Flexible self-supporting Co-embedded N-doped three-dimensional porous carbon-based material as well as preparation method and application thereof
A three-dimensional porous, carbon-based material technology, applied in the field of electrocatalysis, can solve the problems of less pores, poor mass transfer effect, and inability to realize flexible self-support, and achieve the effect of high specific surface area and rich pore structure
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Embodiment 1
[0043] (1) Dissolve 1 g of polyacrylonitrile with a weight average molecular weight of 200,000 in 5 mL of N,N-dimethylformamide (DMF), and 2 g of ZnO in 5 mL of N,N-dimethylformamide (DMF) , the two were stirred and mixed for 24 hours to obtain a spinning solution, and electrospinning was performed on the spinning solution to obtain a ZnO / PAN fiber membrane;
[0044] Among them, during electrospinning, the positive pressure is 16KV, the negative pressure is 1KV; the injection speed is 0.18mm / min; the receiving distance between the needle and the drum is 16cm;
[0045] (2) Cut the ZnO / PAN fiber membrane into 3 pieces with a size of 1cm×2cm×0.05cm, each with a mass of 0.05g, immerse it in 15mL of 2-methylimidazole solution containing 0.5g for 10min, and then add the 0.1115g of Zn(NO 3 ) 2 and 0.1091g of Co(NO 3 ) 2 The mixed solution of metal salts formed by dissolving in 15 mL of deionized water was stirred for 40 min. After the reaction, washed with deionized water and fre...
Embodiment 2
[0052] (1) Dissolve 2 g of ZnO and 1 g of polyacrylonitrile with a weight average molecular weight of 200,000 in 10 mL of N,N-dimethylformamide (DMF), and stir and mix for 24 hours to obtain a spinning solution. Carry out electrospinning to obtain ZnO / PAN fiber membrane;
[0053] Among them, during electrospinning, the positive pressure is 16KV, the negative pressure is 1KV; the injection speed is 0.18mm / min; the receiving distance between the needle and the drum is 16cm;
[0054] (2) Cut the ZnO / PAN fiber membrane into 3 pieces with a size of 1cm×2cm×0.05cm, each with a mass of 0.05g, immerse it in 15mL of 2-methylimidazole solution containing 0.5g for 10min, and then add the 0.1487g of Zn(NO 3 ) 2 and 0.0727g of Co(NO 3 ) 2 The mixed solution formed by dissolving in 15 mL of deionized water was stirred and reacted for 40 min. After the reaction, washed with deionized water and freeze-dried for 5 h to obtain CoZnZIF@ZnO / PAN;
[0055] (3) Put the melamine and CoZnZIF@ZnO / ...
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