Preparation method of graphene/TiO2 composite material
A composite material, graphene technology, applied in antifouling/underwater coatings, chemical instruments and methods, polyurea/polyurethane coatings, etc., can solve problems such as improving antibacterial ability, achieve simple process flow, improve photocatalytic efficiency, The effect of controlling production cost
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Embodiment 1
[0030] A graphene / TiO 2 The preparation method of composite material, comprises the following steps:
[0031] Preparation of graphene oxide:
[0032] Put 1g of graphite powder into a 500mL round bottom flask, put the flask into an ice-water bath, add 50mL of concentrated sulfuric acid into the flask, and stir for 5-10min; slowly add potassium permanganate, and continue stirring for 15-20min; Stir the container at room temperature for 24 hours; then put the container in an ice-water bath, add deionized water, keep the ice-water bath for 5 minutes, add hydrogen peroxide drop by drop until no bubbles are generated; finally filter, wash with 30% hydrochloric acid, and then use deionized Wash with water until neutral, and obtain graphene oxide after ultrasonic stripping;
[0033] Nano-TiO 2 Preparation of:
[0034] Add 12.5mL butyl titanate into a 250mL three-necked flask, then slowly add 100mL of absolute ethanol dropwise into the butyl titanate, stir in a constant temperature...
Embodiment 2
[0045] A graphene / TiO 2 The preparation method of composite material, comprises the following steps:
[0046] Preparation of graphene oxide:
[0047] Put 1g of graphite powder into a 500mL round bottom flask, put the flask into an ice-water bath, add 50mL of concentrated sulfuric acid into the flask, and stir for 5-10min; slowly add potassium permanganate, and continue stirring for 15-20min; Stir the container at room temperature for 24 hours; then put the container in an ice-water bath, add deionized water, keep the ice-water bath for 5 minutes, add hydrogen peroxide drop by drop until no bubbles are generated; finally filter, wash with 30% hydrochloric acid, and then use deionized Wash with water until neutral, and obtain graphene oxide after ultrasonic stripping;
[0048] Nano-TiO 2 Preparation of:
[0049] Add 12.5mL butyl titanate into a 250mL three-necked flask, then slowly add 100mL of absolute ethanol dropwise into the butyl titanate, stir in a constant temperature...
Embodiment 3
[0053] A graphene / TiO 2 The preparation method of composite material, comprises the following steps:
[0054] Preparation of graphene oxide:
[0055] Put 1g of graphite powder into a 500mL round bottom flask, put the flask into an ice-water bath, add 50mL of concentrated sulfuric acid to the flask, and stir for 5-10min; slowly add 4g of potassium permanganate, and continue stirring for 15-20min; then Place the container at room temperature and stir for 24 hours; then put the container in an ice-water bath, add deionized water, keep the ice-water bath for 5 minutes, add hydrogen peroxide drop by drop until no bubbles are generated; finally filter, wash with 30% hydrochloric acid, and then use Wash with ion water until neutral, and obtain graphene oxide after ultrasonic stripping;
[0056] Nano-TiO 2 Preparation of:
[0057] Add 12.5mL butyl titanate into a 250mL three-necked flask, then slowly add 100mL of absolute ethanol dropwise into the butyl titanate, stir in a constan...
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