基于金属有机骨架前驱体制备纳米磷化镍催化剂（英文）  

Preparation of Metal-Organic Framework-Derived Nano-Scale Nickel Phosphide Catalysts

作　　者：徐丹 朱良奎 周丹[1] 付煜荣[1] 符小文[1] 陈榕[1] 李海霞[1] XU Dan;ZHU Liang-Kui;ZHOU Dan;FU Yu-Rong;FU Xiao-Wen;CHEN Rong;LI Hai-Xia(College of Pharmacy,Hainan Medical College,Haikou 571119,China;State Key Laboratory of Inorganic Synthesis and Preparative Chemistry,Jilin University,Changchun 130012,China)

机构地区：[1]海南医学院药学院,海口571199 [2]吉林大学无机合成与制备化学国家重点实验室,吉林130012

出　　处：《无机化学学报》2019年第8期1455-1462,共8页Chinese Journal of Inorganic Chemistry

基　　金：海南省自然科学基金(No.219QN219);海南省重点研发项目(No.ZDYF2018024);海南医学院人才科研基金资助项目

摘　　要：采用镍基金属有机骨架化合物(Ni-MOF)为前驱体,通过低温碳化获得Ni@C,并通过磷化成功地制备了不同结构的磷化镍纳米颗粒。将所得材料应用于析氢反应(HER)催化剂,在Ni@C与红磷质量比为1∶1及热解温度为500 ℃时获得的Ni1P1-500表现出优异的电催化性能,在酸性介质中,电流密度为10 mA·cm^-2时,过电位为178 mV,并展现了良好的循环性能。较小的Tafel斜率(62 mV·dec^-1)揭示了析氢反应的机理为Desorption-Heyrovsky机制。优异的电催化性能可归因于磷化镍催化剂表面存在的质子受体(P位点)和氢化物受体(Ni位点)活性中心。Herein,nickel phosphides nanoparticles with different phases were successfully prepared by multi-step calcination and phosphidation process at low temperature using Ni based MOF (Ni-MOF) as the precursor.The resulting materials were applied to the hydrogen evolution reaction (HER) catalyst,Ni1P1-500 obtained at a mass ratio of Ni@C to red phosphorus of 1∶1 and a pyrolysis temperature of 500 ℃ exhibited a remarkably enhanced electrocatalytic performance with a current density of 10 mA·cm^-2 at an overpotential of 178 mV and a superior durability for the HER in acid media.A small Tafel slope of 62 mV·dec^-1 revealed a Desorption-Heyrovsky mechanism during the HER.The excellent electrocatalytic performance might be ascribed to the presence of the proton acceptor (P site) and hydride-acceptor (Ni site) centers on the surface of nickel phosphide.

关 键 词：金属有机骨架化合物 磷化镍 纳米颗粒 析氢反应 电催化 

分 类 号：O614.8[理学—无机化学]