A kind of 3D graphite phase carbon nitride material and preparation method thereof
A graphite phase carbon nitride, 3D technology, applied in chemical instruments and methods, nitrogen and non-metallic compounds, chemical/physical processes, etc., can solve the problems of easy recombination of photogenerated carriers and low light utilization rate, and achieve Improve the effect of easy recombination, high production yield and improved utilization
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Embodiment 1
[0023] Step 1, Preparation of Precursor:
[0024] Weigh 3 g of melamine and 0.5 mol of ionic liquid 1-hexadecyl-3-methylimidazolium bromide, put them into a clean polytetrafluoroethylene-lined reactor, and add 35 mL of deionized water. After stirring evenly, it was moved to an oven at 200 °C for reaction for 12 h. Collection by centrifugation. After washing several times with absolute ethanol and deionized water, and drying in a 40°C oven for 12 hours, the precursor can be obtained.
[0025] Step 2, Preparation of 3D CN:
[0026] Put 2 g of the precursor obtained in step 1 into an alumina crucible and cover with a lid. It was moved to a muffle furnace and heated to 500 °C at a rate of 2 °C per minute in an air atmosphere for 4 h to obtain 3D CN powder.
Embodiment 2
[0028] Step 1, Preparation of Precursor:
[0029] Weigh 4 g of melamine and 1.0 mol of ionic liquid 1-hexadecyl-3-methylimidazolium chloride, put them into a clean polytetrafluoroethylene-lined reactor, and add 30 mL of deionized water. After stirring evenly, it was moved to an oven at 180°C for reaction for 12h. Collection by centrifugation. After washing with absolute ethanol and deionized water for several times, the precursor was obtained by drying in an oven at 50 °C for 8 h.
[0030] Step 2, Preparation of 3D CN:
[0031] Put 3 g of the precursor obtained in step 1 into an alumina crucible and cover with a lid. It was moved to a muffle furnace and heated to 550 °C at a rate of 2 °C per minute in an air atmosphere, and kept for 3 h to obtain 3D CN powder.
Embodiment 3
[0033] Step 1, Preparation of Precursor:
[0034] Weigh 2 g of melamine and 2 mol of ionic liquid 1-hexadecyl-3-methylimidazolium bromide, put them into a clean polytetrafluoroethylene-lined reactor, and add 40 mL of deionized water. After stirring evenly, it was moved to an oven at 160° C. to react for 14 hours. Collection by centrifugation. After washing several times with absolute ethanol and deionized water, and drying in an oven at 80 °C for 18 h, the precursor can be obtained.
[0035] Step 2, Preparation of 3D CN:
[0036] Put 3 g of the precursor obtained in step 1 into an alumina crucible and cover with a lid. It was moved to a muffle furnace and heated to 650 °C at a rate of 3 °C per minute in an air atmosphere, and kept for 5 h to obtain 3D CN powder.
[0037] figure 1 is the X-ray diffraction (XRD) pattern of the 3D CN material. It can be seen from the figure that 3D CN and CN have the same diffraction characteristic peaks, indicating their crystal phase prop...
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