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Preparation method of micro-nano SN and application of micro-nano SN

A micro-nano and reaction technology, applied in nanotechnology and other directions, can solve the problems of harsh morphology control conditions and difficult preparation process conditions, and achieve the effects of controllable morphology, simple and easy process, and reduced requirements.

Active Publication Date: 2018-10-16
SHENZHEN INST OF ADVANCED TECH CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The purpose of the present invention is to overcome the above-mentioned deficiencies in the prior art, and provide a method for preparing micro-nano Sn, so as to solve the technical problems that the existing preparation method of nano-Sn is difficult to control the preparation process conditions and the conditions for shape control are harsh.

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  • Preparation method of micro-nano SN and application of micro-nano SN

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[0022] The embodiment of the present invention provides a preparation method of micro-nano Sn whose process conditions and morphology are easy to control. In one embodiment, the process flow of the preparation method of micro-nano Sn in the embodiment of the present invention is as follows figure 1 shown, including the following steps:

[0023] S01: Preparation of stannous oleate precipitation: Precipitate stannous salt with oleate surfactant in ethanol solvent to generate stannous oleate precipitation;

[0024] S02: reducing stannous oleate to generate micro-nano Sn: reducing the stannous oleate and excess reducing agent in a closed system to generate micro-nano Sn.

[0025] Specifically, in the above step S01, the stannous salt reacts with the oleate, so that the oleate ion combines with the stannous ion to form a stannous oleate precipitate. During the reaction, the oleate ions protect the stannous ions and avoid the oxidation reaction of the stannous ions, so that step S...

Embodiment 1

[0044] A method for preparing micro-nano Sn, comprising the following process steps:

[0045] Weigh 0.045g SnCl 2 2H 2 O was dissolved in 60mL of absolute ethanol, and 0.1216g of sodium oleate was added to it, and after stirring for 30-60min, excess sodium borohydride was added, sealed in a 100mL hydrothermal kettle, and the stirring speed was controlled at 500rpm. After stirring for 10 hours, a dark gray turbid liquid was obtained, which was centrifuged, washed several times with industrial alcohol, and dried in a vacuum oven.

[0046] Get the sample prepared in this embodiment 1 and carry out XRD and SEM characterization, SEM characterization result is as follows figure 2 a and figure 2 As shown in b, the XRD characterization results are as follows image 3 shown. Depend on figure 2 a and figure 2 b It can be seen that the morphology of the sample powder prepared in Example 1 is mostly spherical, the particle size is mostly between 100-150nm, and there are a smal...

Embodiment 2

[0048] A method for preparing micro-nano Sn, comprising the following process steps:

[0049] Weigh 0.0337g SnCl 2 2H 2 O was dissolved in 60mL of absolute ethanol, and 0.0912g of sodium oleate was added to it, and after stirring for 30-60min, excess sodium borohydride was added, sealed in a 100mL hydrothermal kettle, and the stirring speed was controlled at 500rpm. After stirring for 10 hours, a dark gray turbid liquid was obtained, and finally the sample was treated and washed according to Embodiment 1, and the sample was dried.

[0050] The samples prepared in Example 2 were taken for XRD and SEM characterization. Among them, the SEM characterization results are as follows figure 2 c and figure 2 As shown in d, the XRD characterization results are as image 3 . Depend on figure 2 c and figure 2 d It can be seen that the sample powder prepared in Example 2 is mostly rod-shaped, with a length between 300-800nm ​​and a width between 60-90nm. There is also a small...

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Abstract

The invention discloses a preparation method of micro-nano Sn and application of the micro-nano Sn. The invention provides the preparation method of the micro-nano Sn, which comprises the steps of: preparing stannous oleate precipitates; reducing stannous oleate to generate the micro-nano Sn; carrying out washing processing on the micro-nano Sn, and the like. According to the preparation method of the micro-nano Sn, which is provided by the invention, oleic radial ions are adopted to take a good protection effect on Sn ions, and inert gas does not need to be filled to prevent oxidation; meanwhile, the stannous oleate only needs to be reduced by adopting a reducing agent in a closed system. Therefore, according to the preparation method of the micro-nano Sn, which is provided by the invention, heating and setting of protective atmosphere for preventing oxidation of the product do not need to be carried out in each step; the reducing agent can be added in one step; the process is simple and easy to operate; reaction conditions are mild; the preparation method is easy to control, has low requirements for equipment; requirements on process conditions are effectively reduced; the preparation method is safe and environmental-friendly. In addition, the micro-nano Sn prepared by the preparation method of the micro-nano Sn, which is provided by the invention, is at a micro-nano level, has a narrow size range, and is controllable in morphology.

Description

technical field [0001] The invention belongs to the technical field of inorganic nanometer materials, in particular to a preparation method of micronano Sn and the application of micronano Sn prepared by the preparation method of micronano Sn. Background technique [0002] Inorganic nanomaterials have great application prospects in the fields of magnetism, optics, catalysis, etc. Nanostructures with different shapes will show different properties. [0003] Among them, inorganic nano-Sn is commonly used in inorganic nano-materials. The size effect of nanomaterials makes nano-scale Sn exhibit better properties in many aspects, so the synthesis method of nano-Sn and how to control its shape, size and distribution are very important. [0004] At present, Sn has been widely used as a solder component in the field of electronic packaging. It used to be the main component of Sn-Pb solder. With the enhancement of human environmental protection awareness, the use of lead-containing ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B22F9/24B82Y40/00
CPCB22F9/24B82Y40/00
Inventor 孙蓉谢金麒符显珠
Owner SHENZHEN INST OF ADVANCED TECH CHINESE ACAD OF SCI
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