Atomic Imaging of Molybdenum Oxide Nanowires with Unique and Complex Periodicity by Advanced Electron Microscopy

Yi Hsin Ting; Chun Wei Huang; Akira Yasuhara; Sheng Yuan Chen; Jui Yuan Chen; Li Chang; Kuo Chang Lu; Wen Wei Wu

doi:10.1021/acs.nanolett.9b03510

Atomic Imaging of Molybdenum Oxide Nanowires with Unique and Complex Periodicity by Advanced Electron Microscopy

Yi Hsin Ting, Chun Wei Huang, Akira Yasuhara, Sheng Yuan Chen, Jui Yuan Chen, Li Chang, Kuo Chang Lu, Wen Wei Wu

Research output: Contribution to journal › Article › peer-review

7 Citations (Scopus)

Abstract

Crystalline Mo₅O₁₄ exhibits distinctive structural features such as tunnel structure and pseudolamellar arrangement according to the ideal model. However, the spatial resolution of the conventional technique of transmission electron microscopy (TEM) is insufficient to distinguish the actual positions of atoms. In this work, we aimed to systematically analyze and identify the Mo₅O₁₄ nanowires fabricated by the chemical vapor deposition (CVD) process. Utilizing high-angle annular dark-field (HAADF), annular bright-field (ABF), and enhanced annular bright-field (E-ABF) within the scanning transmission electron microscope (STEM) mode reveals the structural features at the atomic scale. In addition, the ultrahigh resolution images have confirmed the crystallographic insights in [001] growth direction for the Mo₅O₁₄ nanowires with a tunnel structure throughout the nanowire. The cross-sectional images show the unique close-packed plane and atomic arrangement with a network of MoO₆ octahedra and MoO₇ pentagonal bipyramids. These results are consistent with the theoretical atomic arrangement, supporting the realization of Mo₅O₁₄-type catalysts used in the selective oxidation process and battery applications.

Original language	English
Pages (from-to)	1510-1516
Number of pages	7
Journal	Nano letters
Volume	20
Issue number	3
DOIs	https://doi.org/10.1021/acs.nanolett.9b03510
Publication status	Published - 2020 Mar 11

All Science Journal Classification (ASJC) codes

Bioengineering
General Chemistry
General Materials Science
Condensed Matter Physics
Mechanical Engineering

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10.1021/acs.nanolett.9b03510

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@article{165c9e0982094c7b9e4655c23f278585,

title = "Atomic Imaging of Molybdenum Oxide Nanowires with Unique and Complex Periodicity by Advanced Electron Microscopy",

abstract = "Crystalline Mo5O14 exhibits distinctive structural features such as tunnel structure and pseudolamellar arrangement according to the ideal model. However, the spatial resolution of the conventional technique of transmission electron microscopy (TEM) is insufficient to distinguish the actual positions of atoms. In this work, we aimed to systematically analyze and identify the Mo5O14 nanowires fabricated by the chemical vapor deposition (CVD) process. Utilizing high-angle annular dark-field (HAADF), annular bright-field (ABF), and enhanced annular bright-field (E-ABF) within the scanning transmission electron microscope (STEM) mode reveals the structural features at the atomic scale. In addition, the ultrahigh resolution images have confirmed the crystallographic insights in [001] growth direction for the Mo5O14 nanowires with a tunnel structure throughout the nanowire. The cross-sectional images show the unique close-packed plane and atomic arrangement with a network of MoO6 octahedra and MoO7 pentagonal bipyramids. These results are consistent with the theoretical atomic arrangement, supporting the realization of Mo5O14-type catalysts used in the selective oxidation process and battery applications.",

author = "Ting, {Yi Hsin} and Huang, {Chun Wei} and Akira Yasuhara and Chen, {Sheng Yuan} and Chen, {Jui Yuan} and Li Chang and Lu, {Kuo Chang} and Wu, {Wen Wei}",

note = "Funding Information: W.-W.W. acknowledges the support from the Ministry of Science and Technology (MOST) in Taiwan (Grants MOST 103-2221-E-009-222-MY3, MOST 106-2628-E-009-002-MY3, and MOST 106-2119-M-009-008). This work was financially supported by the “Center for Semiconductor Technology Research at National Chiao Tung University” and the “Frontier Research Center on Fundamental and Applied Sciences of Matters at National Tsing Hua University,” from the Featured Areas Research Center Program within the framework of the Higher Education Sprout Project by the Ministry of Education (MOE) in Taiwan. It was also supported in part by the Ministry of Science and Technology, Taiwan, under Grant MOST-108-3017-F-009-003. In addition, K.-C.L. acknowledges the support from the Ministry of Science and Technology of Taiwan through Grants MOST 105-2628-E-006-002-MY3 and MOST 108-2221-E-006-139-MY3. Publisher Copyright: {\textcopyright} 2019 American Chemical Society.",

