A unique pathway of PtNi nanoparticle formation observed with liquid cell transmission electron microscopy

Liyun Zheng; Lixin Zhao; Songhao Zhao; Xiaowei Zhang; Karen C. Bustillo; Yuan Yao; Xiaofei Yi; Minggang Zhu; Wei Li; Haimei Zheng

doi:10.1039/c9nr08352a

journal article·2020

A unique pathway of PtNi nanoparticle formation observed with liquid cell transmission electron microscopy

Liyun Zheng, Lixin Zhao, Songhao Zhao, Xiaowei Zhang, Karen C. Bustillo, Yuan Yao, Xiaofei Yi, Minggang Zhu, Wei Li, Haimei Zheng

Nanoscale· Volume 12· Issue 3

Publisher page

Source abstract

Abstract

An understanding of nanoparticle growth is significant for controlled synthesis of nanomaterials with desired physical and chemical properties. Here we report the in situ study of platinum-nickel alloy nanoparticle growth using in situ liquid cell transmission electron microscopy (TEM). The observation revealed that Ni dendrites can form at the beginning and subsequently PtNi nanoparticles nucleate and grow by consumption of the Ni dendrites. The resulting PtNi alloy nanoparticles have a narrow size distribution with an average diameter of 3.7 nm, which are smaller than those obtained via classical solution growth. This work shed light on using such a unique growth pathway for the synthesis of novel nanoparticles.

Source: openalex_inverted_index · Quality: candidate unverified · Source record ↗

Research context

Metals & alloys Nanomaterials

OpenAlex topics: Electrochemical Analysis and Applications · Electrocatalysts for Energy Conversion · Advanced Electron Microscopy Techniques and Applications

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

Division of Functional Materials

Central Iron and Steel Research Institute

Beijing

China

College of Materials Science and Engineering

Hebei University of Engineering

Handan

Department of Electrical Engineering and Computer Science

Ningbo University

Ningbo

National Center for Electron Microscopy

Molecular Foundry

Lawrence Berkeley National Laboratory

Berkeley

USA

Institute of Physics

Chinese Academy of Science

Beijing 100190

State Key Laboratory of Rare Earth Permanent Magnetic Materials

Hefei

Earth-Panda Advance Magnetic Materials Co.

Ltd

Materials Sciences Division

Department of Materials Science and Engineering

Funding

China Scholarship Council · Natural Science Foundation of Hebei Province

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