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A kind of preparation method of nanoscale tin oxide powder

A tin oxide powder and nano-scale technology, applied in the direction of tin oxide, nanotechnology, nanotechnology, etc., can solve the problems of inability to realize industrialized mass production, easy agglomeration of oxides, strict process requirements, etc., and achieve short preparation cycle and high preparation process Simple, evenly distributed effect

Inactive Publication Date: 2020-04-24
XI'AN POLYTECHNIC UNIVERSITY
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  • Claims
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Problems solved by technology

However, when the above method is used to prepare nano-tin oxide, the process requirements are strict, and the oxides are easy to agglomerate during the preparation process, so that the yield of nano-tin oxide prepared by the above method is low, and industrialized mass production cannot be realized.

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  • A kind of preparation method of nanoscale tin oxide powder

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preparation example Construction

[0024] A preparation method of nanoscale tin oxide powder, specifically according to the following steps:

[0025] Step 1, prepare imidazolium ionic liquid precursor amphoteric salt by hydrothermal synthesis method, specifically follow the steps below:

[0026] Step 1.1, mix N-methylimidazole, dimethyl carbonate and alcohol with a volume ratio of 1-3:2-4:1 evenly, put them in a hydrothermal reaction kettle, and heat Carry out hydrothermal reaction for 20h~50h, after the reaction is completed, cool to room temperature to obtain a mixed liquid;

[0027] In step 1.2, the mixed liquid is put into a rotary evaporator for purification by rotary evaporation under reduced pressure to obtain a solid amphoteric salt of the precursor of the imidazolium ionic liquid.

[0028] Step 2, weigh the tin salt and the amphoteric salt of the precursor of the imidazolium ionic liquid, wherein the molar ratio of the tin salt and the amphoteric salt of the precursor of the imidazolium ionic liquid i...

Embodiment 1

[0033] A preparation method of nanoscale tin oxide powder, specifically according to the following steps:

[0034] Step 1, prepare imidazolium ionic liquid precursor amphoteric salt by hydrothermal synthesis method, specifically follow the steps below:

[0035] Step 1.1, after mixing N-methylimidazole, dimethyl carbonate and methanol with a volume ratio of 1:2:1 evenly, put it into a hydrothermal reaction kettle, and conduct a hydrothermal reaction at a temperature of 70°C for 20 hours, and the reaction Cool to room temperature after completion to obtain a mixed liquid;

[0036] In step 1.2, the mixed liquid is put into a rotary evaporator for purification by rotary evaporation under reduced pressure to obtain a solid amphoteric salt of the precursor of the imidazolium ionic liquid.

[0037] Step 2, weigh 0.325 grams of SnCl respectively according to the molar ratio of 1:6 4 ·5H 2 O and 0.77 grams of imidazolium ionic liquid precursor amphoteric salt;

[0038] SnCl 4 ·5H ...

Embodiment 2

[0041] A preparation method of nanoscale tin oxide powder, specifically according to the following steps:

[0042] Step 1, prepare imidazolium ionic liquid precursor amphoteric salt by hydrothermal synthesis method, specifically follow the steps below:

[0043] Step 1.1, after mixing N-methylimidazole, dimethyl carbonate and ethanol with a volume ratio of 1:4:1 evenly, put them into a hydrothermal reaction kettle, and conduct a hydrothermal reaction at a temperature of 130°C for 50 hours, and the reaction Cool to room temperature after completion to obtain a mixed liquid;

[0044] In step 1.2, the mixed liquid is put into a rotary evaporator for purification by rotary evaporation under reduced pressure to obtain a solid amphoteric salt of the precursor of the imidazolium ionic liquid.

[0045] Step 2, weigh 0.345 grams of SnCl respectively according to the molar ratio of 1:10 2 2H 2 O and 2.14 grams of imidazolium ionic liquid precursor amphoteric salt;

[0046] SnCl 2 2H...

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Abstract

The invention discloses a method of preparing nano-scale tin oxide powder. The method of preparing the nano-scale tin oxide powder includes the steps of preparing imidazolium ionic liquid precursor amphiphilic salt, dissolving tin salt in solvent to obtain a tin salt solution, dissolving the imidazolium ionic liquid precursor amphiphilic salt in the tin salt solution to obtain a precursor solution, cooling the precursor solution to room temperature after the precursor solution conducts hydrothermal reaction to obtain a precursor reaction solution, washing the precursor reaction solution several times until Cl- (chloride ion) is completely removed from the precursor reaction solution, and drying the precursor reaction solution by air to obtain the nano-scale tin oxide powder. The method ofpreparing the nano-scale tin oxide powder has the advantages of having short preparation cycle and simple preparation process, being suitable for industrial mass production and preparing the tin oxidepowder that has fine and evenly distributed particles and meets the requirements of the tin oxide powder in various fields.

Description

technical field [0001] The invention belongs to the technical field of nanomaterial preparation and relates to a preparation method of nanoscale tin oxide powder. Background technique [0002] Nano-tin oxide has the characteristics of large specific surface area, high activity, low melting point, and good thermal conductivity. It has a wide range of applications in the fields of gas-sensitive materials, lithium-ion battery anode materials, conductive materials, thin-film resistors, optoelectronic devices, and wave-absorbing materials. How to prepare ultra-fine tin oxide powder with small and uniform particle size and high specific surface area has become the focus of the fields of electrode materials and gas-sensing materials. [0003] At present, there are many methods for preparing nano-tin oxide, mainly physical methods such as sputtering, vapor deposition, plasma, and chemical methods such as hydrothermal method, alkoxide hydrolysis method and chemical precipitation met...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01G19/02B82Y30/00B82Y40/00C07D233/58
CPCB82Y30/00B82Y40/00C01G19/02C01P2002/72C07D233/58
Inventor 侯海云杨凯刘松涛杨敏鸽思芳蔺鑫璐师浩军周辛梓游艺博张晨歌
Owner XI'AN POLYTECHNIC UNIVERSITY