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Method for preparing spherical In2S3 nanometer materials by aid of ionic liquid

A nanomaterial and ionic liquid technology, applied in the field of material chemistry, achieves the effect of simple preparation method, wide application range and perfect product appearance

Inactive Publication Date: 2016-06-22
XUCHANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The problem to be solved by the present invention is: to overcome the current preparation of In 2 S 3 Relying on biomolecules as templates or using expensive organoindium compounds as starting materials, Na 2 S·9H 2 O is easy to hydrolyze and other disadvantages

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  • Method for preparing spherical In2S3 nanometer materials by aid of ionic liquid
  • Method for preparing spherical In2S3 nanometer materials by aid of ionic liquid
  • Method for preparing spherical In2S3 nanometer materials by aid of ionic liquid

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preparation example Construction

[0032] Curd In 2 S 3 The preparation method of nanomaterials, using ionic liquid aqueous solution as medium, adopts hydrothermal method to synthesize In with a diameter of about 2 μm 2 S 3 Microspheres are assembled from nano-sheets with a thickness of about 20nm, and the thickness of the nano-sheets is highly uniform. The ionic liquid of the present invention assists in the preparation of curdled In 2 S 3 The method for nanomaterials, the concrete steps of its preparation are:

[0033] (1) Add water to the container, and then add In(NO 3 ) 3 4.5H 2 O, thioacetamide and ionic liquid, the mass range of adding ionic liquid is 2.5g~7g. Stir the mixed solution evenly;

[0034] (2) Put the container at 160°C to react for a period of time, the reaction time ranges from 12h to 96h, after the reaction is completed, the flower-shaped In 2 S 3 nanomaterials;

[0035] (3) Naturally cool to room temperature, and the obtained precipitates are repeatedly washed by ultrasonic cen...

Embodiment 1

[0043] 1. Preparation: wash the polytetrafluoroethylene reaction kettle (volume 100mL) with tap water and distilled water for 3 times respectively, and dry it for later use;

[0044] 2. Reaction steps: Add 50 mL of water to the reaction kettle treated in step 1, and then add 0.4 mmolIn(NO 3 ) 3 4.5H 2 O, 1.6 mmol thioacetamide and 7.5 g of [Bmim] BF 4 . After stirring the above solution evenly, put it into the reaction kettle and react at 160°C for 48h;

[0045] 3. Post-treatment: after the reaction is finished, then naturally cool to room temperature. The obtained precipitates were washed with distilled water and absolute ethanol several times by ultrasonic centrifugation, and dried in vacuum at 60°C for 8 hours. Then carefully transfer to a sample tube and store in a dark, dry environment. The appearance of the product is uniform yellow, and it is determined by X-ray powder diffractometer (XRD) that there is only In 2 S 3 , no impurity, XRD pattern see Picture 1-1 ....

Embodiment 2

[0047] 1, preparatory work: with embodiment 1;

[0048] 2. Reaction steps: add 50mL water to the reaction kettle treated in step 1, then add 0.4mmolIn(NO 3 ) 3 4.5H 2 O, 1.6 mmol thioacetamide and 5 g of [Bmim] BF 4 . After stirring the above solution evenly, put it into the reaction kettle and react at 160°C for 48h;

[0049] 3, aftertreatment: with embodiment 1. The appearance of the product is uniform yellow, and the XRD spectrum is shown in Picture 1-1 , field emission scanning electron micrographs see Figure 2-2 .

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Abstract

An ionic liquid-assisted method for preparing curdled In2S3 nanomaterials. Add a certain amount of water into the liner of the polytetrafluoroethylene high-pressure reactor, and then add an appropriate amount of In(NO 3 ) 3 4.5H 2 O, Thioacetamide and 1-butyl-3-methylimidazolium tetrafluoroborate [Bmim]BF 4 ionic liquid. After stirring evenly, put it into a reaction kettle, react at 160°C for a period of time, and then cool naturally to room temperature. The obtained precipitates were ultrasonically washed with distilled water and absolute ethanol several times, and dried in vacuum at 60°C for 8 hours. The method uses an aqueous solution of an ionic liquid as a reaction medium, and belongs to an environment-friendly reaction. The method is simple to operate, has no pollution to the environment, has good repeatability, and the crystal form and shape of the obtained microsphere material are perfect, and has certain application value.

Description

Technical field: [0001] The invention belongs to the technical field of material chemistry, in particular to ionic liquid-assisted preparation of curdled In 2 S 3 Chemistry of Nanomaterials. Background technique: [0002] In 2 S 3 It is an important class of n-type semiconductor materials and a typical III-VI group sulfide. It has potential application prospects in the fields of luminescence, photoconductivity, photoelectricity and photocatalysis. The unique physical and chemical properties of indium sulfide not only depend on its phase, but also largely depend on its morphology, size and organizational structure. Regulation In 2 S 3 The morphology of the material is of great significance for the development of practical applications of the material. So far, researchers have synthesized In 2 S 3 The morphology includes particles, nanowires, nanotubes, nanospheres, nanosheets, and nanorods. Despite some progress, the regulation of three-dimensional In 2 S 3 The mo...

Claims

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Application Information

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IPC IPC(8): C01G15/00B82Y40/00
CPCC01G15/00C01P2002/72C01P2004/03C01P2004/24C01P2004/32C01P2004/50C01P2004/61
Inventor 郭丽丽武小满高远浩侯珂珂王晓丹张洪浩陈新华
Owner XUCHANG UNIV
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