Unlock instant, AI-driven research and patent intelligence for your innovation.

A preparation method of micro-motor catalyst based on metal-organic framework material

A metal-organic framework and micro-motor technology, applied in the direction of organic compound/hydride/coordination complex catalysts, chemical instruments and methods, physical/chemical process catalysts, etc., can solve the problem of narrow pH application range and hydrogen peroxide utilization rate Low cost, difficulty in handling iron ions, etc., to achieve the effects of environmental friendliness, easy molding, and low cost

Active Publication Date: 2018-02-09
UNIV OF JINAN
View PDF5 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method uses Fe 2+ React with hydrogen peroxide to form highly active hydroxyl radicals to oxidize and degrade organic matter in water, but there are disadvantages such as low utilization rate of hydrogen peroxide, narrow pH application range (2-4), and difficulty in subsequent treatment of iron ions.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] (1) Preparation of self-driven Ag-polymer@ZIF(Zn, Fe) micromotor

[0020] Disperse 0.03 g polystyrene microspheres in 4 mL methanol, add 0.5008 g Zn(NO 3 ) 2 ·6H 2 O and 0.0936 g FeSO 4 ·7H 2 O, mix evenly, then add 4 mL of methanol solution containing 2.02 mmol dimethylimidazole to the above mixture, react at 70 °C for 10 min, centrifuge, wash with methanol, and dry in vacuum at 60 °C to obtain polymer@ ZIF(Zn, Fe) microspheres.

[0021] The polymer@ZIF(Zn, Fe) microspheres were first transferred to the thermal release tape, and then 6% ammonia water was added dropwise to 20 mL of AgNO with a molar concentration of 100 mmol / L. 3 solution, until the precipitate just disappeared, that is, the silver ammonia solution was prepared, and the thermal release tape adhered to the polymer@ZIF(Zn, Fe) microspheres was immersed in the silver ammonia solution, and then 0.4 mL of silver ammonia solution was added dropwise Formaldehyde solution with a concentration of 2.0% by m...

Embodiment 2

[0026] (1) Preparation of self-driven Ag-polymer@ZIF(Zn, Fe) micromotor

[0027] Disperse 0.03 g of polyacrylamide microspheres in 4 mL of methanol, add 1.002 g of Zn(NO 3 ) 2 ·6H 2 O and 0.0936 g FeSO 4 ·7H 2 O, mix well, then add 4 mL of methanol solution containing 3.72 mmol dimethylimidazole to the above mixture, react at 70 °C for 10 min, centrifuge, wash with methanol, and dry in vacuum at 60 °C to obtain polymer@ ZIF(Zn, Fe) microspheres.

[0028] The polymer@ZIF(Zn, Fe) microspheres were first transferred to the thermal release tape, and then 6% ammonia water was added dropwise to 20 mL of AgNO with a molar concentration of 100 mmol / L. 3solution, until the precipitate just disappeared, that is, the silver ammonia solution was prepared, and the thermal release tape adhered to the polymer@ZIF(Zn, Fe) microspheres was immersed in the silver ammonia solution, and then 0.4 mL of silver ammonia solution was added dropwise Formaldehyde solution with a concentration of 2...

Embodiment 3

[0033] (1) Preparation of self-driven Ag-polymer@ZIF(Zn, Fe) micromotor

[0034] Disperse 0.03 g of polyvinyl alcohol microspheres in 4 mL of methanol, add 0.2504 g of Zn(NO 3 ) 2 ·6H 2 O and 0.2340 g FeSO 4 ·7H 2 O, mix evenly, then add 4 mL of methanol solution containing 1.69 mmol dimethylimidazole to the above mixture, react at 70 °C for 10 min, centrifuge, wash with methanol, and dry in vacuum at 60 °C to obtain polymer@ ZIF(Zn, Fe) microspheres.

[0035] The polymer@ZIF(Zn, Fe) microspheres were first transferred to the thermal release tape, and then 6% ammonia water was added dropwise to 20 mL of AgNO with a molar concentration of 100 mmol / L. 3 solution, until the precipitate just disappeared, that is, the silver ammonia solution was prepared, and the thermal release tape adhered to the polymer@ZIF(Zn, Fe) microspheres was immersed in the silver ammonia solution, and then 0.4 mL of silver ammonia solution was added dropwise Formaldehyde solution with a concentrati...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses a method for preparing a micro-motor catalyst based on a metal organic framework material. First, a certain amount of polymer microspheres is dispersed in a solvent, and the surface is coated with a zeolite-like imidazolate framework material (ZIF(Zn,Fe)), and then silver-plated on one side of the surface to prepare a self-driven Ag‑ polymer@ZIF(Zn,Fe) micro motor. The self-driven micro-motor catalyst has high catalytic activity, high organic pollutant removal efficiency, environmental friendliness, easy recovery and reusability, and the method has simple equipment and convenient operation, and has great application prospects.

Description

technical field [0001] The invention belongs to the technical field of micro-nano devices, and in particular relates to a method for preparing a micro-motor catalyst based on a metal-organic framework material. Background technique [0002] The environmental impact of biodegradable organic wastewater has attracted great attention, and these wastewaters are difficult to treat by traditional biological and physicochemical methods. Advanced oxidation technology is an efficient biodegradable organic wastewater treatment technology, of which the Fenton reagent method is the most widely used. This method uses Fe 2+ React with hydrogen peroxide to form highly active hydroxyl radicals to oxidize and degrade organic matter in water, but there are disadvantages such as low utilization rate of hydrogen peroxide, narrow pH application range (2-4), and difficulty in subsequent treatment of iron ions. In order to overcome the shortcomings of the homogeneous Fenton reaction, a lot of res...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): B01J31/22C02F1/72
CPCB01J31/069B01J31/1691C02F1/722C02F2305/023C02F2305/026
Inventor 王瑞芹国伟林张梦杰李祥惠岳馨馨
Owner UNIV OF JINAN