Sun Benteng, Yang Shaorui, Guo Yichen, Xue Yanjun, Tian Jian, Cui Hongzhi, Song Xiaojie
School of Materials Science and Engineering, Shandong University of Science and Technology, Qingdao 266590, China.
School of Materials Science and Engineering, Shandong University of Science and Technology, Qingdao 266590, China.
J Colloid Interface Sci. 2019 Jul 1;547:339-349. doi: 10.1016/j.jcis.2019.04.013. Epub 2019 Apr 4.
A metal-organic frameworks-derived sulfuration and phosphorization method is developed for constructing a hydrogen evolution reaction (HER) electrocatalyst (MoWOSP@C), which is composed of MoWO nanoparticles, MoWS nanosheets, and MoWP nanoparticles coated with a porous hollow carbon matrix. The three-dimensional MoWOSP@C nano-octahedron shows excellent catalytic activity with a low overpotential of -118 mV at a current density of -10 mA cm and a small Tafel slope of 74.1 mV dec, which are all higher than those of the single phase components. The outstanding performance of the MoWOSP@C is due to the highly exposed active sites and synergistic effects of the MoWS and MoWP, carbon conductive matrix and mesoporous hollow structures.
开发了一种由金属有机框架衍生的硫化和磷化方法，用于构建析氢反应（HER）电催化剂（MoWOSP@C），其由MoWO纳米颗粒、MoWS纳米片和涂覆有多孔空心碳基质的MoWP纳米颗粒组成。三维MoWOSP@C纳米八面体表现出优异的催化活性，在电流密度为-10 mA cm时过电位低至-118 mV，塔菲尔斜率小至74.1 mV dec，均高于单相组分。MoWOSP@C的优异性能归因于MoWS和MoWP高度暴露的活性位点、协同效应、碳导电基质和介孔空心结构。
