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Preparation method of one-dimensional basic magnesium carbonate nano wire and porous magnesium oxide nano wire

A technology of nano-magnesium carbonate and porous magnesia, which is applied in magnesium oxide, magnesium carbonate, nanotechnology and other directions to achieve the effects of good crystallinity, high purity, specific surface area and high purity

Inactive Publication Date: 2013-01-30
ANHUI UNIVERSITY OF TRADITIONAL CHINESE MEDICINE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, there is no report on the synthesis of one-dimensional basic magnesium carbonate nanowires.

Method used

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  • Preparation method of one-dimensional basic magnesium carbonate nano wire and porous magnesium oxide nano wire
  • Preparation method of one-dimensional basic magnesium carbonate nano wire and porous magnesium oxide nano wire
  • Preparation method of one-dimensional basic magnesium carbonate nano wire and porous magnesium oxide nano wire

Examples

Experimental program
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Effect test

Embodiment 1

[0024] (1) Add 20.3g of magnesium chloride hexahydrate, 24g of urea and 250ml of water into a 500ml conical flask with stopper, place it in an oven and heat to 100 oC, react for 12 hours to obtain a precipitate;

[0025] (2) Suction and filter the precipitate, and repeatedly wash with water until there is no impurity ion to obtain a filter cake;

[0026] (3) Place the filter cake in an oven and dry it at 80 oC for 4 hours to obtain one-dimensional basic magnesium carbonate nanowires with a diameter of 50-250 nanometers and a length of about 10-500 microns;

[0027] (4) Place the one-dimensional basic magnesium carbonate nanowires in a muffle furnace and heat to 400oC for 1 hour in an air atmosphere to obtain one-dimensional porous magnesium oxide nanowires.

[0028]

Embodiment 2

[0030] (1) Add 4.06g of magnesium chloride hexahydrate, 2.4g of urea and 100ml of water into a 125ml polytetrafluoroethylene reactor, place it in an oven and heat to 100oC, react for 9 hours to obtain a precipitate;

[0031] (2) Suction and filter the precipitate, and repeatedly wash with water until there is no impurity ion to obtain a filter cake;

[0032] (3) Place the filter cake in an oven and dry it at 80 oC for 4 hours to obtain one-dimensional basic magnesium carbonate nanowires with a diameter of 50-250 nanometers and a length of about 10-500 microns;

[0033] (4) Place the one-dimensional basic magnesium carbonate nanowires in a muffle furnace and heat to 400oC for 1 hour in an argon atmosphere to obtain one-dimensional porous magnesium oxide nanowires.

Embodiment 3

[0035] (1) Add 12.04 g of magnesium sulfate, 24 g of urea and 250 ml of water to a 500 ml conical flask with stopper, place it in an oven and heat to 100 oC, react for 12 hours to obtain a precipitate;

[0036] (2) Suction and filter the precipitate, and repeatedly wash with water until there is no impurity ion to obtain a filter cake;

[0037] (3) Place the filter cake in an oven and dry it at 80 oC for 4 hours to obtain one-dimensional basic magnesium carbonate nanowires with a diameter of 50-250 nanometers and a length of about 10-200 microns;

[0038] (4) Place the one-dimensional basic magnesium carbonate nanowires in a muffle furnace, heat it to 500oC in an air atmosphere and calcinate for 1 hour to obtain one-dimensional porous magnesium oxide nanowires.

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Abstract

The invention relates to a preparation method of porous magnesium oxide nano wire, belonging to the technical field of preparation of nano materials. The method comprises steps of sealing a mixed aqueous solution of metal magnesium salts and urea, heating to 90 to 130 DEG C, and reacting for 6 to 24 hours to obtain the one-dimensional basic magnesium carbonate nano wire with a diameter of 50 to 250 nanometers and a length of 10 to 500 micrometers; and then drying the basic magnesium carbonate nano wire, and calcining under an air atmosphere or an inert atmosphere to obtain the one-dimensional porous magnesium oxide nano wire. The method is simple to process and low in production cost, and is very suitable for industrial production.

Description

[0001] technical field [0002] The invention belongs to the technical field of nanomaterial preparation, and in particular relates to a method for preparing one-dimensional basic magnesium carbonate nanowires and porous magnesium oxide nanowires. Background technique [0003] Basic magnesium carbonate is an important inorganic chemical product. It can be used as a filler and reinforcing agent for rubber products, as a heat-insulating and high-temperature-resistant fireproof insulation material, as a desiccant, color-protecting agent, carrier, anti-caking agent, and as an antacid in medicine , can also be used in the manufacture of high-grade glass products, magnesium salts, pigments, paints and daily chemicals, and is also an important precursor for the preparation of porous magnesium oxide. The electrical, optical, thermal and magnetic properties of nanomaterials are significantly different and superior to those of bulk materials, showing bright application prospects, a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01F5/24C01F5/06B82Y30/00B82Y40/00
Inventor 贾勇方方吴培云周双生彭代银
Owner ANHUI UNIVERSITY OF TRADITIONAL CHINESE MEDICINE
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