1
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Zeng M, Wang W, Yin Y, Zheng C. A simple coordinate transformation method for quickly locating the features of interest in TEM samples. Microscopy (Oxf) 2024:dfae009. [PMID: 38421047 DOI: 10.1093/jmicro/dfae009] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2023] [Revised: 01/16/2024] [Accepted: 02/07/2024] [Indexed: 03/02/2024] Open
Abstract
We developed a simple coordinate transformation method for quickly locating features of interest (FOIs) of samples in transmission electron microscope (TEM). The method is well suited for conducting sample searches in aberration-corrected scanning/transmission electron microscopes (S/TEM), where the survey can be very time-consuming because of the limited field of view imposed by the highly excited objective lens after fine-tuning the aberration correctors. For implementation, a digital image of the sample and the TEM holder was captured using a simple stereo-optical microscope. Naturally presented geometric patterns on the holder were referenced to construct a projective transformation between the electron and optical coordinate systems. The test results demonstrated that the method was accurate and required no electron microscope or specimen holder modifications. Additionally, it eliminated the need to mount the sample onto specific patterned TEM grids or deposit markers, resulting in universal applications for most TEM samples, holders and electron microscopes for fast FOI identification. Furthermore, we implemented the method into a Gatan script for graphical-user-interface-based step-by-step instructions. Through online communication, the script enabled real-time navigation and tracking of the motion of samples in TEM on enlarged optical images with a panoramic view.
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Affiliation(s)
- Mingzhi Zeng
- State Key Laboratory of Surface Physics and Department of Physics, Fudan University, Songhu Rd 2005, Yangpu District, Shanghai 200438, China
| | - Wenzhao Wang
- State Key Laboratory of Surface Physics and Department of Physics, Fudan University, Songhu Rd 2005, Yangpu District, Shanghai 200438, China
| | - Yang Yin
- State Key Laboratory of Surface Physics and Department of Physics, Fudan University, Songhu Rd 2005, Yangpu District, Shanghai 200438, China
| | - Changlin Zheng
- State Key Laboratory of Surface Physics and Department of Physics, Fudan University, Songhu Rd 2005, Yangpu District, Shanghai 200438, China
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2
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Pu Y, He B, Niu Y, Liu X, Zhang B. Chemical Electron Microscopy (CEM) for Heterogeneous Catalysis at Nano: Recent Progress and Challenges. RESEARCH (WASHINGTON, D.C.) 2023; 6:0043. [PMID: 36930759 PMCID: PMC10013794 DOI: 10.34133/research.0043] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/13/2022] [Accepted: 12/18/2022] [Indexed: 01/12/2023]
Abstract
Chemical electron microscopy (CEM), a toolbox that comprises imaging and spectroscopy techniques, provides dynamic morphological, structural, chemical, and electronic information about an object in chemical environment under conditions of observable performance. CEM has experienced a revolutionary improvement in the past years and is becoming an effective characterization method for revealing the mechanism of chemical reactions, such as catalysis. Here, we mainly address the concept of CEM for heterogeneous catalysis in the gas phase and what CEM could uniquely contribute to catalysis, and illustrate what we can know better with CEM and the challenges and future development of CEM.
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Affiliation(s)
- Yinghui Pu
- Shenyang National Laboratory for Materials Science, Institute of Metal Research, Chinese Academy of Sciences, 72 Wenhua Road, Shenyang 110016, China.,School of Materials Science and Engineering, University of Science and Technology of China, 72 Wenhua Road, Shenyang 110016, China
| | - Bowen He
- School of Chemistry and Chemical Engineering, In-situ Center for Physical Sciences, Shanghai Jiao Tong University, Shanghai 200240, China
| | - Yiming Niu
- Shenyang National Laboratory for Materials Science, Institute of Metal Research, Chinese Academy of Sciences, 72 Wenhua Road, Shenyang 110016, China.,School of Materials Science and Engineering, University of Science and Technology of China, 72 Wenhua Road, Shenyang 110016, China
| | - Xi Liu
- School of Chemistry and Chemical Engineering, In-situ Center for Physical Sciences, Shanghai Jiao Tong University, Shanghai 200240, China
| | - Bingsen Zhang
- Shenyang National Laboratory for Materials Science, Institute of Metal Research, Chinese Academy of Sciences, 72 Wenhua Road, Shenyang 110016, China.,School of Materials Science and Engineering, University of Science and Technology of China, 72 Wenhua Road, Shenyang 110016, China
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3
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Chee SW, Lunkenbein T, Schlögl R, Cuenya BR. In situand operandoelectron microscopy in heterogeneous catalysis-insights into multi-scale chemical dynamics. JOURNAL OF PHYSICS. CONDENSED MATTER : AN INSTITUTE OF PHYSICS JOURNAL 2021; 33:153001. [PMID: 33825698 DOI: 10.1088/1361-648x/abddfd] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/09/2020] [Accepted: 01/20/2021] [Indexed: 06/12/2023]
Abstract
