title: Porous Molybdenum-Based Hybrid Catalysts for Highly Efficient Hydrogen Evolution.
abstract: We have synthesized a porous Mo-based composite obtained from a polyoxometalate-based metal-organic framework and graphene oxide (POMOFs/GO) using a simple one-pot method. The MoO2 @PC-RGO hybrid material derived from the POMOFs/GO composite is prepared at a relatively low carbonization temperature, which presents a superior activity for the hydrogen-evolution reaction (HER) in acidic media owing to the synergistic effects among highly dispersive MoO2 particles, phosphorus-doped porous carbon, and RGO substrates. MoO2 @PC-RGO exhibits a very positive onset potential close to that of 20 % Pt/C, low Tafel slope of 41 mV dec(-1) , high exchange current density of 4.8×10(-4)  A cm(-2) , and remarkable long-term cycle stability. It is one of the best high-performance catalysts among the reported nonprecious metal catalysts for HER to date.
authors.affiliation: School of Chemistry and Materials Science, Nanjing Normal University, Nanjing 210023 (P.R. China).
authors.forename: Yu-Jia
authors.initials: YJ
authors.lastname: Tang
authors.affiliation: Division of Nanomaterials and Chemistry, Hefei National Laboratory for Physical Sciences at Microscale, Collaborative Innovation Center of Suzhou, Nano Science and Technology, Department of Chemistry, University of Science and Technology of China, Hefei 230026 (P.R. China).
authors.forename: Min-Rui
authors.initials: MR
authors.lastname: Gao
authors.affiliation: School of Chemistry and Materials Science, Nanjing Normal University, Nanjing 210023 (P.R. China).
authors.forename: Chun-Hui
authors.initials: CH
authors.lastname: Liu
authors.affiliation: School of Chemistry and Materials Science, Nanjing Normal University, Nanjing 210023 (P.R. China).
authors.forename: Shun-Li
authors.initials: SL
authors.lastname: Li
authors.affiliation: Division of Nanomaterials and Chemistry, Hefei National Laboratory for Physical Sciences at Microscale, Collaborative Innovation Center of Suzhou, Nano Science and Technology, Department of Chemistry, University of Science and Technology of China, Hefei 230026 (P.R. China).
authors.forename: Hai-Long
authors.initials: HL
authors.lastname: Jiang
authors.affiliation: School of Chemistry and Materials Science, Nanjing Normal University, Nanjing 210023 (P.R. China). yqlan@njnu.edu.cn.
authors.forename: Ya-Qian
authors.initials: YQ
authors.lastname: Lan
authors.affiliation: School of Chemistry and Materials Science, Nanjing Normal University, Nanjing 210023 (P.R. China).
authors.forename: Min
authors.initials: M
authors.lastname: Han
authors.affiliation: Division of Nanomaterials and Chemistry, Hefei National Laboratory for Physical Sciences at Microscale, Collaborative Innovation Center of Suzhou, Nano Science and Technology, Department of Chemistry, University of Science and Technology of China, Hefei 230026 (P.R. China). shyu@ustc.edu.cn.
authors.forename: Shu-Hong
authors.initials: SH
authors.lastname: Yu
mesh_terms: D002384:Catalysis; D006859:Hydrogen / Q000737:chemistry*; D008982:Molybdenum / Q000737:chemistry*; D009942:Organometallic Compounds / Q000138:chemical synthesis / Q000737:chemistry*; D010316:Particle Size; D016062:Porosity; D013499:Surface Properties
chemical_list: D009942:Organometallic Compounds; D006859:Hydrogen; D008982:Molybdenum
keywords: Molybdenum; hydrogen-evolution reaction; metal-organic frameworks; phosphorus-doped porous carbon; reduced graphene oxide