A kind of tantalum compound electrocatalyst based on platinum alloy and its preparation method and application
A technology of compound electricity and platinum alloy, applied in the field of electrocatalysis, can solve the problems of high price and inability of production enterprises to purchase, and achieve the effects of easy regulation, low cost, and improved catalytic activity and stability.
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Embodiment 1
[0029] Example 1: PtCo / Ta 3 N 5 Synthesis
[0030] 1) Add 30 mL of 1 mol / L potassium hydroxide aqueous solution and 0.4 g of tantalum pentoxide into 30 mL of distilled water for 10 minutes of ultrasonication, then transfer the mixture to an autoclave, and place the autoclave in an oven at 160 °C React at a medium constant temperature for 12 hours. After the reaction is completed, filter the reaction solution in the high-pressure reactor, wash the filter residue with deionized water, and then dry it in a vacuum oven at 80 °C for 12 hours to obtain potassium tantalate;
[0031] 2) The potassium tantalate, potassium chloride and potassium fluoride obtained in step 1) were thoroughly mixed at a molar ratio of 1.5:2:1, and then calcined in a muffle furnace at 550°C for 2 h to obtain tantalum doped with anions Potassium acid precursor material;
[0032] 3) The anion-doped potassium tantalate precursor obtained in step 2) was placed in a tube furnace and calcined in an ammonia atm...
Embodiment 2
[0038] Example 2: PtNi / Ta 3 N 5 Synthesis
[0039] 1) Add 30 mL of 1 mol / L potassium hydroxide aqueous solution and 0.4 g of tantalum pentoxide to 30 mL of distilled water, and after ultrasonication for 10 minutes, transfer the mixture to an autoclave, which is placed in an oven at 160 °C React at a constant temperature for 12 h, then wash with deionized water, and dry in a vacuum oven at 80 °C for 12 h to obtain potassium tantalate;
[0040] 2) The potassium tantalate, potassium chloride and potassium fluoride obtained in step 1) were thoroughly mixed at a molar ratio of 1.5:2:1, and then calcined in a muffle furnace at 550°C for 2 h to obtain tantalum doped with anions Potassium acid precursor material;
[0041] 3) The anion-doped potassium tantalate precursor obtained in step 2) was placed in a tube furnace and calcined in an ammonia atmosphere at a calcining temperature of 950°C for 2 hours and an ammonia flow rate of 200 mL / min , the calcined product was washed 4 time...
Embodiment 3
[0045] Embodiment 3: the synthesis of PtCo / TaON
[0046] 1) Add 30 mL of 1 mol / L potassium hydroxide aqueous solution and 0.4 g of tantalum pentoxide to 30 mL of distilled water, and after ultrasonication for 10 minutes, transfer the mixture to an autoclave, which is placed in an oven at 160 °C React at a constant temperature for 12 h, then wash with deionized water, and dry in a vacuum oven at 80 °C for 12 h to obtain potassium tantalate;
[0047] 2) The potassium tantalate, potassium chloride and potassium fluoride obtained in step 1) were thoroughly mixed at a molar ratio of 1.5:2:1, and then calcined in a muffle furnace at 550°C for 2 h to obtain tantalum doped with anions Potassium acid precursor material;
[0048] 3) The anion-doped potassium tantalate precursor obtained in step 2) was placed in a tube furnace and calcined under an ammonia atmosphere at a calcining temperature of 850 °C for 2 hours and an ammonia gas flow rate of 50 mL / min , the calcined product was wa...
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