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A kind of preparation method of two-dimensional flake cu3bis3

A flake, dodecanethiol technology, applied in chemical instruments and methods, inorganic chemistry, bismuth compounds, etc., can solve problems such as precise operation control requirements, inability to use flexible batteries, and unfavorable industrial amplification, and achieves low cost and process. The effect of short cycle and convenient control

Active Publication Date: 2016-07-06
WENZHOU UNIVERSITY
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  • Description
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  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the TiO prepared by the literature 2 / flake Cu 3 BY 3 Flake Cu in the product 3 BY 3 with TiO 2 Although it is inconvenient to separate, there are many limitations in application, such as not being able to be used on flexible batteries, etc.
Moreover, when the solvothermal method is used for preparation, there are disadvantages such as precise operation control requirements, complicated process and poor repeatability, which is not conducive to industrial scale-up

Method used

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  • A kind of preparation method of two-dimensional flake cu3bis3
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  • A kind of preparation method of two-dimensional flake cu3bis3

Examples

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preparation example Construction

[0042] Preparation of bismuth diethyldithiocarbamate

[0043] Add 30mmol sodium diethyldithiocarbamate (Nadedc) into the beaker, add 200mL of deionized water to the beaker, stir at room temperature for 30 minutes to dissolve it completely (the aqueous solution is colorless, clear and transparent) to obtain diethyldithiocarbamate Sodium thiocarbamate aqueous solution; 10mmol bismuth nitrate is added in another beaker, in this beaker, add 50mL deionized water, stir at room temperature and make it dissolve completely (milky white solution) for 15 minutes to obtain bismuth nitrate aqueous solution; Bismuth aqueous solution was added dropwise to sodium diethyldithiocarbamate aqueous solution (the solution began to turn yellow and turbid) at 1 drop / second (with a 5mL plastic pipette), and continued magnetic stirring at room temperature for 3 hours after the dropwise addition Completely react the raw materials; then suction-filter the suspension obtained from the sufficient reaction,...

Embodiment 1

[0045] (1) Place 0.05mmol copper acetylacetonate and 0.05mmol bismuth diethyldithiocarbamate in a round-bottomed flask, then add 4mL dodecanethiol (the molar concentration of copper acetylacetonate in the mixed solution is 12.5mmol at this time) / L), ultrasonic 15min, stirring 20min, obtain precursor solution;

[0046] (2) Preheat the precursor solution obtained in step (1) in a constant temperature oil bath at 230°C for 2 minutes, and then add 1 mL of oleylamine dropwise to the precursor solution at 1 drop / second (with a 5 mL plastic pipette). React for 6h, then cool to room temperature;

[0047] (3) The solution after the reaction is centrifuged, and the precipitate after discarding the supernatant is washed with normal hexane and centrifuged, repeating several times until the supernatant after the centrifugation is colorless and transparent, and the centrifuged precipitate Drying at 60°C is the final product.

[0048] Product composition, structure and morphology characte...

Embodiment 2

[0065] The difference from Example 1 is that the temperature of the constant temperature oil bath is 200° C., and the others are the same as in Example 1.

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Abstract

The invention discloses a preparation method of a two-dimensional sheet Cu3BiS3. The preparation method comprises the following steps: adopting cupric acetylacetonate and thiocarbamic bismuthate with the molar ratio of 1:1 as a copper source and a bismuth source, adopting 1-dodecanethiol as a ligand and a sulphur source, adopting oleylamine as an activating agent and a solvent, preheating a precursor solution, dropwise adding oleylamine slowly, reacting for a shorter period of time under a lower temperature, and performing centrifugation to prepare the two-dimensional sheet Cu3BiS3. The two-dimensional sheet Cu3BiS3 has a wittichenite structure with an orthorhombic system, a size of 2-4 [mu]m, a forbidden band width of 1.41 eV, and excellent photoelectric properties. The method is simple and controllable, the cost is low, the technological period is short, and the two-dimensional sheet Cu3BiS3 can be produced in batches.

Description

technical field [0001] The invention belongs to the field of photovoltaic materials, in particular to a two-dimensional flaky Cu 3 BY 3 method of preparation. Background technique [0002] In today's increasingly tense energy and severe environmental problems, the development of low-carbon and environmentally friendly new energy materials and the optimization of the performance of traditional materials have become the direction guide for future material science research. As an "inexhaustible and inexhaustible" energy source, solar energy has gradually entered people's lives. Silicon-based solar cells were once favored by people and considered to be the most promising solar cells. However, the production process of monocrystalline silicon and polycrystalline silicon will produce large environmental pollution and energy consumption, which is contrary to the low-carbon environmental protection requirements called by the current government. Thin-film solar cells are likely t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01G29/00
Inventor 邹超马亚辉张礼杰黄少铭杨云
Owner WENZHOU UNIVERSITY
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