An iron-based amorphous alloy/g-c 3 no 4 Composite photocatalyst and its preparation method and application
An iron-based amorphous alloy, g-c3n4 technology, applied in catalyst activation/preparation, physical/chemical process catalysts, chemical instruments and methods, etc., can solve problems such as difficult to be recycled, achieve easy mass production, and improve photocatalysis Degradability, effect of excellent azo dye degradability
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
Embodiment 1
[0037] Preparation of Fe 78 Si 9 B 13 / g -C 3 N 4 Composite photocatalyst:
[0038] (1) Preparation of Fe 78 Si 9 B 13 Preparation of amorphous powder: Fe, Si, and B raw materials with a purity of 99% are pressed by Fe 78 Si 9 B 13 Amorphous alloy atomic percentage conversion weighing, and induction melting to prepare FeSiB master alloy; the FeSiB amorphous alloy ingot was melted by induction heating, under the protection of high-purity argon, the alloy melt was melted from a diameter of 0.8mm by high pressure Nozzle ejected, prepared as Fe 78 Si 9 B 13 Amorphous powder, the whole dynamic pressure range is 0~8MPa.
[0039] (2) Preparation of g-C 3 N 4 Powder: Put 6g of melamine into six clean crucibles respectively, place the crucibles with melamine in the muffle furnace, sinter at 823K for 4 hours, and the heating rate is 5K / min. After the sintering is completed, turn off the power, immediately Furnace is lowered from 823K to room temperature, and g-C 3 N 4 ...
Embodiment 2
[0046] This example studies FeSiB / g-C prepared by ball milling3 N 4 -20,10,5,3,2 Ability of the composite photocatalyst to photocatalytically degrade Acid Orange 7 and the recyclability of the composite photocatalyst.
[0047] The degradation reaction process is as follows:
[0048] A. At room temperature, place a beaker with a volume of 500mL, add 250mL of Acid Orange 7 solution with a concentration of 20mg / L, and adjust the pH to 7;
[0049] B, according to the amount of Acid Orange 7 solution, the FeSiB / g-C prepared in Example 1 3 N 4 The composite photocatalyst is weighed according to the dosage of 2g / L and then put into the beaker. Under the irradiation of 300W xenon lamp, it is stirred by a mechanical stirring device, so that the acid orange 7 solution is fully exposed to the composite photocatalyst under 300W visible light to realize acidity Uniform degradation of Orange 7.
[0050] During the photocatalytic degradation process, use a disposable syringe to extract a...
Embodiment 3
[0060] This embodiment studies solution pH to FeSiB / g-C 3 N 4 -3 Effect of composite photocatalyst on photocatalytic degradation efficiency of Acid Orange 7.
[0061] A group of parallel experiments were carried out with reference to the degradation method of Example 2, the difference being that the pH of the solution was adjusted to 2, 3, 7, 9, 10 and 11. Figure 8 For different pH values, FeSiB / g-C 3 N 4 -3 Composite Photocatalyst Photocatalytic Degradation of C in Acid Orange 7 t / C 0 vs. time graph, it can be seen that it not only has excellent degradation performance under acidic conditions, but also has excellent degradation performance under neutral conditions and weak alkaline conditions. When the pH is adjusted to 2-10, the degradation rate is excellent.
PUM
Login to View More Abstract
Description
Claims
Application Information
Login to View More