A kind of mo/ni/co/p/c composite material and its preparation method and application

Abstract

The invention belongs to the technical field of composite materials, and particularly relates to an Mo / Ni / Co / P / C composite material as well as a preparation method and an application thereof. The material is prepared with the following method: in a three-electrode system, a carbon-based substrate taken as a working electrode, a platinum net taken as an auxiliary electrode and Ag / AgCl taken as a reference electrode are connected with an electrochemical workstation, potentiostatic deposition is conducted in a mixed solution of nickel sulfate with concentration of 30-70 g / L, sodium hypophosphitewith concentration of 20-40 g / L, nickel chloride with concentration of 10-20 g / L, boric acid with concentration of 30-35 g / L, cobalt chloride with concentration of 30-50 g / L and sodium molybdate withconcentration of 40-50 g / L, magnetic stirring is conducted throughout the deposition process, initial potential set on the working electrode during electroplating is (-1.5)V-(-1)V, electroplating timeis 5-30 min, electroplating temperature is set to be 25-35 DEG C, a power supply is turned off finally, and the Mo / Ni / Co / P / C composite material is prepared. The Mo / Ni / Co / P / C composite material is taken as a cathode material of a microbial electrolytic cell to treat coking wastewater and produce hydrogen synchronously, waste is changed into treasure, and a new idea and a new perspective are provided for impending coking wastewater treatment.

Description

technical field [0001] The invention belongs to the technical field of composite materials, in particular to a Mo / Ni / Co / P / C composite material and its preparation method and application. Background technique [0002] Energy is considered the lifeline of the times. In order to meet the world's energy needs, non-renewable energy sources such as coal, oil and natural gas have been overused, and the depletion of natural resources has accelerated rapidly. People are eagerly looking for green and renewable energy that can replace fossil energy. Hydrogen is favored because of its advantages of high calorific value, high thermal efficiency, and no environmental pollution. Microbial electrolysis cell (MEC) hydrogen production technology has become a frontier topic and hotspot of research at home and abroad because of its unique advantages of low energy consumption, high efficiency, clean and environmental protection. Due to the global energy shortage and the increasingly serious p...

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Problems solved by technology

The patent (CN105903483A) studies the preparation of molybdenum disulfide-nickel phosphorus composite material. The composite material has excellent lubrication, wear resistance and corrosion resistance. It has excellent electrocatalytic hydrogen evolution performance and good reusability. duration

The patent (CN103290425A) studies the use of domesticated microorganisms as the cathode material of MEC, but it has the disadvantages of cumbersome domestication operation of cathode and anode microorganisms, long domestication period and difficult activity control, which cannot ensure stable and efficient hydrogen production effect

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