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A kind of preparation method of α-fe2o3 cube and microsphere

A technology of microspheres and monohydric alcohols, which is applied in the preparation of α-Fe2O3, α-Fe2O3 cubes and microspheres, can solve the problems of harsh reaction conditions, poor shape repeatability, and difficulty in large-scale production. High controllability, low price, good repeatability

Active Publication Date: 2018-03-30
UNIV OF JINAN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Currently, α-Fe 2 o 3 The synthesis process of micro-nano materials generally has problems such as high raw material cost, harsh reaction conditions, poor shape repeatability, low product yield, and difficulty in large-scale production, especially for α-Fe 2 o 3 There are relatively few reports on the structure of micro-nano cubes and spherical self-assembled structures, and the mechanism of interaction between their structural properties and the performance of lithium batteries, catalysis, and gas sensing needs to be further studied

Method used

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  • A kind of preparation method of α-fe2o3 cube and microsphere
  • A kind of preparation method of α-fe2o3 cube and microsphere
  • A kind of preparation method of α-fe2o3 cube and microsphere

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Effect test

Embodiment 1

[0030] 1.1 Mix 0.676 g of ferric chloride hexahydrate (FeCl 3 ∙6H 2 O), 1.800 g of NaHCO 3 , 0.300 g of PVP was added to 25 mL of ethanol solvent, and stirred to obtain a transparent solution;

[0031] 1.2 Transfer the above solution to the reaction kettle, and seal the reaction at 200 °C for 16 h;

[0032] 1.3 After the product is centrifuged and washed, α-Fe is obtained 2 o 3 cubes. The phase structure and microscopic morphology of the product are as follows: figure 1 with 2 shown. figure 1 is α-Fe 2 o 3 In the XRD spectrum of the cube, it can be found that the X-ray diffraction peak is consistent with the JCPDS card (33-0664), which proves that the obtained product is α-Fe 2 o 3 Mutually; figure 2 is α-Fe 2 o 3 The SEM picture of the cube, α-Fe can be found 2 o 3 The side length of the cubes is 57-70 nm, and the dispersion is good.

Embodiment 2

[0034] 2.1 1.010 g of ferric nitrate nonahydrate (Fe(NO 3 ) 3 ∙9H2 O), 1.691 g of NaHCO 3 , 0.050 g of PVP was added to 38 mL of propanol solvent, and stirred to obtain a transparent solution;

[0035] 2.2 Transfer the above solution to the reaction kettle, and seal the reaction at 170 °C for 6 h;

[0036] 2.3 After the product is centrifuged and washed, α-Fe with a side length of 13-17 nm is obtained 2 o 3 cubes.

Embodiment 3

[0038] 3.1 Add 1.010 g of Fe(NO 3 ) 3 ∙9H 2 O, 2.310 g of NaHCO 3 , 0.490 g of PVP was added to 27 mL of ethanol solvent, and stirred to obtain a transparent solution;

[0039] 3.2 Transfer the above solution to the reaction kettle, and seal the reaction at 190 °C for 14 h;

[0040] 3.3 After the product is centrifuged and washed, α-Fe with a side length of 44-55 nm is obtained 2 o 3 cubes.

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Abstract

The invention discloses a preparation method of an alpha-Fe2O3 cube and microsphere. The preparation method comprises the steps of adding ferric salts, sodium bicarbonate, PVP (Polyvinyl Pyrrolidone) or TBAB (tetrabutylammonium bromide) to monohydric alcohol, and stirring so as to obtain a clear solution; heating the solution with a solvothermal method and insulating for a period of time, reacting, then centrifuging and washing so as to obtain a product.The preparation method has the advantages of wide source of raw materials, low price, simple, convenient and controllable synthetic process, adjustable size of the product, high productivity and good shape repeatability, is suitable for mass production and has potential application values in the fields of lithium ion batteries, catalysis and the like.

Description

technical field [0001] The present invention relates to a kind of α-Fe with two different shapes 2 o 3 The preparation method, specifically relates to a kind of α-Fe 2 o 3 A method for preparing cubes and microspheres belongs to the technical field of functional material preparation. Background technique [0002] Iron oxide has many forms at room temperature, and the most stable crystal phase is α-Fe 2 o 3 . Due to α-Fe 2 o 3 Micro-nano materials have the advantages of environmental friendliness, corrosion resistance, excellent physical and chemical properties, easy structure control, large specific surface area, etc., and have attracted widespread attention. It has great application value. [0003] As an important class of multifunctional oxide materials, α-Fe 2 o 3 The regulation of micro-nanostructure has become a hot issue in the field of transition metal oxides. In recent years, α-Fe with different dimensions, controllable size and special morphology 2 o 3...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01G49/06B82Y40/00
CPCC01G49/06C01P2002/72C01P2004/03C01P2004/32C01P2004/38C01P2004/50C01P2004/61C01P2004/62C01P2004/64
Inventor 马谦陈迎车全德王俊鹏陈玲杨萍
Owner UNIV OF JINAN