Bio-Inspired Synthesis of Hierarchical Composites by Supramolecule Analogue Templates, Formation Mechanism of Mesocrystals and Their Electrocatalytic Application

本项目旨在设计一种以碲纳米线和硅酸钙纳米线为超分子类似物模板，大规模合成新型层次化复合纳米材料的环保工艺。超薄纳米线的柔韧性和表面电荷分布以及自组装行为更接近于聚合物链而不是刚体。我们建议将超薄纳米线作为一种超分子模板模拟物，结合仿生学和纳米科学，用于仿生合成电催化剂（Fe, Ni， Co氧化物和Co和Mo硫化物）。详细研究超薄纳米线表面晶核的成核、生长和自组装原理，为进一步了解其结晶机理、设计和控制新型分层纳米材料的合成提供依据。在此基础上，研究了复合电催化剂的组成和结构对电化学活性和稳定性的影响，并试图建立结构参数与电化学性能的相关性。所提出的超薄纳米线作为超分子模板类似物的路线将为传统的电化学纳米材料和仿生合成提供新的视角。

This project aims to design an environmentally benign procedure to synthesize novel hierarchical composite nanomaterials in large-scale for applications in electrocatalysis by using tellurium nanowires and calcium silicate nanowires as supramolecule analogue templates. The flexibility and surface charge distribution, and self-assembly behavior of the ultrathin nanowires, are closer to a polymer chain rather than to a rigid body. We propose to use the ultrathin nanowires as a supramolecular template analogue for the bio-inspired synthesis of electrocatalysts (Fe, Ni, Co oxides and Co and Mo sulfides) by combining bionics and nanoscience. The detailed studies on the principles of nucleation and growth as well as the self-assembly of the crystal nuclei on the surface of ultrathin nanowires will be performed for understanding the crystallization mechanism and designing and controlling the synthesis of new hierarchical nanomaterials. Based on these prepared hierarchical composite electrocatalysts, we investigate the influence of the composition and structure on the electrochemical activity and stability and try to establish the correlation of the structural parameters and electrochemical performance. The proposed route involved in using ultrathin nanowire as a supramolecular template analogue will provide a new perspective for the traditional electrochemical nanomaterials and bio-inspired synthesis.