A kind of preparation method of graphite phase carbon nitride colloidal photocatalyst
A graphite phase carbon nitride and photocatalyst technology, applied in the field of photocatalytic materials, can solve problems such as uneven dispersion and insoluble bulk phase carbon nitride, and achieve simple production process, good dispersion and low energy consumption Effect
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Embodiment 1
[0025] First, weigh potassium chloride and ammonium thiocyanate with a mass ratio of 1:50, stir and mix them evenly in the aqueous solution and evaporate the solvent to dryness. The uniformly mixed solid powder was placed in an alumina crucible, and calcined for 12 hours in an argon atmosphere at a temperature of 600°C. After natural cooling, the samples were taken out and ground into powder. After natural cooling, the samples were taken out and ground into powder. The remaining potassium chloride is removed by dialysis, and the dialysis solution is evaporated to dryness to obtain a carbon nitride photocatalyst solid powder. Dissolve the solid powder in water to obtain carbon nitride colloid.
Embodiment 2
[0027] First, weigh potassium chloride and ammonium thiocyanate with a mass ratio of 1:50, grind and mix well. The uniformly ground and mixed solid powder was placed in an alumina crucible, and calcined in an air atmosphere at a temperature of 600° C. for 12 hours. After natural cooling, the samples were taken out and ground into powder. After natural cooling, the samples were taken out and ground into powder. The remaining potassium chloride is removed by dialysis, and the dialysis solution is evaporated to dryness to obtain a carbon nitride photocatalyst solid powder. Dissolve the solid powder in water to obtain carbon nitride colloid.
Embodiment 3
[0029] First, weigh potassium chloride and ammonium thiocyanate with a mass ratio of 1:50, grind and mix well. The uniformly ground and mixed solid powder was placed in an alumina crucible, and calcined in an argon atmosphere at a temperature of 600° C. for 12 hours. After natural cooling, the samples were taken out and ground into powder. After natural cooling, the samples were taken out and ground into powder. The remaining potassium chloride is removed by dialysis, and the dialysis solution is evaporated to dryness to obtain a carbon nitride photocatalyst solid powder. Dissolve the solid powder in water to obtain carbon nitride colloid.
[0030] figure 1 It is the XRD pattern of the carbon nitride photocatalyst solid powder obtained in Example 2. From the figure, it can be found that the carbon nitride solid powder is at 8.1 o and 27.5 o There are two obvious XRD diffraction peaks attributable to the (100) and (002) crystal planes of graphitic carbon nitride, which co...
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