State Key Laboratory of Organic-Inorganic Composites and Beijing Key Laboratory of Energy Environmental Catalysis , Beijing University of Chemical Technology , Beijing 100029 , China.
Inorg Chem. 2018 Nov 5;57(21):13859-13865. doi: 10.1021/acs.inorgchem.8b02359. Epub 2018 Oct 23.
The design and synthesis of high-activity earth-abundant material-based electrocatalysts for hydrogen evolution reaction (HER) are of great significance. Here we develop a novel method to prepare a MoP nanoparticle supported on N,P-codoped reduced graphene oxides (MoP/N,P-rGO) by pyrolysis of the self-assembled precursor. Benefiting from the selected components of the assembly, P and N atoms are mixed at the molecular level, which leads to MoP nanoparticles uniformly attaching to the graphene substrate and a certain amount of N and P atoms codoping to graphene. The obtained MoP/N,P-rGO exhibits a good HER performance that only needs an overpotential of 115 mV to achieve a HER current density of 10 mA cm. The enhanced HER performance is due to the well-dispersed MoP nanoparticles and the synergistic effect from the doped graphene substrate. It shows that the selected functional components integrated by the self-assembly process are appropriate precursors for the synthesis of high-quality HER electrocatalysts.
用于析氢反应（HER）的高效、丰富地球元素的电催化剂的设计和合成具有重要意义。在这里，我们开发了一种通过自组装前体制备负载在 N、P 共掺杂还原氧化石墨烯（MoP/N、P-rGO）上的 MoP 纳米颗粒的新方法。得益于组装的选择组件，P 和 N 原子在分子水平上混合，导致 MoP 纳米颗粒均匀地附着在石墨烯基底上，并且一定数量的 N 和 P 原子共掺杂到石墨烯中。所得到的 MoP/N、P-rGO 表现出良好的 HER 性能，仅需 115 mV 的过电势即可实现 10 mA cm 的 HER 电流密度。增强的 HER 性能归因于分散良好的 MoP 纳米颗粒和掺杂石墨烯基底的协同效应。这表明通过自组装过程集成的选择功能组件是合成高质量 HER 电催化剂的合适前体。
