1
|
Kim D, Lim H, Seo M, Shin H, Kim K, Jung M, Jang S, Chae B, Park B, Lee J, Choi Y, Kim KJ, Kim J, Tong X, Hunt A, Waluyo I, Mun BS. Study of CO 2 Adsorption Properties on the SrTiO 3(001) Surface with Ambient Pressure XPS. ACS APPLIED MATERIALS & INTERFACES 2024; 16:38679-38689. [PMID: 38982984 DOI: 10.1021/acsami.4c04729] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 07/11/2024]
Abstract
The adsorption properties of CO2 on the SrTiO3(001) surface were investigated using ambient pressure X-ray photoelectron spectroscopy under elevated pressure and temperature conditions. On the Nb-doped TiO2-enriched (1 × 1) SrTiO3 surface, CO2 adsorption, i.e., the formation of CO3 surface species, occurs first at the oxygen lattice site under 10-6 mbar CO2 at room temperature. The interaction of CO2 molecules with oxygen vacancies begins when the CO2 pressure increases to 0.25 mbar. The adsorbed CO3 species on the Nb-doped SrTiO3 surface increases continuously as the pressure increases but starts to leave the surface as the surface temperature increases, which occurs at approximately 373 K on the defect-free surface. On the undoped TiO2-enriched (1 × 1) SrTiO3 surface, CO2 adsorption also occurs first at the lattice oxygen sites. Both the doped and undoped SrTiO3 surfaces exhibit an enhancement of the CO3 species with the presence of oxygen vacancies, thus indicating the important role of oxygen vacancies in CO2 dissociation. When OH species are removed from the undoped SrTiO3 surface, the CO3 species begin to form under 10-6 mbar at 573 K, thus indicating the critical role of OH in preventing CO2 adsorption. The observed CO2 adsorption properties of the various SrTiO3 surfaces provide valuable information for designing SrTiO3-based CO2 catalysts.
Collapse
Affiliation(s)
- Dongwoo Kim
- Department of Physics and Photon Science, Gwangju Institute of Science and Technology, Gwangju 61005, Republic of Korea
| | - Hojoon Lim
- National Synchrotron Light Source II, Brookhaven National Laboratory, Upton, New York 11973, United States
- Chemistry Division, Brookhaven National Laboratory, Upton, New York 11973, United States
| | - Minsik Seo
- Department of Physics and Photon Science, Gwangju Institute of Science and Technology, Gwangju 61005, Republic of Korea
| | - Hyunsuk Shin
- Department of Physics and Photon Science, Gwangju Institute of Science and Technology, Gwangju 61005, Republic of Korea
| | - Kyungmin Kim
- Department of Physics and Photon Science, Gwangju Institute of Science and Technology, Gwangju 61005, Republic of Korea
| | - Moonjung Jung
- Department of Physics and Photon Science, Gwangju Institute of Science and Technology, Gwangju 61005, Republic of Korea
| | - Subin Jang
- Department of Physics and Photon Science, Gwangju Institute of Science and Technology, Gwangju 61005, Republic of Korea
| | - Byunghyun Chae
- Gwangju Science Academy for the Gifted, Gwangju 61005, Republic of Korea
| | - Buseung Park
- Gwangju Science Academy for the Gifted, Gwangju 61005, Republic of Korea
| | - Jungwoo Lee
- Gwangju Science Academy for the Gifted, Gwangju 61005, Republic of Korea
| | - Yongseok Choi
- Gwangju Science Academy for the Gifted, Gwangju 61005, Republic of Korea
| | - Ki-Jeong Kim
- Pohang Accelerator Laboratory, POSTECH, Pohang-si, Gyeongsangbuk-do 37673, Republic of Korea
| | - Jeongjin Kim
- Pohang Accelerator Laboratory, POSTECH, Pohang-si, Gyeongsangbuk-do 37673, Republic of Korea
| | - Xiao Tong
- Center for Functional Nanomaterials, Brookhaven National Laboratory, Upton, New York 11973, United States
| | - Adrian Hunt
- National Synchrotron Light Source II, Brookhaven National Laboratory, Upton, New York 11973, United States
| | - Iradwikanari Waluyo
- National Synchrotron Light Source II, Brookhaven National Laboratory, Upton, New York 11973, United States
| | - Bongjin Simon Mun
- Department of Physics and Photon Science, Gwangju Institute of Science and Technology, Gwangju 61005, Republic of Korea
| |
Collapse
|
2
|
Yang M, Pártay LB, Wexler RB. Surface phase diagrams from nested sampling. Phys Chem Chem Phys 2024; 26:13862-13874. [PMID: 38659377 DOI: 10.1039/d4cp00050a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/26/2024]
Abstract
Studies in atomic-scale modeling of surface phase equilibria often focus on temperatures near zero Kelvin due to the challenges in calculating the free energy of surfaces at finite temperatures. The Bayesian-inference-based nested sampling (NS) algorithm allows for modeling phase equilibria at arbitrary temperatures by directly and efficiently calculating the partition function, whose relationship with free energy is well known. This work extends NS to calculate adsorbate phase diagrams, incorporating all relevant configurational contributions to the free energy. We apply NS to the adsorption of Lennard-Jones (LJ) gas particles on low-index and vicinal LJ solid surfaces and construct the canonical partition function from these recorded energies to calculate ensemble averages of thermodynamic properties, such as the constant-volume heat capacity and order parameters that characterize the structure of adsorbate phases. Key results include determining the nature of phase transitions of adsorbed LJ particles on flat and stepped LJ surfaces, which typically feature an enthalpy-driven condensation at higher temperatures and an entropy-driven reordering process at lower temperatures, and the effect of surface geometry on the presence of triple points in the phase diagrams. Overall, we demonstrate the ability and potential of NS for surface modeling.
