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

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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 complica...

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

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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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