A flexible film that degrades organic pollution in wastewater under natural conditions
A natural condition, flexible film technology, applied in the field of materials, can solve problems such as easy pollution and difficult to recycle powder, and achieve the effect of improving electronic life, reducing raw material costs, and reducing transportation costs.
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Embodiment 1
[0047] The flexible film that the different catalytic material of embodiment 1 is made is to the degradation effect of rhodamine B
[0048] According to the catalytic material disclosed in the above-mentioned method 1, the flexible film was prepared by the above-mentioned method 2, and then, the degradation experiment of rhodamine B was carried out according to the above-mentioned method 3. The selection of catalysts and the degradation effect on Rhodamine B are shown in Table 1 below. When the catalytic material is BiVO 4 -Bi 0.5 Na 0.5 TiO 3 When using composite materials, the degradation effect on Rhodamine B can be seen in Figure 5 shown.
[0049] Table 1 Degradation effect of different catalytic materials on rhodamine B
[0050]
Embodiment 2
[0051] Example 2 Degradation Mechanism of Photoelectric-Piezoelectric Composite Catalytic Material to Rhodamine B
[0052] Photoelectric-piezoelectric composite catalytic materials (BiVO 4 -Bi 0.5 Na 0.5 TiO 3 Composite materials) Under the action of vibration and sunlight, electrons absorb energy, excite and transition to the conduction band, separate from holes, and generate electron-hole pairs. The holes and electrons react with the water in the solution to generate hydroxyl radicals and superoxide radicals respectively, and the reaction formula is as follows:
[0053] Bi 0.5 Na 0.5 TiO 3 @BiVO 4 + mechanical energy + solar energy → Bi 0.5 Na 0.5 TiO 3 @BiVO 4 (h + +e - ) (1)
[0054] o 2 +e - → O 2 - (2)
[0055] h 2 O+h + →·OH+H + (3)
[0056] Oh - + h + →·OH (4)
[0057] 2H + +·O 2 - +e - →H 2 o 2 (5)
[0058] h 2 o 2 →2·OH (6)
[0059] The generated hydroxyl radicals and superoxide radicals continuously attack the carbon chains in ...
Embodiment 3
[0062]The content of embodiment 3 catalytic materials and the influence of flexible film thickness on degradation effect
[0063] The degradation effect on rhodamine B was verified by controlling the content of different catalytic materials and spinning time, and the specific parameters are shown in Table 2 below. See the results for details Figure 6 as shown ( Figure 6 For BiVO 4 -Bi 0.5 Na 0.5 TiO 3 The degradation effect of the flexible film prepared by the composite material), the results show that, as can be seen from Figure a and Figure b, in the case of the same catalytic material content, the longer the spinning time, the longer the flexible film, and the change in the thickness of the flexible film , has no significant effect on the degradation effect of rhodamine B, indicating that the thickness of the flexible film has little effect on the degradation effect of rhodamine B. It can be seen from Figure b and Figure c that, in the case of the same spinning time...
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Abstract
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