Template-free preparation method for double-metal multi-shell yolk-shell nano hollow spheres
A template-free, bimetallic technology, applied in the direction of zinc oxide/zinc hydroxide, cobalt oxide/cobalt hydroxide, etc., can solve the problems of high cost, complicated process, high energy consumption, etc., and achieve low cost, broad application prospects, energy The effect of low consumption
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Embodiment 1
[0027] (1) Dissolve 0.1g zinc nitrate hexahydrate, 0.2g cobalt nitrate hexahydrate and 0.09g terephthalic acid in a mixed solvent composed of 30mL N-N dimethylformamide and 15mL glycerol, and stir for 2h to form a uniform transparent solution;
[0028] (2) Move the material obtained in step (1) into a polytetrafluoroethylene-lined reactor, and react at 150° C. for 4 hours;
[0029] (3) After washing the reaction product obtained in step (2) with ethanol for several times, put it in an oven and dry it at 80°C for 24 hours, then put it in a muffle furnace and heat it up to 500°C at a rate of 1°C / min, and then keep it warm until 2h, after cooling, get as figure 1 Cobalt-zinc bimetallic multi-shell hollow nanospheres shown.
Embodiment 2
[0031] (1) Dissolve 0.12g of manganese chloride tetrahydrate, 0.18g of cobalt nitrate hexahydrate and 0.09g of terephthalic acid in a mixed solvent composed of 30mLN-N dimethylformamide and 15mL of glycerin, and stir for 2h Form a homogeneous and transparent solution;
[0032] (2) Move the material obtained in step (1) into a polytetrafluoroethylene-lined reactor, and react at 150° C. for 4 hours;
[0033] (3) After washing the reaction product obtained in step (2) with ethanol for several times, put it in an oven and dry it at 80°C for 24 hours, then put it in a muffle furnace and heat it up to 500°C at a rate of 1°C / min, and then keep it warm until 2h, after cooling, get as figure 2 Cobalt-manganese bimetallic multi-shell hollow nanospheres shown.
Embodiment 3
[0035] (1) Dissolve 00.1g nickel nitrate hexahydrate, 0.2g cobalt nitrate hexahydrate and 0.09g terephthalic acid in a mixed solvent composed of 30mL N-N dimethylformamide and 15mL glycerol, and stir for 2h to form Uniform and transparent solution;
[0036] (2) Move the material obtained in step (1) into a polytetrafluoroethylene-lined reactor, and react at 150° C. for 3 hours;
[0037] (3) After washing the reaction product obtained in step (2) with ethanol for several times, put it in an oven and dry it at 80°C for 24 hours, then put it in a muffle furnace and heat it up to 500°C at a rate of 1°C / min, and then keep it warm until 2h, after cooling, get as image 3 Cobalt-nickel bimetallic multi-shell hollow nanospheres shown.
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