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a bazrs 3 Preparation method and application of nanocrystal

A technology of nanocrystals and nanoparticles, which is applied in the field of BaZrS3 nanocrystal preparation, can solve problems such as unfavorable photocatalysis, material decomposition, difficult synthesis, etc., and achieve good practical value and application prospects

Active Publication Date: 2022-04-29
SHAOXING UNIVERSITY +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] 1. Poor stability
Poor stability in common environments, the structure of organic-inorganic metal halide perovskite materials is easily destroyed by moisture, resulting in material decomposition
[0006] 2. Toxicity
[0014] 1. The synthesis cycle is long and extremely difficult to synthesize
[0015] 2. Large particle size is not conducive to photocatalysis

Method used

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  • a bazrs <sub>3</sub> Preparation method and application of nanocrystal
  • a bazrs <sub>3</sub> Preparation method and application of nanocrystal
  • a bazrs <sub>3</sub> Preparation method and application of nanocrystal

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044] This embodiment provides a BaZrS 3 The preparation method of nanocrystal comprises the following steps:

[0045] S1. Synthesis of Zr-MOF nanoparticles

[0046] S1.1, first put 0.123g of zirconium chloride into 15mL of N,N-dimethylformamide, and then add 1mL of 12M concentrated hydrochloric acid to the solution;

[0047] S1.2, ultrasonicating the mixed solution finally obtained in step S1.1 for 5 minutes to fully dissolve it;

[0048] S1.3, adding 0.125g of terephthalic acid to the mixed solution finally obtained in step S1.2;

[0049] S1.4. Ultrasonic the mixed solution finally obtained in step S1.3 for 20 minutes to fully dissolve until the solution becomes a colorless and transparent solution;

[0050] S1.5. Add the mixed solution finally obtained in step S1.4 into a 50mL centrifuge tube, seal the centrifuge tube and put it in a drying oven, and react at a constant temperature of 80°C for 24h. The obtained product was washed 3 times with N,N-dimethylformamide, the...

Embodiment 2

[0057] Figure 5 The thermogravimetric diagram of the Zr-MOF nanoparticles prepared in Example 1. It is shown that the pyrolysis temperature of Zr-MOF nanoparticles is 520 °C. It shows that the Zr-MOF has been completely decomposed after the reaction at 1000℃ for 4h.

Embodiment 3

[0059] Image 6 BaZrS prepared in Example 1 3 UV diffuse reflectance map of nanocrystals. show that the prepared BaZrS 3 Nanocrystals have good absorption of light, but there is no obvious absorption edge, which may be caused by a layer of amorphous carbon coating on the surface.

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Abstract

The invention discloses a BaZrS 3 The preparation method of nanocrystal comprises the following steps: S1, synthesizing Zr-MOF nanoparticles; S2, synthesizing BaZrS 3 Nanocrystalline. In the present invention, Zr-MOF nanoparticles with smaller size are used as the Zr source in the synthetic material, and the template effect of Zr-MOF is used to control the synthesis of nano-scale BaZrS 3 Materials, synthesized BaZrS 3 The particles are small and can effectively reduce carbon dioxide to products such as carbon monoxide and methane, which has good practical value and application prospects.

Description

technical field [0001] The invention relates to the field of inorganic nanomaterials, in particular to and discloses a BaZrS 3 Preparation methods and applications of nanocrystals. Background technique [0002] CO 2 It is a very common gas in daily life, and its content in the air generally accounts for about 0.03%. However, due to the excessive exploitation and use of fossil fuels by humans, CO2 on the earth in recent years has 2 The content has soared, leading to a series of serious problems such as the greenhouse effect, global warming, melting glaciers, and rising sea levels. So how to reduce CO 2 concentration becomes a looming issue. Reduce CO 2 The concentration of CO can be reduced by emission reduction, afforestation, collection and conversion, etc. In this series of methods, photocatalytic reduction of CO 2 The method has attracted extensive attention due to its advantages of high efficiency, energy saving, environmental protection, mild reaction conditions, ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01G25/00B82Y40/00B01J27/04B01J37/08C07C1/02C07C9/04
CPCC01G25/006B82Y40/00B01J27/04B01J37/086C07C1/02C01P2004/03C01P2004/04C01P2002/72C01P2002/88C01P2002/84B01J35/40C07C9/04
Inventor 马德琨武翔徐全龙李自新齐陈泽
Owner SHAOXING UNIVERSITY