A cobalt-coated carbon-supported platinum catalyst with proton transport function and preparation method thereof
A technology of platinum catalyst and coated carbon, which is applied in nanotechnology, structural parts, electrical components, etc. for materials and surface science, and can solve problems affecting the utilization rate of catalysts, etc.
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Embodiment 1
[0038] 1. Dissolve 1g of EC-300 carbon black carrier in 10ml of an aqueous solution of melamine with a concentration of 0.03g / mL, soak it for 10h, dry it in a vacuum oven at 80°C for 15h, and place it under N 2 Heat treatment at 500°C for 2 hours under atmosphere, and grind for later use.
[0039] 2. Using the Electroless Plating Method to Analyze Pure CoSO 4 .7H 2 O, CoCl 2 .6H 2 O as cobalt source, hydrazine hydrate as reducing agent, adding PdCl 4 As an activator, it increases the encapsulation rate. During the coating process, KOH is used as the dispersant, and the pH is preferably controlled at 12.5. The ratio of alkali to hydrazine is 6:1, and the reaction temperature is controlled at 89 °C. A layer of Co-coated C@Co core-shell structure is prepared on the surface of the above-mentioned doped carbon black.
[0040] 3. Take 0.18g of the treated C@Co core-shell particles and place them in an autoclave, add perfluoro 3,6-dioxa-4-methyl-7-octenesulfonyl fluoride (PSVE)...
Embodiment 2
[0057] 1. Dissolve 1g of XC-72 carbon black carrier in 15ml of melamine aqueous solution with a concentration of 0.03g / mL, soak it for 10h, dry it in a vacuum oven at 80°C for 15h, and place it under N 2 Heat treatment at 500°C for 2 hours under atmosphere, and grind for later use.
[0058] 2. Using the Electroless Plating Method to Analyze Pure CoSO 4 .7H 2 O, CoCl 2 .6H 2 O as cobalt source, hydrazine hydrate as reducing agent, adding PdCl 4 As an activator, it increases the encapsulation rate. During the coating process, KOH was used as the dispersant, and the pH was controlled at 1.2. The ratio of alkali to hydrazine is 5:1, and the reaction temperature is controlled at 90 °C. A core-shell structure of Co-coated layer C@Co is prepared on the surface of the above-mentioned doped carbon black.
[0059] 3. Take 0.12g of the treated C@Co core-shell structure and place it in an autoclave, add the aqueous solution of perfluoro 3,6-dioxa-4-methyl-7-octenesulfonyl fluoride m...
Embodiment 3
[0068] 1. Dissolve 1g of EC-300 carbon black carrier in 20mL of an aqueous solution of pyridine with a concentration of 0.05g / mL, soak it for 10h, dry it in a vacuum oven at 80°C for 15h, and place it under N 2 Heat treatment at 500°C for 2 hours under atmosphere, and grind for later use.
[0069] 2. Using the Electroless Plating Method to Analyze Pure CoSO 4 .7H 2 O, CoCl 2 .6H 2 O as cobalt source, hydrazine hydrate as reducing agent, adding PdCl 4 As an activator, it increases the encapsulation rate. During the coating process, KOH is used as the dispersant, and the pH is preferably controlled at 12.5. The ratio of alkali to hydrazine is 6:1, and the reaction temperature is controlled above 85°C. A layer of Co-coated C@Co core-shell structure is prepared on the surface of the above-mentioned doped carbon black.
[0070] 3. Take 0.12g of the treated core-shell structure of the Co coating layer C@Co and place it in an autoclave, add perfluoro 3,6-dioxa-4-methyl-7-octene...
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