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Preparation method for B-doped MoSe2 two-dimensional nanosheet with nano-array structure

A two-dimensional nano, nano array technology, applied in nanotechnology, chemical instruments and methods, electrodes, etc., can solve problems such as poor conductivity

Inactive Publication Date: 2017-11-21
LANZHOU UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The technical problem to be solved by the present invention is how to select the appropriate doping source and experimental conditions, for MoSe 2 Doping of B elements, and in order to solve MoSe 2 The problem of poor conductivity itself, the prepared B-doped MoSe 2 Nanomaterials do not contain other impurities, and make their catalytic effect in the hydrogen evolution catalytic reaction significantly improved

Method used

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  • Preparation method for B-doped MoSe2 two-dimensional nanosheet with nano-array structure
  • Preparation method for B-doped MoSe2 two-dimensional nanosheet with nano-array structure
  • Preparation method for B-doped MoSe2 two-dimensional nanosheet with nano-array structure

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Embodiment 1

[0028] A B-doped MoSe with nano-array structure 2 The preparation method of two-dimensional nanosheets, the specific preparation process is as follows: the carbon cloth is cut into a size of 1 cm×2 cm, soaked in anhydrous acetone for 10 min, and then taken out, cleaned with deionized water, and dried with a hair dryer. Then put it in absolute ethanol for 15 min, take it out for cleaning, dry it in alcohol and set aside.

[0029] 0.25 g MoO 2 powder and 0.1 g B 2 o 3 The powder was placed in the same porcelain boat, placed in the high temperature zone of the dual temperature zone tube furnace, and then 0.5 g Se powder was placed in another porcelain boat, placed in the low temperature zone of the tube furnace. Then, along the direction of the low-temperature zone-high-temperature zone, a carrier gas of 65 SCCM argon and 5 SCCM hydrogen mixed gas is passed at the same time. After the carrier gas was passed for 15 min, the temperature of the two temperature zones was raised s...

Embodiment 2

[0033] A B-doped MoSe with nano-array structure 2 The preparation method of two-dimensional nanosheets, the specific preparation process is as follows: cut the carbon cloth into a size of 1 cm×2 cm, soak it in anhydrous acetone for 5 min, take it out, wash it with deionized water, and dry it with a hair dryer. Then put it into absolute ethanol for 10 minutes of ultrasonication, take it out for cleaning, dry it in alcohol and set aside.

[0034] 0.25 g MoO 2 powder and 0.15 g B 2 o 3 The powder was placed in the same porcelain boat in the high temperature zone of the dual temperature zone tube furnace, and 0.5 g of Se powder was placed in another porcelain boat in the low temperature zone of the tube furnace. Then, along the direction of the low-temperature zone-high-temperature zone, a carrier gas of 78 SCCM of argon and 6 SCCM of hydrogen gas mixture is passed at the same time. After the carrier gas circulated for 15 min, the temperature of the two temperature zones was r...

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Abstract

The invention provides a preparation method for a B-doped MoSe2 two-dimensional nanosheet with a nano-array structure. The preparation method comprises the following concrete steps: a) separately putting carbon cloth in anhydrous acetone and absolute ethyl alcohol for ultrasonic cleaning; b) weighing MoO2 powder and Se powder, respectively putting the weighed MoO2 powder and Se powder in two porcelain boats, then weighting B2O3 powder, putting the weighed B2O3 powder in the porcelain boat filled with the MoO2 powder, mixing the B2O3 powder with the MoO2 powder, and hanging the cleaned carbon cloth on the porcelain boat filled with MoO2 powder; c) respectively putting the two porcelain boats into two temperature zones of a tubular furnace; and d) heating the two temperature zones of the tubular furnace, carrying out natural cooling to room temperature after completion of reactions, and taking out the carbon cloth. According to the invention, chemical vapor deposition is employed, and the mixed powder of B2O3 and MoO2 and the Se powder are used as precursors, so the B-doped MoSe2 two-dimensional nanosheet with the nano-array structure is allowed to grow on the carbon cloth; and the arrangement morphology of the nanosheet on a carbon cloth fiber can be adjusted by changing the temperature of the temperature zone where MoO2 is located, and the content of elemental B in the nanosheet can be changed by changing the usage amount of B2O3.

Description

technical field [0001] The invention belongs to the technical field of hydrogen evolution reaction catalytic electrode material preparation, in particular to B-doped MoSe on a carbon cloth substrate 2 Array preparation method of two-dimensional nanosheets. Background technique [0002] In recent years, hydrogen, as a new type of renewable clean energy, has received widespread attention, so the preparation and development of hydrogen energy has become a research hotspot. Among them, the electrolysis of water to generate hydrogen is a feasible and excellent method. In traditional electrolysis reactions, precious metal materials such as Pt are generally used as catalytic electrodes. The catalytic electrodes made of such materials have good performance and high hydrogen production. However, due to the high cost, this electrode cannot be adapted to large-scale industrial production and market demand. Therefore, researchers are constantly looking for new materials that are abun...

Claims

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Application Information

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IPC IPC(8): C01G39/00B82Y40/00C25B11/06C25B1/04
CPCB82Y40/00C01G39/00C01P2002/72C01P2002/82C01P2002/85C01P2004/03C01P2004/04C01P2004/20C25B1/04C25B11/04Y02E60/36
Inventor 高大强夏宝瑞
Owner LANZHOU UNIVERSITY
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