Preparation method of nitrogen and phosphorus co-doped graphene/cobalt phosphide nanosheet array catalyst

Abstract

The invention belongs to the technical field of catalyst preparation, and particularly relates to a preparation method of a nitrogen-phosphorus co-doped graphene / cobalt phosphide nanosheet array catalyst, which specifically comprises the following steps: S1, adding citric acid, urea and graphene oxide into a dispersion medium to prepare a uniform suspension; adding pretreated carbon cloth into the suspension, and carrying out a hydrothermal reaction at 150-200 DEG C to prepare a nitrogen-doped graphene array precursor; s2, loading soluble cobalt salt onto the nitrogen-doped graphene array precursor prepared in the S1, and carrying out phosphating annealing treatment on the nitrogen-doped graphene array precursor and a phosphorus source at 200-500 DEG C in a reducing gas atmosphere to prepare a nitrogen-phosphorus co-doped graphene / cobalt phosphide nanosheet array catalyst; the method is low in raw material price, short in preparation period, simple in method, simple in required equipment and suitable for large-scale production.

Description

technical field [0001] The invention belongs to the technical field of catalyst preparation, and in particular relates to a preparation method of a nitrogen-phosphorus co-doped graphene / cobalt phosphide nanosheet array catalyst. Background technique [0002] With the massive consumption of fossil fuels, severe environmental problems and energy problems are brought about, so the development of clean, environmentally friendly and renewable energy is imminent. Hydrogen energy has the advantages of high energy density, clean products, and high combustion calorific value, and is considered to be an ideal substitute for traditional fossil fuels. Among the many preparation methods, electrolysis of water for hydrogen production is simple and the product is clean. It is a way to obtain efficient hydrogen, but its reaction kinetics is slow and requires a high potential, and the preparation process consumes additional energy, so it is highly active. The addition of catalyst is the key...

AI Technical Summary

Problems solved by technology

[0003] There are many methods for preparing nitrogen and phosphorus co-doped graphene composite cobalt phosphide porous nanosheet array catalysts, the most widely used method is chemical vapor deposition, which uses metal precursors and phosphorus sources as raw materials and undergoes annealing to obtain Transition metal phosphide catalyst, but the preparation process of the above-mentioned method is loaded down with trivial details, and raw material price is expensive

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