline-graphene oxide composites: dissolve aniline (0.8g) in 2 mL of 98% sulfuric acid to form a sulfuric acid solution of aniline; disperse graphene oxide (0.2g) in 100 mL In water, form an aqueous solution of graphene oxide; then mix the sulfuric acid solution of aniline with the aqueous solution of graphene oxide; ultrasonically disperse for 30 minutes, add ammonium persulfate (0.017g) dropwise, continue ultrasonication for 5 minutes, turn to a magnetic stirrer to stir, room temperature After reacting for 8 hours, a dark green precipitate was obtained. After the reaction was completed, it was filtered (the filtrate was reddish brown), and the reactant was repeatedly washed with secondary water and methanol to obtain a polyaniline-graphene oxide composite;
[0058] (3) Preparation of graphene-doped polyaniline adsorption material by reduction: After the pol...
Embodiment 3
[0061] (1) Preparation of graphene oxide: Same as Example 1.
[0062] (2) In situ polymerization to obtain polyaniline-graphene oxide composites: dissolve aniline (0.6g) in 2 mL of 98% sulfuric acid to form a sulfuric acid solution of aniline; disperse graphene oxide (0.2g) in 100 mL In water, form an aqueous solution of graphene oxide; then mix the sulfuric acid solution of aniline with the aqueous solution of graphene oxide; ultrasonically disperse for 25 minutes, add ammonium persulfate (0.017g) dropwise, continue ultrasonication for 5 minutes, turn to a magnetic stirrer to stir, room temperature After 10 hours of reaction, a dark green precipitate was obtained. After the reaction was completed, it was filtered (the filtrate was reddish brown), and the reactant was repeatedly washed with secondary water and methanol to obtain a polyaniline-graphene oxide composite;
[0063] (3) Preparation of graphene-doped polyaniline adsorption material by reduction: After the polyanilin...
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