Preparation method of ordered mesoporous carbon nanofibers
A nano-carbon fiber and orderly technology, applied in the field of nano-porous carbon fiber preparation, to achieve the effects of high mesoporosity, high carbon yield, and good chemical stability
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Embodiment 1
[0030] A method for preparing ordered mesoporous carbon nanofibers, comprising the following steps:
[0031] (1) Preparation of ethanol solution of phenolic resin / polyvinylpyrrolidone / triblock copolymer / inorganic salt
[0032] First dissolve the block copolymer F127 in absolute ethanol, and stir at -10°C to obtain a homogeneous solution. After 10 minutes, magnesium nitrate was added, and the mass ratio of inorganic salt to phenolic resin was 1:2. Continue stirring until completely dissolved. Then add phenolic resin ethanol solution (average molecular weight is 500), the ratio of phenolic resin and block copolymer is 1:2. Stirring was continued for 2h. Finally, polyvinylpyrrolidone was added, and the mass fraction of polyvinylpyrrolidone was 3%. After stirring for 10 h, a homogeneous solution was obtained. The mixed solution was subjected to defoaming treatment, and then sealed and stood at room temperature for 1 day to obtain a spinning solution.
[0033] (2) Preparation...
Embodiment 2
[0041] A method for preparing ordered mesoporous carbon nanofibers, comprising the following steps:
[0042] (1) Preparation of ethanol solution of phenolic resin / polyvinylpyrrolidone / triblock copolymer / inorganic salt
[0043] First dissolve the block copolymer P123 in absolute ethanol and stir at 45°C to obtain a homogeneous solution. After 10 minutes, ferric chloride was added, and the mass ratio of inorganic salt to phenolic resin was 2:1. Continue stirring until completely dissolved. Then add phenolic resin ethanol solution (average molecular weight is 1000), the ratio of phenolic resin and block copolymer is 2:3. Stirring was continued for 3h. Finally, polyvinylpyrrolidone was added, and the mass fraction of polyvinylpyrrolidone was 4%. After stirring for 13h, a homogeneous solution was obtained. The mixed solution was subjected to defoaming treatment, and then sealed and stood at room temperature for 1.5 days to obtain a spinning solution.
[0044] (2) Preparation ...
Embodiment 3
[0052] A method for preparing ordered mesoporous carbon nanofibers, comprising the following steps:
[0053] (1) Preparation of ethanol solution of phenolic resin / polyvinylpyrrolidone / triblock copolymer / inorganic salt.
[0054] First dissolve the block copolymer F127 in absolute ethanol, and stir at 50°C to obtain a uniform solution. After 10 minutes, add magnesium chloride, and the mass ratio of inorganic salt to phenolic resin is 3:1. Continue stirring until completely dissolved. Then add phenolic resin ethanol solution (average molecular weight is 1500), the ratio of phenolic resin and block copolymer is 1:2. Stirring was continued for 4h. Finally, polyvinylpyrrolidone was added, and the mass fraction of polyvinylpyrrolidone was 5%. After stirring for 16h, a homogeneous solution was obtained. The mixed solution was subjected to defoaming treatment, and then sealed and allowed to stand at room temperature for (2) days to obtain a spinning solution.
[0055] (2) Preparat...
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