{"title":"掺杂水平、组成、温度和微观结构对水气倒转反应中铁和钴催化剂的影响","authors":"Shailza Saini, Harley Makepeace, Nathaniel Allen, Qiong Cai, Kalliopi Kousi","doi":"10.1016/j.mtsust.2025.101196","DOIUrl":null,"url":null,"abstract":"<div><div>Exsolution has been recently demonstrated as one of the most effective strategies for designing highly stable and active catalysts, offering precise control over nanoparticle size, composition, structure, and morphology. This approach has gained significant attention for CO<sub>2</sub> utilisation, particularly in the reverse water-gas shift (rWGS) reaction. However, the efficiency of exsolved catalysts is governed by multiple factors that influence nanoparticle formation, distribution, and stability. To gain a comprehensive understanding of how these various parameters interplay in exsolved catalysts, this study systematically investigates the impact of dopant levels, composition, reduction temperature, and material microstructure on the exsolution of iron and cobalt nanoparticles from perovskite materials and assesses their catalytic performance in the rWGS reaction. Our findings highlight the critical role of microstructure refinement, dopant chemistry, and pre-treatment conditions in optimising exsolution behaviour and catalytic performance. This work offers valuable insights toward establishing a standardised framework for the rational design of efficient and stable next-generation exsolved catalysts for CO<sub>2</sub> utilisation but is also expected to impact many other applications.</div></div>","PeriodicalId":18322,"journal":{"name":"Materials Today Sustainability","volume":"31 ","pages":"Article 101196"},"PeriodicalIF":7.9000,"publicationDate":"2025-08-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Impact of dopant levels, composition, temperature, and microstructure on exsolved iron and cobalt catalysts for the reverse water-gas shift reaction\",\"authors\":\"Shailza Saini, Harley Makepeace, Nathaniel Allen, Qiong Cai, Kalliopi Kousi\",\"doi\":\"10.1016/j.mtsust.2025.101196\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><div>Exsolution has been recently demonstrated as one of the most effective strategies for designing highly stable and active catalysts, offering precise control over nanoparticle size, composition, structure, and morphology. This approach has gained significant attention for CO<sub>2</sub> utilisation, particularly in the reverse water-gas shift (rWGS) reaction. However, the efficiency of exsolved catalysts is governed by multiple factors that influence nanoparticle formation, distribution, and stability. To gain a comprehensive understanding of how these various parameters interplay in exsolved catalysts, this study systematically investigates the impact of dopant levels, composition, reduction temperature, and material microstructure on the exsolution of iron and cobalt nanoparticles from perovskite materials and assesses their catalytic performance in the rWGS reaction. Our findings highlight the critical role of microstructure refinement, dopant chemistry, and pre-treatment conditions in optimising exsolution behaviour and catalytic performance. This work offers valuable insights toward establishing a standardised framework for the rational design of efficient and stable next-generation exsolved catalysts for CO<sub>2</sub> utilisation but is also expected to impact many other applications.</div></div>\",\"PeriodicalId\":18322,\"journal\":{\"name\":\"Materials Today Sustainability\",\"volume\":\"31 \",\"pages\":\"Article 101196\"},\"PeriodicalIF\":7.9000,\"publicationDate\":\"2025-08-11\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Materials Today Sustainability\",\"FirstCategoryId\":\"88\",\"ListUrlMain\":\"https://www.sciencedirect.com/science/article/pii/S2589234725001253\",\"RegionNum\":3,\"RegionCategory\":\"材料科学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q1\",\"JCRName\":\"GREEN & SUSTAINABLE SCIENCE & TECHNOLOGY\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Materials Today Sustainability","FirstCategoryId":"88","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S2589234725001253","RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"GREEN & SUSTAINABLE SCIENCE & TECHNOLOGY","Score":null,"Total":0}
Impact of dopant levels, composition, temperature, and microstructure on exsolved iron and cobalt catalysts for the reverse water-gas shift reaction
Exsolution has been recently demonstrated as one of the most effective strategies for designing highly stable and active catalysts, offering precise control over nanoparticle size, composition, structure, and morphology. This approach has gained significant attention for CO2 utilisation, particularly in the reverse water-gas shift (rWGS) reaction. However, the efficiency of exsolved catalysts is governed by multiple factors that influence nanoparticle formation, distribution, and stability. To gain a comprehensive understanding of how these various parameters interplay in exsolved catalysts, this study systematically investigates the impact of dopant levels, composition, reduction temperature, and material microstructure on the exsolution of iron and cobalt nanoparticles from perovskite materials and assesses their catalytic performance in the rWGS reaction. Our findings highlight the critical role of microstructure refinement, dopant chemistry, and pre-treatment conditions in optimising exsolution behaviour and catalytic performance. This work offers valuable insights toward establishing a standardised framework for the rational design of efficient and stable next-generation exsolved catalysts for CO2 utilisation but is also expected to impact many other applications.
期刊介绍:
Materials Today Sustainability is a multi-disciplinary journal covering all aspects of sustainability through materials science.
With a rapidly increasing population with growing demands, materials science has emerged as a critical discipline toward protecting of the environment and ensuring the long term survival of future generations.