Manganese vanadate nano-micro material, and synthetic method and application thereof

A technology of manganese vanadate nano and manganese vanadate, which is applied in nanotechnology, manganese compounds, nanotechnology, etc., to achieve the effect of excellent product crystallization performance, easy control of morphology and structure, and suitable for mass production

Active Publication Date: 2015-04-22
SHIJIAZHUANG UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003]So far, about Mn6.87(OH)3(VO4 )3.6(V2O7)0.2 The research on nano-micron materials has not been reported at home and abroad. However, for nanomaterials, their composition, morphology, and preparation methods are closely related to their performance, which is of great significance to the diversification of materials and potential functional diversification. It can be seen that the development of manganese vanadate materials with different compositions and morphologies is important. Breakthroughs are urgently needed in the field of materials

Method used

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  • Manganese vanadate nano-micro material, and synthetic method and application thereof
  • Manganese vanadate nano-micro material, and synthetic method and application thereof
  • Manganese vanadate nano-micro material, and synthetic method and application thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0022] At room temperature, dissolve 2mmol of sodium orthovanadate in 6mL of distilled water, and add 1mmol of MnSO 4 ·H 2 Dissolve O in 8 mL of distilled water, add the sodium orthovanadate solution dropwise to MnSO under magnetic stirring 4 In the solution, stir for 10 min, with 1mol / L of H 2 SO 4 The solution adjusts the pH value of the reaction system to 7, continues to stir for 10 minutes, then transfers it into a 20 mL hydrothermal reactor, seals it and places it in a thermostat for hydrothermal reaction at 160 ℃ for 6 hours, and cools to room temperature after the reaction is complete , Washed with deionized water and absolute ethanol for 3 times, centrifuged, and put the resulting precipitate in an oven at 60 ℃ for vacuum drying for 16 hours to obtain manganese vanadate Mn 6.87 (OH) 3 (VO 4 ) 3.6 (V 2 O 7 ) 0.2 material. The above products were analyzed by X-ray diffraction (XRD) and scanning electron microscopy, and the results were as follows: figure 1 , figure 2 As sh...

Embodiment 2

[0024] At room temperature, dissolve 0.2mmol of sodium orthovanadate in 6 mL of distilled water, and add 0.1mmol of MnCl 2 Dissolve in 8mL distilled water, under the action of magnetic stirring, add sodium orthovanadate solution dropwise to MnCl 2 In the solution, stir for 10 minutes, adjust the pH value of the reaction system to 8 with 1mol / L HCl solution, continue to stir for 10 minutes, then transfer to a 20 mL hydrothermal reactor, seal it and place it in a thermostat Hydrothermal reaction at 180 ℃ for 4h, cooling to room temperature after the completion of the reaction, washing with deionized water and absolute ethanol for 5 times, centrifugation, and placing the obtained precipitate in an oven at 80 ℃ for vacuum drying for 8 hours to obtain manganese vanadate Mn 6.87 (OH) 3 (VO 4 ) 3.6 (V 2 O 7 ) 0.2 Nanoparticle materials are spherical particles with a diameter of 30-60nm.

Embodiment 3

[0026] At room temperature, dissolve 2mmol of sodium orthovanadate in 6mL of distilled water, and add 2mmol of MnCl 2 Dissolve in 8 mL of distilled water, add sodium orthovanadate solution dropwise to MnCl under magnetic stirring 2 In the solution, stir for 10 min, with 1mol / L HNO 3 The solution adjusts the pH value of the reaction system to 8 and continues to stir for 10 minutes, then transfer it into a 20 mL hydrothermal reactor, seal it and place it in a thermostat for hydrothermal reaction at 180 ℃ for 22 h, and cool to At room temperature, wash with deionized water and absolute ethanol for 5 times, centrifuge, and place the obtained precipitate in an oven at 80 ℃ for vacuum drying for 8 hours to obtain manganese vanadate Mn 6.87 (OH) 3 (VO 4 ) 3.6 (V 2 O 7 ) 0.2 material. The above products were analyzed by XRD and scanning electron microscopy, and the results were as follows: image 3 , Figure 4 As shown, the XRD spectrum results show that the intensity and position of the...

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Abstract

The invention discloses a manganese vanadate nano-micro material and a synthetic method and application thereof, belonging to the field of inorganic non-metallic materials. The composition of the nano-micro manganese vanadate material is Mn6.87(OH)3(VO4)3.6(V2O7)0.2, and the material is in the form of nanoparticle, microrod or microtube. The synthetic method comprises the following steps: preparing a mixed solution from sodium orthovanadate and manganese salt according to a mol ratio of V to Mn of 1-3: 1; adjusting the pH value of the mixed solution to be 7 to 8, carrying out stirring for 10 min, then transferring the mixed solution into a reaction vessel and carrying out a reaction at a temperature of 160 to 260 DEG C for 1 to 24 h so as to obtain the solution of a crude product; and cooling the solution of the crude product to room temperature and carrying out cooling and drying so as to obtain the manganese vanadate Mn6.87(OH)3(VO4)3.6(V2O7)0.2 nano-micro material. The invention has the following beneficial effects: the nano-micro material is synthesized by using a one-step hydrothermal method and a wet method, low-temperature controllable preparation of manganese vanadate is realized, and energy consumption is low; no surfactant or organic template is needed in the process of synthesis, so the synthetic method is friendly to the environment and the produced nano-micro material is pure and has excellent crystallization property; the nano-micro material has uniform morphology and size; and the synthetic method is simple, can be realized under controllable conditions, is suitable for batch production and lays a good foundation for application and research.

Description

technical field [0001] The invention belongs to the field of inorganic non-metallic materials, and in particular relates to a manganese vanadate nano-micron material and its synthesis method and application. Background technique [0002] Manganese vanadate is an important inorganic material. According to the different proportions of manganese, vanadium and oxygen, manganese vanadate has many different compositions and structures. Such materials have good application prospects in electrical devices, optical devices and lithium-ion batteries due to their good electrical, optical and electrochemical properties. The traditional synthetic method of manganese vanadate is mainly high-temperature solid-state reaction, manganese vanadate powder with irregular shape can be prepared by high-temperature solid-phase method, the reaction process consumes a lot of energy, and the cycle is long, and the product is usually a block Bulk material, large and uneven in size. In recent years,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01G45/00H01M4/131H01M4/1391B82Y30/00
CPCY02E60/10
Inventor 张绍岩次立杰李中秋
Owner SHIJIAZHUANG UNIVERSITY
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