year = "2020",

month = mar,

day = "11",

doi = "10.1021/acs.nanolett.9b03510",

language = "English",

volume = "20",

pages = "1510--1516",

journal = "Nano letters",

issn = "1530-6984",

publisher = "American Chemical Society",

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T1 - Atomic Imaging of Molybdenum Oxide Nanowires with Unique and Complex Periodicity by Advanced Electron Microscopy

AU - Ting, Yi Hsin

AU - Huang, Chun Wei

AU - Yasuhara, Akira

AU - Chen, Sheng Yuan

AU - Chen, Jui Yuan

AU - Chang, Li

AU - Lu, Kuo Chang

AU - Wu, Wen Wei

N1 - Funding Information: W.-W.W. acknowledges the support from the Ministry of Science and Technology (MOST) in Taiwan (Grants MOST 103-2221-E-009-222-MY3, MOST 106-2628-E-009-002-MY3, and MOST 106-2119-M-009-008). This work was financially supported by the “Center for Semiconductor Technology Research at National Chiao Tung University” and the “Frontier Research Center on Fundamental and Applied Sciences of Matters at National Tsing Hua University,” from the Featured Areas Research Center Program within the framework of the Higher Education Sprout Project by the Ministry of Education (MOE) in Taiwan. It was also supported in part by the Ministry of Science and Technology, Taiwan, under Grant MOST-108-3017-F-009-003. In addition, K.-C.L. acknowledges the support from the Ministry of Science and Technology of Taiwan through Grants MOST 105-2628-E-006-002-MY3 and MOST 108-2221-E-006-139-MY3. Publisher Copyright: © 2019 American Chemical Society.

PY - 2020/3/11

Y1 - 2020/3/11

N2 - Crystalline Mo5O14 exhibits distinctive structural features such as tunnel structure and pseudolamellar arrangement according to the ideal model. However, the spatial resolution of the conventional technique of transmission electron microscopy (TEM) is insufficient to distinguish the actual positions of atoms. In this work, we aimed to systematically analyze and identify the Mo5O14 nanowires fabricated by the chemical vapor deposition (CVD) process. Utilizing high-angle annular dark-field (HAADF), annular bright-field (ABF), and enhanced annular bright-field (E-ABF) within the scanning transmission electron microscope (STEM) mode reveals the structural features at the atomic scale. In addition, the ultrahigh resolution images have confirmed the crystallographic insights in [001] growth direction for the Mo5O14 nanowires with a tunnel structure throughout the nanowire. The cross-sectional images show the unique close-packed plane and atomic arrangement with a network of MoO6 octahedra and MoO7 pentagonal bipyramids. These results are consistent with the theoretical atomic arrangement, supporting the realization of Mo5O14-type catalysts used in the selective oxidation process and battery applications.

AB - Crystalline Mo5O14 exhibits distinctive structural features such as tunnel structure and pseudolamellar arrangement according to the ideal model. However, the spatial resolution of the conventional technique of transmission electron microscopy (TEM) is insufficient to distinguish the actual positions of atoms. In this work, we aimed to systematically analyze and identify the Mo5O14 nanowires fabricated by the chemical vapor deposition (CVD) process. Utilizing high-angle annular dark-field (HAADF), annular bright-field (ABF), and enhanced annular bright-field (E-ABF) within the scanning transmission electron microscope (STEM) mode reveals the structural features at the atomic scale. In addition, the ultrahigh resolution images have confirmed the crystallographic insights in [001] growth direction for the Mo5O14 nanowires with a tunnel structure throughout the nanowire. The cross-sectional images show the unique close-packed plane and atomic arrangement with a network of MoO6 octahedra and MoO7 pentagonal bipyramids. These results are consistent with the theoretical atomic arrangement, supporting the realization of Mo5O14-type catalysts used in the selective oxidation process and battery applications.

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JO - Nano letters

JF - Nano letters

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ER -

Atomic Imaging of Molybdenum Oxide Nanowires with Unique and Complex Periodicity by Advanced Electron Microscopy

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