1
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Wu Z, Liang G, Kong Pang W, Zou J, Zhang W, Chen L, Ji X, Didier C, Peterson VK, Segre CU, Johannessen B, Guo Z. Structural Distortion in the Wadsley-Roth Niobium Molybdenum Oxide Phase Triggering Extraordinarily Stable Battery Performance. Angew Chem Int Ed Engl 2024; 63:e202317941. [PMID: 38197798 DOI: 10.1002/anie.202317941] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2023] [Revised: 01/03/2024] [Accepted: 01/10/2024] [Indexed: 01/11/2024]
Abstract
Wadsley-Roth niobium oxide phases have attracted extensive research interest recently as promising battery anodes. We have synthesized the niobium-molybdenum oxide shear phase (Nb, Mo)13 O33 with superior electrochemical Li-ion storage performance, including an ultralong cycling lifespan of at least 15000 cycles. During electrochemical cycling, a reversible single-phase solid-solution reaction with lithiated intermediate solid solutions is demonstrated using in situ X-ray diffraction, with the valence and short-range structural changes of the electrode probed by in situ Nb and Mo K-edge X-ray absorption spectroscopy. This work reveals that the superior stability of niobium molybdenum oxides is underpinned by changes in octahedral distortion during electrochemical reactions, and we report an in-depth understanding of how this stabilizes the oxide structure during cycling with implications for future long-life battery material design.
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Affiliation(s)
- Zhibin Wu
- State Key Laboratory for Powder Metallurgy, Central South University, Changsha, 410083, China
- Institute for Superconducting & Electronic Materials, School of Mechanical, Materials, Mechatronic and Biomedical Engineering, University of Wollongong, Wollongong, NSW 2522, Australia
| | - Gemeng Liang
- School of Chemical Engineering, The University of Adelaide, Adelaide, SA 5005, Australia
| | - Wei Kong Pang
- Institute for Superconducting & Electronic Materials, School of Mechanical, Materials, Mechatronic and Biomedical Engineering, University of Wollongong, Wollongong, NSW 2522, Australia
| | - Jinshuo Zou
- School of Chemical Engineering, The University of Adelaide, Adelaide, SA 5005, Australia
| | - Wenchao Zhang
- Institute for Superconducting & Electronic Materials, School of Mechanical, Materials, Mechatronic and Biomedical Engineering, University of Wollongong, Wollongong, NSW 2522, Australia
| | - Libao Chen
- State Key Laboratory for Powder Metallurgy, Central South University, Changsha, 410083, China
| | - Xiaobo Ji
- State Key Laboratory for Powder Metallurgy, Central South University, Changsha, 410083, China
- College of Chemistry and Chemical Engineering, Central South University, Changsha, 410083, China
| | - Christophe Didier
- Institute for Superconducting & Electronic Materials, School of Mechanical, Materials, Mechatronic and Biomedical Engineering, University of Wollongong, Wollongong, NSW 2522, Australia
- Australian Centre for Neutron Scattering, Australian Nuclear Science and Technology Organisation, Sydney, NSW 2234, Australia
| | - Vanessa K Peterson
- Institute for Superconducting & Electronic Materials, School of Mechanical, Materials, Mechatronic and Biomedical Engineering, University of Wollongong, Wollongong, NSW 2522, Australia
- Australian Centre for Neutron Scattering, Australian Nuclear Science and Technology Organisation, Sydney, NSW 2234, Australia
| | - Carlo U Segre
- Department of Physics and Center for Synchrotron Radiation Research and Instrumentation, Illinois Institute of Technology, Chicago, IL, 60616, USA
| | - Bernt Johannessen
- Australian Synchrotron, 800 Blackburn Rd, Clayton, VIC 3168, Australia
| | - Zaiping Guo
- School of Chemical Engineering, The University of Adelaide, Adelaide, SA 5005, Australia
- Institute for Superconducting & Electronic Materials, School of Mechanical, Materials, Mechatronic and Biomedical Engineering, University of Wollongong, Wollongong, NSW 2522, Australia
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2
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Suzanowicz AM, Turner B, Abeywickrama TM, Lin H, Alramahi D, Segre CU, Mandal BK. New Scalable Sulfur Cathode Containing Specifically Designed Polysulfide Adsorbing Materials. Materials (Basel) 2024; 17:856. [PMID: 38399107 PMCID: PMC10890257 DOI: 10.3390/ma17040856] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/24/2023] [Revised: 01/21/2024] [Accepted: 02/02/2024] [Indexed: 02/25/2024]
Abstract
Because of its considerable theoretical specific capacity and energy density, lithium-sulfur battery technology holds great potential to replace lithium-ion battery technology. However, a versatile, low-cost, and easily scalable bulk synthesis method is essential for translating bench-level development to large-scale production. This paper reports the design and synthesis of a new scalable sulfur cathode, S@CNT/PANI/PPyNT/TiO2 (BTX). The rationally chosen cathode components suppress the migration of polysulfide intermediates via chemical interactions, enhance redox kinetics, and provide electrical conductivity to sulfur, rendering outstanding long-term cycling performance and strong initial specific capacity in terms of electrochemical performance. This cathode's cell demonstrated an initial specific capacity of 740 mA h g-1 at 0.2 C (with a capacity decay rate of 0.08% per cycle after 450 cycles).
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Affiliation(s)
- Artur M. Suzanowicz
- Department of Chemistry, Illinois Institute of Technology, Chicago, IL 60616, USA (B.T.)
| | - Bianca Turner
- Department of Chemistry, Illinois Institute of Technology, Chicago, IL 60616, USA (B.T.)
| | | | - Hao Lin
- Department of Chemistry, Illinois Institute of Technology, Chicago, IL 60616, USA (B.T.)
| | - Dana Alramahi
- Department of Chemistry, Illinois Institute of Technology, Chicago, IL 60616, USA (B.T.)
| | - Carlo U. Segre
- Department of Physics & CSRRI, Illinois Institute of Technology, Chicago, IL 60616, USA;
| | - Braja K. Mandal
- Department of Chemistry, Illinois Institute of Technology, Chicago, IL 60616, USA (B.T.)