This review features state-of-the-artin situandoperandoelectron microscopy (EM) studies of heterogeneous catalysts in gas and liquid environments during reaction. Heterogeneous catalysts are important materials for the efficient production of chemicals/fuels on an industrial scale and for energy conversion applications. They also play a central role in various emerging technologies that are needed to ensure a sustainable future for our society. Currently, the rational design of catalysts has largely been hampered by our lack of insight into the working structures that exist during reaction and their associated properties. However, elucidating the working state of catalysts is not trivial, because catalysts are metastable functional materials that adapt dynamically to a specific reaction condition. The structural or morphological alterations induced by chemical reactions can also vary locally. A complete description of their morphologies requires that the microscopic studies undertaken span several length scales. EMs, especially transmission electron microscopes, are powerful tools for studying the structure of catalysts at the nanoscale because of their high spatial resolution, relatively high temporal resolution, and complementary capabilities for chemical analysis. Furthermore, recent advances have enabled the direct observation of catalysts under realistic environmental conditions using specialized reaction cells. Here, we will critically discuss the importance of spatially-resolvedoperandomeasurements and the available experimental setups that enable (1) correlated studies where EM observations are complemented by separate measurements of reaction kinetics or spectroscopic analysis of chemical species during reaction or (2) real-time studies where the dynamics of catalysts are followed with EM and the catalytic performance is extracted directly from the reaction cell that is within the EM column or chamber. Examples of current research in this field will be presented. Challenges in the experimental application of these techniques and our perspectives on the field's future directions will also be discussed.
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Affiliation(s)
- See Wee Chee
- Department of Interface Science, Fritz Haber Institute of the Max Planck Society, 14195 Berlin, Germany
| | - Thomas Lunkenbein
- Department of Inorganic Chemistry, Fritz Haber Institute of the Max Planck Society, 14195 Berlin, Germany
| | - Robert Schlögl
- Department of Inorganic Chemistry, Fritz Haber Institute of the Max Planck Society, 14195 Berlin, Germany
- Department of Heterogeneous Reactions, Max Planck Institute for Chemical Energy Conversion, 45413 Mülheim an der Ruhr, Germany
| | - Beatriz Roldan Cuenya
- Department of Interface Science, Fritz Haber Institute of the Max Planck Society, 14195 Berlin, Germany
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4
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Han Z, Porter AE. In situ Electron Microscopy of Complex Biological and Nanoscale Systems: Challenges and Opportunities. FRONTIERS IN NANOTECHNOLOGY 2020. [DOI: 10.3389/fnano.2020.606253] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022] Open
Abstract
In situ imaging for direct visualization is important for physical and biological sciences. Research endeavors into elucidating dynamic biological and nanoscale phenomena frequently necessitate in situ and time-resolved imaging. In situ liquid cell electron microscopy (LC-EM) can overcome certain limitations of conventional electron microscopies and offer great promise. This review aims to examine the status-quo and practical challenges of in situ LC-EM and its applications, and to offer insights into a novel correlative technique termed microfluidic liquid cell electron microscopy. We conclude by suggesting a few research ideas adopting microfluidic LC-EM for in situ imaging of biological and nanoscale systems.
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5
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Chemical kinetics for operando electron microscopy of catalysts: 3D modeling of gas and temperature distributions during catalytic reactions. Ultramicroscopy 2020; 218:113080. [PMID: 32795882 DOI: 10.1016/j.ultramic.2020.113080] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2020] [Revised: 07/14/2020] [Accepted: 07/20/2020] [Indexed: 11/21/2022]
Abstract
In situ environmental transmission electron microscopy (ETEM) is a powerful tool for observing structural modifications taking place in heterogeneous catalysts under reaction conditions. However, to strengthen the link between catalyst structure and functionality, an operando measurement must be performed in which reaction kinetics and catalyst structure are simultaneously determined. To determine chemical kinetics for gas-phase catalysis, it is necessary to develop a reliable chemical engineering model to describe catalysis as well as heat and mass transport processes within the ETEM cell. Here, we establish a finite element model to determine the gas and temperature profiles during catalysis in an open-cell operando ETEM experiment. The model is applied to a SiO2-supported Ru catalyst performing CO oxidation. Good agreement is achieved between simulated compositions and those measured experimentally across a temperature range of 25 - 350 °C. In general, for lower conversions, the simulations show that the temperature and gas are relatively homogeneous within the hot zone of the TEM holder where the catalyst is located. The uniformity of gas and temperature indicates that the ETEM reactor system behavior approximates that of a continuously stirred tank reactor (CSTR). The large degree of gas-phase uniformity also allows one to estimate the catalytic conversion of reactants in the cell to within 10% using electron energy-loss spectroscopy. Moreover, the findings indicate that for reactant conversions below 35%, one can reliably evaluate the steady-state reaction rate of catalyst nanoparticles that are imaged on the TEM grid.