Collapse
Affiliation(s)
- Mingrui Yang
- Department of Chemistry and Institute of Materials Science and Engineering, Washington University in St. Louis, St. Louis, MO 63130, USA.
| | - Livia B Pártay
- Department of Chemistry, University of Warwick, Coventry, CV4 7AL, UK
| | - Robert B Wexler
- Department of Chemistry and Institute of Materials Science and Engineering, Washington University in St. Louis, St. Louis, MO 63130, USA.
| |
Collapse
|
3
|
Zhou B, Gao R, Zou JJ, Yang H. Surface Design Strategy of Catalysts for Water Electrolysis. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2022; 18:e2202336. [PMID: 35665595 DOI: 10.1002/smll.202202336] [Citation(s) in RCA: 59] [Impact Index Per Article: 29.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/14/2022] [Indexed: 06/15/2023]
Abstract
Hydrogen, a new energy carrier that can replace traditional fossil fuels, is seen as one of the most promising clean energy sources. The use of renewable electricity to drive hydrogen production has very broad prospects for addressing energy and environmental problems. Therefore, many researchers favor electrolytic water due to its green and low-cost advantages. The electrolytic water reaction comprises the oxygen evolution reaction (OER) and the hydrogen evolution reaction (HER). Understanding the OER and HER mechanisms in acidic and alkaline processes contributes to further studying the design of surface regulation of electrolytic water catalysts. The OER and HER catalysts are mainly reviewed for defects, doping, alloying, surface reconstruction, crystal surface structure, and heterostructures. Besides, recent catalysts for overall water splitting are also reviewed. Finally, this review paves the way to the rational design and synthesis of new materials for highly efficient electrocatalysis.
Collapse
Affiliation(s)
- Binghui Zhou
- Engineering Research Center of Nano-Geomaterials of Ministry of Education, China University of Geosciences, Wuhan, 430074, China
- Faculty of Materials Science and Chemistry, China University of Geosciences, Wuhan, 430074, China
| | - Ruijie Gao
- Engineering Research Center of Nano-Geomaterials of Ministry of Education, China University of Geosciences, Wuhan, 430074, China
- Faculty of Materials Science and Chemistry, China University of Geosciences, Wuhan, 430074, China
| | - Ji-Jun Zou
- Key Laboratory for Green Chemical Technology of the Ministry of Education, School of Chemical Engineering and Technology, Tianjin University, Tianjin, 200237, China
| | - Huaming Yang
- Engineering Research Center of Nano-Geomaterials of Ministry of Education, China University of Geosciences, Wuhan, 430074, China
- Faculty of Materials Science and Chemistry, China University of Geosciences, Wuhan, 430074, China
- Key Laboratory for Green Chemical Technology of the Ministry of Education, School of Chemical Engineering and Technology, Tianjin University, Tianjin, 200237, China
- School of Minerals Processing and Bioengineering, Central South University, Changsha, 410083, China
- Hunan Key Lab of Mineral Materials and Application, Central South University, Changsha, 410083, China
- State Key Lab of Powder Metallurgy, Central South University, Changsha, 410083, China
| |
Collapse
|
4
|
Arandiyan H, S Mofarah S, Sorrell CC, Doustkhah E, Sajjadi B, Hao D, Wang Y, Sun H, Ni BJ, Rezaei M, Shao Z, Maschmeyer T. Defect engineering of oxide perovskites for catalysis and energy storage: synthesis of chemistry and materials science. Chem Soc Rev 2021; 50:10116-10211. [PMID: 34542117 DOI: 10.1039/d0cs00639d] [Citation(s) in RCA: 56] [Impact Index Per Article: 18.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
Oxide perovskites have emerged as an important class of materials with important applications in many technological areas, particularly thermocatalysis, electrocatalysis, photocatalysis, and energy storage. However, their implementation faces numerous challenges that are familiar to the chemist and materials scientist. The present work surveys the state-of-the-art by integrating these two viewpoints, focusing on the critical role that defect engineering plays in the design, fabrication, modification, and application of these materials. An extensive review of experimental and simulation studies of the synthesis and performance of oxide perovskites and devices containing these materials is coupled with exposition of the fundamental and applied aspects of defect equilibria. The aim of this approach is to elucidate how these issues can be integrated in order to shed light on the interpretation of the data and what trajectories are suggested by them. This critical examination has revealed a number of areas in which the review can provide a greater understanding. These include considerations of (1) the nature and formation of solid solutions, (2) site filling and stoichiometry, (3) the rationale for the design of defective oxide perovskites, and (4) the complex mechanisms of charge compensation and charge transfer. The review concludes with some proposed strategies to address the challenges in the future development of oxide perovskites and their applications.
Collapse
Affiliation(s)
- Hamidreza Arandiyan
- Laboratory of Advanced Catalysis for Sustainability, School of Chemistry, University of Sydney, Sydney, NSW 2006, Australia. .,Centre for Applied Materials and Industrial Chemistry (CAMIC), School of Science, RMIT University, 124 La Trobe Street, Melbourne, VIC, Australia.
| | - Sajjad S Mofarah
- School of Materials Science and Engineering, UNSW Sydney, Sydney, NSW 2052, Australia.
| | - Charles C Sorrell
- School of Materials Science and Engineering, UNSW Sydney, Sydney, NSW 2052, Australia.
| | - Esmail Doustkhah
- National Institute for Materials Science (NIMS), 1-1 Namiki, Tsukuba, Ibaraki, 305-0044, Japan
| | - Baharak Sajjadi
- Department of Chemical Engineering, University of Mississippi, University, MS, 38677, USA
| | - Derek Hao
- School of Civil and Environmental Engineering, University of Technology Sydney, Sydney, NSW 2007, Australia
| | - Yuan Wang
- Centre for Applied Materials and Industrial Chemistry (CAMIC), School of Science, RMIT University, 124 La Trobe Street, Melbourne, VIC, Australia. .,School of Chemistry, UNSW Sydney, Sydney, NSW 2052, Australia
| | - Hongyu Sun
- Department of Micro- and Nanotechnology, Technical University of Denmark, Kongens Lyngby 2800, Denmark
| | - Bing-Jie Ni
- School of Civil and Environmental Engineering, University of Technology Sydney, Sydney, NSW 2007, Australia
| | - Mehran Rezaei
- Catalyst and Nanomaterials Research Laboratory (CNMRL), School of Chemical, Petroleum and Gas Engineering, Iran University of Science and Technology, Tehran, Iran
| | - Zongping Shao
- WA School of Mines: Minerals, Energy and Chemical Engineering, Curtin University, Perth, WA 6845, Australia. .,State Key Laboratory of Materials-Oriented Chemical Engineering, College of Chemical Engineering, Nanjing Tech University, Nanjing, 210009, China
| | - Thomas Maschmeyer
- Laboratory of Advanced Catalysis for Sustainability, School of Chemistry, University of Sydney, Sydney, NSW 2006, Australia.
