Method used for preparing hydroxy manganese oxide superfine single crystal nanometer line

A manganese oxyhydroxide, single-crystal nanotechnology, applied in chemical instruments and methods, nanotechnology, inorganic chemistry, etc., can solve the problems of small specific surface area, large material size, rare, etc., and achieve stable product quality and low cost. , the effect of good process repeatability

Inactive Publication Date: 2012-07-04
西安迈克森新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

At present, reports on the synthesis of manganese oxyhydroxide nanomaterials have nanorods and multi-branched nanoflower structures, but the size of the materials obtained by these methods is large, and the specific surface area of ​​this large-size material is small, which is not conducive to giving full play to this type of material. advantages, and this direct one-step method to obtain ultra-fine nanowires (diameter <10nm) is still rare

Method used

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  • Method used for preparing hydroxy manganese oxide superfine single crystal nanometer line
  • Method used for preparing hydroxy manganese oxide superfine single crystal nanometer line
  • Method used for preparing hydroxy manganese oxide superfine single crystal nanometer line

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Experimental program
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Effect test

Embodiment 1

[0019] Put 0.2 g of analytically pure potassium permanganate and 0.5 g of polyvinylpyrrolidone (K30) into a 40 ml polytetrafluoroethylene hydrothermal reaction kettle, add 80% of the reactor volume of deionized water, and stir to form a uniform solution. Seal the reaction kettle and react at 150°C for 10 hours. Then cool to room temperature, open the reaction kettle, vacuum filter, wash with deionized water and absolute ethanol, and dry to obtain a brown powder. The product is identified as manganese oxyhydroxide through X-ray powder diffraction, and the powder X-ray diffraction results are as follows: figure 1 As shown, the material morphology is obtained by transmission electron microscopy results, such as figure 2 , as shown in 3, the diameter distribution of the manganese oxyhydroxide ultrafine nanowires thus obtained is between 4-10 nm, and the length is between 200 nm and 5 μm.

Embodiment 2

[0021] Put 0.2 gram of analytically pure potassium permanganate and 0.1 gram of polyvinylpyrrolidone (K50) in a 40 ml polytetrafluoroethylene hydrothermal reaction kettle, add 80% of reactor volume deionized water, and stir to form a uniform solution. Seal the reaction kettle and react at 120°C for 30 hours. Then cool to room temperature, open the reaction kettle, vacuum filter, wash with deionized water and absolute ethanol, and dry to obtain a brown powder. The obtained product is identified by X-ray powder diffraction and transmission electron microscopy, and is manganese oxyhydroxide ultrafine nanowire.

Embodiment 3

[0023] Put 0.2 g of analytically pure potassium permanganate and 0.7 g of polyvinylpyrrolidone (K50) into a 40 ml polytetrafluoroethylene hydrothermal reaction kettle, add 80% of the reactor volume deionized water, and stir to form a uniform solution. Seal the reaction vessel and react at 170°C for 5 hours. Then cool to room temperature, open the reaction kettle, vacuum filter, wash with deionized water and absolute ethanol, and dry to obtain a brown powder. The obtained product is identified by X-ray powder diffraction and transmission electron microscopy, and is manganese oxyhydroxide ultrafine nanowire.

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Abstract

The invention relates to a method of a compound MnOOH superfine single crystal nanometer line. In the method, potassium permanganate is utilized as a raw material, and organic molecules such as polyvinyl pyrrolidone (K30,K50 and the like), lauryl sodium sulfate and the like are utilized as reducers; and a hydrothermal reaction is carried out at the temperature of 120-170 DEG C in a closeness reactor, thereby preparing large quantity of MnOOH superfine single crystal nanometer lines the diameters of which are about 10 nm and have different length diameter proportions. The raw material related in the method is cheap and easy to get, the cost is low, the compound process is simple and easy to realize, the product quality is stable and process repetitive property is good; and the nanometer line manufactured by the invention can further process so as to obtain a more comprehensive manganese oxide material, thereby being used for the fundamental research and technology utilization of related fields such as lithium ion batteries and the like.

Description

technical field [0001] The invention relates to a method for preparing monodisperse one-dimensional nanometer materials, in particular to a liquid phase synthesis method of manganese oxyhydroxide (MnOOH) ultrafine single crystal nanowires. Background technique [0002] Manganese hydroxides have very important uses in the fields of electrochemistry, batteries, and electrochromism. Manganese oxyhydroxide can also be used as Li-Mn-O spinel structure and MnO 2 And other precursors of manganese oxides, and manganese oxides have very superior performance in secondary batteries, molecular sieves and catalysis, and have been widely concerned by the scientific and industrial circles. At present, reports on the synthesis of manganese oxyhydroxide nanomaterials have nanorods and multi-branched nanoflower structures, but the size of the materials obtained by these methods is large, and the specific surface area of ​​this large-size material is small, which is not conducive to giving fu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01G45/00B82Y40/00
Inventor 李小剑赵一周成钢
Owner 西安迈克森新材料有限公司
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