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Preparation method of NaV2O5 crystal material with right angle morphology

A technology of crystal materials and right angles, applied in chemical instruments and methods, vanadium compounds, inorganic chemistry, etc., can solve the problem of small crystal particles, and achieve the effect of simple preparation process and equipment

Inactive Publication Date: 2012-04-18
HEBEI UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although there are some reports on crystals of this type of material, the crystal particles are small and mostly exist in the form of nanorods.

Method used

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  • Preparation method of NaV2O5 crystal material with right angle morphology
  • Preparation method of NaV2O5 crystal material with right angle morphology
  • Preparation method of NaV2O5 crystal material with right angle morphology

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] Embodiment 1: Dissolve 0.210g (0.001mol) of organic matter trimesic acid in 5g (0.28mol) of water, add 1.75ml NaOH solution (concentration is 2mol / l) after stirring at normal temperature for 5 minutes, continue to stir at normal temperature for about 15 Minutes, then add a solvent composed of 2.5g water (0.14mol) and 2.5g (0.055mol) absolute ethanol to obtain a colorless and transparent solution, and finally add 0.2339g (0.002mol) NH 4 VO 3 , the solution at this time was milky yellow and turbid, and after stirring for 40 minutes, the measured mixture pH was 7.5-8.0, (the mol ratio of the mixture is NH 4 VO 3 : Trimellitic acid: NaOH=2: 1: 3.5; The quality of every mole of trimesic acid corresponding solvent is 5 kilograms, water in the solvent: the mass ratio of ethanol=1. Transfer the mixture into a stainless steel reaction kettle lined with polytetrafluoroethylene, put it in a constant temperature drying oven at 180°C for aging for two days, take out the mixture af...

Embodiment 2

[0031] Example 2: Dissolve 0.210g (0.001mol) organic matter trimesic acid in 5g (0.28mol) water, add 1.75ml NaOH solution (2mol / l) after stirring at normal temperature for 5 minutes, and continue stirring for about 15 minutes at normal temperature, Then add a solvent consisting of 2.5g (0.14mol) of water and 2.5g (0.055mol) of absolute ethanol to obtain a colorless and transparent solution, and finally add 0.117g (0.001mol) of NH 4 VO 3 , the solution at this time was milky yellow and turbid, and after stirring for 60 minutes, the pH measured was 7.5-8.0, (the mol ratio of the mixture was NH 4 VO 3 : Trimellitic acid: NaOH=1: 1: 3.5; The quality of every mole of trimesic acid corresponding solvent is 10 kilograms, water in the solvent: the mass ratio of ethanol=1. Transfer the mixture into a stainless steel reaction kettle lined with polytetrafluoroethylene, put it in a constant temperature drying oven at 180 ° C for one month, then take out the sample and filter it, dry it ...

Embodiment 3

[0032] Example 3: Dissolve 0.210g (0.001mol) organic matter trimesic acid in 2.5g (0.14mol) water, add 1.75ml NaOH solution (2mol / l) after stirring at normal temperature for 5 minutes, and continue stirring for about 15 minutes at normal temperature , and then add a solvent consisting of 2.5g (0.055mol) of absolute ethanol solution to obtain a colorless and transparent solution, and finally add 0.4679g (0.004mol) of NH to the mixed solution 4 VO 3 , a yellow turbid liquid was obtained, and the measured pH was 7.0-7.2 after stirring for 40 minutes, and the molar ratio of the mixture was NH 4 VO 3 : Trimellitic acid: NaOH=4: 1: 3.5; The quality of every mole of trimesic acid corresponding solvent is 2.5 kilogram . Transfer the mixture into a stainless steel reaction kettle lined with polytetrafluoroethylene, put it in a constant temperature drying oven at 180 ° C for 7 days, then take out the sample and filter it, dry it in a constant temperature drying oven at 40 ° C, and ...

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Abstract

The invention relates to a preparation method of a NaV2O5 crystal material with right angle morphology. The method comprises the following steps: a), dissolving an aromatic acid organic matter in water, adding a sodium hydroxide solution under the condition of stirring at room temperature, adding a solvent, and stirring for 40-60 minutes at room temperature so as to obtain an evenly mixed solution; b), adding ammonium metavanadate in the mixture so as to obtain a yellow and transparent mixed liquid, transferring the mixture into a stainless steel reaction kettle with a polytetrafluoroethylenelining after stirring for 3 hours, and then placing the reaction kettle in a constant-temperature drying oven of 150-200 DEG C to age for 2-60 days; and c), taking out and filtering the mixture finally obtained in the step b), drying the mixture in the constant-temperature drying oven of 40-60 DEG C so as to finally obtain the NaV2O5 crystal material with a right angle L shape. In the preparationmethod provided by the invention, ammonium metavanadate is adopted as a reactant, an alkaline solvent system of the organic matter in water / absolute ethyl alcohol is used, thus the preparation methodis environment-friendly, has simple preparation process and utilizes simple equipment, and the obtained NaV2O5 crystal material with L shape can be used for research on nano optical devices.

Description

technical field [0001] The present invention relates to a kind of rectangular shape NaV 2 o 5 The invention relates to a preparation method of a crystal material, which belongs to the field of inorganic material preparation. Background technique [0002] Inorganic metal oxides exist in many forms in nature. When chemists synthesize various inorganic oxides with different shapes, they always hope to obtain compounds with different shapes in order to expand their application fields. [0003] Among the materials reported so far, the inorganic materials mainly composed of zinc oxide have the most diverse morphology. Most of the synthetic materials can find similar shapes in nature, such as nanotubes, nanoflowers, nanowires and so on. A recent report describes a V-shaped and Y-shaped iron oxide nanomaterial obtained by dehydration of ferrous hydroxide. Its V-shaped included angle is about 108° (CrystEngComm, 2010, 12, 1842-1849). However, transition metal oxide materials wit...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01G31/00B82Y40/00
Inventor 任铁真范洪杰郑冉
Owner HEBEI UNIV OF TECH
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