title: Graphene Porous Foam Loaded with Molybdenum Carbide Nanoparticulate Electrocatalyst for Effective Hydrogen Generation.
abstract: A facile method is developed for the synthesis of graphene porous foam (Gr PF) loaded with dispersed molybdenum carbide (Mo2 C) nanoparticles; the material exhibits effective catalytic activity in the hydrogen evolution reaction (HER). Mo2 C/Gr PF is synthesized by the carbonization of glucose and the carbothermal reduction of hexaammonium molybdate in a confined space defined by the intervals between sodium chloride nanoparticles. The synthesis in the confined space results in thin Gr PF (≈8 nm) loaded with aggregation-free small Mo2 C nanoparticles [(13±2) nm]. The overpotential required for a current density of 20 mA cm(-2) in the electrochemical hydrogen generation is as small as 199 mV in acidic solution and 380 mV in basic solution. The performance is superior to that of a Mo2 C/C composite and compares favorably to those reported for Mo2 C nanostructures. The Mo2 C/Gr PF affords stable water electrolysis in both acidic and basic solution and exhibits nearly 100 % faradaic efficiency. The prominent performance, long-term stability, and high faradic efficiency make Mo2 C/Gr PF a promising HER catalyst for practical hydrogen generation from water electrolysis.
authors.affiliation: Department of Chemistry and Advanced Research Institute, China-Australia Joint Research Center for Functional Materials, Tongji University, Shanghai, 200092, P.R. China.|Functional Molecular Materials Research Centre, Scientific Research Academy, China-Australia Joint Research Center for Functional Materials, Jiangsu University, Zhenjiang, 212013, P.R. China.
authors.forename: Jie
authors.initials: J
authors.lastname: Wang
authors.affiliation: Functional Molecular Materials Research Centre, Scientific Research Academy, China-Australia Joint Research Center for Functional Materials, Jiangsu University, Zhenjiang, 212013, P.R. China.
authors.forename: Han
authors.initials: H
authors.lastname: Xia
authors.affiliation: School of Materials Science and Engineering, Jiangsu University, Zhenjiang, 212013, P.R. China.
authors.forename: Zhen
authors.initials: Z
authors.lastname: Peng
authors.affiliation: Functional Molecular Materials Research Centre, Scientific Research Academy, China-Australia Joint Research Center for Functional Materials, Jiangsu University, Zhenjiang, 212013, P.R. China.
authors.forename: Cuncai
authors.initials: C
authors.lastname: Lv
authors.affiliation: Functional Molecular Materials Research Centre, Scientific Research Academy, China-Australia Joint Research Center for Functional Materials, Jiangsu University, Zhenjiang, 212013, P.R. China.
authors.forename: Lihuang
authors.initials: L
authors.lastname: Jin
authors.affiliation: Functional Molecular Materials Research Centre, Scientific Research Academy, China-Australia Joint Research Center for Functional Materials, Jiangsu University, Zhenjiang, 212013, P.R. China.
authors.forename: Yaoxing
authors.initials: Y
authors.lastname: Zhao
authors.affiliation: Department of Chemistry and Advanced Research Institute, China-Australia Joint Research Center for Functional Materials, Tongji University, Shanghai, 200092, P.R. China. zhip@foxmail.com.|Functional Molecular Materials Research Centre, Scientific Research Academy, China-Australia Joint Research Center for Functional Materials, Jiangsu University, Zhenjiang, 212013, P.R. China. zhip@foxmail.com.
authors.forename: Zhipeng
authors.initials: Z
authors.lastname: Huang
authors.affiliation: Department of Chemistry and Advanced Research Institute, China-Australia Joint Research Center for Functional Materials, Tongji University, Shanghai, 200092, P.R. China. chizhang@tongji.edu.cn.|Functional Molecular Materials Research Centre, Scientific Research Academy, China-Australia Joint Research Center for Functional Materials, Jiangsu University, Zhenjiang, 212013, P.R. China. chizhang@tongji.edu.cn.
authors.forename: Chi
authors.initials: C
authors.lastname: Zhang
mesh_terms: D002384:Catalysis; D055664:Electrochemical Techniques; D006108:Graphite / Q000737:chemistry*; D006859:Hydrogen / Q000737:chemistry*; D008982:Molybdenum / Q000737:chemistry*; D053758:Nanoparticles / Q000737:chemistry*; D016062:Porosity; D014867:Water / Q000737:chemistry
chemical_list: C574181:molybdenum carbide; D014867:Water; D006108:Graphite; D006859:Hydrogen; D008982:Molybdenum
keywords: carbides; graphene; hydrogen; molybdenum; nanoparticles