A silver-doped zirconia photocatalyst and its preparation method and use
A zirconium dioxide, photocatalyst technology, applied in metal/metal oxide/metal hydroxide catalysts, physical/chemical process catalysts, chemical instruments and methods, etc., to achieve high efficiency, reduce agglomeration, and reduce the band gap Effect
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Embodiment 1
[0017] Take 6 parts of 1.08g of industrial grade zirconium dioxide, put them into a muffle furnace, and calcinate at 450°C for 5h to obtain an intermediate sample 1; put the intermediate sample 1 into 10mL of 10mol / L NaOH solution and stir, and drop into 0.1mo / L AgNO 3 solution, each part of AgNO 3 The dripping amount of the solution is calculated based on the mass fraction of silver in zirconia being 0%, 0.1%, 0.2%, 0.4%, 0.6%, and 1%, and the stirring is continued for 1h to obtain the intermediate sample 2; the intermediate sample 2 Put it in an autoclave, and conduct a hydrothermal reaction at 180°C for 24 hours to obtain an intermediate sample 3; then put the intermediate sample 3 into a centrifuge tube, wash with centrifugation until the pH value of the supernatant is 7, and dry it at room temperature to obtain different Silver-doped zirconia photocatalysts in silver-doped amounts. When the silver doping amount is 0%, that is, the silver-free zirconium dioxide photocata...
Embodiment 2
[0020] Take 4 parts of industrial grade zirconia 1.08g, put them into a muffle furnace, and calcinate at 300°C for 5h to obtain an intermediate sample 1; put the intermediate sample 1 into 10mL6mol / L NaOH solution and stir, and drop into 0.45mo / L AgNO 3 solution, AgNO 3 The dripping amount of the solution is calculated based on the mass fraction of silver in zirconia being 0.2%. Continue to stir for 1 hour to obtain intermediate sample 2; , hydrothermal reaction at 180°C and 240°C for 48 hours to obtain intermediate sample 3; then put intermediate sample 3 into a centrifuge tube, centrifuge and wash until the pH value of the supernatant was 7, and dry it at room temperature to obtain different hydrothermal reaction samples. temperature of silver-doped zirconia photocatalysts. The hydrogen production capacity of silver-doped zirconia photocatalysts at different hydrothermal reaction temperatures was evaluated using the device and method in Example 1. The relationship between...
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