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MoS2/MoO2/Ru composite material as well as preparation method and application thereof

A composite material, H2O2 technology, applied in chemical instruments and methods, chemical/physical processes, physical/chemical process catalysts, etc., can solve problems such as high energy consumption, carbon dioxide emissions, etc., achieve high yield, easy operation, and simple reaction conditions Effect

Active Publication Date: 2020-07-31
ZHENGZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, more than 95% of the hydrogen comes from coal gasification or steam methane reforming, which results in high energy consumption and large CO2 emissions

Method used

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  • MoS2/MoO2/Ru composite material as well as preparation method and application thereof
  • MoS2/MoO2/Ru composite material as well as preparation method and application thereof
  • MoS2/MoO2/Ru composite material as well as preparation method and application thereof

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Experimental program
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Effect test

Embodiment 1

[0026] A kind of MoS 2 / MoO 2 The preparation method of / Ru composite material, step is as follows:

[0027] (1) Nano-MoS 2 Preparation of:

[0028] Using ammonium molybdate tetrahydrate and thiourea as raw materials to prepare 3D flower-like nano molybdenum disulfide: 0.2 g PVP (K-30) was dissolved in 100 ml deionized water, 1.22 g (NH 4 ) 6 Mo 7 o 24 4H 2 O and 1.78 g NH 2 CSNH 2 Add it to the above solution, stir for 30 min to obtain a clear solution; transfer the solution to a 200 ml autoclave, react at 200 °C for 24 h, after cooling, centrifuge to separate the precipitate, and wash it three times alternately with ethanol and deionized water , put the product in a vacuum drying oven at 60 °C and dry for 12 h to obtain 3D flower-like nanomolybdenum disulfide;

[0029] (2), MoS 2 / RuO 2 Preparation of composite materials:

[0030] Take 0.2 g of MoS prepared in step (1) 2 Disperse into 40 ml of deionized water, sonicate for 3 h under ice bath conditions, then pla...

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Abstract

The invention belongs to the technical field of electrocatalytic hydrogen production, and discloses a MoS2 / MoO2 / Ru composite material as well as a preparation method and application thereof. The method comprises: adding nano MoS2 into water, ultrasonically dispersing uniformly under an ice bath condition, and then putting the ultrasonically dispersed mixed solution into a cell disruptor for ultrasonic treatment for at least 30 minutes; sequentially adding water-soluble Ru salt and H2O2 with the concentration of 4-6 wt% into the obtained mixed solution, uniformly stirring, controlling the temperature to be 80-95 DEG C, reacting for 4-6 hours, centrifuging, washing and drying to obtain a MoS2 / RuO2 composite material; and fully and uniformly grinding the prepared MoS2 / RuO2 composite material,calcining the MoS2 / RuO2 composite material for 3-6 hours at 400-800 DEG C in N2 gas or inert atmosphere, and naturally cooling to room temperature to obtain the MoS2 / MoO2 / Ru composite material. The disclosed composite material is used as a catalyst for an electrocatalytic hydrogen evolution reaction. The MoS2 / MoO2 / Ru composite material prepared by the method disclosed by the invention has uniformmorphology and excellent electrocatalytic performance, and meanwhile, in the preparation process, the reaction conditions are simple, the operation is easy, the yield is high, and the industrial production is easy.

Description

technical field [0001] The invention belongs to the technical field of electrocatalytic hydrogen production, and in particular relates to a MoS 2 / MoO 2 / Ru composite materials and their preparation methods and applications. Background technique [0002] Hydrogen energy has attracted widespread attention as a competitive clean energy candidate. In addition to this, more than 60 million tons of hydrogen are used every year for different industrial purposes involving ammonia production, hydrocracking and refining of fossil fuels. However, more than 95% of the hydrogen comes from coal gasification or steam methane reforming, which results in high energy consumption and large carbon dioxide emissions. Electrochemical water splitting is a more sustainable way to produce hydrogen, and electrical energy can then be stored in the hydrogen's chemical bonds, offering a better way to harness low-cost electricity from existing renewable sources. The core of the hydrogen evolution re...

Claims

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Application Information

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IPC IPC(8): B01J27/051C25B1/04C25B11/08
CPCB01J27/0515C25B1/04C25B11/093B01J35/33Y02E60/36
Inventor 刘玉山蔡佳琳吕华伦谢鑫黄玉明李勇盛范云霄刘乐妍丁洁
Owner ZHENGZHOU UNIV
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