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6
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Levin BD, Lawrence EL, Crozier PA. Tracking the picoscale spatial motion of atomic columns during dynamic structural change. Ultramicroscopy 2020; 213:112978. [PMID: 32278963 DOI: 10.1016/j.ultramic.2020.112978] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2019] [Revised: 03/03/2020] [Accepted: 03/15/2020] [Indexed: 10/24/2022]
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7
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Zhu B, Meng J, Yuan W, Zhang X, Yang H, Wang Y, Gao Y. Umformung von Metallnanopartikeln unter Reaktionsbedingungen. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.201906799] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Beien Zhu
- Shanghai Advanced Research InstituteChinese Academy of Sciences 201210 Shanghai China
- Division of Interfacial Water and Key Laboratory of Interfacial Physics and TechnologyShanghai Institute of Applied PhysicsChinese Academy of Sciences Shanghai 201800 China
| | - Jun Meng
- Division of Interfacial Water and Key Laboratory of Interfacial Physics and TechnologyShanghai Institute of Applied PhysicsChinese Academy of Sciences Shanghai 201800 China
- University of Chinese Academy of Sciences Beijing 100049 China
| | - Wentao Yuan
- State Key Laboratory of Silicon MaterialsSchool of Materials Science and EngineeringZhejiang University Hangzhou 310027 China
| | - Xun Zhang
- State Key Laboratory of Silicon MaterialsSchool of Materials Science and EngineeringZhejiang University Hangzhou 310027 China
| | - Hangsheng Yang
- State Key Laboratory of Silicon MaterialsSchool of Materials Science and EngineeringZhejiang University Hangzhou 310027 China
| | - Yong Wang
- State Key Laboratory of Silicon MaterialsSchool of Materials Science and EngineeringZhejiang University Hangzhou 310027 China
| | - Yi Gao
- Shanghai Advanced Research InstituteChinese Academy of Sciences 201210 Shanghai China
- Division of Interfacial Water and Key Laboratory of Interfacial Physics and TechnologyShanghai Institute of Applied PhysicsChinese Academy of Sciences Shanghai 201800 China
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8
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Zhu B, Meng J, Yuan W, Zhang X, Yang H, Wang Y, Gao Y. Reshaping of Metal Nanoparticles Under Reaction Conditions. Angew Chem Int Ed Engl 2020; 59:2171-2180. [DOI: 10.1002/anie.201906799] [Citation(s) in RCA: 29] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2019] [Revised: 07/10/2019] [Indexed: 01/09/2023]
Affiliation(s)
- Beien Zhu
- Shanghai Advanced Research InstituteChinese Academy of Sciences 201210 Shanghai China
- Division of Interfacial Water and Key Laboratory of Interfacial Physics and TechnologyShanghai Institute of Applied PhysicsChinese Academy of Sciences Shanghai 201800 China
| | - Jun Meng
- Division of Interfacial Water and Key Laboratory of Interfacial Physics and TechnologyShanghai Institute of Applied PhysicsChinese Academy of Sciences Shanghai 201800 China
- University of Chinese Academy of Sciences Beijing 100049 China
| | - Wentao Yuan
- State Key Laboratory of Silicon MaterialsSchool of Materials Science and EngineeringZhejiang University Hangzhou 310027 China
| | - Xun Zhang
- State Key Laboratory of Silicon MaterialsSchool of Materials Science and EngineeringZhejiang University Hangzhou 310027 China
| | - Hangsheng Yang
- State Key Laboratory of Silicon MaterialsSchool of Materials Science and EngineeringZhejiang University Hangzhou 310027 China
| | - Yong Wang
- State Key Laboratory of Silicon MaterialsSchool of Materials Science and EngineeringZhejiang University Hangzhou 310027 China
| | - Yi Gao
- Shanghai Advanced Research InstituteChinese Academy of Sciences 201210 Shanghai China
- Division of Interfacial Water and Key Laboratory of Interfacial Physics and TechnologyShanghai Institute of Applied PhysicsChinese Academy of Sciences Shanghai 201800 China
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9
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Lawrence EL, Levin BDA, Miller BK, Crozier PA. Approaches to Exploring Spatio-Temporal Surface Dynamics in Nanoparticles with In Situ Transmission Electron Microscopy. MICROSCOPY AND MICROANALYSIS : THE OFFICIAL JOURNAL OF MICROSCOPY SOCIETY OF AMERICA, MICROBEAM ANALYSIS SOCIETY, MICROSCOPICAL SOCIETY OF CANADA 2020; 26:86-94. [PMID: 31858934 DOI: 10.1017/s1431927619015228] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Many nanoparticles in fields such as heterogeneous catalysis undergo surface structural fluctuations during chemical reactions, which may control functionality. These dynamic structural changes may be ideally investigated with time-resolved in situ electron microscopy. We have explored approaches for extracting quantitative information from large time-resolved image data sets with a low signal to noise recorded with a direct electron detector on an aberration-corrected transmission electron microscope. We focus on quantitatively characterizing beam-induced dynamic structural rearrangements taking place on the surface of CeO2 (ceria). A 2D Gaussian fitting procedure is employed to determine the position and occupancy of each atomic column in the nanoparticle with a temporal resolution of 2.5 ms and a spatial precision of 0.25 Å. Local rapid lattice expansions/contractions and atomic migration were revealed to occur on the (100) surface, whereas (111) surfaces were relatively stable throughout the experiment. The application of this methodology to other materials will provide new insights into the behavior of nanoparticle surface reconstructions that were previously inaccessible using other methods, which will have important consequences for the understanding of dynamic structure-property relationships.
