Transition metal doped platinum-carbon catalyst as well as preparation method and application thereof
A platinum-carbon catalyst, transition metal technology, applied in nanotechnology for materials and surface science, electrical components, battery electrodes, etc., can solve the problem of poor current density and durability of membrane electrodes, slow redox reactions, H proton transfer rate Slow and other problems, to achieve the effect of easy control, easy batching, improved catalytic performance and durability
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Embodiment 1
[0070] This embodiment provides a method for preparing a transition metal-doped platinum-carbon catalyst, comprising the following steps:
[0071] (1) Weigh 0.05g Ketjen Black in a reaction vessel, add 20mL of water to it, place the mixed solution in an ultrasonic pulverizer and homogenizer for 10 minutes to obtain a uniform solution, and then continue to feed nitrogen into it, and carry out after 30 minutes. next step reaction;
[0072] (2) Take 400 μL of chloroplatinic acid solution containing 0.1 g / mL of platinum, 50 μL of ferric chloride solution containing 0.1 g / mL of iron, and 50 μL of cobalt chloride solution containing 0.1 g / mL of cobalt, and add them to the preparation prepared in step (1). In the mixed solution, under the protection of nitrogen, continue to stir for 1h, so that the ions are fully adsorbed to the surface of Ketjen black;
[0073] (3) Weigh 0.1g of sodium borohydride, and under the protection of nitrogen, quickly add it to the mixed solution obtained in...
Embodiment 2
[0081] This embodiment provides a method for preparing a transition metal-doped platinum-carbon catalyst, comprising the following steps:
[0082] 1) Weigh 0.048g Vulcan XC-72 into the reaction vessel, add 15mL of water to it, place the mixed solution in an ultrasonic homogenizer to disperse evenly, and continue ultrasonication for 60min to obtain a uniform solution, and then continue to pass argon into it Gas, carry out next step reaction after 45min;
[0083] (2) Take 500 μL of potassium tetrachloroplatinate solution containing 0.1 g / mL of platinum, 10 μL of nickel chloride solution containing 0.1 g / mL of nickel, and 10 μL of copper chloride solution containing 0.1 g / mL of copper in step (1 ) in the prepared mixed solution, under the protection of argon, continue to stir for 6h, so that the ions are fully adsorbed to the surface of Vulcan XC-72;
[0084] (3) Weigh 0.3g of hydroxylamine hydrochloride, and under the protection of an inert gas, quickly add it to the mixed solu...
Embodiment 3
[0089] This embodiment provides a method for preparing a transition metal-doped platinum-carbon catalyst, comprising the following steps:
[0090] (1) Weigh 0.049g of carbon nanotubes in a reaction vessel, add 20mL of water to it, place the mixed solution in an ultrasonic homogenizer to disperse evenly, and continue ultrasonication for 30min to obtain a uniform solution, and then continuously inject helium into it Gas, carry out next step reaction after 30min;
[0091] (2) Take 450 μL of potassium hexachloroplatinate solution containing 0.1 g / mL of platinum, 30 μL of cobalt nitrate solution containing 0.1 g / mL of cobalt, and 30 μL of ammonium thiomolybdate solution containing 0.1 g / mL of molybdenum in step (1 ) in the prepared mixed solution, under the protection of an inert gas, continue to stir for 3h, so that the ions are fully adsorbed to the surface of the carbon nanotubes;
[0092] (3) Weigh 0.15 g of potassium borohydride, and under the protection of helium, quickly ad...
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Abstract
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