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3
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Mikheenkova A, Mukherjee S, Hirsbrunner M, Törnblom P, Tai CW, Segre CU, Ding Y, Zhang W, Asmara TC, Wei Y, Schmitt T, Rensmo H, Duda L, Hahlin M. The role of oxygen in automotive grade lithium-ion battery cathodes: an atomistic survey of ageing. J Mater Chem A Mater 2024; 12:2465-2478. [PMID: 38269086 PMCID: PMC10805348 DOI: 10.1039/d3ta05516g] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 09/11/2023] [Accepted: 12/06/2023] [Indexed: 01/26/2024]
Abstract
The rising demand for high-performance lithium-ion batteries, pivotal to electric transportation, hinges on key materials like the Ni-rich layered oxide LiNixCoyAlzO2 (NCA) used in cathodes. The present study investigates the redox mechanisms, with particular focus on the role of oxygen in commercial NCA electrodes, both fresh and aged under various conditions (aged cells have performed >900 cycles until a cathode capacity retention of ∼80%). Our findings reveal that oxygen participates in charge compensation during NCA delithiation, both through changes in transition metal (TM)-O bond hybridization and formation of partially reversible O2, the latter occurs already below 3.8 V vs. Li/Li+. Aged NCA material undergoes more significant changes in TM-O bond hybridization when cycling above 50% SoC, while reversible O2 formation is maintained. Nickel is found to be redox active throughout the entire delithiation and shows a more classical oxidation state change during cycling with smaller changes in the Ni-O hybridization. By contrast, Co redox activity relies on a stronger change in Co-O hybridization, with only smaller Co oxidation state changes. The Ni-O bond displays an almost twice as large change in its bond length on cycling as the Co-O bond. The Ni-O6 octahedra are similar in size to the Co-O6 octahedra in the delithiated state, but are larger in the lithiated state, a size difference that increases with battery ageing. These contrasting redox activities are reflected directly in structural changes. The NCA material exhibits the formation of nanopores upon ageing, and a possible connection to oxygen redox activity is discussed. The difference in interaction of Ni and Co with oxygen provides a key understanding of the mechanism and the electrochemical instability of Ni-rich layered transition metal oxide electrodes. Our research specifically highlights the significance of the role of oxygen in the electrochemical performance of electric-vehicle-grade NCA electrodes, offering important insights for the creation of next-generation long-lived lithium-ion batteries.
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Affiliation(s)
- Anastasiia Mikheenkova
- Ångström Laboratory, Department of Chemistry, Uppsala University SE 751 21 Uppsala Sweden
| | - Soham Mukherjee
- Ångström Laboratory, Department of Physics and Astronomy, Uppsala University SE 751 21 Uppsala Sweden
| | - Moritz Hirsbrunner
- Ångström Laboratory, Department of Physics and Astronomy, Uppsala University SE 751 21 Uppsala Sweden
| | - Pontus Törnblom
- Ångström Laboratory, Department of Physics and Astronomy, Uppsala University SE 751 21 Uppsala Sweden
| | - Cheuk-Wai Tai
- Department of Materials and Environmental Chemistry, Arrhenius Laboratory, Stockholm University Stockholm 10691 Sweden
| | - Carlo U Segre
- Department of Physics and CSRRI, Illinois Institute of Technology Chicago IL 60616 USA
| | - Yujia Ding
- Department of Physics and CSRRI, Illinois Institute of Technology Chicago IL 60616 USA
| | - Wenliang Zhang
- Laboratory for Condensed Matter, Paul Scherrer Institute Forschungsstrasse 111 Villigen PSI 5232 Switzerland
| | - Teguh Citra Asmara
- Laboratory for Condensed Matter, Paul Scherrer Institute Forschungsstrasse 111 Villigen PSI 5232 Switzerland
| | - Yuan Wei
- Laboratory for Condensed Matter, Paul Scherrer Institute Forschungsstrasse 111 Villigen PSI 5232 Switzerland
| | - Thorsten Schmitt
- Laboratory for Condensed Matter, Paul Scherrer Institute Forschungsstrasse 111 Villigen PSI 5232 Switzerland
| | - Håkan Rensmo
- Ångström Laboratory, Department of Physics and Astronomy, Uppsala University SE 751 21 Uppsala Sweden
| | - Laurent Duda
- Ångström Laboratory, Department of Physics and Astronomy, Uppsala University SE 751 21 Uppsala Sweden
| | - Maria Hahlin
- Ångström Laboratory, Department of Chemistry, Uppsala University SE 751 21 Uppsala Sweden
- Ångström Laboratory, Department of Physics and Astronomy, Uppsala University SE 751 21 Uppsala Sweden
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4
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He X, Ding Y, Huang Z, Liu M, Chi M, Wu Z, Segre CU, Song C, Wang X, Guo X. Engineering a self‐grown TiO2/Ti‐MOF heterojunction with selectively anchored high‐density Pt single‐atomic cocatalysts for efficient visible‐light‐driven hydrogen evolution. Angew Chem Int Ed Engl 2023. [DOI: 10.1002/ange.202217439] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/05/2023]
Affiliation(s)
- Xiaoyu He
- Dalian University of Technology State Key Lab of Finechemicals CHINA
| | - Yujia Ding
- Illinois Institute of Technology Physics and CSRRI UNITED STATES
| | - Zhennan Huang
- Oak Ridge National Laboratory Center for Nanophase Materials Sciences UNITED STATES
| | - Min Liu
- Dalian University of Technology State Key Lab of Finechemicals CHINA
| | - Miaofang Chi
- Oak Ridge National Laboratory Center for Nanophase Materials Sciences UNITED STATES
| | - Zili Wu
- Oak Ridge National Laboratory Center for Nanophase Materials Sciences UNITED STATES
| | - Carlo U. Segre
- Illinois Institute of Technology Physics and CSRRI UNITED STATES
| | - Chunshan Song
- The Chinese University of Hong Kong Chemistry HONG KONG
| | - Xiang Wang
- Dalian University of Technology State Key Lab of Finechemicals CHINA
| | - Xinwen Guo
- Dalian University of Technology State Key Leb of Fine Chemicals No 2 Linggong Road, Gaoxin District 116024 Dalian CHINA
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5
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He X, Ding Y, Huang Z, Liu M, Chi M, Wu Z, Segre CU, Song C, Wang X, Guo X. Engineering a self-grown TiO2/Ti-MOF heterojunction with selectively anchored high-density Pt single-atomic cocatalysts for efficient visible-light-driven hydrogen evolution. Angew Chem Int Ed Engl 2023:e202217439. [PMID: 36859700 DOI: 10.1002/anie.202217439] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2022] [Revised: 02/04/2023] [Accepted: 02/28/2023] [Indexed: 03/03/2023]
Abstract
A photocatalyst TiO2/Ti-BPDC-Pt is developed with a self-grown TiO2/Ti-metal-organic framework (MOF) heterojunction, i.e., TiO2/Ti-BPDC, and selectively anchored high-density Pt single-atomic cocatalysts on Ti-BPDC for photocatalytic hydrogen evolution. This intimate heterojunction, growing from the surface pyrolytic reconstruction of Ti-BPDC, works in a direct Z-scheme, efficiently separating electrons and holes. Pt is selectively anchored on Ti-BPDC by ligands and is found in the form of single atoms with loading up to 1.8 wt.%. The selective location of Pt is the electron-enriched domain of the heterojunction, which further enhances the utilization of the separated electrons. This tailored TiO2/Ti-BPDC-Pt shows a significantly enhanced activity of 12.4 mmol g-1 h-1 compared to other TiO2- or MOF-based catalysts. The structure-performance relationship further proves the balance of two simultaneously exposed domains of heterojunctions is critical to fulfilling this kind of catalyst.