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Affiliation(s)
- Ethan L Lawrence
- School for the Engineering of Matter, Transport and Energy, Arizona State University, Tempe, AZ85287, USA
| | - Barnaby D A Levin
- School for the Engineering of Matter, Transport and Energy, Arizona State University, Tempe, AZ85287, USA
| | | | - Peter A Crozier
- School for the Engineering of Matter, Transport and Energy, Arizona State University, Tempe, AZ85287, USA
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10
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Du J, Meng J, Li XY, Zhu B, Gao Y. Multiscale atomistic simulation of metal nanoparticles under working conditions. NANOSCALE ADVANCES 2019; 1:2478-2484. [PMID: 36132725 PMCID: PMC9419150 DOI: 10.1039/c9na00196d] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/29/2019] [Accepted: 06/10/2019] [Indexed: 06/10/2023]
Abstract
With the fast development of in situ experimental methodologies, dramatic structure reconstructions of nanomaterials that only occur under reaction conditions have been discovered in recent years, which are critical for their application in catalysis, biomedicine, and biosensors. A big challenge for theoreticians is thus to establish reliable models to reproduce the experimental observations quantitatively, and further to make predictions beyond experimental conditions. Herein, we briefly summarize the recent theoretical advances involving the quantitative predictions of equilibrium shapes of metal nanoparticles under reaction conditions and the real-time simulations of nanocrystal transformations. The comparisons between the theoretical and experimental results are presented. This minireview not only helps researchers understand the in situ observations at the atomic level, but also is beneficial for prescreening and optimizing the NPs for practical use.
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Affiliation(s)
- Jifeng Du
- Division of Interfacial Water and Key Laboratory of Interfacial Physics and Technology Shanghai Institute of Applied Physics, Chinese Academy of Sciences Shanghai 201800 China
- University of Chinese Academy of Sciences Beijing 100049 China
| | - Jun Meng
- Division of Interfacial Water and Key Laboratory of Interfacial Physics and Technology Shanghai Institute of Applied Physics, Chinese Academy of Sciences Shanghai 201800 China
- University of Chinese Academy of Sciences Beijing 100049 China
| | - Xiao-Yan Li
- Division of Interfacial Water and Key Laboratory of Interfacial Physics and Technology Shanghai Institute of Applied Physics, Chinese Academy of Sciences Shanghai 201800 China
- University of Chinese Academy of Sciences Beijing 100049 China
| | - Beien Zhu
- Division of Interfacial Water and Key Laboratory of Interfacial Physics and Technology Shanghai Institute of Applied Physics, Chinese Academy of Sciences Shanghai 201800 China
- Zhangjiang Laboratory, Shanghai Advanced Research Institute, Chinese Academy of Sciences Shanghai 201210 China
| | - Yi Gao
- Division of Interfacial Water and Key Laboratory of Interfacial Physics and Technology Shanghai Institute of Applied Physics, Chinese Academy of Sciences Shanghai 201800 China
- Zhangjiang Laboratory, Shanghai Advanced Research Institute, Chinese Academy of Sciences Shanghai 201210 China
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11
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Kamiuchi N, Sun K, Aso R, Tane M, Tamaoka T, Yoshida H, Takeda S. Self-activated surface dynamics in gold catalysts under reaction environments. Nat Commun 2018; 9:2060. [PMID: 29802253 PMCID: PMC5970267 DOI: 10.1038/s41467-018-04412-4] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2017] [Accepted: 04/26/2018] [Indexed: 11/11/2022] Open
Abstract
Nanoporous gold (NPG) with sponge-like structures has been studied by atomic-scale and microsecond-resolution environmental transmission electron microscopy (ETEM) combined with ab initio energy calculations. Peculiar surface dynamics were found in the reaction environment for the oxidation of CO at room temperature, involving residual silver in the NPG leaves as well as gold and oxygen atoms, especially on {110} facets. The NPG is thus classified as a novel self-activating catalyst. The essential structure unit for catalytic activity was identified as Au–AgO surface clusters, implying that the NPG is regarded as a nano-structured silver oxide catalyst supported on the matrix of NPG, or an inverse catalyst of a supported gold nanoparticulate (AuNP) catalyst. Hence, the catalytically active structure in the gold catalysts (supported AuNP and NPG catalysts) can now be experimentally unified in low-temperature CO oxidation, a step forward towards elucidating the fascinating catalysis mechanism of gold. Nanoporous gold (NPG) has gained significant attention, but its catalytically active structure has not yet been clarified. Here, the authors identify the catalytically active and dynamic structure in NPG by combining atomic-scale and microsecond-resolution environmental transmission electron microscopy with ab initio calculations.
