A kind of reduced graphene oxide/mesoporous graphitized carbon nitride material and its preparation method
A graphene and graphitization technology, applied in the field of photocatalytic materials, can solve problems such as difficulty, photo-generated charge recombination, limited use, etc., and achieve the effects of simple synthesis method, improved catalytic performance, and simple and efficient preparation method.
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Embodiment 1
[0043] This embodiment provides a reduced graphene oxide / mesoporous graphitized carbon nitride material, and a method for preparing the material (see the schematic diagram of the preparation process in figure 1 ) includes the following steps:
[0044] (1) Dissolve 0.5g of cetyltrimethylammonium bromide in 18mL of deionized water, add 6.8mL of ammonia water and 7mL of ethanol and mix well, then add 0.15g of melamine and 10mg of graphene oxide (pre-dispersed in 10mL to Ionized water); the resulting mixture was stirred at room temperature for 30 min, then volatilized at 55° C. to induce self-assembly for 5 h, and mesoscopic S-P-GO-1 ternary supramolecular aggregates were obtained.
[0045] (2) The above-mentioned mesoscopic S-P-GO-1 ternary supramolecular aggregates were heated to 350 °C at a rate of 2 °C / min in a nitrogen atmosphere, and then to 550 °C at a rate of 5 °C / min. Keep at this temperature for 2h to obtain reduced graphene oxide / mesoporous graphitized carbon nitride m...
Embodiment 2
[0071] The present embodiment provides a reduced graphene oxide / mesoporous graphitized carbon nitride material, and the method for preparing the material comprises the following steps:
[0072] (1) Dissolve 0.3g of cetyltrimethylammonium bromide and 0.5g of cetyltrimethylammonium chloride in 18mL of deionized water, add 6.8mL of ammonia water and 7mL of ethanol and mix well, then add 0.5 g cyanamide, 50mg graphene oxide (pre-dispersed in 10mL water); the resulting mixture was stirred at room temperature for 60min, then volatilized at 40°C to induce self-assembly for 24h, to obtain mesoscopic S-P-GO-2 ternary supramolecular aggregates;
[0073] (2) The above-mentioned mesoscopic S-P-GO-2 ternary supramolecular aggregates were heated to 380 °C at a rate of 4 °C / min in a nitrogen atmosphere, and then to 600 °C at a rate of 5 °C / min. Keep at this temperature for 4h to obtain reduced graphene oxide / mesoporous graphitized carbon nitride material, rGO / mpg-C 3 N 4 -2.
[0074] Prod...
Embodiment 3
[0078] The present embodiment provides a reduced graphene oxide / mesoporous graphitized carbon nitride material, and the method for preparing the material comprises the following steps:
[0079] (1) Dissolve 0.3g of cetyltrimethylammonium bromide and 0.2g of octadecyltrimethylammonium chloride in 18mL of deionized water, add 6.8mL of ammonia water and 7mL of isopropanol, mix well, and then Add 0.2g of dicyandiamide and 20mg of graphene oxide (pre-dispersed in 20mL of water); the resulting mixture was stirred at room temperature for 30min, then volatilized at 45°C to induce self-assembly for 15h, and the mesoscopic S-P-GO-3 ternary supramolecule was obtained Aggregates;
[0080] (2) The above-mentioned mesoscopic S-P-GO-3 ternary supramolecular aggregates were heated to 400 °C at a rate of 5 °C / min in a nitrogen atmosphere, and then to 550 °C at a rate of 10 °C / min. Keep at this temperature for 3h to obtain reduced graphene oxide / mesoporous graphitized carbon nitride material, ...
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