Preparation method of platinum/molybdenum disulfide nanosheet/graphene three-dimensional composite electrode catalyst

An electrode catalyst, molybdenum disulfide technology, applied in the direction of physical/chemical process catalysts, chemical instruments and methods, electrodes, etc., to achieve the effects of good stability, high catalytic activity, good application prospects and economic benefits

Active Publication Date: 2017-11-10
北京三川烯能科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, there is no report on the use of graphene and molybdenum disulfide nanosheets to construct a three-dimensional composite carrier and load platinum nanoparticles on it.

Method used

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  • Preparation method of platinum/molybdenum disulfide nanosheet/graphene three-dimensional composite electrode catalyst
  • Preparation method of platinum/molybdenum disulfide nanosheet/graphene three-dimensional composite electrode catalyst
  • Preparation method of platinum/molybdenum disulfide nanosheet/graphene three-dimensional composite electrode catalyst

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preparation example Construction

[0027] Such as figure 1 Shown, the present invention provides a kind of preparation method of platinum / molybdenum disulfide nanosheet / graphene three-dimensional composite electrode catalyst, comprises the following steps:

[0028] Step 1: ultrasonically disperse the molybdenum disulfide nanosheets in a mixed solution of ethylene glycol and isopropanol to obtain a dispersion of molybdenum disulfide nanosheets; the ultrasonic time is 0.5-6 hours, the ultrasonic temperature is 0°C-60°C, and the The concentration of molybdenum nanosheet dispersion is 0.1g / L-5g / L.

[0029] Step 2, adding graphite oxide to the molybdenum disulfide nanosheet dispersion in step 1 and performing ultrasonic treatment to obtain a molybdenum disulfide nanosheet / graphene oxide binary composite solution; the mass ratio of graphite oxide added to molybdenum disulfide 1:20–20:1, ultrasonic time 0.5–6 hours, ultrasonic temperature 0°C–60°C.

[0030] Step 3, adding potassium chloroplatinite solution to the mo...

Embodiment 1

[0035] Step 1: ultrasonically disperse the molybdenum disulfide nanosheets in a mixed solution of ethylene glycol and isopropanol to obtain a molybdenum disulfide nanosheet dispersion; the ultrasonic time is 0.5 hours, the ultrasonic temperature is 0°C, and the molybdenum disulfide nanosheet dispersion is The concentration is 0.1g / L.

[0036] Step 2, adding graphite oxide to the molybdenum disulfide nanosheet dispersion in step 1 and performing ultrasonic treatment to obtain a molybdenum disulfide nanosheet / graphene oxide binary composite solution; the mass ratio of graphite oxide added to molybdenum disulfide The ratio is 1:20, the ultrasonic time is 0.5 hour, and the ultrasonic temperature is 0°C.

[0037] Step 3, adding potassium chloroplatinite solution to the molybdenum disulfide nanosheet / graphene oxide binary composite solution in step 2, and using magnetic stirring to mix the system evenly to obtain potassium chloroplatinite / molybdenum disulfide nanosheet / graphene ox...

Embodiment 2

[0042] Step 1: ultrasonically disperse the molybdenum disulfide nanosheets in a mixed solution of ethylene glycol and isopropanol to obtain a molybdenum disulfide nanosheet dispersion; the ultrasonic time is 1 hour, the ultrasonic temperature is 20°C, and the molybdenum disulfide nanosheet dispersion is The concentration is 1.67g / L.

[0043] Step 2, adding graphite oxide to the molybdenum disulfide nanosheet dispersion in step 1 and performing ultrasonic treatment to obtain a molybdenum disulfide nanosheet / graphene oxide binary composite solution; the mass ratio of graphite oxide added to molybdenum disulfide The ratio is 1:1, the ultrasonic time is 1 hour, and the ultrasonic temperature is 20°C.

[0044] Step 3, adding potassium chloroplatinite solution to the molybdenum disulfide nanosheet / graphene oxide binary composite solution in step 2, and using magnetic stirring to mix the system evenly to obtain potassium chloroplatinite / molybdenum disulfide nanosheet / graphene oxide...

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Abstract

The invention provides a preparation method of a platinum / molybdenum disulfide nanosheet / graphene three-dimensional composite electrode catalyst. The preparation method comprises the following steps: ultrasonically dispersing molybdenum disulfide nanosheets in isopropanol and glycol, adding graphite oxide, carrying out ultrasonic treatment, adding a platinum salt solution, and magnetically stirring all above substances to fully mix the substances; and transferring the above obtained mixture into a hydrothermal kettle, carrying out a reaction to obtain a hydrogel-shaped product, carrying out dialysis water washing treatment, and freeze-drying the obtained product to remove water in order to obtain the platinum / molybdenum disulfide nanosheet / graphene three-dimensional composite electrode catalyst. The platinum / molybdenum disulfide nanosheet / graphene three-dimensional composite electrode catalyst prepared through using the preparation method has a good application prospect and a good economic benefit in the fields of electrocatalytic hydrogen production and fuel cells.

Description

technical field [0001] The invention relates to a preparation method of an electrode catalyst, in particular to a preparation method of a platinum / molybdenum disulfide nanosheet / graphene three-dimensional composite electrode catalyst. Background technique [0002] Facing the ever-intensifying energy crisis and environmental pollution, environmental protection, energy conservation and emission reduction have become important issues facing society today. The development and utilization of efficient and clean energy is of great significance to the sustainable development of society. Electrocatalytic hydrogen production and direct methanol fuel cells are new energy technologies with great application prospects. Their promotion and use can not only effectively alleviate the current social and economic dependence on fossil fuels, but also greatly reduce the impact on the ecological environment in the process of energy production and consumption. damage caused. A large number of ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J27/051B01J21/18C25B11/03C25B11/08C25B1/02
CPCB01J21/18B01J27/0515C25B1/02C25B11/031C25B11/081
Inventor 黄华杰高治强李苗苗
Owner 北京三川烯能科技有限公司
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