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Preparation Of N-Doped Three-Dimensional Orderly Macro-Mesoporous Carbon Material (3DOMMC) And Study On Their Activity In Hydrogen Evolution Reaction

Posted on:2023-11-17Degree:MasterType:Thesis
Country:ChinaCandidate:J ZhangFull Text:PDF
GTID:2531307163995899Subject:Chemical Engineering and Technology
Abstract/Summary:
In recent years,hydrogen energy as a clean and reproduced source,has gradually become an alternative to fossil fuels.And it has attracted attention deeply from researchers.Significantly,the electrolytic water hydrogen production technology emerges from lots of hydrogen production ways because of the advantages of simple equipment,nonpolluting and rich source of water.However,the hydrogen production is greatly suppressed due by its own slow reaction kinetics in the electrocatalytic water decomposition cathodic hydrogen evolution reaction(HER).Constructed the catalysts which could reduce the overpotential of the reaction and accelerate the HER occur is an effective way to solve this problem.In this paper,we introduces a kind of three-dimensional orderly macro-mesoporous carbon material(3DOMMC)prepared by“template method”,and used the material as the carrier of catalysts,performed N-doped and load of different metal,and investigated the electrocatalytic hydrogen evolution(HER)properties of the catalysts.Including:using monocyanamide as the nitrogen source,using Ni(NO32·6H2O or using Ru Cl3·3H2O as a metal source,Na H2PO2as a phosphorus source,obtained the catalyst Ni2P-Ni5P4@C3N4/3DOMMC or the catalyst Ru@C3N4/3DOMMC after roasting at high temperature;Dues to the large surface area,the multi-active site and the fast material/electron transport rate of three-dimensional orderly macro-mesoporous N-doped carbon materials and the catalytic capacity of the metal itself,Both catalysts showed relatively excellent HER reactivity and stability.When the current density is 10m A/cm2,the overpotential is 187.7 m V and 25.8 m V in the alkaline solution,respectively.It shows that the N-doped 3DOMMC composite material has a good development prospect in hydrogen evolution reaction.
Keywords/Search Tags:three-dimensional orderly macroporous, N-doped Carbon materials, hydrogen evolution reaction, Ni2P-Ni5P4, Ruthenium
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