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SnO2 monodisperse nano monocrystal with square structure and synthesis method thereof

A nano-single-crystal, square-shaped technology, applied in the direction of single crystal growth, single crystal growth, chemical instruments and methods, etc., can solve problems such as unstable performance, uneven particle size, unstable photoelectric performance of nano-tin oxide, etc. Achieve the effect of improving charging efficiency and service life, improving luminous effect and performance

Inactive Publication Date: 2008-01-30
HUAZHONG NORMAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The SnO prepared by the above methods 2 , due to different preparation processes, the obtained particles have uneven particle size, unstable performance, many surface defects, large surface energy, difficult dispersion, and easy agglomeration, which directly leads to the instability of nano-tin oxide in terms of photoelectric performance. Restricted the further development of nano tin oxide

Method used

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  • SnO2 monodisperse nano monocrystal with square structure and synthesis method thereof
  • SnO2 monodisperse nano monocrystal with square structure and synthesis method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] Get analytically pure mass concentration and be 2 milliliters of hydrochloric acid of 36%-38%, add 200 milliliters of distilled water, be made into the solution that acid and distilled water volume ratio are 1: 100, stir on magnetic stirrer, add 0.02 mole tin chloride pentahydrate After mixing evenly, put it into a high-pressure reaction kettle, pressurize it with air to a pre-pressure of 1.0 MPa, put the kettle into a high-temperature salt bath furnace, control the temperature at 330°C, react for 5 hours, then cool to room temperature, and repeat Wash with distilled water and centrifuge to remove chloride ions until the centrifuged water is free of chloride ions. Sampling and analysis by transmission electron microscope; drying at 100°C, fully grinding and dispersing, and XRD analysis. Then bake in a muffle furnace at 650°C for 30 minutes, then grind and disperse, and then bake at 900°C for 2 hours to obtain SnO with high purity and higher crystallinity. 2 Nano single...

Embodiment 2

[0024] Get analytical pure mass concentration and be 7 milliliters of hydrochloric acid of 36%-38%, add distilled water, be made into the dilute hydrochloric acid solution that hydrochloric acid and distilled water volume ratio are 1: 30, stir on magnetic stirrer, add 0.02 mole tin chloride pentahydrate After mixing evenly, put it into a high-pressure reactor, pressurize it with air to a pre-pressure of 0.3 MPa, put it into a high-temperature salt bath furnace, control the temperature at 330°C, and react for 4 hours, then cool to room temperature, and repeatedly use distilled water Wash and centrifuge the water to remove chloride ions until the centrifuged water is free of chloride ions. Samples were taken for transmission electron microscopy analysis.

[0025] Synthetic SnO 2 The TEM of the nano single crystal is shown in Figure 2. As can be seen from Figure 2, the synthesized SnO 2 It is a nano single crystal with a rod-like structure, uniform in thickness, 5-50 nanometer...

Embodiment 3

[0027] Get analytical pure mass concentration and be 36%-38% hydrochloric acid 4ml, add distilled water, be made into the dilute hydrochloric acid solution that hydrochloric acid and distilled water volume ratio are 1: 50, stir on magnetic stirrer, add 0.02 mole tin chloride pentahydrate, After mixing evenly, put it into a high-pressure reactor, pressurize it with air until the pre-pressure reaches 1.1 MPa, put it into a high-temperature salt bath furnace, control the temperature at 330°C, react for 5 hours, then cool to room temperature, and wash with distilled water repeatedly And centrifuging to remove water to remove chloride ions until the centrifuged water is free of chloride ions. Samples were taken for transmission electron microscopy analysis.

[0028] Synthetic SnO 2 The TEM of the nano single crystal is shown in Figure 3. As can be seen from Figure 3, the synthesized SnO 2 It is a nano single crystal with a rod-like structure, uniform in thickness, 5-50 nanometer...

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Abstract

The synthesis method for a monodispersed rod nano SnO2 monocrystal with tetragonal structure of 5-50nm size and 50-300 length comprises: dissolving the SnCl4 into HCl to mix and then put into high-pressure kettle, filling air to 0.1-1.5MPa for pre-pressing; holding for 4-8h at 200-400Deg. This invention makes use of solution acidity and pre-pressing to grow the mono crystal with largest density and almost no detect fit to cell cathode material or luminous device.

Description

technical field [0001] The invention relates to a tetragonal structure SnO 2 Monodisperse nanometer single crystal and its synthesis method, especially related to a tetragonal structure SnO prepared by hydrothermal-hydraulic method 2 Monodisperse nano single crystal and its synthesis method. Background technique [0002] SnO 2 It is a typical n-type semiconductor material with a wide range of uses. It can be used as a catalyst and chemical raw material in organic synthesis; it can be used as an opacifying agent for glazes and enamel in the ceramic industry; it can also be used for conductive materials and films. Resistors and optoelectronic devices and other fields. Due to the small size effect and surface effect, nano-tin oxide has special photoelectric properties and gas-sensing properties, making it have potential applications in gas-sensing components, semiconductor components, electrode materials, solar cells, etc. Therefore, the application and development of tin o...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C30B7/10C30B29/16C30B29/60C01G19/02
Inventor 梁英夏晓红范晶贾志杰
Owner HUAZHONG NORMAL UNIV
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