Method for preparing grapheme platinum nanocomposite material by using argon plasma

A composite material and plasma technology, which is applied in the field of preparing graphene-platinum nano-composite materials by ions, can solve the problems of time and energy consumption, introduction of impurities, complicated process, etc., and achieve shortened preparation time, simplified process, and good electrocatalytic performance Effect

CN102698741AActive Publication Date: 2012-10-03INST OF PLASMA PHYSICS CHINESE ACAD OF SCI
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Publication Date
2012-10-03

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Abstract

The invention discloses a method for preparing grapheme platinum nanocomposite material by using argon plasma. The method comprises the steps of: putting graphene oxide into a beaker, then adding chloroplatinic acid, drying the obtained mixture, then putting the mixture into a sealed container, wherein the container is connected with a graphite electrode, the electrode is connected with alternating current power supply, and the power supply can generate an inductive coupling plasma source; introducing argon into the container, removing air, then opening a vacuum pump to vacuumize until the vacuum degree is about 3Pa; opening the alternating current power supply to generate the argon plasma, enabling the plasma flow directly to act on the surface of the dried powder for 28-32 minutes, fully washing, filtering and drying the reaction product by deionized water and proper organic solvent to prepare the grapheme platinum nanocomposite material. According to the method, not only can uniformly distributed grapheme platinum nanocomposite material be prepared effectively, but also the preparation time is shortened greatly, and the process is simplified.
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Description

technical field

[0001] The invention relates to the field of a preparation method of a catalyst, in particular to a method for preparing a graphene-platinum nanocomposite material with argon plasma. Background technique

[0002] With the rapid development of economy and technology, the energy, fuel and environmental problems faced by all countries in the world are becoming increasingly severe. Due to the advantages of light weight, simple structure, high energy conversion efficiency, no pollution to the environment, and rich and diverse fuel sources, fuel cells are known as environmentally friendly green energy in the 21st century, and they have great development potential and application prospects. It is well known that the cost and performance of low-temperature fuel cell catalysts determine its development level and commercialization process. Its catalyst is still based on platinum-group noble metals, but platinum-group metals have problems such as high price, limited re...

Examples

Embodiment 1

[0026] A method for preparing graphene-platinum nanocomposites with argon plasma, comprising the following steps:

[0027] A. Put 50mg of graphene oxide into a beaker, then add 2ml of 1 mol.L -1 The chloroplatinic acid, the mixture of gained is placed in oven and dried at 60 DEG C to obtain the powder of drying;

[0028] B. Place the dried powder in an airtight container (see figure 1 ), the container is connected with a graphite electrode, and the electrode is connected to an AC power supply, which can generate an inductively coupled plasma source, and then first pass argon gas into the container to drive away the air, and then turn on the vacuum pump to evacuate to 3Pa, and then turn on the AC The power supply generates argon plasma, and the plasma flow is directly applied to the surface of the dried powder for 30 minutes. After the discharge is completed, the reaction product is fully washed with deionized water or an appropriate organic solvent, filtered, and dried at 60°...