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Affiliation(s)
- Xiaoyu He
- Dalian University of Technology, State Key Lab of Finechemicals, CHINA
| | - Yujia Ding
- Illinois Institute of Technology, Physics and CSRRI, UNITED STATES
| | - Zhennan Huang
- Oak Ridge National Laboratory, Center for Nanophase Materials Sciences, UNITED STATES
| | - Min Liu
- Dalian University of Technology, State Key Lab of Finechemicals, CHINA
| | - Miaofang Chi
- Oak Ridge National Laboratory, Center for Nanophase Materials Sciences, UNITED STATES
| | - Zili Wu
- Oak Ridge National Laboratory, Center for Nanophase Materials Sciences, UNITED STATES
| | - Carlo U Segre
- Illinois Institute of Technology, Physics and CSRRI, UNITED STATES
| | - Chunshan Song
- The Chinese University of Hong Kong, Chemistry, HONG KONG
| | - Xiang Wang
- Dalian University of Technology, State Key Lab of Finechemicals, CHINA
| | - Xinwen Guo
- Dalian University of Technology, State Key Leb of Fine Chemicals, No 2 Linggong Road, Gaoxin District, 116024, Dalian, CHINA
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6
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Lin G, Zhang Z, Ju Q, Wu T, Segre CU, Chen W, Peng H, Zhang H, Liu Q, Liu Z, Zhang Y, Kong S, Mao Y, Zhao W, Suenaga K, Huang F, Wang J. Bottom-up evolution of perovskite clusters into high-activity rhodium nanoparticles toward alkaline hydrogen evolution. Nat Commun 2023; 14:280. [PMID: 36650135 PMCID: PMC9845238 DOI: 10.1038/s41467-023-35783-y] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2022] [Accepted: 01/02/2023] [Indexed: 01/19/2023] Open
Abstract
Self-reconstruction has been considered an efficient means to prepare efficient electrocatalysts in various energy transformation process for bond activation and breaking. However, developing nano-sized electrocatalysts through complete in-situ reconstruction with improved activity remains challenging. Herein, we report a bottom-up evolution route of electrochemically reducing Cs3Rh2I9 halide-perovskite clusters on N-doped carbon to prepare ultrafine Rh nanoparticles (~2.2 nm) with large lattice spacings and grain boundaries. Various in-situ and ex-situ characterizations including electrochemical quartz crystal microbalance experiments elucidate the Cs and I extraction and Rh reduction during the electrochemical reduction. These Rh nanoparticles from Cs3Rh2I9 clusters show significantly enhanced mass and area activity toward hydrogen evolution reaction in both alkaline and chlor-alkali electrolyte, superior to liquid-reduced Rh nanoparticles as well as bulk Cs3Rh2I9-derived Rh via top-down electro-reduction transformation. Theoretical calculations demonstrate water activation could be boosted on Cs3Rh2I9 clusters-derived Rh nanoparticles enriched with multiply sites, thus smoothing alkaline hydrogen evolution.
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Affiliation(s)
- Gaoxin Lin
- grid.454856.e0000 0001 1957 6294State Key Lab of High Performance Ceramics and Superfine microstructure, Shanghai Institute of Ceramics, Chinese Academy of Sciences, 201899 Shanghai, China ,grid.410726.60000 0004 1797 8419Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, 100049 Beijing, China
| | - Zhuang Zhang
- grid.454856.e0000 0001 1957 6294State Key Lab of High Performance Ceramics and Superfine microstructure, Shanghai Institute of Ceramics, Chinese Academy of Sciences, 201899 Shanghai, China ,grid.410726.60000 0004 1797 8419Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, 100049 Beijing, China
| | - Qiangjian Ju
- grid.454856.e0000 0001 1957 6294State Key Lab of High Performance Ceramics and Superfine microstructure, Shanghai Institute of Ceramics, Chinese Academy of Sciences, 201899 Shanghai, China ,grid.410726.60000 0004 1797 8419Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, 100049 Beijing, China
| | - Tong Wu
- grid.454856.e0000 0001 1957 6294State Key Lab of High Performance Ceramics and Superfine microstructure, Shanghai Institute of Ceramics, Chinese Academy of Sciences, 201899 Shanghai, China ,grid.410726.60000 0004 1797 8419Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, 100049 Beijing, China
| | - Carlo U. Segre
- grid.62813.3e0000 0004 1936 7806Department of Physics & Center for Synchrotron Radiation Research and Instrumentation, Illinois Institute of Technology, Chicago, IL 60616 USA
| | - Wei Chen
- grid.62813.3e0000 0004 1936 7806Department of Mechanical, Materials and Aerospace Engineering, Illinois Institute of Technology, Chicago, IL 60616 USA
| | - Hongru Peng
- grid.440637.20000 0004 4657 8879School of Physical Science and Technology, ShanghaiTech University, 201210 Shanghai, China
| | - Hui Zhang
- grid.458459.10000 0004 1792 5798State Key Laboratory of Functional Materials for Informatics, Shanghai Institute of Microsystem and Information Technology, Chinese Academy of Sciences, 200050 Shanghai, China
| | - Qiunan Liu
- grid.136593.b0000 0004 0373 3971SANKEN, Osaka University, Ibaraki, 567-0047 Japan
| | - Zhi Liu
- grid.440637.20000 0004 4657 8879School of Physical Science and Technology, ShanghaiTech University, 201210 Shanghai, China ,grid.458459.10000 0004 1792 5798State Key Laboratory of Functional Materials for Informatics, Shanghai Institute of Microsystem and Information Technology, Chinese Academy of Sciences, 200050 Shanghai, China
| | - Yifan Zhang
- grid.454856.e0000 0001 1957 6294State Key Lab of High Performance Ceramics and Superfine microstructure, Shanghai Institute of Ceramics, Chinese Academy of Sciences, 201899 Shanghai, China ,grid.410726.60000 0004 1797 8419Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, 100049 Beijing, China
| | - Shuyi Kong
- grid.454856.e0000 0001 1957 6294State Key Lab of High Performance Ceramics and Superfine microstructure, Shanghai Institute of Ceramics, Chinese Academy of Sciences, 201899 Shanghai, China ,grid.410726.60000 0004 1797 8419Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, 100049 Beijing, China
| | - Yuanlv Mao
- grid.454856.e0000 0001 1957 6294State Key Lab of High Performance Ceramics and Superfine microstructure, Shanghai Institute of Ceramics, Chinese Academy of Sciences, 201899 Shanghai, China ,grid.410726.60000 0004 1797 8419Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, 100049 Beijing, China
