异质结
纳米颗粒
光催化
化学
半导体
纳米技术
面(心理学)
磷化物
相(物质)
Crystal(编程语言)
材料科学
金属
光电子学
催化作用
社会心理学
生物化学
有机化学
计算机科学
人格
程序设计语言
心理学
五大性格特征
作者
Michael S. Seifner,Markus Snellman,Ofentse A. Makgae,Krishna Kumar,Daniel Jacobsson,Martin Ek,Knut Deppert,Maria E. Messing,Kimberly A. Dick
摘要
Earth-abundant transition metal phosphides are promising materials for energy-related applications. Specifically, copper(I) phosphide is such a material and shows excellent photocatalytic activity. Currently, there are substantial research efforts to synthesize well-defined metal-semiconductor nanoparticle heterostructures to enhance the photocatalytic performance by an efficient separation of charge carriers. The involved crystal facets and heterointerfaces have a major impact on the efficiency of a heterostructured photocatalyst, which points out the importance of synthesizing potential photocatalysts in a controlled manner and characterizing their structural and morphological properties in detail. In this study, we investigated the interface dynamics occurring around the synthesis of Ag-Cu3P nanoparticle heterostructures by a chemical reaction between Ag-Cu nanoparticle heterostructures and phosphine in an environmental transmission electron microscope. The major product of the Cu-Cu3P phase transformation using Ag-Cu nanoparticle heterostructures with a defined interface as a template preserved the initially present Ag{111} facet of the heterointerface. After the complete transformation, corner truncation of the faceted Cu3P phase led to a physical transformation of the nanoparticle heterostructure. In some cases, the structural rearrangement toward an energetically more favorable heterointerface has been observed and analyzed in detail at the atomic level. The herein-reported results will help better understand dynamic processes in Ag-Cu3P nanoparticle heterostructures and enable facet-engineered surface and heterointerface design to tailor their physical properties.
科研通智能强力驱动
Strongly Powered by AbleSci AI