| |
Collapse
|
5
|
Banerjee S, Kakekhani A, Wexler RB, Rappe AM. Mechanistic Insights into CO 2 Electroreduction on Ni 2P: Understanding Its Selectivity toward Multicarbon Products. ACS Catal 2021. [DOI: 10.1021/acscatal.1c03639] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Sayan Banerjee
- Department of Chemistry, University of Pennsylvania, Philadelphia, Pennsylvania 19104-6323, United States
| | - Arvin Kakekhani
- Department of Chemistry, University of Pennsylvania, Philadelphia, Pennsylvania 19104-6323, United States
| | - Robert B. Wexler
- Department of Mechanical and Aerospace Engineering, Princeton University, Princeton, New Jersey 08544, United States
| | - Andrew M. Rappe
- Department of Chemistry, University of Pennsylvania, Philadelphia, Pennsylvania 19104-6323, United States
| |
Collapse
|
6
|
Hess F, Yildiz B. Precipitation of dopants on acceptor-doped LaMnO 3±δ revealed by defect chemistry from first principles. J Chem Phys 2021; 154:064702. [PMID: 33588549 DOI: 10.1063/5.0035691] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023] Open
Abstract
Perovskite oxides degrade at elevated temperatures while precipitating dopant-rich particles on the surface. A knowledge-based improvement of surface stability requires a fundamental and quantitative understanding of the dopant precipitation mechanism on these materials. We propose that dopant precipitation is a consequence of the variation of dopant solubility between calcination and operating conditions in solid oxide fuel cells (SOFCs) and electrolyzer cells (SOECs). To study dopant precipitation, we use 20% (D = Ca, Sr, Ba)-doped LaMnO3+δ (LDM20) as a model system. We employ a defect model taking input from density functional theory calculations. The defect model considers the equilibration of LDM20 with a reservoir consisting of dopant oxide (DO), peroxide (DO2), and O2 in the gas phase. The equilibrated non-stoichiometry of the A-site and B-site as a function of temperature, T, and oxygen partial pressure, p(O2), reveals three regimes for LDM20: A-site deficient (oxidizing conditions), A-site rich (atmospheric conditions), and near-stoichiometric (reducing conditions). Assuming an initial A/B non-stoichiometry, we compute the dopant precipitation boundaries in a p-T phase diagram. Our model predicts precipitation both under reducing (DO) and under highly oxidizing conditions (DO2). We found precipitation under anodic, SOEC conditions to be promoted by large dopant size, while under cathodic, SOFC conditions precipitation is promoted by initial A-site excess. The main driving forces for precipitation are oxygen uptake by the condensed phase under oxidizing conditions and oxygen release assisted by B-site vacancies under reducing conditions. Possible strategies for mitigating dopant precipitation under in electrolytic and fuel cell conditions are discussed.
Collapse
Affiliation(s)
- Franziska Hess
- Department of Nuclear Science and Engineering, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, Massachusetts 02139, USA
| | - Bilge Yildiz
- Department of Nuclear Science and Engineering, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, Massachusetts 02139, USA
| |
Collapse
|
7
|
Raman AS, Patel R, Vojvodic A. Surface stability of perovskite oxides under OER operating conditions: a first principles approach. Faraday Discuss 2021; 229:75-88. [DOI: 10.1039/c9fd00146h] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
Understanding the surface stability of perovskite oxides under OER operating conditions is crucial for the atomistic design of electrocatalysts for electrochemical water-splitting.
Collapse
Affiliation(s)
- Abhinav S. Raman
- Department of Chemical and Biomolecular Engineering
- University of Pennsylvania
- Philadelphia
- USA
| | - Roshan Patel
- Department of Chemical and Biomolecular Engineering
- University of Pennsylvania
- Philadelphia
- USA
| | - Aleksandra Vojvodic
- Department of Chemical and Biomolecular Engineering
- University of Pennsylvania
- Philadelphia
- USA
| |
Collapse
|
8
|
Timmermann J, Kraushofer F, Resch N, Li P, Wang Y, Mao Z, Riva M, Lee Y, Staacke C, Schmid M, Scheurer C, Parkinson GS, Diebold U, Reuter K. IrO_{2} Surface Complexions Identified through Machine Learning and Surface Investigations. PHYSICAL REVIEW LETTERS 2020; 125:206101. [PMID: 33258623 DOI: 10.1103/physrevlett.125.206101] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/05/2020] [Accepted: 09/22/2020] [Indexed: 06/12/2023]
Abstract
A Gaussian approximation potential was trained using density-functional theory data to enable a global geometry optimization of low-index rutile IrO_{2} facets through simulated annealing. Ab initio thermodynamics identifies (101) and (111) (1×1) terminations competitive with (110) in reducing environments. Experiments on single crystals find that (101) facets dominate and exhibit the theoretically predicted (1×1) periodicity and x-ray photoelectron spectroscopy core-level shifts. The obtained structures are analogous to the complexions discussed in the context of ceramic battery materials.
