Flake silver @ silver iodate visible light photocatalyst and preparation method thereof
A silver iodate and photocatalyst technology, applied in the field of photocatalytic materials, can solve the problems of poor visible light absorption, high carrier recombination rate, easy photocorrosion, etc., and achieves improved photocatalytic performance, improved electron mobility, combined with solid effect
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Embodiment 1
[0028] Weigh 5.31g potassium iodate, dissolve in 40mL water, weigh 4.28g silver nitrate, dissolve in 40mL water, heat the two solutions to 40 o C. Then quickly add the silver nitrate solution to the potassium iodate solution under stirring to obtain a white suspension, and continue stirring for 30 minutes; dissolve 0.06g of glucose in 5 mL of water, and then add the glucose solution to the Silver iodate suspension, stirred for 30min, filtered, washed, 50 o C dried for 4h to obtain a blue-gray powder.
[0029] attached figure 2 (a) is the X-ray diffraction pattern of the sample obtained in this example. It can be seen from the figure that the product is silver iodate, because the diffraction peak of silver iodate is very strong and sharp, and because the amount of loaded Ag is relatively low, and Since the strongest diffraction peak of Ag coincides with the (061) crystal plane of silver iodate, there is no diffraction peak of Ag in the X-ray diffraction pattern. attached ...
Embodiment 2
[0031] Weigh 5.26g of potassium iodate and 4.22g of silver nitrate, dissolve them in 20 mL of water respectively, quickly add the potassium iodate solution into the silver nitrate solution at room temperature with stirring to obtain a white suspension, and stir for 50 minutes. Weigh 0.006g of potassium borohydride and dissolve it in 1mL of water, add the potassium borohydride solution while stirring to obtain a gray-green suspension, continue to stir at room temperature for 30min, filter and wash, 80o C dried for 2 h to obtain gray-green powder.
[0032] attached figure 2 (b) is the X-ray diffraction pattern of the sample obtained in this example. attached Figure 4 It is the SEM photograph of the product obtained in this embodiment. It can be seen that the sample has a sheet-like structure, and the edges of the sheet are loaded with Ag nanoparticles.
Embodiment 3
[0034] Weigh 5.31g of sodium iodate and 4.57g of silver nitrate, dissolve them in 30mL of water respectively, add the sodium iodate solution to the silver nitrate solution at room temperature with stirring, and heat the mixed solution to 50 o C, to obtain a white suspension, stir for 20min; dissolve 0.02g of ascorbic acid in 3mL of water, add it into the suspension of silver iodate while stirring, and turn it into a blue-gray suspension, filter and wash after stirring for 30min, and 60 o C dried for 3.6h to obtain a blue-gray powder.
[0035] attached Figure 5 It is the SEM photograph of the product obtained in this embodiment. It can be seen that the sample has a sheet-like structure, and the edges of the sheet are loaded with Ag nanoparticles.
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