| | - Wei Zhao
- grid.454856.e0000 0001 1957 6294State Key Lab of High Performance Ceramics and Superfine microstructure, Shanghai Institute of Ceramics, Chinese Academy of Sciences, 201899 Shanghai, China ,grid.410726.60000 0004 1797 8419Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, 100049 Beijing, China
| | - Kazu Suenaga
- grid.136593.b0000 0004 0373 3971SANKEN, Osaka University, Ibaraki, 567-0047 Japan
| | - Fuqiang Huang
- grid.454856.e0000 0001 1957 6294State Key Lab of High Performance Ceramics and Superfine microstructure, Shanghai Institute of Ceramics, Chinese Academy of Sciences, 201899 Shanghai, China ,grid.11135.370000 0001 2256 9319State Key Laboratory of Rare Earth Materials Chemistry and Applications, College of Chemistry and Molecular Engineering, Peking University, 100871 Beijing, China
| | - Jiacheng Wang
- grid.454856.e0000 0001 1957 6294State Key Lab of High Performance Ceramics and Superfine microstructure, Shanghai Institute of Ceramics, Chinese Academy of Sciences, 201899 Shanghai, China ,grid.410726.60000 0004 1797 8419Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, 100049 Beijing, China ,grid.440734.00000 0001 0707 0296Hebei Provincial Key Laboratory of Inorganic Nonmetallic Materials, College of Materials Science and Engineering, North China University of Science and Technology, 063210 Tangshan, China ,grid.440657.40000 0004 1762 5832School of Materials Science and Engineering, Taizhou University, 318000 Taizhou, Zhejiang China
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7
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Mukherjee S, Katea SN, Rodrigues EM, Segre CU, Hemmer E, Broqvist P, Rensmo H, Westin G. Entrapped Molecule-Like Europium-Oxide Clusters in Zinc Oxide with Nearly Unaffected Host Structure. Small 2023; 19:e2203331. [PMID: 36403214 DOI: 10.1002/smll.202203331] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/29/2022] [Revised: 10/14/2022] [Indexed: 06/16/2023]
Abstract
Nanocrystalline ZnO sponges doped with 5 mol% EuO1.5 are obtained by heating metal-salt complex based precursor pastes at 200-900 °C for 3 min. X-ray diffraction, transmission electron microscopy, and extended X-ray absorption fine structure (EXAFS) show that phase separation into ZnO:Eu and c-Eu2 O3 takes place upon heating at 700 °C or higher. The unit cell of the clean oxide made at 600 °C shows only ≈0.4% volume increase versus undoped ZnO, and EXAFS shows a ZnO local structure that is little affected by the Eu-doping and an average Eu3+ ion coordination number of ≈5.2. Comparisons of 23 density functional theory-generated structures having differently sized Eu-oxide clusters embedded in ZnO identify three structures with four or eight Eu atoms as the most energetically favorable. These clusters exhibit the smallest volume increase compared to undoped ZnO and Eu coordination numbers of 5.2-5.5, all in excellent agreement with experimental data. ZnO defect states are crucial for efficient Eu3+ excitation, while c-Eu2 O3 phase separation results in loss of the characteristic Eu3+ photoluminescence. The formation of molecule-like Eu-oxide clusters, entrapped in ZnO, proposed here, may help in understanding the nature of the unexpected high doping levels of lanthanide ions in ZnO that occur virtually without significant change in ZnO unit cell dimensions.
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Affiliation(s)
- Soham Mukherjee
- Department of Physics and Astronomy, Ångström Laboratory, Uppsala University, Uppsala, 75237, Sweden
| | - Sarmad Naim Katea
- Department of Chemistry-Ångström, Ångström Laboratory, Uppsala University, Uppsala, 75121, Sweden
| | - Emille M Rodrigues
- Department of Chemistry and Biomolecular Sciences, University of Ottawa, Ottawa, Ontario, K1N 6N5, Canada
| | - Carlo U Segre
- Center for Synchrotron Radiation Research and Instrumentation and Department of Physics, Illinois Institute of Technology, Chicago, IL, 60616, USA
| | - Eva Hemmer
- Department of Chemistry and Biomolecular Sciences, University of Ottawa, Ottawa, Ontario, K1N 6N5, Canada
| | - Peter Broqvist
- Department of Chemistry-Ångström, Ångström Laboratory, Uppsala University, Uppsala, 75121, Sweden
| | - Håkan Rensmo
- Department of Physics and Astronomy, Ångström Laboratory, Uppsala University, Uppsala, 75237, Sweden
| | - Gunnar Westin
- Department of Chemistry-Ångström, Ångström Laboratory, Uppsala University, Uppsala, 75121, Sweden
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8
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Dong Q, Zhang X, Qian J, He S, Mao Y, Brozena AH, Zhang Y, Pollard TP, Borodin OA, Wang Y, Chava BS, Das S, Zavalij P, Segre CU, Zhu D, Xu L, Liang Y, Yao Y, Briber RM, Li T, Hu L. A cellulose-derived supramolecule for fast ion transport. Sci Adv 2022; 8:eadd2031. [PMID: 36490337 PMCID: PMC9733924 DOI: 10.1126/sciadv.add2031] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 05/27/2022] [Accepted: 10/28/2022] [Indexed: 06/17/2023]
Abstract
Supramolecular frameworks have been widely synthesized for ion transport applications. However, conventional approaches of constructing ion transport pathways in supramolecular frameworks typically require complex processes and display poor scalability, high cost, and limited sustainability. Here, we report the scalable and cost-effective synthesis of an ion-conducting (e.g., Na+) cellulose-derived supramolecule (Na-CS) that features a three-dimensional, hierarchical, and crystalline structure composed of massively aligned, one-dimensional, and ångström-scale open channels. Using wood-based Na-CS as a model material, we achieve high ionic conductivities (e.g., 0.23 S/cm in 20 wt% NaOH at 25 °C) even with a highly dense microstructure, in stark contrast to conventional membranes that typically rely on large pores (e.g., submicrometers to a few micrometers) to obtain comparable ionic conductivities. This synthesis approach can be universally applied to a variety of cellulose materials beyond wood, including cotton textiles, fibers, paper, and ink, which suggests excellent potential for a number of applications such as ion-conductive membranes, ionic cables, and ionotronic devices.
