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Preparation method of Mn3O4 self-assembly structure

A technology of self-assembly and flower-like structure, applied in nanotechnology, nanotechnology, manganese oxide/manganese hydroxide, etc. for materials and surface science, can solve the problem of incomplete theoretical foundation and preparation technology, difficult to obtain three-dimensional structure, Complicated preparation process and other issues, to achieve the effect of strong shape controllability, low production cost, and simple preparation process

Inactive Publication Date: 2015-01-07
UNIV OF JINAN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] mn 3 o 4 The research on the three-dimensional structure is still in its infancy, the theoretical basis and preparation technology are not complete, the preparation process is complicated, and the stability is poor, especially the Mn with different morphologies 3 o 4 The three-dimensional structure is not easy to obtain, and it is urgent to explore new effective synthesis methods

Method used

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  • Preparation method of Mn3O4 self-assembly structure
  • Preparation method of Mn3O4 self-assembly structure
  • Preparation method of Mn3O4 self-assembly structure

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] 1.1 Add 0.495 g of manganese chloride tetrahydrate and 1.457 g of sodium acetate to 12.5 mL of glycerol and 12.5 mL of water and stir until clear;

[0033] 1.2 Transfer the above solution to the reactor and react at 180 °C for 16 h;

[0034] 1.3 After the reaction, the product was obtained after centrifugation and washing.

[0035] The SEM picture of the product is as follows figure 1 As shown, it can be seen from the figure that the resulting product is composed of multiple Mn with similar diameter and length 3 o 4 The rods are closely arranged in the same orientation and self-assembled into an array structure, the array surface is flat, and a single Mn 3 o 4 The diameter of the rods is 0.2-0.6 μm, the length is 1.9-3.2 μm, and the area of ​​the self-assembled array structure is 40-80 μm 2 . The XRD pattern of the product is as follows figure 2 As shown, the XRD results are consistent with the standard XRD card (24-0734), proving that the crystal phase of the obt...

Embodiment 2

[0037] 2.1 Add 0.628 g of manganese nitrate tetrahydrate and 1.180 g of sodium acetate to 7 mL of butanetriol and 10 mL of water and stir until clear;

[0038] 2.2 Transfer the above solution to the reactor and react at 210 °C for 20 h;

[0039] 2.3 After the reaction, after centrifugation and washing, Mn with a diameter of 0.6-1.1 μm and a length of 9-15 μm was obtained. 3 o 4 Rod-like self-assembled array structure formed by closely connected rods, the area of ​​the self-assembled array structure is 100-150 μm 2 .

Embodiment 3

[0041] 3.1 Add 0.628 g of manganese nitrate tetrahydrate and 0.620 g of sodium acetate to 11 mL of glycerol and 15 mL of water and stir until clear;

[0042] 3.2 Transfer the above solution to the reactor and react at 170 °C for 8 h;

[0043] 3.3 After the reaction, after centrifugation and washing, Mn with a diameter of 0.09-0.22 μm and a length of 0.8-2.1 μm was obtained. 3 o 4 Rod-like self-assembled array structure formed by closely connected rods, the area of ​​the self-assembled array structure is 15-30 μm 2 .

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Abstract

The invention discloses a preparation method of a Mn3O4 self-assembly structure. The method comprises the following steps: adding bivalent manganese salt and sodium acetate to a mixture of polyhydric alcohols and water, and stirring the mixture to obtain a transparent solution; heating the transparent solution to 170-220 DEG C, and preparing the Mn3O4 self-assembly structure by adopting a solvothermal method; and centrifugally separating and washing to obtain the Mn3O4 array- or flower-shaped self-assembly structure after reaction. The Mn3O4 three-dimensional self-assembly structure is synthesized in one step by using the solvothermal method, thus the Mn3O4 self-assembly structure is simple in preparation process, cheap in raw materials, low in production cost, strong in shape controllability and good in repeatability, and has great significance in large-scale industrial production and practical application of the Mn3O4 three-dimensional structure (a rod-like self-assembly array-shaped structure or a self-assembly flower-shaped structure); and the obtained three-dimensional structure is high in yield, can be applied to the field of lithium ion batteries and has a good development prospect.

Description

technical field [0001] The present invention relates to a kind of Mn 3 o 4 The preparation method of three-dimensional structure, specifically relates to a kind of Mn 3 o 4 A method for preparing an array-like or flower-like self-assembled structure. Background technique [0002] mn 3 o 4 It is a widely studied oxide material and has great application value in catalysts, lithium-ion batteries, molecular adsorption, and gas-sensing materials. mn 3 o 4 The three-dimensional structure has special morphological characteristics and can display a series of novel physical and chemical properties. mn 3 o 4 The microscopic morphology control of three-dimensional structures has become a hot research topic at the present stage. [0003] At present, scholars at home and abroad have discussed Mn 3 o 4 There are few reports on the three-dimensional structure. The literature "Yoshitaka Nakagawa, Hiroyuki Kageyama, Yuya Oaki, and Hiroaki Imai, J. Am. Chem. Soc. 2014, 136, 3716...

Claims

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Application Information

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IPC IPC(8): C01G45/02B82Y30/00
CPCB82Y30/00C01G45/02C01P2004/30C01P2004/64
Inventor 马谦杨萍陈迎张爱玉曹永强
Owner UNIV OF JINAN
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