Method for preparing metal hydroxide multi-stage structure through MOF derivative bimetallic oxide template

A double metal oxide and hydroxide technology, applied in the field of nanomaterials, can solve problems such as dependence on surfactants, unfavorable industrialization, complex hydroxide preparation process, etc., and achieve excellent constant current stability and uniform component distribution , the effect of excellent OER performance

Active Publication Date: 2019-01-04
ZHEJIANG UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] In order to overcome the problems that the traditional multi-level hydroxide preparation process is complex, rely on surfactants, and be unfavorable for industrialization, the present invention provides a method for preparing metal hydroxide multi-level structures using MOF-derived double metal oxide templates. The method, the preparation process is simple, mild, universal and can be prepared in large quantities, does not use surfactants, and is suitable for large-scale industrial production

Method used

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  • Method for preparing metal hydroxide multi-stage structure through MOF derivative bimetallic oxide template
  • Method for preparing metal hydroxide multi-stage structure through MOF derivative bimetallic oxide template
  • Method for preparing metal hydroxide multi-stage structure through MOF derivative bimetallic oxide template

Examples

Experimental program
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Effect test

Embodiment 1

[0038] (1) Take a clean beaker, add 25ml deionized water, weigh 0.5g MoO 3 Pour it into deionized water, weigh 0.475g of 2-methylimidazole, pour it into deionized water, and ultrasonically dissolve it. Take another clean beaker, add 25ml deionized water, weigh 0.3gCo(NO 3 ) 2 ·6H 2 O was poured into deionized water, dissolved ultrasonically, and the cobalt nitrate solution was added to MoO 3 in solution. Heat the oil bath to 120°C, stir for 12 hours, and cool down to room temperature naturally after the reaction stops. Centrifugal washing with deionized water, repeated three times, and vacuum drying at 60°C for 12 hours to obtain Co / Mo-MOF;

[0039] (2) Take an appropriate amount of Co / Mo-MOF and place it in a boat-shaped crucible, place the crucible in the middle of a quartz tube, and oxidize it in a tube furnace at 500 °C for 3 hours in an air atmosphere with a heating rate of 10 °C / min to obtain CoMoO 4 -MOF crystal powder;

[0040] (3) Take 10mg CoMoO 4 Put the MOF...

Embodiment 2

[0056] (1) Take a clean beaker, add 25ml deionized water, weigh 0.5g MoO 3 Pour it into deionized water, weigh 0.475g of 2-methylimidazole, pour it into deionized water, and ultrasonically dissolve it. Take another clean beaker, add 25ml deionized water, weigh 0.3gNi(NO 3 ) 2 ·6H 2 O was poured into deionized water, ultrasonically dissolved, and nickel nitrate solution was added to MoO 3 in solution. Heat the oil bath to 80°C, stir for 18 hours, and cool down to room temperature naturally after the reaction stops. Centrifugal washing with deionized water was repeated three times. and vacuum drying at 60°C for 12 hours to obtain Ni / Mo-MOF crystal powder;

[0057] (2) Take an appropriate amount of Ni / Mo-MOF and place it in a boat-shaped crucible, place the crucible in the middle of a quartz tube, and oxidize it in a tube furnace at 900 °C for 1 h in an air atmosphere with a heating rate of 20 °C / min to obtain NiMoO 4 - MOF crystal powder;

[0058] (3) Take 10mg of NiMoO ...

Embodiment 3

[0070] Take a clean beaker, add 25ml deionized water, weigh 0.5g MoO 3 Pour it into deionized water, weigh 0.475g of 2-methylimidazole, pour it into deionized water, and ultrasonically dissolve it. Take another clean beaker, add 25ml deionized water, weigh 0.3g Co(NO 3 ) 2 ·6H 2 O was poured into deionized water, dissolved ultrasonically, and the cobalt nitrate solution was added to MoO 3 in solution. Heat the oil bath to 180°C, stir for 10 hours, and cool down to room temperature naturally after the reaction stops. Centrifugal washing with deionized water, repeated four times, and vacuum drying at 60°C for 12 hours to obtain Co / Mo-MOF;

[0071] (2) Take an appropriate amount of Co / Mo-MOF and place it in a boat-shaped crucible, place the crucible in the middle of a quartz tube, and oxidize it in a tube furnace at 300°C for 24 hours in an air atmosphere with a heating rate of 1°C / min to obtain CoMoO 4 - MOF crystal powder;

[0072] (3) Take 10mg CoMoO 4 -MOF crystal pow...

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Abstract

The invention relates to the technical field of nanometer materials, in particular to a method for preparing a metal hydroxide multi-stage structure through an MOF derivative bimetallic oxide template. Alkali treatment is conducted on the MOF derivative bimetallic oxide template to obtain the metal hydroxide multi-stage structure, M is set into metal in the metal hydroxide multi-stage structure, the MOF derivative bimetallic oxide template is set into MMoO4-MOF derivative bimetallic oxide, and the metal hydroxide multi-stage structure is M(OH)x. The method is simple, mold and universal in preparing process, has no special requirements for equipment, does not use surfactants, and can conduct large-scale industrial production; the metal hydroxide multi-stage structure prepared through the method is uniform in size, stable in structure and even in component distribution and has excellent OER performance and constant-current stability.

Description

technical field [0001] The invention relates to the technical field of nanomaterials, in particular to a method for preparing a metal hydroxide multilevel structure by using a MOF derived double metal oxide template. Background technique [0002] Hierarchical nanomaterials have attracted extensive research attention due to their excellent physical and chemical properties. Due to the high surface area, high surface-to-volume ratio, and surface functional groups provided by the nanoscale basic unit, it can provide ideal mechanical and chemical properties for the overall structure of the material. Hierarchical structures are structures formed by strict organizational principles from molecular to macroscopic scales, and multilevel structures composed at any level can produce functional materials. [0003] As an important functional material, metal hydroxide nanomaterials have been extensively studied. The controllable morphology, orientation and dimension of multi-level struct...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01G51/04C01G51/00C01G53/04C01G53/00
CPCC01G51/00C01G51/04C01G53/00C01G53/04C01P2002/72C01P2004/01C01P2004/10C01P2004/61C01P2006/40C01P2006/80
Inventor 曹澥宏刘文贤施文慧尹瑞连
Owner ZHEJIANG UNIV OF TECH
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