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Affiliation(s)
- Qi Dong
- Department of Materials Science and Engineering, University of Maryland College Park, College Park, MD 20742, USA
| | - Xin Zhang
- Department of Materials Science and Engineering, University of Maryland College Park, College Park, MD 20742, USA
| | - Ji Qian
- Department of Materials Science and Engineering, University of Maryland College Park, College Park, MD 20742, USA
| | - Shuaiming He
- Department of Materials Science and Engineering, University of Maryland College Park, College Park, MD 20742, USA
| | - Yimin Mao
- Department of Materials Science and Engineering, University of Maryland College Park, College Park, MD 20742, USA
- National Institute of Standards and Technology, Gaithersburg, MD 20783, USA
| | - Alexandra H. Brozena
- Department of Materials Science and Engineering, University of Maryland College Park, College Park, MD 20742, USA
| | - Ye Zhang
- Department of Electrical and Computer Engineering, University of Houston, Houston, TX 77204, USA
- Texas Center for Superconductivity at the University of Houston (TcSUH), Houston, TX 77204, USA
| | - Travis P. Pollard
- Battery Science Branch, Energy Science Division, Sensor and Electron Devices Directorate, DEVCOM Army Research Laboratory, Adelphi, MD 20783, USA
| | - Oleg A. Borodin
- Battery Science Branch, Energy Science Division, Sensor and Electron Devices Directorate, DEVCOM Army Research Laboratory, Adelphi, MD 20783, USA
| | - Yanbin Wang
- School of Mechanical Engineering, Purdue University, West Lafayette, IN 47907, USA
- Department of Mechanical Engineering, University of Maryland College Park, College Park, MD 20742, USA
| | - Bhargav Sai Chava
- Department of Mechanical Engineering, University of Maryland College Park, College Park, MD 20742, USA
| | - Siddhartha Das
- Department of Mechanical Engineering, University of Maryland College Park, College Park, MD 20742, USA
| | - Peter Zavalij
- Department of Chemistry and Biochemistry, University of Maryland College Park, College Park, MD 20742, USA
| | - Carlo U. Segre
- Center for Synchrotron Radiation Research and Instrumentation (CSRRI), Illinois Institute of Technology, Physics Department, Chicago, IL 60616, USA
| | - Dongyang Zhu
- Department of Materials Science and Engineering, University of Maryland College Park, College Park, MD 20742, USA
| | - Lin Xu
- Department of Materials Science and Engineering, University of Maryland College Park, College Park, MD 20742, USA
| | - Yanliang Liang
- Department of Electrical and Computer Engineering, University of Houston, Houston, TX 77204, USA
- Texas Center for Superconductivity at the University of Houston (TcSUH), Houston, TX 77204, USA
| | - Yan Yao
- Department of Electrical and Computer Engineering, University of Houston, Houston, TX 77204, USA
- Texas Center for Superconductivity at the University of Houston (TcSUH), Houston, TX 77204, USA
| | - Robert M. Briber
- Department of Materials Science and Engineering, University of Maryland College Park, College Park, MD 20742, USA
| | - Tian Li
- Department of Materials Science and Engineering, University of Maryland College Park, College Park, MD 20742, USA
- School of Mechanical Engineering, Purdue University, West Lafayette, IN 47907, USA
| | - Liangbing Hu
- Department of Materials Science and Engineering, University of Maryland College Park, College Park, MD 20742, USA
- Center for Materials Innovation, University of Maryland College Park, College Park, MD 20742, USA
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9
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Gupta SK, Abdou H, Segre CU, Mao Y. Excitation-Dependent Photoluminescence of BaZrO 3:Eu 3+ Crystals. Nanomaterials (Basel) 2022; 12:3028. [PMID: 36080065 PMCID: PMC9457899 DOI: 10.3390/nano12173028] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/24/2022] [Revised: 08/25/2022] [Accepted: 08/25/2022] [Indexed: 06/15/2023]
Abstract
The elucidation of local structure, excitation-dependent spectroscopy, and defect engineering in lanthanide ion-doped phosphors was a focal point of research. In this work, we have studied Eu3+-doped BaZrO3 (BZOE) submicron crystals that were synthesized by a molten salt method. The BZOE crystals show orange-red emission tunability under the host and dopant excitations at 279 nm and 395 nm, respectively, and the difference is determined in terms of the asymmetry ratio, Stark splitting, and intensity of the uncommon 5D0 → 7F0 transition. These distinct spectral features remain unaltered under different excitations for the BZOE crystals with Eu3+ concentrations of 0-10.0%. The 2.0% Eu3+-doped BZOE crystals display the best optical performance in terms of excitation/emission intensity, lifetime, and quantum yield. The X-ray absorption near the edge structure spectral data suggest europium, barium, and zirconium ions to be stabilized in +3, +2, and +4 oxidation states, respectively. The extended X-ray absorption fine structure spectral analysis confirms that, below 2.0% doping, the Eu3+ ions occupy the six-coordinated Zr4+ sites. This work gives complete information about the BZOE phosphor in terms of the dopant oxidation state, the local structure, the excitation-dependent photoluminescence (PL), the concentration-dependent PL, and the origin of PL. Such a complete photophysical analysis opens up a new pathway in perovskite research in the area of phosphors and scintillators with tunable properties.
