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Rhenium disulfide nanosheet used for hydrogen evolution reaction, and preparation method and applications thereof

A technology for rhenium disulfide and hydrogen evolution reaction, which is applied in the field of nanomaterials and can solve the problems of non-conductivity of substrates and limited applications.

Inactive Publication Date: 2019-11-19
GUANGDONG UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although it has also been reported that the erection of ReS 2 The preparation of nanosheets, but the substrate used is not conductive, transparent (such as SiO 2 substrate), limiting its application in photocatalytic hydrogen evolution

Method used

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  • Rhenium disulfide nanosheet used for hydrogen evolution reaction, and preparation method and applications thereof
  • Rhenium disulfide nanosheet used for hydrogen evolution reaction, and preparation method and applications thereof
  • Rhenium disulfide nanosheet used for hydrogen evolution reaction, and preparation method and applications thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] 1. Preparation:

[0039] (1) Weigh 50mg of Re and 200mg of Te into a corundum boat and mix evenly, place in temperature zone Ⅰ.

[0040] (2) Weigh 0.6g of sulfur powder into a quartz boat, place it at the upstream end of the CVD furnace and install a heating belt at the position of the sulfur powder to control the temperature of sulfur alone, and the temperature control area is temperature zone II.

[0041] (3) Place the cleaned FTO conductive glass face down on the corundum boat.

[0042] (4) 200 sccm high-purity argon gas was introduced for 4 hours to fully replace the air in the CVD furnace tube, and then the flow rate of the carrier gas was adjusted to 50 sccm.

[0043] (5) CVD furnace temperature zone Ⅰ is heated to 475 ℃ at a rate of 15 ℃ / min, and the temperature is kept constant for 45 minutes. 150°C, constant temperature for 45min, then naturally cooled to room temperature, and the reaction was completed, and vertically aligned rhenium disulfide nanosheets wer...

Embodiment 2

[0046] 1. Preparation:

[0047] (1) Weigh 50mg of Re and 200mg of Te into a corundum boat and mix evenly, place in temperature zone Ⅰ.

[0048] (2) Weigh 0.6g of sulfur powder into a quartz boat, place it at the upstream end of the CVD furnace and install a heating belt at the position of the sulfur powder to control the temperature of sulfur alone, and the temperature control area is temperature zone II.

[0049] (3) Place the cleaned FTO conductive glass face down on the corundum boat.

[0050] (4) 200 sccm high-purity argon gas was introduced for 4 hours to fully replace the air in the CVD furnace tube, and then the flow rate of the carrier gas was adjusted to 50 sccm.

[0051] (5) CVD furnace temperature zone Ⅰ is heated to 500 ℃ at a rate of 10 ℃ / min, and the temperature is kept constant for 30 minutes. 170°C, constant temperature for 30min, then naturally cooled to room temperature, and the reaction was completed, and vertically aligned rhenium disulfide nanosheets wer...

Embodiment 3

[0054] 1. Preparation:

[0055] (1) Weigh 50mg of Re and 200mg of Te into a corundum boat and mix evenly, place in temperature zone Ⅰ.

[0056] (2) Weigh 0.6g of sulfur powder into a quartz boat, place it at the upstream end of the CVD furnace and install a heating belt at the position of the sulfur powder to control the temperature of sulfur alone, and the temperature control area is temperature zone II.

[0057] (3) Place the cleaned FTO conductive glass face down on the corundum boat.

[0058] (4) 200 sccm high-purity argon gas was introduced for 4 hours to fully replace the air in the CVD furnace tube, and then the flow rate of the carrier gas was adjusted to 50 sccm.

[0059] (5) CVD furnace temperature zone Ⅰ is heated to 450 ℃ at a rate of 20 ℃ / min, and the temperature is kept constant for 45 minutes. 120°C, constant temperature for 45min, then naturally cooled to room temperature, the reaction was completed, and anisotropically grown on the FTO substrate to prepare v...

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Abstract

The invention belongs to the technical field of nanometer material, and discloses a rhenium disulfide nanosheet used for hydrogen evolution reaction, and a preparation method and applications thereof.According to the preparation method, Re-Te co-molten alloy and sulfur powder are taken as raw materials, FTO electro-conductive glass is taken as a substrate, chemical vapor deposition is adopted, atinert atmosphere, the Re-Te co-molten alloy is introduced into a quartz tube, is heated to 450 to 500 DEG C in a constant temperature zone I for thermal insulation treatment; the sulfur powder is placed on a carrier gas upstream end of the same quartz tube, and is heated to 120 to 170 DEG C in a constant temperature zone II for thermal insulation treatment, so that Re steam in the Re-Te co-moltenalloy and sulfur steam are reacted, and anisotropic growth on the FTO substrate is realized to obtain a finished product. According to the rhenium disulfide nanosheet, ReS2 nanosheets are verticallyarranged on the FTO substrate, the edges of the ReS2 nanosheets possess a large amount of electrochemical active sites for combination with the FTO substrate, the rhenium disulfide nanosheet can be taken as a hydrogen evolution reaction electrode, and is promising to be used in catalytic hydrogen production field.

Description

technical field [0001] The invention belongs to the technical field of nanomaterials, and more specifically relates to a rhenium disulfide nanosheet for hydrogen evolution reaction and its preparation method and application. Background technique [0002] In recent years, people have begun to pay attention to transition metal chalcogenide (TMDC) two-dimensional materials, which are composed of two-dimensional molecular layers stacked through weak interlayer interactions, and the layers interact through weak van der Waals forces, which are easy to form Sheet-like structure with extremely thin thickness. TMDC two-dimensional materials also have the characteristics of high carrier mobility, good chemical stability, photosensitivity and mechanical flexibility. In addition, it has been found that TMDC materials have potential applications in the field of catalysts, such as electrochemical catalytic hydrogen production, photocatalytic hydrogen production, etc. 2D ReS 2 As a memb...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C03C17/34C01B3/02
CPCC01B3/02C03C17/347C03C2217/241C03C2217/288C03C2217/71C03C2218/152
Inventor 郭宗亮魏爱香余代者招瑜肖志明刘俊
Owner GUANGDONG UNIV OF TECH
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