Identification of a quasi-liquid phase at solid–liquid interface

Author:

Peng XinxingORCID,Zhu Fu-Chun,Jiang You-Hong,Sun Juan-Juan,Xiao Liang-Ping,Zhou Shiyuan,Bustillo Karen C.ORCID,Lin Long-Hui,Cheng JunORCID,Li Jian-FengORCID,Liao Hong-GangORCID,Sun Shi-Gang,Zheng HaimeiORCID

Abstract

AbstractAn understanding of solid–liquid interfaces is of great importance for fundamental research as well as industrial applications. However, it has been very challenging to directly image solid–liquid interfaces with high resolution, thus their structure and properties are often unknown. Here, we report a quasi-liquid phase between metal (In, Sn) nanoparticle surfaces and an aqueous solution observed using liquid cell transmission electron microscopy. Our real-time high-resolution imaging reveals a thin layer of liquid-like materials at the interfaces with the frequent appearance of small In nanoclusters. Such a quasi-liquid phase serves as an intermediate for the mass transport from the metal nanoparticle to the liquid. Density functional theory-molecular dynamics simulations demonstrate that the positive charges of In ions greatly contribute to the stabilization of the quasi-liquid phase on the metal surface.

Funder

DOE | SC | Basic Energy Sciences

Publisher

Springer Science and Business Media LLC

Subject

General Physics and Astronomy,General Biochemistry, Genetics and Molecular Biology,General Chemistry,Multidisciplinary

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