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Affiliation(s)
- Santosh K. Gupta
- Radiochemistry Division, Bhabha Atomic Research Centre, Trombay, Mumbai 400085, India
- Homi Bhabha National Institute, Anushakti Nagar, Mumbai 400094, India
| | - Hisham Abdou
- Department of Chemistry, University of Texas Rio Grande Valley, 1201 West University Drive, Edinburg, TX 78539, USA
| | - Carlo U. Segre
- Center for Synchrotron Radiation Research and Instrumentation and Department of Physics, Illinois Institute of Technology, Chicago, IL 60616, USA
| | - Yuanbing Mao
- Department of Chemistry, Illinois Institute of Technology, 3105 South Dearborn Street, Chicago, IL 60616, USA
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10
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Ross RD, Sheng H, Ding Y, Janes AN, Feng D, Schmidt JR, Segre CU, Jin S. Operando Elucidation of Electrocatalytic and Redox Mechanisms on a 2D Metal Organic Framework Catalyst for Efficient Electrosynthesis of Hydrogen Peroxide in Neutral Media. J Am Chem Soc 2022; 144:15845-15854. [PMID: 35985015 DOI: 10.1021/jacs.2c06810] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Abstract
The practical electrosynthesis of hydrogen peroxide (H2O2) is hindered by the lack of inexpensive and efficient catalysts for the two-electron oxygen reduction reaction (2e- ORR) in neutral electrolytes. Here, we show that Ni3HAB2 (HAB = hexaaminobenzene), a two-dimensional metal organic framework (MOF), is a selective and active 2e- ORR catalyst in buffered neutral electrolytes with a linker-based redox feature that dynamically affects the ORR behaviors. Rotating ring-disk electrode measurements reveal that Ni3HAB2 has high selectivity for 2e- ORR (>80% at 0.6 V vs RHE) but lower Faradaic efficiency due to this linker redox process. Operando X-ray absorption spectroscopy measurements reveal that under argon gas the charging of the organic linkers causes a dynamic Ni oxidation state, but in O2-saturated conditions, the electronic and physical structures of Ni3HAB2 change little and oxygen-containing species strongly adsorb at potentials more cathodic than the reduction potential of the organic linker (Eredox ∼ 0.3 V vs RHE). We hypothesize that a primary 2e- ORR mechanism occurs directly on the organic linkers (rather than the Ni) when E > Eredox, but when E < Eredox, H2O2 production can also occur through Ni-mediated linker discharge. By operating the bulk electrosynthesis at a low overpotential (0.4 V vs RHE), up to 662 ppm of H2O2 can be produced in a buffered neutral solution in an H-cell due to minimized strong adsorption of oxygenates. This work demonstrates the potential of conductive MOF catalysts for 2e- ORR and the importance of understanding catalytic active sites under electrochemical operation.
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Affiliation(s)
- R Dominic Ross
- Department of Chemistry, University of Wisconsin-Madison, 1101 University Avenue, Madison, Wisconsin 53706, United States
| | - Hongyuan Sheng
- Department of Chemistry, University of Wisconsin-Madison, 1101 University Avenue, Madison, Wisconsin 53706, United States
| | - Yujia Ding
- Department of Physics and CSRRI, Illinois Institute of Technology, Chicago, Illinois 60616, United States
| | - Aurora N Janes
- Department of Chemistry, University of Wisconsin-Madison, 1101 University Avenue, Madison, Wisconsin 53706, United States
| | - Dawei Feng
- Department of Chemistry, University of Wisconsin-Madison, 1101 University Avenue, Madison, Wisconsin 53706, United States.,Department of Materials Science and Engineering, University of Wisconsin-Madison, Madison, Wisconsin 53706, United States
| | - J R Schmidt
- Department of Chemistry, University of Wisconsin-Madison, 1101 University Avenue, Madison, Wisconsin 53706, United States
| | - Carlo U Segre
- Department of Physics and CSRRI, Illinois Institute of Technology, Chicago, Illinois 60616, United States
| | - Song Jin
- Department of Chemistry, University of Wisconsin-Madison, 1101 University Avenue, Madison, Wisconsin 53706, United States
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11
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Wang X, Jahanbazi F, Wei J, Segre CU, Chen W, Mao Y. Charge Transfer-Triggered Bi 3+ Near-Infrared Emission in Y 2Ti 2O 7 for Dual-Mode Temperature Sensing. ACS Appl Mater Interfaces 2022; 14:36834-36844. [PMID: 35921172 DOI: 10.1021/acsami.2c09361] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
Trivalent bismuth is a popular main group ion showing versatile luminescent behaviors in a broad spectral range from ultraviolet to visible, but barely in the near-infrared (NIR) region. In this study, we have observed unexpected NIR emission at ∼744 nm in a Bi3+-doped pyrochlore, Y2Ti2O7 (YTOB). Our first-principles electronic structure calculation and analysis of the Bi local structure via extended X-ray absorption fine structure indicate that only Bi3+ species appears in YTOB and it has a similar local environment to that of Y3+. The NIR emission is assigned to a Ti4+ → Bi3+ metal-to-metal charge transfer process. Moreover, we have demonstrated dual-mode luminescence thermometry based on the luminescence intensity ratio (LIR) and lifetime (τ) in 0.5% Bi3+ and 0.5% Pr3+ co-doped Y2Ti2O7 (YTOB0.5P0.5). It exhibits high thermometric sensitivity simultaneously in the cryogenic temperature range from 78 to 298 K based on τ of the NIR emission of Bi3+ at 748 nm and in the temperature range of 278-378 K based on the LIR of Bi3+ to Pr3+ emissions (I748/I615). As a novel LIR-τ dual-mode thermometric material over a wide temperature range, the maximum relative sensitivities of the YTOB0.5P0.5 reach 3.53% K-1 at 298 K from the τ mode and 3.52% K-1 at 318 K based on the LIR mode. The dual-mode luminescence thermometry with high responsivity from our Bi3+-based pyrochlore Y2Ti2O7 phosphor opens a new avenue for more luminescent materials toward multi-mode thermometry applied in complex temperature-sensing conditions.
