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Preparation method of CaB6 nanosheet

A nanosheet, sodium borohydride technology, applied in the direction of boron/boride, metal boride, etc., can solve the problems of time-consuming and energy-consuming, and achieve a large specific surface area, strong antibacterial activity, and excellent Haemophilus influenzae activity. Effect

Inactive Publication Date: 2020-02-28
CHENGDU UNIVERSITY OF TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, currently, CaB 6 The preparation of nano-micron powder is mainly prepared by high-temperature sintering, which not only consumes energy but also takes time

Method used

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  • Preparation method of CaB6 nanosheet
  • Preparation method of CaB6 nanosheet
  • Preparation method of CaB6 nanosheet

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] (1) 3mmolCaCl 2 Add appropriate amount of PVP into 25mL ionic liquid, and stir for 30 minutes under the protection of argon to form a solution;

[0030] (2) Transfer the mixed solution of step (1) into a 60mL pressure-resistant reaction bottle under the protection of argon, and add an appropriate amount of sodium borohydride to make CaCl 2 , the mol ratio of PVP and sodium borohydride is: 1:0.075:9;

[0031] (3) Turn on the liquid-phase plasma, the power is 750W, and the mixture in the reaction kettle of step (2) is subjected to plasma treatment at room temperature, and the prepared product is obtained after reacting for 60 minutes;

[0032] (4) Wash the product three times with deionized water, then three times with absolute ethanol, and dry it for later use.

Embodiment 2

[0034] (1) 3mmolCaCl 2 Add appropriate amount of PVP into 25mL ionic liquid, and stir for 30 minutes under the protection of argon to form a solution;

[0035] (2) Transfer the mixed solution of step (1) into a 60mL pressure-resistant reaction bottle under the protection of argon, and add an appropriate amount of sodium borohydride to make CaCl 2 , the mol ratio of PVP and sodium borohydride is: 1:0.075:9;

[0036] (3) Turn on the liquid-phase plasma, the power is 1000W, carry out plasma treatment to the mixture in the reaction kettle of step (2) at room temperature, obtain the prepared product after reacting for 60min;

[0037] (4) Wash the product three times with deionized water, then three times with absolute ethanol, and dry it for later use.

Embodiment 3

[0039] (1) 3mmolCaCl 2 Add appropriate amount of PVP into 25mL ionic liquid, and stir for 30 minutes under the protection of argon to form a solution;

[0040] (2) Transfer the mixed solution of step (1) into a 60mL pressure-resistant reaction bottle under the protection of argon, and add an appropriate amount of sodium borohydride to make CaCl 2 , the mol ratio of PVP and sodium borohydride is: 1:0.075:9;

[0041] (3) Turn on the liquid-phase plasma, the power is 500W, and the mixture in the step (2) reactor is subjected to plasma treatment at room temperature, and the prepared product is obtained after reacting for 60 minutes;

[0042] (4) Wash the product three times with deionized water, then three times with absolute ethanol, and dry it for later use.

[0043] CaB of the present invention 6 Properties of nanosheets:

[0044] The sample prepared in Example 1 was characterized by TEM, figure 1 TEM image of the sample. from figure 1 It can be seen that the sample has ...

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Abstract

The invention discloses a preparation method of a CaB6 nanosheet. The CaB6 nanosheet is successfully synthesized by reducing CaCl2 with sodium borohydride in ionic liquid at a room temperature througha liquid-phase plasma technology, with PVP used as a surfactant. Compared with commercial CaB6, the CaB6 nanosheet prepared by the preparation method disclosed by the invention is larger in specificsurface area and stronger in antibacterial effect. Compared with amikacin and vertilmicin sulfate, the CaB6 nanosheet prepared by the preparation method disclosed by the invention shows stronger antibacterial activity on Haemophilus influenzae. With excellent antibacterial performance on Haemophilus influenzae, the CaB6 is expected to be expanded in application to the field of clinical treatment of bacterial pneumonia, meningitis, epiglottis, bacteraemic pneumonia and the like.

Description

technical field [0001] The present invention relates to a CaB 6 The nano sheet method belongs to the technical field of advanced nano material preparation. Background technique [0002] CaB 6 It is an important material that plays a greater role in national defense and civilian industries. With the development of science and technology, people realize that the morphology and structure have a great influence on the performance of materials. However, currently, CaB 6 The preparation of nano-micron powder is mainly prepared by high-temperature sintering, which not only consumes energy but also takes time. Therefore, it is very necessary to develop new preparation techniques or methods to synthesize CaB 6 . Contents of the invention [0003] The present invention uses liquid-phase plasma technology to reduce CaCl by sodium borohydride in ionic liquid at room temperature for the first time, using PVP as a surfactant 2 synthesized CaB 6 The nanosheet has an average thick...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B35/04
CPCC01B35/04C01P2004/04C01P2002/72
Inventor 童东革周瑞吴平
Owner CHENGDU UNIVERSITY OF TECHNOLOGY