Monatomic metal/nitrogen co-doped hollow carbon sphere photo-electro-catalytic material as well as preparation method and application thereof
An electrocatalytic material, hollow carbon sphere technology, applied in the direction of separators/films/diaphragms/spacers, circuits, electrical components, etc., can solve the problem of uncontrollable metal single atom content and product morphology, metal waste, and difficulty in uniformity Dispersion and other problems, to achieve the effect of improving the performance of lithium-sulfur batteries, improving electrical performance, and improving electrical performance
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Embodiment 1
[0033] Example 1: Preparation of monoatomic iron / nitrogen co-doped hollow carbon sphere material
[0034] Weigh 1 g of silica hard template and sonicate it for 30 min to fully and evenly disperse it in 150 ml of water, making it solution a; weigh 750 mg of dopamine hydrochloride and 50 mg of porphyrin iron, add it into 30 ml of water and stir evenly, making it a solution b; Weigh 500 mg of tris hydroxymethylaminomethane and add it to 20 ml of deionized water and mix it evenly to make it solution c; add b and c solutions into solution a successively, stir mechanically at 800 r for 6 h at room temperature, and the products are sequentially After washing with water and ethanol three times each, it was collected by centrifugation, and the product collected by centrifugation was dried in an oven at 60 °C for 12 h to obtain a brown powder. Then dry the powder in N 2 The heat treatment was carried out under the atmosphere, the temperature was raised to 900 °C, and the intermediate p...
Embodiment 2
[0035] Example 2: Preparation of single-atom cobalt / nitrogen co-doped hollow carbon sphere material
[0036]Weigh 1 g of silica hard template and ultrasonically disperse it in 150 ml of deionized water, stir evenly to make it solution a; weigh 750 mg of dopamine hydrochloride and 20 mg of cobalt acetylacetonate and add it to 30 ml of water and stir evenly to make it Solution b; Weigh 500 mg tris hydroxymethyl aminomethane and add it into 20 ml deionized water and mix it evenly to make it solution c; add b and c solutions dropwise into a solution in turn, mechanically stir at 800 r for 1 h at room temperature, the product After washing with water and ethanol three times each, the product was collected by centrifugation, and the product collected by centrifugation was dried in an oven at 60 °C for 12 h to obtain a brown powder. Then dry the powder in a tube furnace, N 2 Heat treatment was carried out under the atmosphere, the temperature was raised to 900 °C, and carbonization ...
Embodiment 3
[0037] Example 3: Preparation of single-atom nickel / nitrogen co-doped hollow carbon material
[0038] Weigh 1 g of silica hard template and ultrasonically disperse it in 150 ml of deionized water, stir evenly to make it a solution a; weigh 750 mg of dopamine hydrochloride and 30 mg of nickel acetylacetonate into 30 ml of water and stir evenly to make it Solution b; Weigh 500 mg tris hydroxymethyl aminomethane and add it into 20 ml deionized water and mix it evenly to make it solution c; add b and c solutions dropwise into a solution in turn, mechanically stir at 800 r for 1 h at room temperature, the product After washing with water and ethanol three times each, the product was collected by centrifugation, and the product collected by centrifugation was dried in an oven at 60 °C for 12 h to obtain a brown powder. Then dry the powder in a tube furnace, N 2 Heat treatment was carried out under the atmosphere, the temperature was raised to 900 °C, and carbonization and pyrolysis...
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