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Affiliation(s)
- Xianli Wang
- Department of Chemistry, Illinois Institute of Technology, Chicago, Illinois 60616, United States
| | - Forough Jahanbazi
- Department of Chemistry, Illinois Institute of Technology, Chicago, Illinois 60616, United States
| | - Jialiang Wei
- Department of Mechanical, Materials, and Aerospace Engineering, Illinois Institute of Technology, Chicago, Illinois 60616, United States
| | - Carlo U Segre
- Center for Synchrotron Radiation Research and Instrumentation and Department of Physics, Illinois Institute of Technology, Chicago, Illinois 60616, United States
| | - Wei Chen
- Department of Mechanical, Materials, and Aerospace Engineering, Illinois Institute of Technology, Chicago, Illinois 60616, United States
| | - Yuanbing Mao
- Department of Chemistry, Illinois Institute of Technology, Chicago, Illinois 60616, United States
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12
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Esmaeilirad M, Baskin A, Kondori A, Sanz-Matias A, Qian J, Song B, Tamadoni Saray M, Kucuk K, Belmonte AR, Delgado PNM, Park J, Azari R, Segre CU, Shahbazian-Yassar R, Prendergast D, Asadi M. Gold-like activity copper-like selectivity of heteroatomic transition metal carbides for electrocatalytic carbon dioxide reduction reaction. Nat Commun 2021; 12:5067. [PMID: 34417447 PMCID: PMC8379264 DOI: 10.1038/s41467-021-25295-y] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2021] [Accepted: 07/06/2021] [Indexed: 11/09/2022] Open
Abstract
An overarching challenge of the electrochemical carbon dioxide reduction reaction (eCO2RR) is finding an earth-abundant, highly active catalyst that selectively produces hydrocarbons at relatively low overpotentials. Here, we report the eCO2RR performance of two-dimensional transition metal carbide class of materials. Our results indicate a maximum methane (CH4) current density of −421.63 mA/cm2 and a CH4 faradic efficiency of 82.7% ± 2% for di-tungsten carbide (W2C) nanoflakes in a hybrid electrolyte of 3 M potassium hydroxide and 2 M choline-chloride. Powered by a triple junction photovoltaic cell, we demonstrate a flow electrolyzer that uses humidified CO2 to produce CH4 in a 700-h process under one sun illumination with a CO2RR energy efficiency of about 62.3% and a solar-to-fuel efficiency of 20.7%. Density functional theory calculations reveal that dissociation of water, chemisorption of CO2 and cleavage of the C-O bond—the most energy consuming elementary steps in other catalysts such as copper—become nearly spontaneous at the W2C surface. This results in instantaneous formation of adsorbed CO—an important reaction intermediate—and an unlimited source of protons near the tungsten surface sites that are the main reasons for the observed superior activity, selectivity, and small potential. It is of high interests to develop new catalysts for selective CO2 electroreduction. Here the authors investigate two-dimensional transition metal carbides for CO2 to methane conversion with superior activity, selectivity and low overpotentials.
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Affiliation(s)
- Mohammadreza Esmaeilirad
- Department of Chemical and Biological Engineering, Illinois Institute of Technology, Chicago, IL, USA
| | - Artem Baskin
- Molecular Foundry, Lawrence Berkeley National Laboratory, Berkeley, CA, USA
| | - Alireza Kondori
- Department of Chemical and Biological Engineering, Illinois Institute of Technology, Chicago, IL, USA
| | - Ana Sanz-Matias
- Molecular Foundry, Lawrence Berkeley National Laboratory, Berkeley, CA, USA
| | - Jin Qian
- Molecular Foundry, Lawrence Berkeley National Laboratory, Berkeley, CA, USA
| | - Boao Song
- Department of Mechanical and Industrial Engineering, University of Illinois at Chicago, Chicago, IL, USA
| | - Mahmoud Tamadoni Saray
- Department of Mechanical and Industrial Engineering, University of Illinois at Chicago, Chicago, IL, USA
| | - Kamil Kucuk
- Department of Physics & CSRRI, Illinois Institute of Technology, Chicago, IL, USA
| | - Andres Ruiz Belmonte
- Department of Chemical and Biological Engineering, Illinois Institute of Technology, Chicago, IL, USA
| | | | - Junwon Park
- Department of Chemical and Biological Engineering, Illinois Institute of Technology, Chicago, IL, USA
| | - Rahman Azari
- Department of Architecture, Pennsylvania State University, University Park, PA, USA
| | - Carlo U Segre
- Department of Physics & CSRRI, Illinois Institute of Technology, Chicago, IL, USA
| | - Reza Shahbazian-Yassar
- Department of Mechanical and Industrial Engineering, University of Illinois at Chicago, Chicago, IL, USA
| | - David Prendergast
- Molecular Foundry, Lawrence Berkeley National Laboratory, Berkeley, CA, USA.
| | - Mohammad Asadi
- Department of Chemical and Biological Engineering, Illinois Institute of Technology, Chicago, IL, USA.
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13
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Wang ZC, Thanabalasingam K, Scheifers JP, Streeter A, McCandless GT, Gaudet J, Brown CM, Segre CU, Chan JY, Tafti F. Antiferromagnetic Order and Spin-Canting Transition in the Corrugated Square Net Compound Cu 3(TeO 4)(SO 4)·H 2O. Inorg Chem 2021; 60:10565-10571. [PMID: 34176270 PMCID: PMC10629843 DOI: 10.1021/acs.inorgchem.1c01220] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Abstract
Strongly correlated electrons in layered perovskite structures have been the birthplace of high-temperature superconductivity, spin liquids, and quantum criticality. Specifically, the cuprate materials with layered structures made of corner-sharing square-planar CuO4 units have been intensely studied due to their Mott insulating ground state, which leads to high-temperature superconductivity upon doping. Identifying new compounds with similar lattice and electronic structures has become a challenge in solid-state chemistry. Here, we report the hydrothermal crystal growth of a new copper tellurite sulfate, Cu3(TeO4)(SO4)·H2O, a promising alternative to layered perovskites. The orthorhombic phase (space group Pnma) is made of corrugated layers of corner-sharing CuO4 square-planar units that are edge-shared with TeO4 units. The layers are linked by slabs of corner-sharing CuO4 and SO4. Using both the bond valence sum analysis and magnetization data, we find purely Cu2+ ions within the layers but a mixed valence of Cu2+/Cu+ between the layers. Cu3(TeO4)(SO4)·H2O undergoes an antiferromagnetic transition at TN = 67 K marked by a peak in the magnetic susceptibility. Upon further cooling, a spin-canting transition occurs at T* = 12 K, evidenced by a kink in the heat capacity. The spin-canting transition is explained on the basis of a J1-J2 model of magnetic interactions, which is consistent with the slightly different in-plane superexchange paths. We present Cu3(TeO4)(SO4)·H2O as a promising platform for the future doping and strain experiments that could tune the Mott insulating ground state into superconducting or spin liquid states.