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Affiliation(s)
- Naoto Kamiuchi
- The Institute of Scientific and Industrial Research, Osaka University, 8-1 Mihogaoka, Ibaraki, Osaka, 567-0047, Japan
| | - Keju Sun
- The Institute of Scientific and Industrial Research, Osaka University, 8-1 Mihogaoka, Ibaraki, Osaka, 567-0047, Japan.,Research Institute for Ubiquitous Energy Devices, National Institute of Advanced Industrial Science and Technology (AIST), 1-8-31, Midorigaoka, Ikeda, Osaka, 563-8577, Japan.,Key Laboratory of Applied Chemistry, College of Environmental and Chemical Engineering, Yanshan University, 438 Hebei Avenue, Qinhuangdao, 066004 Hebei, China
| | - Ryotaro Aso
- The Institute of Scientific and Industrial Research, Osaka University, 8-1 Mihogaoka, Ibaraki, Osaka, 567-0047, Japan
| | - Masakazu Tane
- The Institute of Scientific and Industrial Research, Osaka University, 8-1 Mihogaoka, Ibaraki, Osaka, 567-0047, Japan
| | - Takehiro Tamaoka
- The Institute of Scientific and Industrial Research, Osaka University, 8-1 Mihogaoka, Ibaraki, Osaka, 567-0047, Japan
| | - Hideto Yoshida
- The Institute of Scientific and Industrial Research, Osaka University, 8-1 Mihogaoka, Ibaraki, Osaka, 567-0047, Japan
| | - Seiji Takeda
- The Institute of Scientific and Industrial Research, Osaka University, 8-1 Mihogaoka, Ibaraki, Osaka, 567-0047, Japan.
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12
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Nguyen L, Hashimoto T, Zakharov DN, Stach EA, Rooney AP, Berkels B, Thompson GE, Haigh SJ, Burnett TL. Atomic-Scale Insights into the Oxidation of Aluminum. ACS APPLIED MATERIALS & INTERFACES 2018; 10:2230-2235. [PMID: 29319290 DOI: 10.1021/acsami.7b17224] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
The surface oxidation of aluminum is still poorly understood despite its vital role as an insulator in electronics, in aluminum-air batteries, and in protecting the metal against corrosion. Here we use atomic resolution imaging in an environmental transmission electron microscope (TEM) to investigate the mechanism of aluminum oxide formation. Harnessing electron beam sputtering we prepare a pristine, oxide-free metal surface in the TEM. This allows us to study, as a function of crystallographic orientation and oxygen gas pressure, the full oxide growth regime from the first oxide nucleation to a complete saturated, few-nanometers-thick surface film.
