Steering Dewetting of Metal Films on Semiconductor Surfaces: Design of Nanoscaled Platforms for Heterogeneous Catalysis

半导体表面金属薄膜的引导去湿：多相催化纳米级平台的设计

• 批准号: 438933516
• 负责人: Professor Dr. Marco Altomare, Ph.D.
• 金额: --
• 依托单位: Faculteit Technische Natuurwetenschappen
• 依托单位国家: 德国
• 项目类别: Research Grants
• 资助国家: 德国
• 项目状态: 未结题
• 来源: https://gepris.dfg.de/gepris/projekt/438933516?language=en
• 关键词: Steering; Dewetting; Metal; Films; Semiconductor

The present project aims at developing nanostructuring tools to design catalyst/semiconductor platforms for application in heterogeneous catalysis.At the core of the research is a semiconductor surface engineering approach based on metal dewetting, i.e. the solid-state transformation of thin metal films into self-organized, defined metal nanoparticles.Dewetting will be steered in size and order, and synergistically interlaced with additional self-organizing principles, such as alloying, dealloying, phase-separation and site-selective functionalization, to decorate semiconductor layers (surfaces) with metal or metal compound catalytic nanoparticles. This approach will yield a generation of “dewetted” catalytic materials, ranging from e.g. nanoalloys to nanoporous or chemically-functionalized nanoparticles, integrated to semiconductor surfaces. The target will be a catalyst fine tuning with nanoscale accuracy to enhance the reaction yield in photocatalytic reactions.Overall, the project will generate the groundwork for true rational design of heterogeneous catalysts, to overcome the intrinsic limitations of common catalyst deposition approaches, i.e. inhomogeneous catalyst distribution, poor loading control, incorporation of undesired species at the catalyst/semiconductor interface, loose catalyst/substrate contact and catalyst fall-off or activity degradation phenomena.As side impact, the research will provide nanostructuring concepts and tools with a direct application to related fields such as electrocatalysis, environmental remediation, plasmonics or sensing and will foster expansion of underlying knowledge on mechanistic aspects, nanoscale control and applications of metal dewetting.

本项目旨在开发纳米结构工具来设计催化剂/半导体平台，以在异质催化剂中应用。在研究的核心是基于金属脱水的半导体表面工程方法，即将薄金属膜的固态转化为自组织的，定义的金属纳米分子的固定型和固定的固定器。自组织原理，例如合金，交易，相位分离和现场选择性功能化，以用金属或金属复合催化纳米颗粒来装饰半导体层（表面）。这种方法将产生从例如纳米合金与纳米多孔或化学功能化的纳米颗粒，整合到半导体表面。 The target will be a catalyst fine tuning with nanoscale accuracy to enhance the reaction yield in photocatalytic reactions.Overall, the project will generate the groundwork for true rational design of heterogeneous catalysts, to overcome the intrinsic limitations of common catalyst deposition approaches, i.e. inhomogeneous catalyst distribution, poor loading control, incorporation of undesired species at the catalyst/semiconductor界面，松散的催化剂/底物接触和催化剂的衰落或活动降解现象。随着副作用，研究将为纳米结构和工具提供直接应用于相关领域的应用，例如电催化，环境恢复，血浆质量或敏感性，并将促进对机械型和应用程序的基础知识扩展的扩展。