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Preparation method and application of rhenium disulfide nanoflake

A rhenium disulfide and nanosheet technology, which is applied in the field of preparation of single-layer and/or few-layer rhenium disulfide nanosheets, can solve the problems of high cost and harsh reaction conditions, and achieve low cost, high reactivity and low price Effect

Inactive Publication Date: 2018-09-04
CENT SOUTH UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In the prior art, if single-layer or few-layer rhenium disulfide nanosheets with high specific surface area, strong adsorption capacity, and high reactivity are to be obtained, it is necessary to make the multi-layer rhenium disulfide layer by chemical vapor deposition or chemical liquid phase exfoliation. Stripping between them, the reaction conditions are harsh and the cost is high

Method used

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  • Preparation method and application of rhenium disulfide nanoflake
  • Preparation method and application of rhenium disulfide nanoflake
  • Preparation method and application of rhenium disulfide nanoflake

Examples

Experimental program
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Effect test

Embodiment 1

[0046] 0.5000g ammonium rhenate ((NH 4 ) 2 ReO 4 ) and 0.5400g sodium ethyl xanthate (C 3 h 5 OS 2 Na) were dissolved in 30mL deionized water respectively, and after being completely dissolved, the (NH 4 ) 2 ReO 4 The pH of the solution was adjusted to 7.00, after which the C 3 h 5 OS 2Na solution was added to it and mixed evenly. The mixture was transferred to a 100mL autoclave, sealed, placed in an oven at 200°C for 8 hours, and cooled to room temperature naturally. After the reaction product is separated, it is washed with deionized water and absolute ethanol several times, collected and vacuum freeze-dried to obtain a black powder product, which is rhenium disulfide material. Among them, ammonium rhenate is almost quantitatively converted to rhenium disulfide.

[0047] figure 1 The field emission scanning electron microscope (FESEM) picture of the rhenium disulfide material prepared for this embodiment, from figure 1 It can be seen that it is composed of many...

Embodiment 2

[0049] 0.5000g ammonium rhenate ((NH 4 ) 2 ReO 4 ) and 0.5400g sodium ethyl xanthate (C 3 h 5 OS 2 Na) were dissolved in 30mL deionized water respectively, and after being completely dissolved, C 3 h 5 OS 2 Na solution was added (NH 4 ) 2 ReO 4 solution, mix the two evenly. The mixture was transferred to a 100mL autoclave, sealed, placed in an oven at 200°C for 10h, and cooled to room temperature naturally. After the reaction product is separated, it is washed with deionized water and absolute ethanol several times, collected and vacuum freeze-dried to obtain a black powder product, which is rhenium disulfide material. Among them, ammonium rhenate is almost quantitatively converted to rhenium disulfide.

Embodiment 3

[0051] 0.5000g ammonium rhenate ((NH 4 ) 2 ReO 4 ) and 0.5400g sodium ethyl xanthate (C 3 h 5 OS 2 Na) were dissolved in water respectively, and after being completely dissolved, the (NH 4 ) 2 ReO 4 The pH of the solution was adjusted to 9.00, after which the C 3 h 5 OS 2 Na solution was added to it and mixed evenly. The mixture was transferred to a 100mL autoclave, sealed, placed in an oven at 190°C for 12h, and cooled to room temperature naturally. After the reaction product is separated, it is washed with deionized water and absolute ethanol several times, collected and vacuum freeze-dried to obtain a black powder product, which is rhenium disulfide material. Among them, ammonium rhenate is almost quantitatively converted to rhenium disulfide.

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Abstract

The invention discloses a preparation method and application of a rhenium disulfide nanoflake. A single-layer and / or few-layer disulfide nanoflake is prepared by mixing a rhenium source with xanthateand carrying out hydrothermal reaction. The method is characterized in that the large-scale commercially-produced xanthate is selected as a sulfur source; the method has good repeatability and low cost, and can be used for preparing the single-layer and / or few-layer disulfide nanoflake. The nanoflake can be applied to the fields of adsorption, photocatalysis, photodegradation, lubrication, photoelectronic devices and the like.

Description

technical field [0001] The invention belongs to the technical field of nanomaterial preparation, and in particular relates to a method for preparing single-layer and / or few-layer rhenium disulfide nanosheets. Background technique [0002] Nanomaterials have excellent properties and are widely used in scientific research and engineering fields. Rhenium disulfide (ReS 2 ) The interlayer interaction in the nanomaterial structure is weak, and single-layer or few-layer rhenium disulfide has the characteristics of large specific surface area, strong adsorption capacity, and high reactivity, making it widely used in the fields of adsorption, photocatalysis, electronic devices, and energy storage materials. application. At present, the preparation methods of rhenium disulfide materials include chemical vapor deposition, chemical liquid phase exfoliation and hydrothermal method. [0003] Elementary rhenium, rhenium chloride and other rhenium sources are commonly used in chemical v...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01G47/00B01J20/02C02F1/28B82Y40/00C02F101/34
CPCB01J20/0222B01J20/0285C01G47/00C01P2002/72C01P2002/82C01P2002/85C01P2004/03C01P2004/04C01P2004/20C01P2004/64C02F1/281C02F2101/34C02F2101/40
Inventor 刘可木张占飞刘广义
Owner CENT SOUTH UNIV
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