Collapse
Affiliation(s)
- Jakob Timmermann
- Chair for Theoretical Chemistry and Catalysis Research Center, Technical University of Munich, Lichtenbergstrasse 4, D-85747 Garching, Germany
| | - Florian Kraushofer
- Institute of Applied Physics, Technical University of Vienna, Wiedner Hauptstrasse 8-10/134, A-1040 Vienna, Austria
| | - Nikolaus Resch
- Institute of Applied Physics, Technical University of Vienna, Wiedner Hauptstrasse 8-10/134, A-1040 Vienna, Austria
| | - Peigang Li
- Department of Physics and Engineering Physics, Tulane University, New Orleans, Louisiana 70118, USA
| | - Yu Wang
- Department of Physics, The Pennsylvania State University, University Park, Pennsylvania 16802, USA
| | - Zhiqiang Mao
- Department of Physics and Engineering Physics, Tulane University, New Orleans, Louisiana 70118, USA
- Department of Physics, The Pennsylvania State University, University Park, Pennsylvania 16802, USA
| | - Michele Riva
- Institute of Applied Physics, Technical University of Vienna, Wiedner Hauptstrasse 8-10/134, A-1040 Vienna, Austria
| | - Yonghyuk Lee
- Chair for Theoretical Chemistry and Catalysis Research Center, Technical University of Munich, Lichtenbergstrasse 4, D-85747 Garching, Germany
| | - Carsten Staacke
- Chair for Theoretical Chemistry and Catalysis Research Center, Technical University of Munich, Lichtenbergstrasse 4, D-85747 Garching, Germany
| | - Michael Schmid
- Institute of Applied Physics, Technical University of Vienna, Wiedner Hauptstrasse 8-10/134, A-1040 Vienna, Austria
| | - Christoph Scheurer
- Chair for Theoretical Chemistry and Catalysis Research Center, Technical University of Munich, Lichtenbergstrasse 4, D-85747 Garching, Germany
| | - Gareth S Parkinson
- Institute of Applied Physics, Technical University of Vienna, Wiedner Hauptstrasse 8-10/134, A-1040 Vienna, Austria
| | - Ulrike Diebold
- Institute of Applied Physics, Technical University of Vienna, Wiedner Hauptstrasse 8-10/134, A-1040 Vienna, Austria
| | - Karsten Reuter
- Chair for Theoretical Chemistry and Catalysis Research Center, Technical University of Munich, Lichtenbergstrasse 4, D-85747 Garching, Germany
- Fritz-Haber-Institut der Max-Planck-Gesellschaft, Faradayweg 4-6, D-14195 Berlin, Germany
| |
Collapse
|
9
|
Tuning proton-coupled electron transfer by crystal orientation for efficient water oxidization on double perovskite oxides. Nat Commun 2020; 11:4299. [PMID: 32855418 PMCID: PMC7453016 DOI: 10.1038/s41467-020-17657-9] [Citation(s) in RCA: 34] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2020] [Accepted: 07/13/2020] [Indexed: 01/16/2023] Open
Abstract
Developing highly efficient and cost-effective oxygen evolution reaction (OER) electrocatalysts is critical for many energy devices. While regulating the proton-coupled electron transfer (PCET) process via introducing additive into the system has been reported effective in promoting OER activity, controlling the PCET process by tuning the intrinsic material properties remains a challenging task. In this work, we take double perovskite oxide PrBa0.5Sr0.5Co1.5Fe0.5O5+δ (PBSCF) as a model system to demonstrate enhancing OER activity through the promotion of PCET by tuning the crystal orientation and correlated proton diffusion. OER kinetics on PBSCF thin films with (100), (110), and (111) orientation, deposited on single crystal LaAlO3 substrates, were investigated using electrochemical measurements, density functional theory (DFT) calculations, and synchrotron-based near ambient X-ray photoelectron spectroscopy. The results clearly show that the OER activity and the ease of deprotonation depend on orientation and follow the order of (100) > (110) > (111). Correlated with OER activity, proton diffusion is found to be the fastest in the (100) film, followed by (110) and (111) films. Our results point out a way of boosting PCET and OER activity, which can also be successfully applied to a wide range of crucial applications in green energy and environment.
Collapse
|
10
|
Govind Rajan A, Martirez JMP, Carter EA. Why Do We Use the Materials and Operating Conditions We Use for Heterogeneous (Photo)Electrochemical Water Splitting? ACS Catal 2020. [DOI: 10.1021/acscatal.0c01862] [Citation(s) in RCA: 50] [Impact Index Per Article: 12.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Affiliation(s)
- Ananth Govind Rajan
- Department of Mechanical and Aerospace Engineering, Princeton University, Princeton, New Jersey 08544-5263, United States
| | - John Mark P. Martirez
- Department of Chemical and Biomolecular Engineering, University of California, Los Angeles, Los Angeles, California 90095-1592, United States
| | - Emily A. Carter
- Department of Mechanical and Aerospace Engineering, Princeton University, Princeton, New Jersey 08544-5263, United States
- Department of Chemical and Biomolecular Engineering, University of California, Los Angeles, Los Angeles, California 90095-1592, United States
- Office of the Chancellor, University of California, Los Angeles, Box 951405, Los Angeles, California 90095-1405, United States
| |
Collapse
|
11
|
Wu Z, Chen H, Wan Z, Zhang S, Zeng Y, Guo H, Zhong Q, Li X, Han J, Rong W. Promotional Effect of S Doping on V2O5–WO3/TiO2 Catalysts for Low-Temperature NOx Reduction with NH3. Ind Eng Chem Res 2020. [DOI: 10.1021/acs.iecr.0c00327] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Zihua Wu
- School of Chemical Engineering, Nanjing University of Science and Technology, Nanjing 210094, P. R. China
| | - Hao Chen
- School of Chemical Engineering, Nanjing University of Science and Technology, Nanjing 210094, P. R. China
| | - Zhongdang Wan
- School of Chemical Engineering, Nanjing University of Science and Technology, Nanjing 210094, P. R. China
| | - Shule Zhang
- School of Chemical Engineering, Nanjing University of Science and Technology, Nanjing 210094, P. R. China
| | - Yiqing Zeng
- School of Chemical Engineering, Nanjing University of Science and Technology, Nanjing 210094, P. R. China
| | - Haiwei Guo
- School of Chemical Engineering, Nanjing University of Science and Technology, Nanjing 210094, P. R. China
