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Method for manufacturing nanoflower film based on manganese cobalt oxide hierarchy structure

A graded structure, manganese cobalt oxide technology, applied in liquid chemical plating, metal material coating process, coating and other directions, can solve the problems of difficult three-dimensional materials, affecting the performance of synthetic materials, and difficult to remove templates, which is easy to batch. Production, strong practicability, mild and controllable experimental conditions

Inactive Publication Date: 2016-03-09
JIANGSU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] However, most of the traditional methods for synthesizing three-dimensional materials require various templates, and these templates are generally difficult to remove, which will seriously affect the performance of the synthesized materials; therefore, it is very important to develop simple and template-free methods to synthesize three-dimensional nanomaterials. However, it is still a big challenge to develop simple and reliable preparation of three-dimensional materials with specific composition and controllable morphology.

Method used

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  • Method for manufacturing nanoflower film based on manganese cobalt oxide hierarchy structure
  • Method for manufacturing nanoflower film based on manganese cobalt oxide hierarchy structure

Examples

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Effect test

example 1

[0030] Add 2mmol of cobalt chloride, 1mmol of manganese chloride, 4mmol of hexamethylenetetramine, and 2mmol of ammonium fluoride powder into 80ml of distilled water, put it in a 100ml beaker, put it into an ultrasonic instrument for 5 minutes, and use a magnetic stirrer Stir for 30 minutes to combine well.

[0031] Pour the above solution into a 100ml polytetrafluoroethylene-lined reaction kettle, take out a piece of activated nickel foam and add it to the above reaction kettle, seal it, place it in an oven, control the temperature of the oven to 100°C, and react for 12 hours , cooled to room temperature, washed and dried in vacuum to obtain the manganese cobaltate precursor.

[0032] The manganese cobaltate precursor grown on the surface of nickel foam was put into a tube furnace for calcination at 500°C, the heating rate was 1 degree per minute, and the temperature was kept for 2 hours to obtain a manganese cobaltate hierarchical structure nanoflower film.

[0033] figure...

Embodiment 2

[0036] Add 2mmol of cobalt chloride, 1mmol of manganese chloride, 6mmol of hexamethylenetetramine, and 5mmol of ammonium fluoride powder into 80ml of distilled water, put it in a 100ml beaker, put it into an ultrasonic instrument for 5 minutes, and use a magnetic stirrer Stir for 30 minutes to combine well.

[0037] Pour the above solution into a reaction kettle with a PTFE substrate of 100 milliliters, take out a piece of activated nickel foam and add it to the above reaction kettle, seal it, place it in an oven, control the temperature of the oven to 120°C, and react for 10 hours, cooled to room temperature, washed, and vacuum-dried to obtain the manganese cobaltate precursor.

[0038] The manganese cobaltate precursor grown on the surface of nickel foam was put into a tube furnace for calcination at 400°C, the heating rate was 2 degrees per minute, and the temperature was kept for 6 hours to obtain a manganese cobaltate hierarchical structure nanoflower film.

[0039] The ...

Embodiment 3

[0041] Add 2mmol of cobalt chloride, 1mmol of manganese chloride, 10mmol of hexamethylenetetramine, and 5mmol of ammonium fluoride powder into 80ml of distilled water, put it in a 100ml beaker, put it into an ultrasonic instrument for 5 minutes, and use a magnetic stirrer Stir for 30 minutes to combine well.

[0042] Pour the above solution into a 100ml polytetrafluoroethylene-lined reaction kettle, take out a piece of activated nickel foam and add it to the above reaction kettle, seal it, place it in an oven, control the temperature of the oven to 150°C, and react for 8 hours , cooled to room temperature, washed and dried in vacuum to obtain the manganese cobaltate precursor.

[0043] The manganese cobaltate precursor grown on the surface of nickel foam was put into a tube furnace for calcination at 300°C, the heating rate was 5 degrees per minute, and the temperature was kept for 9 hours to obtain a manganese cobaltate hierarchical structure nanoflower film.

[0044] The X-...

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Abstract

The invention relates to transition metal oxides, in particular to a method for manufacturing a nanoflower film based on a manganese cobalt oxide hierarchy structure. A water heating and high-temperature calcination synthetic method is adopted, a layer of a nanoflower film material composed of nanobands grows in situ on the surface of a foamed nickel sheet at the low temperature through a water heating method, the nanoflower film material is further calcinated, and therefore the metallic oxide film material of the nanoflower structure is obtained. By the adoption of the method, hexamine is used as an externally-added alkali source, the thickness and the size of nanoflowers can be adjusted and controlled, and the metallic hydroxide nanoflower film material is obtained; and through further calcination, the metallic oxide nanoflower film material which is regular in appearance and stable in structure and is of the hierarchy structure are obtained finally. By the adoption of the method, the experiment conditions are gentle and controllable, practicality is high and reproducibility is good.

Description

technical field [0001] The invention relates to transition metal oxides, in particular to a method for preparing nanoflower thin films based on manganese cobaltate hierarchical structure. Background technique [0002] The control of the structure and morphology of inorganic nanomaterials has always been the focus of scientists. In recent years, there have been many research reports on transition metal oxide materials, especially metal oxides of cobaltate and manganate, especially in photoelectrocatalysis. , biosensing, microelectronic devices, supercapacitors, lithium-ion batteries and other fields have shown great application prospects; manganese cobalt oxide is widely used in the fields of catalysis, oxygen reduction, sensors and supercapacitors. Manganese nanomaterials have been synthesized, including nanowires, nanospheres, and nanosheets. The reported synthesis methods include direct synthesis method, microemulsion method, sol-gel method and so on. [0003] However, m...

Claims

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Application Information

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IPC IPC(8): C23C18/16
CPCC23C18/1644C23C18/1646
Inventor 赵岩袁寿其李华明许晖徐远国包健
Owner JIANGSU UNIV
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