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Affiliation(s)
- Lan Nguyen
- School of Materials, University of Manchester , Oxford Road, Manchester M13 9PL, United Kingdom
| | - Teruo Hashimoto
- School of Materials, University of Manchester , Oxford Road, Manchester M13 9PL, United Kingdom
| | - Dmitri N Zakharov
- Center for Functional Nanomaterials, Brookhaven National Laboratory , Upton, New York 11973, United States
| | - Eric A Stach
- Center for Functional Nanomaterials, Brookhaven National Laboratory , Upton, New York 11973, United States
- University of Pennsylvania , Laboratory for Research on the Structure of Matter, 3231 Walnut Street, Philadelphia, Pennsylvania 191041, United States
| | - Aidan P Rooney
- School of Materials, University of Manchester , Oxford Road, Manchester M13 9PL, United Kingdom
| | - Benjamin Berkels
- Department of Mathematics, RWTH Aachen University , Schinkelstrasse 2, 52062 Aachen, Germany
| | - George E Thompson
- School of Materials, University of Manchester , Oxford Road, Manchester M13 9PL, United Kingdom
| | - Sarah J Haigh
- School of Materials, University of Manchester , Oxford Road, Manchester M13 9PL, United Kingdom
| | - Tim L Burnett
- School of Materials, University of Manchester , Oxford Road, Manchester M13 9PL, United Kingdom
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13
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Engelhardt CM, Kennedy RM, Enterkin JA, Poeppelmeier KR, Ellis DE, Marshall CL, Stair PC. Structure Sensitivity of Acrolein Hydrogenation by Platinum Nanoparticles on Ba
x
Sr
1−
x
TiO
3
Nanocuboids. ChemCatChem 2018. [DOI: 10.1002/cctc.201701505] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
| | - Robert M. Kennedy
- Department of Chemistry Northwestern University Evanston IL 60208 USA
| | - James A. Enterkin
- Chemical Sciences and Engineering Division Argonne National Laboratory Lemont IL USA
| | - Kenneth R. Poeppelmeier
- Department of Chemistry Northwestern University Evanston IL 60208 USA
- Chemical Sciences and Engineering Division Argonne National Laboratory Lemont IL USA
| | - Donald E. Ellis
- Applied Physics Program Northwestern University Evanston IL 60208 USA
- Department of Chemistry Northwestern University Evanston IL 60208 USA
| | | | - Peter C. Stair
- Department of Chemistry Northwestern University Evanston IL 60208 USA
- Chemical Sciences and Engineering Division Argonne National Laboratory Lemont IL USA
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14
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Ramade J, Langlois C, Pellarin M, Piccolo L, Lebeault MA, Epicier T, Aouine M, Cottancin E. Tracking the restructuring of oxidized silver-indium nanoparticles under a reducing atmosphere by environmental HRTEM. NANOSCALE 2017; 9:13563-13574. [PMID: 28876014 DOI: 10.1039/c7nr02986a] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Multimetallic nano-alloys display a structure and consequently physicochemical properties evolving in a reactive environment. Following and understanding this evolution is therefore crucial for future applications in gas sensing and heterogeneous catalysis. In view hereof, the structural evolution of oxidized Ag25In75 bimetallic nanoparticles under varying H2 partial pressures (PH2) and substrate temperatures (Ts) has been investigated in real-time through environmental transmission microscopy (E-TEM) while maintaining the atomic resolution. Small Ag25In75 bimetallic nanoparticles, produced by laser vaporization, are found (after air transfer) to contain an indium-oxide shell surrounding a silver-rich alloyed phase. For high PH2 and Ts, the direct reduction of the indium oxide shell, immediately followed by the melting or the diffusion onto the carbon substrate of the reduced indium atoms, is found to be the dominant mechanism. This reduction is concomitant with the growth of the core, indicating a partial diffusion of indium atoms from the shell towards the particle volume. The "surviving" particles therefore consist of a silver-indium alloy, very stable and remarkably resistant against oxidation contrary to native clusters. Interestingly, in the (PH2, Ts) space, the transition from "soft" (core-shell particles for low (PH2, Ts) values) to "strong" reduction conditions (silver-rich alloys for high (PH2, Ts) products) defines an intermediate domain where the preferred formation of Janus structures is detected. These results are discussed in terms of thermodynamic driving forces in relation to alloying and interface energies. This work shows the potential of high-resolution ETEM for unravelling the mechanisms of nanoparticle reorganization in a chemically reactive environment.
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Affiliation(s)
- Julien Ramade
- Univ. Lyon, Université Claude Bernard Lyon 1, CNRS, Institut Lumière Matière, F-69622 Villeurbanne, France.