| | - Qin Zhong
- School of Chemical Engineering, Nanjing University of Science and Technology, Nanjing 210094, P. R. China
| | - Xiaohai Li
- School of Chemical Engineering, Nanjing University of Science and Technology, Nanjing 210094, P. R. China
| | - Jiayou Han
- Shanghai Meishan Steel Corporation Ltd., Nanjing 210039, P. R. China
| | - Weilong Rong
- School of Chemical Engineering, Nanjing University of Science and Technology, Nanjing 210094, P. R. China
| |
Collapse
|
12
|
Govind Rajan A, Martirez JMP, Carter EA. Facet-Independent Oxygen Evolution Activity of Pure β-NiOOH: Different Chemistries Leading to Similar Overpotentials. J Am Chem Soc 2020; 142:3600-3612. [DOI: 10.1021/jacs.9b13708] [Citation(s) in RCA: 72] [Impact Index Per Article: 18.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Affiliation(s)
- Ananth Govind Rajan
- Department of Mechanical and Aerospace Engineering, Princeton University, Princeton, New Jersey 08544-5263, United States
| | - John Mark P. Martirez
- Department of Chemical and Biomolecular Engineering, University of California, Los Angeles, Los Angeles, California 90095-1592, United States
| | - Emily A. Carter
- Department of Mechanical and Aerospace Engineering, Princeton University, Princeton, New Jersey 08544-5263, United States
- Department of Chemical and Biomolecular Engineering, University of California, Los Angeles, Los Angeles, California 90095-1592, United States
- Office of the Chancellor, University of California, Los Angeles, Box 951405, Los Angeles, California 90095-1405, United States
| |
Collapse
|
13
|
Le Bahers T, Takanabe K. Combined theoretical and experimental characterizations of semiconductors for photoelectrocatalytic applications. JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY C-PHOTOCHEMISTRY REVIEWS 2019. [DOI: 10.1016/j.jphotochemrev.2019.01.001] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
|
14
|
Catalytic consequences of ultrafine Pt clusters supported on SrTiO3 for photocatalytic overall water splitting. J Catal 2019. [DOI: 10.1016/j.jcat.2019.06.045] [Citation(s) in RCA: 43] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
|
15
|
Polo-Garzon F, Bao Z, Zhang X, Huang W, Wu Z. Surface Reconstructions of Metal Oxides and the Consequences on Catalytic Chemistry. ACS Catal 2019. [DOI: 10.1021/acscatal.9b01097] [Citation(s) in RCA: 73] [Impact Index Per Article: 14.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Felipe Polo-Garzon
- Chemical Science Division and Center for Nanophase Materials Sciences, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, United States
| | - Zhenghong Bao
- Chemical Science Division and Center for Nanophase Materials Sciences, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, United States
| | - Xuanyu Zhang
- Hefei National Laboratory for Physical Sciences at the Microscale, Key Laboratory of Surface and Interface Chemistry and Energy Catalysis of Anhui Higher Education Institutes, CAS Key Laboratory of Materials for Energy Conversion and Department of Chemical Physics, University of Science and Technology of China, Hefei 230026, People’s Republic of China
- Chemical Science Division and Center for Nanophase Materials Sciences, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, United States
| | - Weixin Huang
- Hefei National Laboratory for Physical Sciences at the Microscale, Key Laboratory of Surface and Interface Chemistry and Energy Catalysis of Anhui Higher Education Institutes, CAS Key Laboratory of Materials for Energy Conversion and Department of Chemical Physics, University of Science and Technology of China, Hefei 230026, People’s Republic of China
| | - Zili Wu
- Chemical Science Division and Center for Nanophase Materials Sciences, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, United States
| |
Collapse
|
16
|
|
17
|
Domingo N, Pach E, Cordero-Edwards K, Pérez-Dieste V, Escudero C, Verdaguer A. Water adsorption, dissociation and oxidation on SrTiO3 and ferroelectric surfaces revealed by ambient pressure X-ray photoelectron spectroscopy. Phys Chem Chem Phys 2019; 21:4920-4930. [DOI: 10.1039/c8cp07632d] [Citation(s) in RCA: 31] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Unveiling surface adsorbates under atmospheric conditions and in surface water redox reactions on TiO2 terminated surfaces and ferroelectric oxides, as studied by AP-XPS.
Collapse
Affiliation(s)
- Neus Domingo
- Catalan Institute of Nanoscience and Nanotechnology (ICN2)
- CSIC and The Barcelona Institute of Science and Technology
- 08193 Barcelona
- Spain
| | - Elzbieta Pach
- Catalan Institute of Nanoscience and Nanotechnology (ICN2)
- CSIC and The Barcelona Institute of Science and Technology
- 08193 Barcelona
- Spain
| | - Kumara Cordero-Edwards
- Catalan Institute of Nanoscience and Nanotechnology (ICN2)
- CSIC and The Barcelona Institute of Science and Technology
- 08193 Barcelona
- Spain
| | | | | | - Albert Verdaguer
- Institut de Ciència de Materials de Barcelona ICMAB-CSIC
- E-08193 Bellaterra
- Spain
| |
Collapse
|
18
|
Polo-Garzon F, Fung V, Liu X, Hood ZD, Bickel EE, Bai L, Tian H, Foo GS, Chi M, Jiang DE, Wu Z. Understanding the Impact of Surface Reconstruction of Perovskite Catalysts on CH4 Activation and Combustion. ACS Catal 2018. [DOI: 10.1021/acscatal.8b02307] [Citation(s) in RCA: 37] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
| | - Victor Fung
- Department of Chemistry, University of California. Riverside, California 92521, United States
| | | | - Zachary D. Hood
- Electrochemical Materials Laboratory, Department of Materials Science and Engineering, Massachusetts Institute of Technology. Cambridge, Massachusetts 02139, United States
| | - Elizabeth E. Bickel
- Department of Chemical Engineering, Tennessee Technological University. Cookeville, Tennessee 38505, United States
| | - Lei Bai
- Department of Chemical and Biomedical Engineering, West Virginia University, Morgantown, West Virginia 26506, United States
| | - Hanjing Tian
