A kind of copper oxide/graphene composite material and its preparation method and application
A composite material, graphene technology, applied in chemical instruments and methods, alkali metal oxides/hydroxides, separation methods, etc., can solve the problems of difficult to effectively remove pollutants, expensive equipment, complicated methods, etc., and achieve good results. Application prospect, simple preparation process and low price effect
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Embodiment 1
[0027] (1) Add 2g of graphene oxide into 200mL of deionized water, and ultrasonically disperse. The ultrasonic treatment time is 60min, and the ultrasonic power is 150W, to obtain a graphene oxide dispersion;
[0028] (2) Add 25g of copper nitrate trihydrate into 100mL of deionized water, and slowly add 12mol / L of concentrated ammonia water dropwise while stirring to adjust the pH value to 9 to form a stable copper ammonia solution [Cu(NH 3 ) 4 (H 2 O) 2 ] 2+ ;
[0029] (3) Add the cuproammonia solution described in step (2) into the graphene oxide dispersion described in step (1), stir at room temperature for 30 min, and then o Continue heating under C condition for 2h; Then reactant is transferred to the autoclave with tetrafluoroethylene liner, at 180 oC Under carry out 5h hydrothermal reduction reaction;
[0030] (4) After the reaction solution in step (3) dropped to room temperature, the supernatant was removed, and the solid was washed with deionized water, suction...
Embodiment 2
[0032] (1) Add 1g of graphene oxide into 200mL of deionized water, and ultrasonically disperse it. The ultrasonic treatment time is 30min, and the ultrasonic power is 150W, to obtain a graphene oxide dispersion;
[0033] (2) Add 17g of copper nitrate trihydrate into 100mL of deionized water, and slowly add 12mol / L of concentrated ammonia water dropwise while stirring to adjust the pH value to 9.5 to form a stable copper ammonia solution [Cu(NH 3 ) 4 (H 2 O) 2 ] 2+ ;
[0034] (3) Add the cuproammonia solution described in step (2) into the graphene oxide dispersion described in step (1), stir at room temperature for 50 min, and then o Continue heating under C condition for 2h; Then reactant is transferred to the autoclave with tetrafluoroethylene liner, at 150 oC Under carry out 8h hydrothermal reduction reaction;
[0035] (4) After the reaction solution in step (3) dropped to room temperature, the supernatant was removed, and the solid was washed with deionized water, fi...
Embodiment 3
[0037] (1) Add 1g of graphene oxide into 200mL of deionized water, and ultrasonically disperse it. The ultrasonic treatment time is 60min, and the ultrasonic power is 150W, to obtain a graphene oxide dispersion;
[0038] (2) Add 10g of copper nitrate trihydrate into 100mL of deionized water, and slowly add 12mol / L of concentrated ammonia water dropwise while stirring to adjust the pH value to 9.2 to form a stable copper ammonia solution [Cu(NH 3 ) 4 (H 2 O) 2 ] 2+ ;
[0039](3) Add the cuproammonia solution described in step (2) into the graphene oxide dispersion described in step (1), stir at room temperature for 60 min, and then o Continue heating under C condition for 2h; Then reactant is transferred to the autoclave with tetrafluoroethylene liner, at 180 oC Under carry out 8h hydrothermal reduction reaction;
[0040] (4) After the reaction solution in step (3) dropped to room temperature, the supernatant was removed, and the solid was washed with deionized water, suc...
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