期刊
NATURE CHEMISTRY
卷 5, 期 11, 页码 916-923出版社
NATURE PUBLISHING GROUP
DOI: 10.1038/NCHEM.1773
关键词
-
资金
- Engineering and Physical Sciences Research Council
- Supergen XIV Project Delivery of Sustainable Hydrogen [EP/G01244X/1]
- European Project METSAPP [FCH JU-GA 278257]
- EPSRC [EP/K015540/1, EP/J016454/1] Funding Source: UKRI
- Engineering and Physical Sciences Research Council [EP/J016454/1, EP/K015540/1] Funding Source: researchfish
Surfaces decorated with uniformly dispersed catalytically active nanoparticles play a key role in many fields, including renewable energy and catalysis. Typically, these structures are prepared by deposition techniques, but alternatively they could be made by growing the nanoparticles in situ directly from the (porous) backbone support. Here we demonstrate that growing nano-size phases from perovskites can be controlled through judicious choice of composition, particularly by tuning deviations from the ideal ABO(3) stoichiometry. This non-stoichiometry facilitates a change in equilibrium position to make particle exsolution much more dynamic, enabling the preparation of compositionally diverse nanoparticles (that is, metallic, oxides or mixtures) and seems to afford unprecedented control over particle size, distribution and surface anchorage. The phenomenon is also shown to be influenced strongly by surface reorganization characteristics. The concept exemplified here may serve in the design and development of more sophisticated oxide materials with advanced functionality across a range of possible domains of application.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据