A kind of carbon-supported CO core-pt shell nanoparticle catalyst and preparation method thereof
A nanoparticle and catalyst technology, which is applied in catalysis and related energy fields, can solve the problems of high cost and low catalytic performance, and achieve high electrocatalytic activity for oxygen reduction and good long-term stability.
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Embodiment 1
[0039] Preparation of carbon-supported Co nanoparticles
[0040] Take 22mg of Co(Ac) 2 4H 2 O, dissolved in 20 mL deionized water. Weigh 53 mg potassium sodium tartrate and dissolve it in 5 mL deionized water. The above two solutions were mixed and stirred for 6h to obtain solution s-1. Take 90.6mg of carbon carrier (XC-72R), ultrasonically disperse it in 100mL deionized water in advance, then mix it with solution s-1, stir evenly, overnight. Then the oil bath of the above dispersion was heated to 60°C, 10mL of hydrazine hydrate (mass fraction 40%) (density 1.03g / mL, m=4.12g) was added dropwise, then the temperature was raised to 85°C, and the reaction was kept for 10h. Cool down, filter with suction, wash with water, and disperse the obtained product (marked as Co / C) in 20 mL of chloroform (density 1.5 g / mL, m=30 g).
[0041] figure 1 This is the XRD pattern of the synthesized carbon-supported Co nanoparticles (Co / C). It can be seen from the figure that, compared with t...
Embodiment 2
[0053] Preparation of carbon-supported Co nanoparticles
[0054] Take 22mg of Co(Ac) 2 4H 2 O, dissolved in 20 mL deionized water. Weigh 88 mg potassium sodium tartrate and dissolve it in 8 mL deionized water. The above two solutions were mixed and stirred for 7h to obtain solution s-1. Take 264mg of carbon carrier (multi-walled carbon nanotubes), ultrasonically disperse in 100mL deionized water in advance, then mix with solution s-1, stir evenly, overnight. Then the oil bath of the above dispersion liquid was heated to 70°C, 88 mg of sodium borohydride was added, and then the temperature was raised to 95°C, and the reaction was kept for 2.5 hours. Cool down, filter with suction, wash with water, and disperse the obtained product (marked as Co / C) in 30 g of chloroform.
[0055] Preparation of Carbon-Supported Co Core-Pt Shell Nanoparticles
[0056] Add 1.05g of 1-(3-aminophenyl)-3-methyl-2-imidazolidinone to the chloroform dispersion containing 190mg Co / C, sonicate for 3...
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