A nano cezno x Preparation method and application of doped porous carbon nitride hydrogel particles
A technology of porous carbon nitride and carbon hydrogel, applied in chemical instruments and methods, water treatment of special compounds, light water/sewage treatment, etc., can solve problems such as secondary pollution, low catalytic efficiency, and reduced redox efficiency. Achieve the effects of simple and efficient technology, improved photocatalytic efficiency, and low operating costs
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Embodiment 1
[0033] Nano-CeZnO x Preparation of sodium alginate hydrogel: 2g Ce(NO 3 )2 with Zn(NO 3 ) 2 Place it in the grinding machine at a molar ratio of 1:1, grind it thoroughly to obtain a milky white viscous substance, place it in a muffle furnace for sintering, the sintering temperature is 500 degrees, the heating rate is 5 degrees per minute, and the sintering time is 2 hours, and a light yellow color is obtained. solid. The microscopic morphology of the solid was observed by SEM as image 3 Shown is a spherical shape. The resulting CeZnO x The EDS spectrum of Figure 4 As shown, it can be seen that CeZnO x Among them, Ce, Zn and O are the main elements, and no other elements exist.
[0034] Light yellow CeZnO x Put it into the above-mentioned carbon nitride dispersion, fully stir, and sonicate; pour 5g of SA (6%) solution into the above-mentioned mixed solution, fully stir, and sonicate; the mixed solution is concentrated at 80 degrees to obtain a viscous precursor solut...
Embodiment 2
[0037] Preparation of porous carbon nitride sodium alginate hydrogel: Disperse melamine and cyanuric acid in a molar ratio of 1:1-2:1 in 100ml deionized water, stir for 24 hours, and dry to obtain a white solid that is porous Carbon Nitride Precursor. Place in the grinder and grind thoroughly to fine particles. The white porous carbon nitride precursor was sintered in a tube furnace under the protection of nitrogen. The sintering temperature was 550 degrees, the heating rate was 5 degrees per minute, and the sintering time was 4 hours. Finally, yellow solid porous carbon nitride was obtained; Yellow porous carbon nitride is dispersed in 5g SA (6%) solution, fully stirred, and ultrasonically; the mixed solution is concentrated at 80 degrees to obtain a viscous precursor solution; put the precursor solution into figure 1 In the injection tube of the automatic extrusion device shown, the extrusion rate is set to 100ml / h, and the size of the needle is adjusted according to the ne...
Embodiment 3
[0040] Nano-CeZnO x Preparation of sodium alginate hydrogel doped with porous carbon nitride: disperse 300 mg of porous carbon nitride prepared in the above manner in 50 ml of deionized water, stir thoroughly for 2 hours, and sonicate for 1 hour. Light yellow CeZnO x Put into the above-mentioned carbon nitride dispersion, fully stir for 2 hours, and sonicate for 1 hour; pour 5 g of SA (6%) solution into the above-mentioned mixed solution, stir for 2 hours, and sonicate for 1 hour; the mixed solution is concentrated at 80 degrees to obtain Viscous precursor solution; put the precursor solution in figure 1 In the injection tube of the automatic extrusion device shown, set the extrusion rate to 100ml / h, adjust the size of the needle as required, and the size range of the obtained gel particle size is 3-8mm; After being kept in the pool for 12 hours, it was poured into deionized water for preservation.
[0041] Application of photocatalytic fluidized bed: The fine mesh is made ...
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