Organic framework derived nitrogen-carbon nano-material as well as preparation method and application thereof
A carbon nanomaterial, organic framework technology, applied in chemical instruments and methods, catalyst activation/preparation, water/sludge/sewage treatment, etc., to achieve a wide range of pH, avoid dissolution and secondary pollution problems, and good regeneration performance Effect
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Embodiment 1
[0039] A method for preparing an organic framework derived nitrogen-carbon nanomaterial, the specific steps are as follows:
[0040] (1) Preparation of precursor ZIF-8: 3.22g of Zn(NO 3 ) 2 ·6H 2 O was dissolved in 250mL methanol and stirred to form Zn(NO 3 ) 2 The solution is ready for use; 3.29g of 2-methylimidazole is dissolved in 250mL of methanol and stirred and dissolved to form a 2-methylimidazole solution for subsequent use; the 2-methylimidazole solution is slowly added to Zn(NO 3 ) 2 Stir in the solution for 5 minutes, age for 24 hours, centrifuge and wash with methanol for 3 times, and dry in an oven at 60°C for 12 hours;
[0041] (2) Preparation of organic framework-derived nitrogen-carbon nanomaterials: the ZIF-8 precursor was heated to 900°C at 2°C / min in a nitrogen atmosphere, annealed for 3h, and then the black powder was pickled with 0.5M sulfuric acid solution for 24h to remove excess The elemental zinc nanoparticles were washed 3 times with water and dri...
Embodiment 2
[0044] A preparation method and application of an organic framework derived nitrogen-carbon nanomaterial, the specific steps are as follows:
[0045] (1) Preparation of precursor ZIF-8: 5.06g of Zn(NO 3 ) 2 ·6H 2 O was dissolved in 250mL methanol and stirred to form Zn(NO 3 ) 2 The solution is ready for use; 3.29g of 2-methylimidazole is dissolved in 250mL of methanol and stirred and dissolved to form a 2-methylimidazole solution for subsequent use; the 2-methylimidazole solution is slowly added to Zn(NO 3 ) 2 Stir in the solution for 5 minutes, age for 24 hours, centrifuge and wash with methanol for 3 times, and dry in an oven at 60°C for 12 hours;
[0046] (2) Preparation of organic framework-derived nitrogen-carbon nanomaterials: the ZIF-8 precursor was heated to 900°C at 2°C / min in a nitrogen atmosphere, annealed for 3h, and then the black powder was pickled with 0.5M sulfuric acid solution for 24h to remove excess The elemental zinc nanoparticles were washed 3 times...
Embodiment 3
[0052] A preparation method and application of an organic framework-derived nitrogen-carbon nanomaterial, the specific steps are as follows:
[0053] (1) Preparation of precursor ZIF-8: 6.44g of Zn(NO 3 ) 2 ·6H 2 O was dissolved in 250mL methanol and stirred to form Zn(NO 3 ) 2 The solution is ready for use; 3.29g of 2-methylimidazole is dissolved in 250mL of methanol and stirred and dissolved to form a 2-methylimidazole solution for subsequent use; the 2-methylimidazole solution is slowly added to Zn(NO 3 ) 2 Stir in the solution for 5 minutes, age for 24 hours, centrifuge and wash with methanol for 3 times, and dry in an oven at 60°C for 12 hours;
[0054] (2) Preparation of organic framework-derived nitrogen-carbon nanomaterials: the ZIF-8 precursor was heated to 900°C at 2°C / min in a nitrogen atmosphere, annealed for 3h, and then the black powder was pickled with 0.5M sulfuric acid solution for 24h to remove excess The elemental zinc nanoparticles were washed 3 times...
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