a nc-pt/cb 4 Composite catalyst and preparation method thereof
A composite catalyst, CB4 technology, applied in the field of electrocatalysis, can solve problems such as low conductivity, and achieve the effects of strong anti-poisoning ability, easy control and simple process
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Embodiment 1
[0041] (1) Weigh 1g of commercial CB with an average particle size of 30nm 4 Carrier, add 500mL of ethanol / water mixture with a volume ratio of 0.05:1, and sonicate in an ultrasonic tank to make it uniformly dispersed to form CB 4 Carrier suspension; 75 mg of soluble starch (abbreviated as SS) was dissolved in 75 mL of deionized water at 80°C to obtain an aqueous starch solution.
[0042] (2) H containing 0.25 g of Pt 2 PtCl 6 It was added to 0.5 L of ethylene glycol, adjusted to pH 10 with 2 mol / L NaOH solution, and then heated and stirred at 120 °C to reflux until the color of the solution became brown-black to obtain a Pt colloidal solution. CB described in step (1) 4 The suspension was slowly poured into the Pt colloid solution, and the Pt nanoparticles were loaded on the nano-CB by heating and stirring at 120 °C for 2 hours. 4 surface, prepared Pt / CB 4 suspension. Then, the starch aqueous solution described in step (1) was slowly added into it, and the heating, stir...
Embodiment 2
[0051] (1) Weigh 1g of commercial CB with an average particle size of 30nm 4 Carrier, add 400 mL of ethanol / water mixture with a volume ratio of 1:1, and sonicate in an ultrasonic tank to make it uniformly dispersed to form CB 4 Carrier suspension; 100 mg of soluble starch (abbreviated as SS) was dissolved in 100 mL of deionized water at 80° C. to obtain an aqueous starch solution.
[0052] (2) H containing 0.25 g of Pt 2 PtCl 6 It was added to 1.25L ethylene glycol, adjusted to pH 10 with 3mol / L NaOH solution, and then heated and stirred at 150°C to reflux until the color of the solution became brown-black to obtain a Pt colloidal solution. CB described in step (1) 4 The suspension was slowly poured into the Pt colloid solution, and heated and stirred at 150 °C for 4 hours, so that the Pt nanoparticles were loaded on the nano-CB. 4 surface, prepared Pt / CB 4 suspension. Then the starch aqueous solution described in step (1) was slowly added to it, continued to heat, stir...
Embodiment 3
[0056] (1) Weigh 1g of commercial CB with an average particle size of 30nm 4 Carrier, add 300 mL of ethanol / water mixture with a volume ratio of 5:1, and sonicate in an ultrasonic tank to uniformly disperse it to form CB 4 Carrier suspension; 250 mg of soluble starch (abbreviated as SS) was dissolved in 125 mL of 70° C. deionized water to obtain an aqueous starch solution.
[0057] (2) H containing 1.25 g of Pt 2 PtCl 6 It was added to 2 L of ethylene glycol, adjusted to pH 8 with 2 mol / L NaOH solution, and then heated and stirred at 100 °C to reflux until the color of the solution became brown-black to obtain a Pt colloidal solution. CB described in step (1) 4 The suspension was slowly poured into the Pt colloid solution, and the Pt nanoparticles were loaded on the nano-CB with heating and stirring at 100 °C for 1 hour. 4 surface, prepared Pt / CB 4 suspension. Then slowly add the starch aqueous solution described in step (1), continue heating and stirring at 100 ° C for ...
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