Heterogeneous cobalt metal-organic framework and its preparation and application in the field of wastewater treatment
An organic framework and wastewater treatment technology, applied in water pollution control, heterogeneous cobalt metal-organic framework and its preparation and in the field of wastewater treatment, can solve the problems that cobalt ions cannot be recycled and utilized, increase ion exchange, increase treatment costs, etc. , to achieve the effect of easy recycling, less dosage and short reaction time
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Embodiment 1
[0046] Example 1 Heterogeneous cobalt metal-organic framework material is synthetically prepared
[0047] (1) Preparation of precursor solution: 1.45g Co(NO 3 ) 2 ·6H 2 O and 1.05g 1,3,5-benzenetricarboxylic acid were dissolved in 25.0mL deionized water, then 2.0mL triethylamine was added, and the above mixed solution was stirred until completely dissolved to obtain a precursor solution;
[0048] (2) Preparation of heterogeneous cobalt metal-organic framework material: the precursor solution prepared in step (1) was transferred to a 100mL polytetrafluoroethylene-lined autoclave, and the autoclave was placed in a programmed oven. Hydrothermal reaction at 190°C for 24 hours; cooling, naturally cooling to room temperature, vacuum pump filtration, repeated washing with absolute ethanol and deionized water to obtain a purple-red precipitate; put the precipitate in a vacuum drying oven at 60°C for 24 hours to obtain purple-red The solid powder is the heterogeneous cobalt metal-or...
Embodiment 2
[0050] Example 2 The heterogeneous cobalt metal-organic framework material is synthesized
[0051] (1) Preparation of precursor solution: 1.45g Co(NO 3 ) 2 ·6H 2 O and 1.05g 1,3,5-benzenetricarboxylic acid were dissolved in 25.0mL deionized water, then 2.0mL triethylamine was added, and the above mixed solution was stirred until completely dissolved to obtain a precursor solution;
[0052] (2) Preparation of heterogeneous cobalt metal-organic framework material: the precursor solution prepared in step (1) was transferred to a 100mL polytetrafluoroethylene-lined autoclave, and the autoclave was placed in a programmed oven. Hydrothermal reaction at 130°C for 48 hours; cooling, naturally cooling to room temperature, vacuum pump filtration, repeated washing with absolute ethanol and deionized water to obtain a purple-red precipitate; put the precipitate in a vacuum drying oven at 100°C for 12 hours to obtain purple-red The solid powder is the heterogeneous cobalt metal-organic ...
Embodiment 3
[0053] Example 3 Heterogeneous cobalt metal-organic framework material is synthetically prepared
[0054] (1) Preparation of precursor solution: 0.725g Co(NO 3 ) 2 ·6H 2 O and 0.525g of 1,3,5-benzenetricarboxylic acid were dissolved in 12.5mL of deionized water, then 1.0mL of triethylamine was added, and the mixture was stirred until completely dissolved to obtain a precursor solution;
[0055] (2) Preparation of heterogeneous cobalt metal-organic framework material: transfer the precursor solution prepared in step (1) to a 50mL polytetrafluoroethylene-lined autoclave, put the autoclave into a programmed oven, Hydrothermal reaction at 160°C for 36 hours; cooling, naturally cooling to room temperature, vacuum pump filtration, repeated washing with absolute ethanol and deionized water to obtain a purple-red precipitate; put the precipitate in a vacuum drying oven at 80°C for 18 hours to obtain purple-red The solid powder is the heterogeneous cobalt metal-organic framework mat...
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