- Department of Chemical and Biomedical Engineering, West Virginia University, Morgantown, West Virginia 26506, United States
| | | | | | - De-en Jiang
- Department of Chemistry, University of California. Riverside, California 92521, United States
| | | |
Collapse
|
19
|
Nishioka S, Hyodo J, Vequizo JJM, Yamashita S, Kumagai H, Kimoto K, Yamakata A, Yamazaki Y, Maeda K. Homogeneous Electron Doping into Nonstoichiometric Strontium Titanate Improves Its Photocatalytic Activity for Hydrogen and Oxygen Evolution. ACS Catal 2018. [DOI: 10.1021/acscatal.8b01379] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Shunta Nishioka
- Department of Chemistry, School of Science, Tokyo Institute of Technology, 2-12-1-NE-2 Ookayama, Meguro-ku, Tokyo 152-8550, Japan
- Japan Society for the Promotion of Science, Kojimachi Business Center Building, 5-3-1 Kojimachi, Chiyoda-ku, Tokyo 102-0083, Japan
| | - Junji Hyodo
- INAMORI Frontier Research Center, Kyushu University, Motooka 744, Nishi-ku, Fukuoka 819-0395, Japan
| | - Junie Jhon M. Vequizo
- Graduate School of Engineering, Toyota Technical Institute, 2-12-1 Hisakata, Tempaku, Nagoya, Aichi 468-8511, Japan
| | - Shunsuke Yamashita
- Electron Microscopy Group, Research Center for Advanced Measurement and Characterization, National Institute for Materials Science, 1-1 Namiki, Tsukuba, Ibaraki 305-0044, Japan
| | - Hiromu Kumagai
- Department of Chemistry, School of Science, Tokyo Institute of Technology, 2-12-1-NE-2 Ookayama, Meguro-ku, Tokyo 152-8550, Japan
| | - Koji Kimoto
- Electron Microscopy Group, Research Center for Advanced Measurement and Characterization, National Institute for Materials Science, 1-1 Namiki, Tsukuba, Ibaraki 305-0044, Japan
| | - Akira Yamakata
- Graduate School of Engineering, Toyota Technical Institute, 2-12-1 Hisakata, Tempaku, Nagoya, Aichi 468-8511, Japan
| | - Yoshihiro Yamazaki
- INAMORI Frontier Research Center, Kyushu University, Motooka 744, Nishi-ku, Fukuoka 819-0395, Japan
- Department of Materials Science and Engineering, Graduate School of Engineering, Kyushu University, Motooka 744, Nishi-ku, Fukuoka 819-0395, Japan
- Kyushu University Platform of Inter-/Transdisciplinary Energy Research (Q-PIT), Kyushu University, Motooka 744, Nishi-ku, Fukuoka 819-0395, Japan
| | - Kazuhiko Maeda
- Department of Chemistry, School of Science, Tokyo Institute of Technology, 2-12-1-NE-2 Ookayama, Meguro-ku, Tokyo 152-8550, Japan
| |
Collapse
|
20
|
Qiu T, Tu B, Saldana-Greco D, Rappe AM. Ab Initio Simulation Explains the Enhancement of Catalytic Oxygen Evolution on CaMnO3. ACS Catal 2018. [DOI: 10.1021/acscatal.7b03987] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Tian Qiu
- Department
of Chemistry, University of Pennsylvania, Philadelphia, Pennsylvania 19104-6323, United States
| | - Bingtian Tu
- State
Key Lab of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Wuhan, People’s Republic of China
| | - Diomedes Saldana-Greco
- Department
of Chemistry, University of Pennsylvania, Philadelphia, Pennsylvania 19104-6323, United States
| | - Andrew M. Rappe
- Department
of Chemistry, University of Pennsylvania, Philadelphia, Pennsylvania 19104-6323, United States
| |
Collapse
|
21
|
Zhang P, Tachikawa T, Fujitsuka M, Majima T. The Development of Functional Mesocrystals for Energy Harvesting, Storage, and Conversion. Chemistry 2017; 24:6295-6307. [DOI: 10.1002/chem.201704680] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2017] [Indexed: 01/24/2023]
Affiliation(s)
- Peng Zhang
- The Institute of Scientific and Industrial Research (SANKEN); Osaka University; Mihogaoka 8-1 Ibaraki, Osaka 567-0047 Japan
| | - Takashi Tachikawa
- Molecular Photoscience Research Center; Kobe University; 1-1 Rokkodai-cho Nada-ku Kobe 657-8501 Japan
- PRESTO, Science and Technology Agency (JST); 24-1-8 Honcho Kawaguchi Saitama 332-0012 Japan
| | - Mamoru Fujitsuka
- The Institute of Scientific and Industrial Research (SANKEN); Osaka University; Mihogaoka 8-1 Ibaraki, Osaka 567-0047 Japan
| | - Tetsuro Majima
- The Institute of Scientific and Industrial Research (SANKEN); Osaka University; Mihogaoka 8-1 Ibaraki, Osaka 567-0047 Japan
| |
Collapse
|
22
|
Wexler RB, Martirez JMP, Rappe AM. Active Role of Phosphorus in the Hydrogen Evolving Activity of Nickel Phosphide (0001) Surfaces. ACS Catal 2017. [DOI: 10.1021/acscatal.7b02761] [Citation(s) in RCA: 78] [Impact Index Per Article: 11.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Robert B. Wexler
- Department
of Chemistry, University of Pennsylvania, Philadelphia, Pennsylvania 19104-6323, United States
| | - John Mark P. Martirez
- Department
of Mechanical and Aerospace Engineering, Princeton University, Princeton, New Jersey 08544, United States
| | - Andrew M. Rappe
- Department
of Chemistry, University of Pennsylvania, Philadelphia, Pennsylvania 19104-6323, United States
| |
Collapse
|
23
|
Polo-Garzon F, Yang SZ, Fung V, Foo GS, Bickel EE, Chisholm MF, Jiang DE, Wu Z. Controlling Reaction Selectivity through the Surface Termination of Perovskite Catalysts. Angew Chem Int Ed Engl 2017. [PMID: 28636790 DOI: 10.1002/anie.201704656] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
Although perovskites have been widely used in catalysis, tuning of their surface termination to control reaction selectivity has not been well established. In this study, we employed multiple surface-sensitive techniques to characterize the surface termination (one aspect of surface reconstruction) of SrTiO3 (STO) after thermal pretreatment (Sr enrichment) and chemical etching (Ti enrichment). We show, by using the conversion of 2-propanol as a probe reaction, that the surface termination of STO can be controlled to greatly tune catalytic acid/base properties and consequently the reaction selectivity over a wide range, which is not possible with single-metal oxides, either SrO or TiO2 . Density functional theory (DFT) calculations explain well the selectivity tuning and reaction mechanism on STO with different surface termination. Similar catalytic tunability was also observed on BaZrO3 , thus highlighting the generality of the findings of this study.
