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

超分子类似模板仿生合成多级复合材料、介晶形成机制及其电催化应用

• 批准号: 322995402
• 负责人: Professor Dr. Helmut Cölfen (†)
• 金额: --
• 依托单位: Arbeitsgruppe Physikalische Chemie (AG Cölfen)
• 依托单位国家: 德国
• 项目类别: Research Grants
• 财政年份: 2017
• 资助国家: 德国
• 起止时间: 2016-12-31 至 2020-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/322995402?language=en
• 关键词: Bio; Inspired; Synthesis; Hierarchical; Composites

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.

该项目旨在设计一种环境友好的方法，以碲纳米线和硅酸钙纳米线作为超分子类似物模板，大规模合成新型分级复合纳米材料，用于电催化应用。超细纳米线的柔性和表面电荷分布以及自组装行为更接近聚合物链而不是刚体。我们建议通过结合仿生学和纳米科学，使用超细纳米线作为超分子模板类似物，用于电催化剂（铁、镍、钴氧化物以及钴和钼硫化物）的仿生合成。对超细纳米线表面的成核和生长原理以及晶核自组装的原理进行详细研究，以了解结晶机制并设计和控制新型分级纳米材料的合成。基于这些制备的多级复合电催化剂，我们研究了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和电化学性能的相关性。所提出的使用超细纳米线作为超分子模板类似物的路线将为传统电化学纳米材料和仿生合成提供新的视角。