Bubble nucleation and migration in a lead–iron hydr(oxide) core–shell nanoparticle

Iron hydroxide is found in a wide range of contexts ranging from biominerals to steel corrosion, and it can transform to anhydrous oxide via releasing O2 gas and H2O. However, it is not well understood how gases transport through a crystal lattice. Here, we present in situ observation of the nucleat...

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Main Authors: Niu, Kaiyang, Frolov, Timofey, Xin, Huolin L., Wang, Junling, Asta, Mark, Zheng, Haimei
Other Authors: School of Materials Science & Engineering
Format: Article
Language:English
Published: 2015
Subjects:
TEM
Online Access:https://hdl.handle.net/10356/81174
http://hdl.handle.net/10220/39170
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Institution: Nanyang Technological University
Language: English
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spelling sg-ntu-dr.10356-811742022-02-16T16:26:56Z Bubble nucleation and migration in a lead–iron hydr(oxide) core–shell nanoparticle Niu, Kaiyang Frolov, Timofey Xin, Huolin L. Wang, Junling Asta, Mark Zheng, Haimei School of Materials Science & Engineering Liquid cell TEM Core–shell nanoparticle Nucleation Bubbles Iron hydroxide is found in a wide range of contexts ranging from biominerals to steel corrosion, and it can transform to anhydrous oxide via releasing O2 gas and H2O. However, it is not well understood how gases transport through a crystal lattice. Here, we present in situ observation of the nucleation and migration of gas bubbles in iron (hydr)oxide using transmission electron microscopy. We create Pb–FeOOH model core–shell nanoparticles in a liquid cell. Under electron irradiation, iron hydroxide transforms to iron oxide, during which bubbles are generated, and they migrate through the shell to the nanoparticle surface. Geometric phase analysis of the shell lattice shows an inhomogeneous stain field at the bubbles. Our modeling suggests that the elastic interaction between the core and the bubble provides a driving force for bubble migration. NRF (Natl Research Foundation, S’pore) 2015-12-18T07:05:20Z 2019-12-06T14:22:59Z 2015-12-18T07:05:20Z 2019-12-06T14:22:59Z 2015 Journal Article Niu, K., Frolov, T., Xin, H. L., Wang, J., Asta, M., & Zheng, H. (2015). Bubble nucleation and migration in a lead–iron hydr(oxide) core–shell nanoparticle. Proceedings of the National Academy of Sciences, 112(42), 12928-12932. https://hdl.handle.net/10356/81174 http://hdl.handle.net/10220/39170 10.1073/pnas.1510342112 26438864 en Proceedings of the National Academy of Sciences of the United States of America © 2015 The Authors (Published by National Academy of Sciences). 5 p.
institution Nanyang Technological University
building NTU Library
continent Asia
country Singapore
Singapore
content_provider NTU Library
collection DR-NTU
language English
topic Liquid cell
TEM
Core–shell nanoparticle
Nucleation
Bubbles
spellingShingle Liquid cell
TEM
Core–shell nanoparticle
Nucleation
Bubbles
Niu, Kaiyang
Frolov, Timofey
Xin, Huolin L.
Wang, Junling
Asta, Mark
Zheng, Haimei
Bubble nucleation and migration in a lead–iron hydr(oxide) core–shell nanoparticle
description Iron hydroxide is found in a wide range of contexts ranging from biominerals to steel corrosion, and it can transform to anhydrous oxide via releasing O2 gas and H2O. However, it is not well understood how gases transport through a crystal lattice. Here, we present in situ observation of the nucleation and migration of gas bubbles in iron (hydr)oxide using transmission electron microscopy. We create Pb–FeOOH model core–shell nanoparticles in a liquid cell. Under electron irradiation, iron hydroxide transforms to iron oxide, during which bubbles are generated, and they migrate through the shell to the nanoparticle surface. Geometric phase analysis of the shell lattice shows an inhomogeneous stain field at the bubbles. Our modeling suggests that the elastic interaction between the core and the bubble provides a driving force for bubble migration.
author2 School of Materials Science & Engineering
author_facet School of Materials Science & Engineering
Niu, Kaiyang
Frolov, Timofey
Xin, Huolin L.
Wang, Junling
Asta, Mark
Zheng, Haimei
format Article
author Niu, Kaiyang
Frolov, Timofey
Xin, Huolin L.
Wang, Junling
Asta, Mark
Zheng, Haimei
author_sort Niu, Kaiyang
title Bubble nucleation and migration in a lead–iron hydr(oxide) core–shell nanoparticle
title_short Bubble nucleation and migration in a lead–iron hydr(oxide) core–shell nanoparticle
title_full Bubble nucleation and migration in a lead–iron hydr(oxide) core–shell nanoparticle
title_fullStr Bubble nucleation and migration in a lead–iron hydr(oxide) core–shell nanoparticle
title_full_unstemmed Bubble nucleation and migration in a lead–iron hydr(oxide) core–shell nanoparticle
title_sort bubble nucleation and migration in a lead–iron hydr(oxide) core–shell nanoparticle
publishDate 2015
url https://hdl.handle.net/10356/81174
http://hdl.handle.net/10220/39170
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