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15
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Melinte G, Moldovan S, Hirlimann C, Baaziz W, Bégin-Colin S, Pham-Huu C, Ersen O. Catalytic Nanopatterning of Few-Layer Graphene. ACS Catal 2017. [DOI: 10.1021/acscatal.7b01777] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Georgian Melinte
- Institut
de Physique et Chimie des Matériaux de Strasbourg (IPCMS), Université de Strasbourg, UMR 7504 CNRS, 23, rue du Lœss, 67037 cedex 2, Strasbourg, France
- Institut
de Chimie et Procédés pour l’Énergie,
l’Environnement et la Santé (ICPEES), Université de Strasbourg, UMR 7515 CNRS, ECPM, 25, rue Becquerel, 67087 cedex 8, Strasbourg, France
- University of Strasbourg, Institute for Advanced Studies
(USIAS), 5 Allée
Gen Rouvillois, F-67083 Strasbourg, France
| | - Simona Moldovan
- Institut
de Physique et Chimie des Matériaux de Strasbourg (IPCMS), Université de Strasbourg, UMR 7504 CNRS, 23, rue du Lœss, 67037 cedex 2, Strasbourg, France
- Groupe
de Physique des Matériaux (GPM) UMR CNRS 6634, Université de Rouen, INSA Rouen, Avenue de l’Université - BP12, 76801 Saint Etienne du Rouvray, France
| | - Charles Hirlimann
- Institut
de Physique et Chimie des Matériaux de Strasbourg (IPCMS), Université de Strasbourg, UMR 7504 CNRS, 23, rue du Lœss, 67037 cedex 2, Strasbourg, France
| | - Walid Baaziz
- Institut
de Physique et Chimie des Matériaux de Strasbourg (IPCMS), Université de Strasbourg, UMR 7504 CNRS, 23, rue du Lœss, 67037 cedex 2, Strasbourg, France
- Institut
de Chimie et Procédés pour l’Énergie,
l’Environnement et la Santé (ICPEES), Université de Strasbourg, UMR 7515 CNRS, ECPM, 25, rue Becquerel, 67087 cedex 8, Strasbourg, France
| | - Sylvie Bégin-Colin
- Institut
de Physique et Chimie des Matériaux de Strasbourg (IPCMS), Université de Strasbourg, UMR 7504 CNRS, 23, rue du Lœss, 67037 cedex 2, Strasbourg, France
| | - Cuong Pham-Huu
- Institut
de Chimie et Procédés pour l’Énergie,
l’Environnement et la Santé (ICPEES), Université de Strasbourg, UMR 7515 CNRS, ECPM, 25, rue Becquerel, 67087 cedex 8, Strasbourg, France
| | - Ovidiu Ersen
- Institut
de Physique et Chimie des Matériaux de Strasbourg (IPCMS), Université de Strasbourg, UMR 7504 CNRS, 23, rue du Lœss, 67037 cedex 2, Strasbourg, France
- University of Strasbourg, Institute for Advanced Studies
(USIAS), 5 Allée
Gen Rouvillois, F-67083 Strasbourg, France
- Institut Universitaire de France (IUF), 1 rue Descartes, 75231 Paris, France
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16
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ROIBAN L, LI S, AOUINE M, TUEL A, FARRUSSENG D, EPICIER T. Fast ‘Operando
’ electron nanotomography. J Microsc 2017; 269:117-126. [DOI: 10.1111/jmi.12557] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2016] [Accepted: 02/21/2017] [Indexed: 11/30/2022]
Affiliation(s)
- L. ROIBAN
- Univ Lyon, INSA-Lyon; Université Claude Bernard Lyon I; MATEIS, UMR5510 CNRS Villeurbanne Cedex France
| | - S. LI
- Univ Lyon; Université Claude Bernard Lyon I; Ircelyon, UMR5256 CNRS Villeurbanne France
| | - M. AOUINE
- Univ Lyon; Université Claude Bernard Lyon I; Ircelyon, UMR5256 CNRS Villeurbanne France
| | - A. TUEL
- Univ Lyon; Université Claude Bernard Lyon I; Ircelyon, UMR5256 CNRS Villeurbanne France
| | - D. FARRUSSENG
- Univ Lyon; Université Claude Bernard Lyon I; Ircelyon, UMR5256 CNRS Villeurbanne France
| | - T. EPICIER
- Univ Lyon, INSA-Lyon; Université Claude Bernard Lyon I; MATEIS, UMR5510 CNRS Villeurbanne Cedex France
- Univ Lyon; Université Claude Bernard Lyon I; Ircelyon, UMR5256 CNRS Villeurbanne France
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17
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Li J, Jia Y, Xu Y, Yang H, Sun LD, Yan CH, Bie LJ, Ju J. In situepitaxial growth of GdF3on NaGdF4:Yb,Er nanoparticles. Inorg Chem Front 2017. [DOI: 10.1039/c7qi00527j] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
By electron-beam irradiation of TEM, GdF3(020) was epitaxially grown on the interface of NaGdF4(111).
