Preparation method and application of cobalt-doped metal organic framework nanoparticles
A metal-organic framework and nanoparticle technology, applied in the field of materials, can solve the problems of limitation and large size of materials, and achieve the effects of long duration, small size and easy preparation
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Embodiment 1
[0032] Weigh 150mg 2.4mg terephthalic acid and polyvinylpyrrolidone dissolved in 6.4mL volume ratio of 5: 3 mixed solution of DMF and absolute ethanol, sonicated for 10 minutes to dissolve all the solids, placed on a magnetic stirring after agitating for 10 minutes, was added zinc nitrate hexahydrate and cobalt nitrate hexahydrate 11.35mg 11.6mg of a uniformly mixed, stirred until homogeneous clarification, was transferred to a 13mL teflon reaction vessel, placed in a forced air oven capable of 150 ℃ reaction 12h, slowly cooled to room temperature, centrifuged at 11,000 rpm to obtain a precipitate, DMF washing 3 times, washed three times with ethanol, and dried is placed within 24h 60 deg.] C vacuum oven to obtain CoZn-MOF-5 nanoparticles.
[0033] figure 1 Present scanning electron micrographs (SEM) of the product of Example obtained, it can be seen from the figure, to obtain a uniform spherical nanoparticles with dimensions of 60 140nm ~, figure 2 Transmission electron microsco...
Embodiment 2
[0035] Weigh 100mg 1.94mg terephthalic acid and polyvinylpyrrolidone dissolved in 6.4mL volume ratio of 3: a mixed solution of DMF and ethanol 2, sonicated for 10 minutes to dissolve all the solids, placed on a magnetic stirring on stirring for 10 minutes, a mixed after adding zinc nitrate hexahydrate and cobalt nitrate hexahydrate of 12.76mg 10.22mg, and stirred for 20 minutes, transferred to a 13mL teflon reaction vessel, the reaction oven at 120 deg.] C for 20 h, cooled slowly to at room temperature, the product was collected and centrifuged 11000rpm, DMF washing 3 times, washed three times with ethanol, and dried is placed within 24h 100 deg.] C vacuum oven to obtain CoZn-MOF-5 nanoparticles, and still maintain a small size.
Embodiment 3
[0037] Weigh 150mg 2.59mg terephthalic acid and polyvinylpyrrolidone dissolved in 6.4mL volume ratio of 7: 3 mixture of DMF and a solution of anhydrous ethanol, sonicated for 15 minutes to dissolve all the solids, placed on a magnetic stirring was stirred for 15 minutes, a mixed after adding zinc nitrate hexahydrate and cobalt nitrate hexahydrate of 10.44mg 12.48mg, and stirred for 15 minutes, transferred to a 13mL teflon reaction vessel, the reaction oven at 130 ℃ 15H, cooled slowly to at room temperature, the product was collected and centrifuged 11000rpm, DMF washing 3 times, washed three times with ethanol, the 150 deg.] C in a dry 20h vacuum oven to obtain CoZn-MOF-5 nanoparticles, and still maintain a small size.
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