新型石墨烯杂化二维有序介孔双金属磷化物纳米催化材料的可控合成、结构和性能调控及电催化产氢性能研究

本项目拟设计一系列新型石墨烯杂化二维有序介孔双金属磷化物纳米催化材料2D-meso-MM’P/graphene（G）（M, M’= Fe, Co, Ni, Cu, Mo, W），系统研究该纳米催化材料的可控合成、结构和性能调控及电催化分解水产氢（HER）性能。重点探索2D-meso-MM’P/G纳米催化材料的组成、孔结构、结晶性、电子传输性能等因素对其电催化HER性能的影响，揭示催化材料组成-结构-性能的关联关系。拟利用XPS、Raman、EAXFS、EIS等表征手段，结合DFT计算深入研究催化材料中各组分的价态、表面缺陷、配位环境、相互作用及能带结构，阐明电催化HER中的反应机理。研究所开发的新型2D-meso-MM’P/G纳米催化材料将解决传统电催化材料活性物种易团聚、活性位点暴露数目少、传质效率低、稳定性差、导电能力弱等问题，为开发新型的电催化材料提供了有价值的理论指导和材料范例。

This project intends to design a series of novel graphene hybrid two dimensionally ordered mesoporous binary-transition metal phosphide nanomaterials 2D-meso-MM’P/graphene (G) (M, M’ = Fe, Co, Ni, Cu, Mo, W), and their controlled synthesis, structure and property modulation and the performance of electrocatalytic water splitting for hydrogen generation (HER) will be systematically studied. The influences of pore structure, composite, crystallinity, and electron transport performance on the catalytic property of 2D-meso-MM’P/G catalysts for HER will be mainly focused to reveal the association relationship of composition, structure, and property in catalytic materials. The valence state, surface defect, coordination environment, interaction of each component, and band structure in 2D-meso-MM’P/G catalysts will be deeply studied by XPS, Raman, EAXFS, EIS, and DFT to clarify reaction mechanism in HER in detail. The obtained 2D-meso-MM’P/G catalysts will overcome the shortcomings of conventional electrocatalysts that are liable to aggregation of activity species, and have less exposed active sites, lower mass transfer efficiency and dispersion of catalytic active species, poor catalytic stability and conductivity. The research will offer valuable guidance and model material to develop novel electrocatalytic nanomaterials.