当前位置: X-MOL 学术Nano Today › 论文详情
Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)
Colloidal nanocrystals for heterogeneous catalysis
Nano Today ( IF 17.4 ) Pub Date : 2019-02-01 , DOI: 10.1016/j.nantod.2018.12.002
Pit Losch , Weixin Huang , Emmett D. Goodman , Cody J. Wrasman , Alexander Holm , Andrew R. Riscoe , Jay A. Schwalbe , Matteo Cargnello

Abstract Catalytic materials are an essential component of the chemical industry. They find applications in everything from fine chemical manufacturing to greenhouse gas mitigation. They are indispensable for developing a sustainable future. Their development has been continuous, from early trial and error efforts to the first fundamental insights gained through surface science, to modern in-situ characterization and computational predictions. The accumulation of knowledge on the working principles of catalytic surfaces allowed designing and producing better systems with improved performance. Even though tremendous progress has been made thanks to surface science techniques, these studies are usually performed under ultra-high vacuum and are therefore limited in their applicability to more relevant industrial conditions. The control over size, shape and composition in colloidal nanocrystals makes them formidable precursors for model heterogeneous catalysts. These model systems enable linking the insights from surface science studies via in-situ and operando studies to realistic catalytic reaction conditions. In this review, colloidal nanocrystals are presented as powerful building blocks for catalytic materials in the quest for fundamental understanding. A review of the principal methods to produce colloidal nanocrystals with a high level of control is reported, complemented by procedures for how to prepare active catalysts from these particles. Examples and guidelines for the catalytic applications of these materials revolve around the three guiding objectives in catalysis science: activity, selectivity and stability. This work will be limited to examples of this colloidal approach in the areas of thermal, electro- and photocatalysis. The exposed approaches can be used and extended to many other areas of catalysis science, thus providing a new avenue to explore fundamentals and applications of catalytic materials.

中文翻译:

用于多相催化的胶体纳米晶体

摘要 催化材料是化学工业的重要组成部分。它们在从精细化学品制造到温室气体减排的方方面面都有应用。它们对于发展可持续的未来是必不可少的。他们的发展一直在持续,从早期的反复试验到通过表面科学获得的第一个基本见解,再到现代原位表征和计算预测。对催化表面工作原理知识的积累使得设计和生产性能更好的系统成为可能。尽管表面科学技术取得了巨大进步,但这些研究通常是在超高真空下进行的,因此它们在更相关的工业条件下的适用性受到限制。控制尺寸,胶体纳米晶体的形状和组成使它们成为模型非均相催化剂的强大前体。这些模型系统能够通过原位和原位研究将表面科学研究的见解与现实的催化反应条件联系起来。在这篇综述中,胶体纳米晶体被认为是催化材料的强大构建块,以寻求基本的理解。报告了生产具有高度控制的胶体纳米晶体的主要方法的综述,并辅以如何从这些颗粒制备活性催化剂的程序。这些材料的催化应用示例和指南围绕催化科学的三个指导目标:活性、选择性和稳定性。这项工作将仅限于这种胶体方法在热、电和光催化领域的例子。暴露的方法可以使用并扩展到催化科学的许多其他领域,从而为探索催化材料的基础和应用提供了新的途径。
更新日期:2019-02-01
down
wechat
bug