Prussian blue analogue nano framework material as well as preparation method and application thereof

A technology of Prussian blue and frame materials, applied in the direction of separation methods, chemical instruments and methods, chemical/physical processes, etc., to achieve high selectivity and photocatalytic efficiency, simple and easy access to equipment, and the effect of photocatalytic reduction with high efficiency and high activity

Active Publication Date: 2021-09-17
FUZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the open three-dimensional structure holds great promise in this regard, the synthesis of PBA nanoframes, their combination with specific metals, and the regulation of unique internal structures are still a great challenge.

Method used

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  • Prussian blue analogue nano framework material as well as preparation method and application thereof
  • Prussian blue analogue nano framework material as well as preparation method and application thereof
  • Prussian blue analogue nano framework material as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0054] Preparation of Co / Fe PBAs nanoframe material:

[0055] (1) Weigh 0.106 g of iron sulfate Fe with an electronic balance 2 (SO4) 3 and 0.270 g manganese sulfate monohydrate MnSO 4 ·H 2 0, 1.5 g polyvinylpyrrolidone PVP, measure 100 ml ethanol, 100 ml deionized water with graduated cylinder, mix the three;

[0056] (2) Then the mixture was stirred under magnetic stirring for 10 minutes, and ultrasonicated for 5 minutes to obtain a uniform mixed solution A;

[0057] (3) Weigh 6.585 g of potassium ferricyanide K with an electronic balance 3 Fe(CN) 6 , Measure 100 ml of deionized water with a graduated cylinder, and mix to form a uniform mixed solution B;

[0058] (4) The mixed solution B was added to the mixed solution A, stirred magnetically for 30 min, centrifuged to obtain a precipitate, washed twice with ethanol and deionized water twice, and freeze-dried for 6 h to obtain Mn / Fe PBAs nanocomposites.

[0059] (5) Weigh 20 mg of Mn / Fe PBAs nanocomposite material wit...

Embodiment 2

[0063] Preparation of Ni / Fe PBAs nanoframe material:

[0064] (1) Weigh 0.106 g of iron sulfate Fe with an electronic balance 2 (SO4) 3 and 0.270 g manganese sulfate monohydrate MnSO 4 ·H 2 0, 1.5 g polyvinylpyrrolidone PVP, measure 100 ml ethanol, 100 ml deionized water with graduated cylinder, mix the three;

[0065] (2) Then the mixture was stirred under magnetic stirring for 10 minutes, and ultrasonicated for 5 minutes to obtain a uniform mixed solution A;

[0066] (3) Weigh 6.585 g of potassium ferricyanide K with an electronic balance 3 Fe(CN) 6 , Measure 100 ml of deionized water with a graduated cylinder, and mix to form a uniform mixed solution B;

[0067] (4) The mixed solution B was added to the mixed solution A, stirred magnetically for 30 min, centrifuged to obtain a precipitate, washed twice with ethanol and deionized water twice, and freeze-dried for 6 h to obtain Mn / Fe PBAs nanocomposites.

[0068] (5) Weigh 20 mg of Mn / Fe PBAs nanocomposite material wit...

Embodiment 3

[0072] Preparation of Cu / Fe PBAs nanoframe material:

[0073] (1) Weigh 0.106 g of iron sulfate Fe with an electronic balance 2 (SO4) 3 and 0.270 g manganese sulfate monohydrate MnSO 4 1H 2 0, 1.5 g polyvinylpyrrolidone PVP, measure 100 ml ethanol, 100 ml deionized water with graduated cylinder, mix the three;

[0074] (2) Then the mixture was stirred under magnetic stirring for 10 minutes, and ultrasonicated for 5 minutes to obtain a uniform mixed solution A;

[0075] (3) Weigh 6.585 g of potassium ferricyanide K with an electronic balance 3 Fe(CN) 6 , Measure 100 ml of deionized water with a graduated cylinder, and mix to form a uniform mixed solution B;

[0076] (4) The mixed solution B was added to the mixed solution A, stirred magnetically for 30 min, centrifuged to obtain a precipitate, washed twice with ethanol and deionized water twice, and freeze-dried for 6 h to obtain Mn / Fe PBAs nanocomposites.

[0077] (5) Weigh 20 mg of Mn / Fe PBAs nanocomposite material wit...

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Abstract

The invention discloses a Prussian blue analogue nano framework material as well as a preparation method and application thereof, and belongs to the technical field of materials. Ferric sulfate, manganese sulfate monohydrate and potassium ferricyanide are used for synthesizing a ferromanganese Prussian blue precursor, the precursor is dispersed with water, a cobalt chloride hexahydrate solution is added, ion exchange, centrifugation, washing and freeze drying are carried out, then the ferrocobalt Prussian blue nano frame material is obtained, and under the mild condition, high-activity photocatalytic reduction of carbon dioxide into carbon monoxide can be achieved. The ferrocobalt Prussian blue nano frame material is prepared by a redissolution-recrystallization method, and can be popularized to salts of nickel, copper and the like. The method has the characteristics of simplicity in operation, short preparation period, high economic benefit, strong universality and applicability, suitability for large-scale production and the like, has remarkable economic benefit and environmental benefit, and is beneficial to popularization and application.

Description

technical field [0001] The invention belongs to the technical field of materials, and in particular relates to a highly active reducing CO 2 Preparation method and application of Prussian blue analogue nanoframe material. Background technique [0002] In recent years, metal-organic frameworks (MOFs) have been widely studied due to their advantages of various types, many pores, good catalytic performance and adjustable structure. In addition, due to its open three-dimensional structure, it has great application potential in photocatalytic systems. The method based on redissolution-recrystallization has opened up new methods and ideas for the preparation of new functionalized metal-organic frameworks (MOFs). [0003] In the past, few studies have focused on using MOFs to construct nanoframes. The main reason is that it is difficult to find suitable MOFs templates to selectively remove the sides of MOFs. When Prussian blue is used as a template, new functional nanomaterials ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G83/00B01D53/86B01D53/52B01J31/22
CPCC08G83/008B01D53/8671B01J31/1691B01J35/004B01D2255/802B01D2257/504B01J2523/17B01J2523/842B01J2523/845B01J2523/847
Inventor 于岩周林鑫温永霖张元鸣庄赞勇
Owner FUZHOU UNIV
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