Nanoparticle Exsolution: Understanding the Role of Oxygen Vacancies in the Exsolution Mechanism of Perovskite Oxides.

纳米颗粒溶出：了解氧空位在钙钛矿氧化物溶出机制中的作用。

• 批准号: 2623572
• 金额: --
• 依托单位: Imperial College London
• 依托单位国家: 英国
• 项目类别: Studentship
• 财政年份: 2021
• 资助国家: 英国
• 起止时间: 2021 至 无数据
• 项目状态: 未结题
• 来源: https://gtr.ukri.org/projects?ref=studentship-2623572
• 关键词: Nanoparticle; Exsolution; Understanding; Role; Oxygen

This project will investigate the exsolution of iridium nanoparticles from strontium titanate (SrTiO3) and strontium lanthanum titanate (Sr1-xLaxTiO3-d) perovskites, with the primary aim of producing catalysts with uniformly distributed, catalytically active nanoparticles for energy applications, particularly towards achieving net-zero emissions. This study will also aim to elucidate the mechanism of nanoparticle exsolution, in particular, the role of oxygen vacancies, to advance the state of knowledge of nanoparticle exsolution from perovskite parent oxides and drive us closer towards the development and widespread application of perovskite-based nanoparticle catalysts that retain their activity under operating conditions, significantly improving their lifetime before replacement.

本项目将研究Ir纳米粒子从钛酸锶(SrTiO3)和钛酸锶镧(SR1-xLaxTiO3-d)钙钛矿中的出溶，主要目的是生产具有均匀分布、催化活性的纳米粒子的催化剂，用于能源应用，特别是实现净零排放。本研究还将旨在阐明纳米粒子出溶的机理，特别是氧空位的作用，以促进对纳米粒子从钙钛矿型母体氧化物中出溶的认识，并推动我们更接近于钙钛矿基纳米粒子催化剂的开发和广泛应用，这种催化剂在操作条件下保持其活性，显著提高其替换前的寿命。