Preparation and application of perovskite type metal cerium salt with transition metal ion regulation and control performance
A transition metal ion, perovskite-type technology is applied in the field of preparation of perovskite-type transition metal cerium salt composite photocatalytic materials, and achieves the effects of simple preparation method, readily available raw materials and stable performance
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Embodiment 1
[0026] Preparation of Perovskite Transition Metal Cerium Salt Photocatalyst CeFeO by Sol-Gel Method 3 The steps are as follows: weighing equimolar ratio of ferric nitrate and cerium nitrate, dispersing in deionized water to obtain A solution, adding a certain amount of anhydrous citric acid (such as 2 times the cation concentration, referring to 2 of the sum of transition metal ions and Ce3+ ions). times) into an appropriate amount of ethylene glycol solution, sonicate it for 5 minutes and wait until it is completely dissolved to obtain solution B dropwise into solution A, and then magnetically stir for 1 h to obtain a transparent solution; place this transparent solution in a blast oven , dried at 70°C for 24h, the obtained product was placed in a mortar for grinding, poured into a crucible after grinding, then placed in a muffle furnace, and heated to 5°C / min in an air atmosphere. 400 ℃ and hold for 120min for pretreatment to remove impurities. The pretreated mixture was gr...
Embodiment 2
[0029] Preparation of Perovskite Transition Metal Cerium Salt Photocatalyst CeCoO by Sol-Gel Method 3 The steps are as follows: weighing equimolar ratio of cobalt nitrate and cerium nitrate, dispersing in deionized water to obtain A solution, adding a certain amount of anhydrous citric acid (2 times the cation concentration) into an appropriate amount of ethylene glycol solution, and adding the solution to the solution. It was sonicated for 5 minutes until it was completely dissolved to obtain B solution dropwise into A solution, and then magnetically stirred for 1 hour to obtain a transparent solution; the transparent solution was placed in a blast oven, dried at 70 °C for 24 hours, and the obtained product was Placed in a mortar for grinding, poured into a crucible after grinding, then placed in a muffle furnace, heated to 400 °C at a heating rate of 5 °C / min in an air atmosphere, and held for 120 min for pretreatment to remove impurities. The pretreated mixture was ground a...
Embodiment 3
[0031] Preparation of Perovskite Transition Metal Cerium Salt Photocatalyst CeCuO by Sol-Gel Method 3 The steps are as follows: weighing equimolar ratio of copper nitrate and cerium nitrate, dispersing in deionized water to obtain A solution, adding a certain amount of anhydrous citric acid (2 times the cation concentration) into an appropriate amount of ethylene glycol solution, and adding the solution to the solution. It was sonicated for 5 minutes until it was completely dissolved to obtain B solution dropwise into A solution, and then magnetically stirred for 1 hour to obtain a transparent solution; the transparent solution was placed in a blast oven, dried at 70 °C for 24 hours, and the obtained product was Placed in a mortar for grinding, poured into a crucible after grinding, then placed in a muffle furnace, heated to 400 °C at a heating rate of 5 °C / min in an air atmosphere, and held for 120 min for pretreatment to remove impurities. The pretreated mixture was ground a...
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