Growth of cuprous oxide particles in liquid-phase synthesis investigated by X-ray laser diffraction

Tomotaka Oroguchi, Takashi Yoshidome, Takahiro Yamamoto, Masayoshi Nakasako

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

Cuprous oxide (Cu2O) particles obtained by surfactant-assisted liquid-phase synthesis have cuboid shapes, but the internal structures are difficult to be visualized by electron microscopy. Herein, we investigated the internal structures of numerous individual Cu2O particles with sub-micrometer dimensions by X-ray diffraction imaging (XDI) using X-ray free-electron laser (XFEL) pulses. The reconstructed two-dimensional electron density maps, which displayed inhomogeneous internal structures, were divided into five classes characterized by the positions and shapes of high and low electron density areas. Further analysis of the maps in each class by a manifold learning algorithm revealed that the internal structures of Cu2O particles varied in correlation with total electron density while retaining the characteristics within each class. Based on the analyses, we proposed a growth mechanism to yield the inhomogeneity in the internal structures of Cu2O particles in surfactant-mediated liquid-phase synthesis.

Original languageEnglish
JournalNano Letters
DOIs
Publication statusAccepted/In press - 2018 May 28

Fingerprint

X ray lasers
Carrier concentration
liquid phases
Diffraction
Surface-Active Agents
Oxides
oxides
Liquids
Surface active agents
synthesis
diffraction
lasers
x rays
Free electron lasers
surfactants
Learning algorithms
Electron microscopy
Laser pulses
retaining
free electron lasers

ASJC Scopus subject areas

  • Bioengineering
  • Chemistry(all)
  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanical Engineering

Cite this

Growth of cuprous oxide particles in liquid-phase synthesis investigated by X-ray laser diffraction. / Oroguchi, Tomotaka; Yoshidome, Takashi; Yamamoto, Takahiro; Nakasako, Masayoshi.

In: Nano Letters, 28.05.2018.

Research output: Contribution to journalArticle

@article{8fe6d801c9ea48f99fa42ac9e7bd74d8,
title = "Growth of cuprous oxide particles in liquid-phase synthesis investigated by X-ray laser diffraction",
abstract = "Cuprous oxide (Cu2O) particles obtained by surfactant-assisted liquid-phase synthesis have cuboid shapes, but the internal structures are difficult to be visualized by electron microscopy. Herein, we investigated the internal structures of numerous individual Cu2O particles with sub-micrometer dimensions by X-ray diffraction imaging (XDI) using X-ray free-electron laser (XFEL) pulses. The reconstructed two-dimensional electron density maps, which displayed inhomogeneous internal structures, were divided into five classes characterized by the positions and shapes of high and low electron density areas. Further analysis of the maps in each class by a manifold learning algorithm revealed that the internal structures of Cu2O particles varied in correlation with total electron density while retaining the characteristics within each class. Based on the analyses, we proposed a growth mechanism to yield the inhomogeneity in the internal structures of Cu2O particles in surfactant-mediated liquid-phase synthesis.",
author = "Tomotaka Oroguchi and Takashi Yoshidome and Takahiro Yamamoto and Masayoshi Nakasako",
year = "2018",
month = "5",
day = "28",
doi = "10.1021/acs.nanolett.8b02153",
language = "English",
journal = "Nano Letters",
issn = "1530-6984",
publisher = "American Chemical Society",

}

TY - JOUR

T1 - Growth of cuprous oxide particles in liquid-phase synthesis investigated by X-ray laser diffraction

AU - Oroguchi, Tomotaka

AU - Yoshidome, Takashi

AU - Yamamoto, Takahiro

AU - Nakasako, Masayoshi

PY - 2018/5/28

Y1 - 2018/5/28

N2 - Cuprous oxide (Cu2O) particles obtained by surfactant-assisted liquid-phase synthesis have cuboid shapes, but the internal structures are difficult to be visualized by electron microscopy. Herein, we investigated the internal structures of numerous individual Cu2O particles with sub-micrometer dimensions by X-ray diffraction imaging (XDI) using X-ray free-electron laser (XFEL) pulses. The reconstructed two-dimensional electron density maps, which displayed inhomogeneous internal structures, were divided into five classes characterized by the positions and shapes of high and low electron density areas. Further analysis of the maps in each class by a manifold learning algorithm revealed that the internal structures of Cu2O particles varied in correlation with total electron density while retaining the characteristics within each class. Based on the analyses, we proposed a growth mechanism to yield the inhomogeneity in the internal structures of Cu2O particles in surfactant-mediated liquid-phase synthesis.

AB - Cuprous oxide (Cu2O) particles obtained by surfactant-assisted liquid-phase synthesis have cuboid shapes, but the internal structures are difficult to be visualized by electron microscopy. Herein, we investigated the internal structures of numerous individual Cu2O particles with sub-micrometer dimensions by X-ray diffraction imaging (XDI) using X-ray free-electron laser (XFEL) pulses. The reconstructed two-dimensional electron density maps, which displayed inhomogeneous internal structures, were divided into five classes characterized by the positions and shapes of high and low electron density areas. Further analysis of the maps in each class by a manifold learning algorithm revealed that the internal structures of Cu2O particles varied in correlation with total electron density while retaining the characteristics within each class. Based on the analyses, we proposed a growth mechanism to yield the inhomogeneity in the internal structures of Cu2O particles in surfactant-mediated liquid-phase synthesis.

UR - http://www.scopus.com/inward/record.url?scp=85049911566&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85049911566&partnerID=8YFLogxK

U2 - 10.1021/acs.nanolett.8b02153

DO - 10.1021/acs.nanolett.8b02153

M3 - Article

JO - Nano Letters

JF - Nano Letters

SN - 1530-6984

ER -