title: Free MoS2 Nanoflowers Grown on Graphene by Microwave-Assisted Synthesis as Highly Efficient Non-Noble-Metal Electrocatalysts for the Hydrogen Evolution Reaction.
abstract: Advanced approaches to preparing non-noble-metal electrocatalysts for the hydrogen evolution reaction (HER) are considered to be a significant breakthrough in promoting the exploration of renewable resources. In this work, a hybrid material of MoS2 nanoflowers (NFs) on reduced graphene oxide (rGO) was synthesized as a HER catalyst via an environmentally friendly, efficient approach that is also suitable for mass production. Small-sized MoS2 NFs with a diameter of ca. 190 nm and an abundance of exposed edges were prepared by a hydrothermal method and were subsequently supported on rGO by microwave-assisted synthesis. The results show that MoS2 NFs were distributed uniformly on the remarkably reduced GO and preserved the outstanding original structural features perfectly. Electrochemical tests show that the as-prepared hybrid material exhibited excellent HER activity, with a small Tafel slope of 80 mV/decade and a low overpotential of 170 mV.
authors.affiliation: MEMS Center, School of Astronautics, Harbin Institute of Technology, Harbin, 150001, P. R. China.
authors.forename: Jiamu
authors.initials: J
authors.lastname: Cao
authors.affiliation: MEMS Center, School of Astronautics, Harbin Institute of Technology, Harbin, 150001, P. R. China.
authors.forename: Xuelin
authors.initials: X
authors.lastname: Zhang
authors.affiliation: MEMS Center, School of Astronautics, Harbin Institute of Technology, Harbin, 150001, P. R. China.
authors.forename: Yufeng
authors.initials: Y
authors.lastname: Zhang
authors.affiliation: School of Electronics and Information Engineering, Harbin Institute of Technology, Harbin, 150001, P. R. China.
authors.forename: Jing
authors.initials: J
authors.lastname: Zhou
authors.affiliation: MEMS Center, School of Astronautics, Harbin Institute of Technology, Harbin, 150001, P. R. China.
authors.forename: Yinuo
authors.initials: Y
authors.lastname: Chen
authors.affiliation: MEMS Center, School of Astronautics, Harbin Institute of Technology, Harbin, 150001, P. R. China.
authors.forename: Xiaowei
authors.initials: X
authors.lastname: Liu
mesh_terms: D002384:Catalysis; D004220:Disulfides / Q000737:chemistry*; D055664:Electrochemical Techniques; D006108:Graphite / Q000737:chemistry*; D006859:Hydrogen / Q000737:chemistry*; D008872:Microwaves; D008982:Molybdenum / Q000737:chemistry*; D049329:Nanostructures / Q000737:chemistry* / Q000648:ultrastructure; D010087:Oxides
chemical_list: D004220:Disulfides; D010087:Oxides; D006108:Graphite; D006859:Hydrogen; D008982:Molybdenum; C082964:molybdenum disulfide