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Method for preparing nano strip V2O5

A V2O5, ribbon-shaped technology, which is applied in the field of simple low-temperature hydrothermal reaction to prepare nano-ribbon vanadium pentoxide, can solve the complex problems of the template method, and achieve the effects of good repeatability, huge application potential, and short experimental cycle

Inactive Publication Date: 2010-11-10
JINAN UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The template method is relatively complicated, mainly using the porous membrane as a template to synthesize nanomaterials with specific structures

Method used

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  • Method for preparing nano strip V2O5
  • Method for preparing nano strip V2O5
  • Method for preparing nano strip V2O5

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] (1) The surfactant Pluronic P123 was dissolved in secondary deionized water to obtain a solution 1 with a concentration of 0.01M;

[0027] (2) Add NH to solution 1 obtained in step (1) 4 VO 3 powder, stirred until the solution was dissolved and turned light yellow, and a solution 2 with a concentration of 14.2mM was obtained;

[0028] (3) Add 4ml of reducing agent isopropanol to 36ml of solution 2 obtained in step (2), stir for 10min, then transfer to a polytetrafluoroethylene-lined reactor, keep at 160°C for 24h, cool to room temperature, and filter with suction , washed 6 times with water and ethanol, and dried at 60 °C to obtain dark green NH 4 V 4 o 10 precipitation;

[0029] (4) Change the dark green NH 4 V 4 o 10 Precipitate in air atmosphere and heat at 400°C for 2 hours to obtain orange V 2 o 5 Material (S-1).

[0030] Scan the product S-1 with an electron microscope to obtain the SEM picture of the scanning electron microscope photo, such as figure ...

Embodiment 2

[0034] (1) The surfactant Pluronic P123 was dissolved in secondary deionized water to obtain a solution 1 with a concentration of 0.001M;

[0035] (2) Add NH to solution 1 obtained in step (1) 4 VO 3 powder, stirred until the solution was dissolved and turned light yellow, and a solution 2 with a concentration of 428mM was obtained;

[0036] (3) Add 4 ml of reducing agent isopropanol to 32 ml of solution 2 obtained in step (2), stir for 2 minutes, transfer to a polytetrafluoroethylene-lined reactor, keep at 180 ° C for 12 hours, cool to room temperature, and suction filter , washed 6 times with water and ethanol, and dried at 50°C to obtain dark green NH 4 V 4 o 10 precipitation;

[0037] (4) Change the dark green NH 4 V 4 o10 Precipitate in air atmosphere and heat at 400°C for 2 hours to obtain orange V 2 o 5 Material (S-2) has the same structure, properties and appearance as S-1. It is radially arranged and well dispersed, similar to flower petals. When the hydroth...

Embodiment 3

[0039] (1) The surfactant Pluronic P123 was dissolved in secondary deionized water to obtain a solution 1 with a concentration of 0.005M;

[0040] (2) Add NH to solution 1 obtained in step (1) 4 VO 3 powder, stirred until the solution was dissolved and turned light yellow, and a solution 2 with a concentration of 30mM was obtained;

[0041] (3) Add 4ml of reducing agent isopropanol to 40ml of solution 2 obtained in step (2), stir for 8min, then transfer to a Teflon-lined reactor, keep at 160°C for 15h, cool to room temperature, and filter with suction , washed 6 times with water and ethanol, and dried at 100°C to obtain dark green NH 4 V 4 o 10 precipitation;

[0042] (4) Change the dark green NH 4 V 4 o 10 Precipitate in air atmosphere and heat at 300°C for 3 hours to obtain yellow-green V 3 o 7 ·H 2 O material (S-3).

[0043] Scan the product S-3 with an electron microscope to obtain the SEM picture of the scanning electron microscope photo, such as figure 1 As ...

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Abstract

The invention discloses a method for synthesizing nano strip V2O5 by a low-temperature hydrothermal process. The method comprises the following steps of: (1) dissolving surfactant into secondary deionized water to obtain 0.001 to 0.01M solution 1; (2) dissolving NH4VO3 into the solution 1, and stirring the solution till dissolution to obtain 14.2 to 428mM solution 2; (3) adding a reducing agent into the solution 2 in a volume ratio of 1: 5-1: 10, stirring the solution, transferring the solution into a lining reaction kettle of polytetrafluoroethylene, performing hydrothermal reaction for 12 to 24 hours at the temperature of between 160 and 180 DEG C, and drying a reaction product to obtain NH4V4O10 sediment; and (4) thermally treating the dried sediment for 1 to 3 hours at the temperature of between 300 and 500 DEG C to obtain the nano strip V2O5. The nano strip V2O5 can be used for preparing a sensor, a spinning electronic device, a nano photo-etching template or a high-capacity electrode material.

Description

technical field [0001] The invention belongs to the field of nanometer material preparation, and in particular relates to a method for preparing nanobelt-shaped vanadium pentoxide by simple low-temperature hydrothermal reaction. Background technique [0002] Vanadium oxide is an important functional material, the multivalent state of vanadium, its oxide VO x With multifunctional redox dependence, it has a wide range of applications in catalysis, electrochromism and electrochemistry. Vanadium pentoxide nanobelts are made of V 2 o 5 A one-dimensional structure with uniform width and long length is formed. Vanadium pentoxide nanomaterials can be used as sensors, spintronic devices, nano-lithography templates and high-capacity electrode materials due to the combination of the size characteristics of nanomaterials and the characteristics of vanadium pentoxide. [0003] Vanadium oxide nanostructures are mainly synthesized by four methods: sol-gel, template method, hydrothermal...

Claims

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Application Information

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IPC IPC(8): C01G31/02B82B3/00
Inventor 袁定胜夏南南莫珊珊刘应亮
Owner JINAN UNIVERSITY
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