Highly ordered PdAg alloy catalytic material, preparation method thereof and application of highly ordered PdAg alloy catalytic material in electrocatalytic reduction of carbon dioxide
A catalytic material, highly ordered technology, applied in the direction of electrodes, electrolytic components, electrolytic process, etc., can solve the problems of low CO current density, difficult to achieve precise and controllable, etc., achieve high CO current density, which is conducive to large-scale production , the effect of mild reaction conditions
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Embodiment 1
[0042] (1) Add 5 mL of AgNO to 50 mL of ethylene glycol (EG) solution 3 solution (35mmol / L), 5mL K 2 PdCl 4 (35 mmol / L) and 1 mL of 1 mol / L NaOH solution, refluxed at 80 °C for 2 h, and vigorously stirred, after cooling, vacuum filtered, and the obtained material was vacuum dried at 80 °C overnight.
[0043] (2) Load the dried powder into a porcelain boat and put it into a tube furnace, first pump the tube furnace to a vacuum, and then program the temperature under a nitrogen atmosphere, set a heating rate of 10 °C / min, and set the temperature at 400 °C at a temperature of 400 °C. Baked at constant temperature for 2 hours; the tube furnace was lowered to room temperature by natural cooling, the porcelain boat was taken out and the material was placed in a glass bottle for sealing and preservation, that is, a PdAg alloy catalyst with a high degree of order was obtained.
[0044] (3) Take 1980 μL of a 1:1 solution of deionized water and isopropanol, and 20 μL of a 5% naphthol ...
Embodiment 2
[0056] (1) Take 150mg carbon powder and 500mg cetyltrimethylammonium bromide (CTAB), disperse in 50mL EG solution, ultrasonically crush, add 5mL AgNO 3 solution (35mmol / L), 5mL K 2 PdCl 4 (35 mmol / L) and 1 mL of 1 mol / L NaOH solution, reflux at 70-90 °C for 2 h, and vigorously stir, after cooling, vacuum filter, and vacuum dry the obtained material at 80 °C overnight.
[0057] (2) Load the dried powder into the porcelain boat and put it into the tube furnace, first pump the tube furnace to vacuum, and then put it in the Ar / H 2 Program the temperature under the atmosphere, set the heating rate to 10 °C / min, and bake at a constant temperature of 500 °C for 2 hours; reduce the tube furnace to room temperature by natural cooling, take out the porcelain boat and put the material into a glass bottle for sealing and preservation, that is, A carbon-supported high-order PdAg alloy catalyst was obtained.
[0058] (3) Take 1980 μL of 1:1 deionized water and isopropanol solution, 20 μL...
Embodiment 3
[0061] (1) Take 150 mg of bismuth oxide (Bi 2 O 3 ), dispersed in 50mL EG solution, sonicated, added 5mL AgNO 3 solution (35mmol / L), 5mL K 2 PdCl 4 (35 mmol / L) and 1 mL of 1 mol / L NaOH solution, reflux at 70-90 °C for 2 h, and vigorously stir, after cooling, vacuum filter, and vacuum dry the obtained material at 80 °C overnight.
[0062] (2) Load the dried catalyst powder into a porcelain boat and put it into a tube furnace, first pump the tube furnace to a vacuum, and then program the temperature under nitrogen atmosphere, set the heating rate to 5°C / min, and set the temperature to 300°C at 300°C. calcined at a constant temperature for 5 hours; the tube furnace was lowered to room temperature by natural cooling, the porcelain boat was taken out and the material was placed in a glass bottle for sealing to obtain a highly ordered metal oxide supported PdAg alloy catalyst.
[0063] (3) Take 1980 μL of 1:1 deionized water and isopropanol solution, 20 μL of 5% naphthol solutio...
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