Method for synthesizing PdPt/graphene nano electrical catalyst in one step by microwave process
An electrocatalyst and graphene technology, applied in the direction of physical/chemical process catalysts, chemical instruments and methods, metal/metal oxide/metal hydroxide catalysts, etc., can solve problems such as long time and complexity, and achieve improved efficiency, Improve the effect of uniform distribution and outstanding mechanical properties
Inactive Publication Date: 2011-08-17
NANJING NORMAL UNIVERSITY
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The above method is more complicated and takes a long time
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Abstract
The invention discloses a method for synthesizing a PdPt / graphene nano electrical catalyst in one step by a microwave process, which comprises: dispersing graphene oxide in aqueous solution of quaternary ammonium salt surfactant through ultrasonic waves, adding solution of a soluble Pd II salt or PtII salt, fully and uniformly mixing, regulating the pH value of mixed solution, adding a reducer, uniformly mixing, reacting under radiation of microwaves to reduce palladium and platinum metal ions and graphene oxide, and cooling, washing and drying the reactants to obtain the PdPt / graphene nano electrical catalyst. The method has the characteristics of energy conservation, environmental protection, quickness, simple process and the like. The obtained PdPt / graphene nano electrical catalyst hasa high electric catalysis performance for the electrochemical oxidization of methanol.
Description
technical field [0001] The invention relates to a preparation method of a nanometer material, in particular to a preparation method of a PdPt / graphene nanometer electrocatalyst, and belongs to the technical field of nanocatalyst preparation and the technical field of electrochemical energy. Background technique [0002] In direct methanol fuel cells ( DMFC ), the anode catalysts commonly used are carbon-supported Pt-based catalysts. However, the price of metal Pt is expensive, and the intermediate products of methanol oxidation (mainly CO, etc.) are easy to poison it, resulting in a decrease in the activity of the catalyst (Lamy C, Lima A, LeRhun V, Delime F, Coutanceau C, Léger JM. J . Power Sources 2002, 105, 283.). In order to overcome the above shortcomings, many studies have introduced other metals and platinum to form bimetallic catalysts to alleviate the CO poisoning phenomenon, thereby improving the utilization rate of Pt and the performance of the catalyst. The Pd...
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Login to View More IPC IPC(8): B01J23/44B01J37/34B01J37/16H01M4/92B82Y40/00
CPCY02E60/50
Inventor 张卉蔡称心吴萍
Owner NANJING NORMAL UNIVERSITY
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