Collapse
Affiliation(s)
- Felipe Polo-Garzon
- Chemical Sciences Division and Center for Nanophase Materials Sciences, Oak Ridge National Laboratory, Oak Ridge, TN, 37831, USA
| | - Shi-Ze Yang
- Materials Science and Technology Division, Oak Ridge National Laboratory, Oak Ridge, TN, 37831, USA
| | - Victor Fung
- Department of Chemistry, University of California, Riverside, CA, 92521, USA
| | - Guo Shiou Foo
- Chemical Sciences Division and Center for Nanophase Materials Sciences, Oak Ridge National Laboratory, Oak Ridge, TN, 37831, USA
| | - Elizabeth E Bickel
- Department of Chemical Engineering, Tennessee Technological University, Cookeville, TN, 38505, USA
| | - Matthew F Chisholm
- Materials Science and Technology Division, Oak Ridge National Laboratory, Oak Ridge, TN, 37831, USA
| | - De-En Jiang
- Department of Chemistry, University of California, Riverside, CA, 92521, USA
| | - Zili Wu
- Chemical Sciences Division and Center for Nanophase Materials Sciences, Oak Ridge National Laboratory, Oak Ridge, TN, 37831, USA
| |
Collapse
|
24
|
Polo‐Garzon F, Yang S, Fung V, Foo GS, Bickel EE, Chisholm MF, Jiang D, Wu Z. Controlling Reaction Selectivity through the Surface Termination of Perovskite Catalysts. Angew Chem Int Ed Engl 2017. [DOI: 10.1002/ange.201704656] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Felipe Polo‐Garzon
- Chemical Sciences Division and Center for Nanophase Materials Sciences Oak Ridge National Laboratory Oak Ridge TN 37831 USA
| | - Shi‐Ze Yang
- Materials Science and Technology Division Oak Ridge National Laboratory Oak Ridge TN 37831 USA
| | - Victor Fung
- Department of Chemistry University of California Riverside CA 92521 USA
| | - Guo Shiou Foo
- Chemical Sciences Division and Center for Nanophase Materials Sciences Oak Ridge National Laboratory Oak Ridge TN 37831 USA
| | - Elizabeth E. Bickel
- Department of Chemical Engineering Tennessee Technological University Cookeville TN 38505 USA
| | - Matthew F. Chisholm
- Materials Science and Technology Division Oak Ridge National Laboratory Oak Ridge TN 37831 USA
| | - De‐en Jiang
- Department of Chemistry University of California Riverside CA 92521 USA
| | - Zili Wu
- Chemical Sciences Division and Center for Nanophase Materials Sciences Oak Ridge National Laboratory Oak Ridge TN 37831 USA
| |
Collapse
|
25
|
Zhang P, Ochi T, Fujitsuka M, Kobori Y, Majima T, Tachikawa T. Topotactic Epitaxy of SrTiO3
Mesocrystal Superstructures with Anisotropic Construction for Efficient Overall Water Splitting. Angew Chem Int Ed Engl 2017. [DOI: 10.1002/ange.201702223] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Affiliation(s)
- Peng Zhang
- The Institute of Scientific and Industrial Research (SANKEN); Osaka University; Mihogaoka 8-1, Ibaraki Osaka 567-0047 Japan
| | - Tomoya Ochi
- Department of Chemistry; Graduate School of Science; Kobe University; 1-1 Rokkodai-cho, Nada-ku Kobe 657-8501 Japan
| | - Mamoru Fujitsuka
- The Institute of Scientific and Industrial Research (SANKEN); Osaka University; Mihogaoka 8-1, Ibaraki Osaka 567-0047 Japan
| | - Yasuhiro Kobori
- Department of Chemistry; Graduate School of Science; Kobe University; 1-1 Rokkodai-cho, Nada-ku Kobe 657-8501 Japan
- Molecular Photoscience Research Center; Kobe University; 1-1 Rokkodai-cho, Nada-ku Kobe 657-8501 Japan
| | - Tetsuro Majima
- The Institute of Scientific and Industrial Research (SANKEN); Osaka University; Mihogaoka 8-1, Ibaraki Osaka 567-0047 Japan
| | - Takashi Tachikawa
- Department of Chemistry; Graduate School of Science; Kobe University; 1-1 Rokkodai-cho, Nada-ku Kobe 657-8501 Japan
- Molecular Photoscience Research Center; Kobe University; 1-1 Rokkodai-cho, Nada-ku Kobe 657-8501 Japan
- PRESTO; Science and Technology Agency (JST); 24-1-8 Honcho Kawaguchi Saitama 332-0012 Japan
| |
Collapse
|
26
|
Zhang P, Ochi T, Fujitsuka M, Kobori Y, Majima T, Tachikawa T. Topotactic Epitaxy of SrTiO3
Mesocrystal Superstructures with Anisotropic Construction for Efficient Overall Water Splitting. Angew Chem Int Ed Engl 2017; 56:5299-5303. [DOI: 10.1002/anie.201702223] [Citation(s) in RCA: 76] [Impact Index Per Article: 10.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2017] [Indexed: 11/12/2022]
Affiliation(s)
- Peng Zhang
- The Institute of Scientific and Industrial Research (SANKEN); Osaka University; Mihogaoka 8-1, Ibaraki Osaka 567-0047 Japan
| | - Tomoya Ochi
- Department of Chemistry; Graduate School of Science; Kobe University; 1-1 Rokkodai-cho, Nada-ku Kobe 657-8501 Japan
| | - Mamoru Fujitsuka
- The Institute of Scientific and Industrial Research (SANKEN); Osaka University; Mihogaoka 8-1, Ibaraki Osaka 567-0047 Japan
| | - Yasuhiro Kobori
- Department of Chemistry; Graduate School of Science; Kobe University; 1-1 Rokkodai-cho, Nada-ku Kobe 657-8501 Japan
- Molecular Photoscience Research Center; Kobe University; 1-1 Rokkodai-cho, Nada-ku Kobe 657-8501 Japan
| | - Tetsuro Majima
- The Institute of Scientific and Industrial Research (SANKEN); Osaka University; Mihogaoka 8-1, Ibaraki Osaka 567-0047 Japan
| | - Takashi Tachikawa
- Department of Chemistry; Graduate School of Science; Kobe University; 1-1 Rokkodai-cho, Nada-ku Kobe 657-8501 Japan
- Molecular Photoscience Research Center; Kobe University; 1-1 Rokkodai-cho, Nada-ku Kobe 657-8501 Japan
- PRESTO; Science and Technology Agency (JST); 24-1-8 Honcho Kawaguchi Saitama 332-0012 Japan
| |
Collapse
|
27
|
Miroshnichenko O, Posysaev S, Alatalo M. A DFT study of the effect of SO 4 groups on the properties of TiO 2 nanoparticles. Phys Chem Chem Phys 2016; 18:33068-33076. [PMID: 27886298 DOI: 10.1039/c6cp05681d] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
We present a study of the optical, electronic, and structural properties of TiO2 anatase-structured nanoparticles upon adsorption of SO4 groups, which are always present on the surface of the particles during the sulfate manufacturing method. Structural and electronic properties were studied using the density functional theory method (DFT), and optical properties were obtained by time-dependent DFT. It was found that SO4 groups alter both the geometric and electronic structure of TiO2 nanoparticles and change the photoabsorption characteristics. In particular, we find that η2-O2 type O-O moieties are formed due to the adsorption of 3 and 4SO4 groups.
