Preparation method and application of environment-friendly core shell one-dimensional nanometer copper wire-organic metallic framework ZIF-8 composite catalyst

A ZIF-8, environment-friendly technology, applied in the direction of organic compound/hydride/coordination complex catalysts, chemical instruments and methods, physical/chemical process catalysts, etc., can solve the problems of slow kinetics, etc., to achieve Good activity, convenient operation, good activity effect

Inactive Publication Date: 2014-08-27
SHANGHAI NORMAL UNIVERSITY
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

After that, many researchers studied ammonia borane from the aspects of synthesis, thermal analysis, etc., but ammonia bo

Method used

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  • Preparation method and application of environment-friendly core shell one-dimensional nanometer copper wire-organic metallic framework ZIF-8 composite catalyst
  • Preparation method and application of environment-friendly core shell one-dimensional nanometer copper wire-organic metallic framework ZIF-8 composite catalyst
  • Preparation method and application of environment-friendly core shell one-dimensional nanometer copper wire-organic metallic framework ZIF-8 composite catalyst

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Ultrasonically disperse 0.01g ultra-long nano-copper wire in water, add 0.1g zinc nitrate hexahydrate, 0.3642g polyvinylpyrrolidone as a capture agent and 18ml organic solvent N, N-dimethylformamide, stir well, and ultrasonically When the zinc source is dissolved, add 0.06 g of organic ligand 2-methylimidazole, place it in a microwave reactor, heat up for 10 minutes, microwave power is 1200w, initial pressure is 35 bar, reaction temperature is 120°C, and reaction time is 1 minute. After cooling to room temperature, washing to neutrality, centrifugation and vacuum drying, the nanometer copper wire-metal organic framework ZIF-8 composite catalyst is obtained.

[0026] figure 1 It is the XRD spectrum of the nano-copper wire-organometallic framework ZIF-8 composite catalyst prepared in Example 1, and each diffraction peak in the figure corresponds to the peak of the nano-copper wire and the organometallic framework ZIF-8, indicating that there is Two components of nano cop...

Embodiment 2

[0031] Example 2, 3, 4

[0032] The only difference with Example 1 is that the amount of nano-copper wire used is different. Embodiment 2, 3, and 4 are respectively 0.001g, 0.05g, and 0.02g. The resulting product has the same phase composition and slightly different microscopic appearance. With the increase of nano-copper wires, the dispersion of the one-dimensional structure of organometallic framework ZIF-8 is higher, and the dispersion and crystallinity of 0.01g are the best.

Embodiment 5

[0033] Example 5, 6, 7, 8

[0034] The only difference from Example 1 is that the zinc source used is different. Embodiments 5, 6, 7, and 8 are respectively zinc oxide, zinc chloride, zinc sulfate heptahydrate, zinc acetate dihydrate, and the phase composition of the resulting product is similar. The structure is slightly different, and the sample with zinc nitrate hexahydrate as the zinc source has the best dispersion, crystallinity and catalytic activity.

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Abstract

The invention discloses an environment-friendly core shell one-dimensional nanometer copper wire-organic metallic framework ZIF-8 composite catalyst and a preparation method and application of the environment-friendly core shell one-dimensional nanometer copper wire-organic metallic framework ZIF-8 composite catalyst. A microwave induction coring heating synthesis method is adopted, N, N-dimethylformamide is used as a solvent, polyvinylpyrrolidone is used as a trapping agent, a copper wire is used as a one-dimensional structure loading carrier, the environment-friendly core shell one-dimensional nanometer copper wire-organic metallic framework ZIF-8 composite catalyst is synthesized fast, the decomposition rate of the catalyst on ammonia borane in an ammonia borane decomposition catalytic reaction is 71 percent, and the good catalytic activity is shown. The preparation method of the catalyst is simple, and environmental pollution is small. An organic metallic framework ZIF-8 is combined with a non-precious metal copper nanometer wire with the good conductivity and certain catalytic performance, and the catalytic performance of the material of this kind is greatly improved. The material is potentially applied to energy storage, pollution gas absorption, sewage treatment, new energy development and other fields.

Description

technical field [0001] The invention relates to the technical field of photocatalysts, in particular to an environment-friendly core-shell one-dimensional nanostructure nano copper wire-organometallic framework ZIF-8 composite catalyst and its preparation method and application. Background technique [0002] The energy problem is one of the important challenges facing the world at present, and solving this problem is of great significance for my country to implement sustainable development, ensure national security, and build a harmonious society. China has become the world's second largest energy consumer, and will likely surpass the United States to become the world's largest energy consumer in the future. China's per capita energy resources are very low. The per capita possession of coal and hydropower resources is only 50% of the world's average level, and the per capita oil and natural gas resources are only about 1 / 15 of the world's average level. The occurrence of en...

Claims

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Application Information

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IPC IPC(8): B01J31/22C01B3/06
CPCY02E60/36
Inventor 张蝶青刘佩珏肖舒宁朱巍温美成李贵生李和兴
Owner SHANGHAI NORMAL UNIVERSITY
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