Preparation method of high-activity g-C3N4 photocatalytic material with lamellar cracked microstructure
A photocatalytic material, g-c3n4 technology, applied in the field of photocatalytic materials, can solve the problems of high recombination rate of photogenerated carriers, unfavorable photocatalytic reaction, low photocatalytic activity, etc., to achieve broadened optical absorption range, simple process, The effect of enhanced photocatalytic activity
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Embodiment 1
[0033] Weigh 10g of urea with an electronic analytical balance, then weigh 1.0g of 2-ethylimidazole, put it into a mortar and grind it for 20min, then put it into a 100ml crucible, cover it, and place it in a muffle furnace with Sample 2 was obtained by heating at a rate of 5°C / min, calcination at a high temperature of 550°C for 2 h, and cooling to room temperature naturally. The XRD spectrum shows that the diffraction peak of sample 2 at 13.2° belongs to g-C 3 N 4 The (100) crystal plane; the 27.4° diffraction peak belongs to g-C 3 N 4 The (002) crystal plane of , corresponds to the interlayer stacking and planar structure filling in the aromatic ring system. Compared with the pure g-C in Comparative Example 1 3 N 4 Compared with the diffraction peaks, their diffraction characteristics are similar, and no other diffraction peaks appear, but the intensity of its diffraction peaks is significantly reduced after modification, and the half-peak width increases, indicating t...
Embodiment 2
[0035] Weigh 10g of urea with an electronic analytical balance, then weigh 1.6g of 2-ethylimidazole, put it into a mortar and grind it for 20min, then put it into a 100ml crucible, cover it, and place it in a muffle furnace with Sample 3 was obtained by heating at a rate of 5°C / min, calcination at a high temperature of 550°C for 2 h, and cooling to room temperature naturally. The XRD spectrum shows that adding 1.6g of 2-ethylimidazole g-C 3 N 4 In sample 3, two characteristic peaks appeared at both the 13.2° (100) crystal plane and the 27.4° (002) crystal plane, corresponding to the interlayer superposition and planar structure filling in the aromatic ring system. Pure g-C prepared in Comparative Example 1 3 N 4 Compared with the diffraction peaks, the XRD diffraction characteristics of sample 3 are similar, and no other diffraction peaks appear, indicating that it is still g-C after modification. 3 N 4 crystal phase. Compared with the sample prepared in Example 1, with...
Embodiment 3
[0037] Weigh 10g of urea with an electronic analytical balance, then weigh 2g of 2-ethylimidazole, put it into a mortar and grind for 20min, then put it into a 100ml crucible, cover it, and place it in a muffle furnace with 5 ℃ / min heating rate, calcination at a high temperature of 550 ℃ for 2 hours, and natural cooling to room temperature to obtain sample 4. The XRD spectrum shows that the sample 4 added with 2.0g of 2-ethylimidazole has two characteristic peaks at the 13.2° (100) crystal plane and 27.4° (002) crystal plane, corresponding to the layer in the aromatic ring system Overlapping and filling of planar structures. Pure g-C prepared in Comparative Example 1 3 N 4 Compared with the diffraction peaks, the XRD diffraction characteristics of sample 4 are similar, and no other diffraction peaks appear, indicating that it is still g-C after modification. 3 N 4 crystal phase. Compared with the sample prepared in Example 2, as the amount of 2-ethylimidazole increases, ...
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