Collapse
Affiliation(s)
- Olga Miroshnichenko
- University of Oulu, Theoretical Physics Research Unit, PL 3000, FI-90014 Oulu, Finland. and Peter the Great St. Petersburg Polytechnic University, Department of Theoretical Mechanics, Polytechnicheskaya 29, 195251 St. Petersburg, Russian Federation
| | - Sergei Posysaev
- University of Oulu, Theoretical Physics Research Unit, PL 3000, FI-90014 Oulu, Finland. and Peter the Great St. Petersburg Polytechnic University, Department of Theoretical Mechanics, Polytechnicheskaya 29, 195251 St. Petersburg, Russian Federation
| | - Matti Alatalo
- University of Oulu, Theoretical Physics Research Unit, PL 3000, FI-90014 Oulu, Finland.
| |
Collapse
|
28
|
Damodaran AR, Agar JC, Pandya S, Chen Z, Dedon L, Xu R, Apgar B, Saremi S, Martin LW. New modalities of strain-control of ferroelectric thin films. JOURNAL OF PHYSICS. CONDENSED MATTER : AN INSTITUTE OF PHYSICS JOURNAL 2016; 28:263001. [PMID: 27187744 DOI: 10.1088/0953-8984/28/26/263001] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
Ferroelectrics, with their spontaneous switchable electric polarization and strong coupling between their electrical, mechanical, thermal, and optical responses, provide functionalities crucial for a diverse range of applications. Over the past decade, there has been significant progress in epitaxial strain engineering of oxide ferroelectric thin films to control and enhance the nature of ferroelectric order, alter ferroelectric susceptibilities, and to create new modes of response which can be harnessed for various applications. This review aims to cover some of the most important discoveries in strain engineering over the past decade and highlight some of the new and emerging approaches for strain control of ferroelectrics. We discuss how these new approaches to strain engineering provide promising routes to control and decouple ferroelectric susceptibilities and create new modes of response not possible in the confines of conventional strain engineering. To conclude, we will provide an overview and prospectus of these new and interesting modalities of strain engineering helping to accelerate their widespread development and implementation in future functional devices.
Collapse
Affiliation(s)
- Anoop R Damodaran
- Department of Materials Science and Engineering, University of California, Berkeley, Berkeley, California, USA
| | | | | | | | | | | | | | | | | |
Collapse
|
29
|
Hong S, Nakhmanson SM, Fong DD. Screening mechanisms at polar oxide heterointerfaces. REPORTS ON PROGRESS IN PHYSICS. PHYSICAL SOCIETY (GREAT BRITAIN) 2016; 79:076501. [PMID: 27308889 DOI: 10.1088/0034-4885/79/7/076501] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
The interfaces of polar oxide heterostructures can display electronic properties unique from the oxides they border, as they require screening from either internal or external sources of charge. The screening mechanism depends on a variety of factors, including the band structure at the interface, the presence of point defects or adsorbates, whether or not the oxide is ferroelectric, and whether or not an external field is applied. In this review, we discuss both theoretical and experimental aspects of different screening mechanisms, giving special emphasis to ways in which the mechanism can be altered to provide novel or tunable functionalities. We begin with a theoretical introduction to the problem and highlight recent progress in understanding the impact of point defects on polar interfaces. Different case studies are then discussed, for both the high thickness regime, where interfaces must be screened and each interface can be considered separately, and the low thickness regime, where the degree and nature of screening can be manipulated and the interfaces are close enough to interact. We end with a brief outlook toward new developments in this rapidly progressing field.
Collapse
Affiliation(s)
- Seungbum Hong
- Materials Science Division, Argonne National Laboratory, Argonne, IL 60439, USA. Department of Materials Science & Engineering, KAIST, Daejeon 305-701, Korea
| | | | | |
Collapse
|
30
|
Qi Y, Yang J, Rappe AM. Theoretical Modeling of Tribochemical Reaction on Pt and Au Contacts: Mechanical Load and Catalysis. ACS APPLIED MATERIALS & INTERFACES 2016; 8:7529-7535. [PMID: 26910803 DOI: 10.1021/acsami.5b12350] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
Microelectromechanical system and nanoelectromechanical system (MEMS and NEMS) transistors are considered promising for size-reducing and power-maximizing electronic devices. However, the tribopolymer which forms due to the mechanical load to the contacts affects the conductivity dramatically. This is one of the challenging problems that prevents the widespread practical use of these otherwise promising devices. Here, we use density functional theory (DFT) to investigate the mechanisms of tribopolymer formation, including normal mechanical load and the catalytic effect, as well as the electrochemical effect of the metal contacts. We select benzene as the background gas, because it is one of the most common and severe hydrocarbon contaminants. Two adsorption cases are considered: one is benzene on the reactive metal surface, Pt(111), and the other is benzene on the noble metal, Au(111). We demonstrate that the formation of tribopolymer is induced by both the mechanical load and the catalytic effect of the contact. First, benzene molecules are adsorbed on the Pt surfaces. Then, due to the closure of the Pt contacts, stress is applied to the adsorbates, making the C-H bonds more fragile. As the stress increases further, H atoms are pressed close to the Pt substrate and begin to bond with Pt atoms. Thus, Pt acts as a catalyst, accelerating the dehydrogenation process. When there is voltage applied across the contacts, the catalytic effect is enhanced by electrochemistry. Finally, due to the loss of H atoms, C atoms become more reactive and link together or pile up to form tribopolymer. By understanding these mechanisms, we provide guidance on designing strategies for suppressing tribopolymer formation.
Collapse
Affiliation(s)
- Yubo Qi
- The Makineni Theoretical Laboratories, Department of Chemistry, University of Pennsylvania , Philadelphia, Pennsylvania 19104-6323, United States
| | - Jing Yang
- The Makineni Theoretical Laboratories, Department of Chemistry, University of Pennsylvania , Philadelphia, Pennsylvania 19104-6323, United States
| | - Andrew M Rappe
- The Makineni Theoretical Laboratories, Department of Chemistry, University of Pennsylvania , Philadelphia, Pennsylvania 19104-6323, United States
| |
Collapse
|