Growth mechanism of core–shell PtNi–Ni nanoparticles using in situ transmission electron microscopy
Source abstract
Abstract
Controlling the growth, morphology and structure of nanocrystals is fundamental to achieving facet dependent physical and chemical properties. Core-shell PtNi-Ni nanoparticles' evolution was investigated using in situ liquid cell transmission electron microscopy (TEM). A two-stage growth of core-shell PtNi-Ni nanoparticles was observed. The platinum (Pt)-based binary alloy was formed initially by a thermodynamically driven process, then grown by a monomer attachment process, and then the core formed and the process was stopped by depletion of the Pt precursor, and finally the nickel (Ni) shell formed. This growth process gives a way to grow a metallic shell for novel catalysts.
Source: openalex_inverted_index · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Electrocatalysts for Energy Conversion · Nanoporous metals and alloys · Anodic Oxide Films and Nanostructures
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
College of Materials Science and Engineering
Hebei University of Engineering
Handan
China
Division of Functional Materials
Materials Sciences Division
Lawrence Berkeley National Laboratory
Berkeley
USA
Department of Electrical Engineering and Computer Science
National Center for Electron Microscopy
Molecular Foundry
Institute of Physics
Chinese Academy of Science
Beijing 100190
Central Iron and Steel Research Institute
Beijing 100081
Department of Materials Science and Engineering
Funding
China Scholarship Council · Natural Science Foundation of Hebei Province
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