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Affiliation(s)
- Jiangfeng Li
- School of Materials Science and Engineering
- Tianjin University of Technology
- Tianjin 300384
- China
- College of Chemistry and Molecular Engineering
| | - Yunling Jia
- College of Chemistry and Molecular Engineering
- Peking University
- Beijing 100871
- China
| | - Yuejiao Xu
- College of Chemistry and Molecular Engineering
- Peking University
- Beijing 100871
- China
| | - Hui Yang
- Capital Medical University
- Beijing 100069
- China
| | - Ling-dong Sun
- College of Chemistry and Molecular Engineering
- Peking University
- Beijing 100871
- China
| | - Chun-hua Yan
- College of Chemistry and Molecular Engineering
- Peking University
- Beijing 100871
- China
| | - Li-jian Bie
- School of Materials Science and Engineering
- Tianjin University of Technology
- Tianjin 300384
- China
| | - Jing Ju
- College of Chemistry and Molecular Engineering
- Peking University
- Beijing 100871
- China
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18
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Uchiyama T, Yoshida H, Kamiuchi N, Kohno H, Takeda S. Revealing the heterogeneous contamination process in metal nanoparticulate catalysts in CO gas without purification byin situenvironmental transmission electron microscopy. Microscopy (Oxf) 2016; 65:522-526. [DOI: 10.1093/jmicro/dfw039] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2016] [Accepted: 08/10/2016] [Indexed: 11/13/2022] Open
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19
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Aouine M, Epicier T, Millet JMM. In Situ Environmental STEM Study of the MoVTe Oxide M1 Phase Catalysts for Ethane Oxidative Dehydrogenation. ACS Catal 2016. [DOI: 10.1021/acscatal.6b01114] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Mimoun Aouine
- Institut
de Recherches sur la Catalyse et l’Environnement de Lyon, IRCELYON, UMR5256 CNRS-Université Claude Bernard, Lyon I, 2 avenue A. Einstein, 69626 Villeurbanne Cedex, France
| | - Thierry Epicier
- Institut
de Recherches sur la Catalyse et l’Environnement de Lyon, IRCELYON, UMR5256 CNRS-Université Claude Bernard, Lyon I, 2 avenue A. Einstein, 69626 Villeurbanne Cedex, France
- Université de Lyon, INSA Lyon, MATEIS, UMR CNRS 5510, 7, avenue Jean-Capelle, 69621 Villeurbanne Cedex, France
| | - Jean-Marc M. Millet
- Institut
de Recherches sur la Catalyse et l’Environnement de Lyon, IRCELYON, UMR5256 CNRS-Université Claude Bernard, Lyon I, 2 avenue A. Einstein, 69626 Villeurbanne Cedex, France
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20
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Ek M, Jespersen SPF, Damsgaard CD, Helveg S. On the role of the gas environment, electron-dose-rate, and sample on the image resolution in transmission electron microscopy. ACTA ACUST UNITED AC 2016. [DOI: 10.1186/s40679-016-0018-x] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Abstract
AbstractThe introduction of gaseous atmospheres in transmission electron microscopy offers the possibility of studying materials in situ under chemically relevant environments. The presence of a gas environment can degrade the resolution. Surprisingly, this phenomenon has been shown to depend on the electron-dose-rate. In this article, we demonstrate that both the total and areal electron-dose-rates work as descriptors for the dose-rate-dependent resolution and are related through the illumination area. Furthermore, the resolution degradation was observed to occur gradually over time after initializing the illumination of the sample and gas by the electron beam. The resolution was also observed to be sensitive to the electrical conductivity of the sample. These observations can be explained by a charge buildup over the electron-illuminated sample area, caused by the beam–gas–sample interaction, and by a subsequent sample motion induced by electrical capacitance in the sample.
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21
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Tao F(F, Crozier PA. Atomic-Scale Observations of Catalyst Structures under Reaction Conditions and during Catalysis. Chem Rev 2016; 116:3487-539. [DOI: 10.1021/cr5002657] [Citation(s) in RCA: 203] [Impact Index Per Article: 25.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Affiliation(s)
- Franklin (Feng) Tao
- Department
of Chemical and Petroleum Engineering, University of Kansas, Lawrence, Kansas 66045, United States
- Department
of Chemistry, University of Kansas, Lawrence, Kansas 66045, United States
| | - Peter A. Crozier
- School
of Engineering of Matter, Transport and Energy, Arizona State University, Tempe, Arizona 85287, United States
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22
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The correction of electron lens aberrations. Ultramicroscopy 2015; 156:A1-64. [PMID: 26025209 DOI: 10.1016/j.ultramic.2015.03.007] [Citation(s) in RCA: 61] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2014] [Revised: 03/07/2015] [Accepted: 03/12/2015] [Indexed: 11/23/2022]
Abstract
The progress of electron lens aberration correction from about 1990 onwards is chronicled. Reasonably complete lists of publications on this and related topics are appended. A present for Max Haider and Ondrej Krivanek in the year of their 65th birthdays. By a happy coincidence, this review was completed in the year that both Max Haider and Ondrej Krivanek reached the age of 65. It is a pleasure to dedicate it to the two leading actors in the saga of aberration corrector design and construction. They would both wish to associate their colleagues with such a tribute but it is the names of Haider and Krivanek (not forgetting Joachim Zach) that will remain in the annals of electron optics, next to that of Harald Rose. I am proud to know that both regard me as a friend as well as a colleague.
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