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Affiliation(s)
- Zhi-Cheng Wang
- Department of Physics, Boston College, Chestnut Hill, Massachusetts 02467, United States
| | - Kulatheepan Thanabalasingam
- Department of Chemistry and Biochemistry, University of Texas at Dallas, Richardson, Texas 75080, United States
| | - Jan P Scheifers
- Department of Chemistry and Biochemistry, University of Texas at Dallas, Richardson, Texas 75080, United States
| | - Alenna Streeter
- Department of Physics, Boston College, Chestnut Hill, Massachusetts 02467, United States
| | - Gregory T McCandless
- Department of Chemistry and Biochemistry, University of Texas at Dallas, Richardson, Texas 75080, United States
| | - Jonathan Gaudet
- Department of Materials Science and Engineering, Maryland University, College Park, Maryland 20942-2115, United States
- NIST Center for Neutron Research, National Institute of Standards and Technology, Gaithersburg, Maryland 20899-6102, United States
| | - Craig M Brown
- NIST Center for Neutron Research, National Institute of Standards and Technology, Gaithersburg, Maryland 20899-6102, United States
| | - Carlo U Segre
- Department of Physics & CSRRI, Illinois Institute of Technology, Chicago, Illinois 60616, United States
| | - Julia Y Chan
- Department of Chemistry and Biochemistry, University of Texas at Dallas, Richardson, Texas 75080, United States
| | - Fazel Tafti
- Department of Physics, Boston College, Chestnut Hill, Massachusetts 02467, United States
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14
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Feng HL, Deng Z, Segre CU, Croft M, Lapidus SH, Frank CE, Shi Y, Jin C, Walker D, Greenblatt M. High-Pressure Synthesis of Double Perovskite Ba 2NiIrO 6: In Search of a Ferromagnetic Insulator. Inorg Chem 2021; 60:1241-1247. [PMID: 33373217 DOI: 10.1021/acs.inorgchem.0c03402] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Double perovskite oxides with d8-d3 electronic configurations are expected to be ferromagnetic from the Goodenough-Kanamori rules, such as ferromagnetic La2NiMnO6. In search of new ferromagnetic insulators, double perovskite Ba2NiIrO6 was successfully synthesized by high-pressure and high-temperature methods (8 GPa and 1573 K). Ba2NiIrO6 crystallizes in a cubic double perovskite structure (space group: Fm3̅m), with an ordered arrangement of NiO6 and IrO6 octahedra. X-ray absorption near-edge spectroscopy confirms the nominal Ni(II) and Ir(VI) valence states. Ba2NiIrO6 displays an antiferromagnetic order at 51 K. The positive Weiss temperature, however, indicates that ferromagnetic interactions are dominant. Isothermal magnetization curves at low temperatures support a field-induced spin-flop transition.
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Affiliation(s)
- Hai L Feng
- Department of Chemistry and Chemical Biology, Rutgers, The State University of New Jersey, 123 Bevier Road, Piscataway, New Jersey 08854, United States.,Beijing National Laboratory for Condensed Matter Physics and Institute of Physics, Chinese Academy of Sciences (CAS), Beijing 100190, China
| | - Zheng Deng
- Beijing National Laboratory for Condensed Matter Physics and Institute of Physics, Chinese Academy of Sciences (CAS), Beijing 100190, China
| | - Carlo U Segre
- Department of Physics and Center for Synchrotron Radiation Research and Instrumentation, Illinois Institute of Technology, 3101 South Dearborn Street, Chicago, Illinois 60616, United States
| | - Mark Croft
- Department of Physics and Astronomy, Rutgers, The State University of New Jersey, 136 Frelinghuysen Road, Piscataway, New Jersey 08854, United States
| | - Saul H Lapidus
- Advanced Photon Source, Argonne National Laboratory, Lemont, Illinois 60439, United States
| | - Corey E Frank
- Department of Chemistry and Chemical Biology, Rutgers, The State University of New Jersey, 123 Bevier Road, Piscataway, New Jersey 08854, United States
| | - Youguo Shi
- Beijing National Laboratory for Condensed Matter Physics and Institute of Physics, Chinese Academy of Sciences (CAS), Beijing 100190, China
| | - Changqing Jin
- Beijing National Laboratory for Condensed Matter Physics and Institute of Physics, Chinese Academy of Sciences (CAS), Beijing 100190, China
| | - David Walker
- Lamont Doherty Earth Observatory, Columbia University, 61 Route 9W, P.O. Box 1000, Palisades, New York 10964, United States
| | - Martha Greenblatt
- Department of Chemistry and Chemical Biology, Rutgers, The State University of New Jersey, 123 Bevier Road, Piscataway, New Jersey 08854, United States
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15
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Kondori A, Jiang Z, Esmaeilirad M, Tamadoni Saray M, Kakekhani A, Kucuk K, Navarro Munoz Delgado P, Maghsoudipour S, Hayes J, Johnson CS, Segre CU, Shahbazian-Yassar R, Rappe AM, Asadi M. Kinetically Stable Oxide Overlayers on Mo 3 P Nanoparticles Enabling Lithium-Air Batteries with Low Overpotentials and Long Cycle Life. Adv Mater 2020; 32:e2004028. [PMID: 33169392 DOI: 10.1002/adma.202004028] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/12/2020] [Revised: 10/03/2020] [Indexed: 06/11/2023]
Abstract
The main drawbacks of today's state-of-the-art lithium-air (Li-air) batteries are their low energy efficiency and limited cycle life due to the lack of earth-abundant cathode catalysts that can drive both oxygen reduction and evolution reactions (ORR and OER) at high rates at thermodynamic potentials. Here, inexpensive trimolybdenum phosphide (Mo3 P) nanoparticles with an exceptional activity-ORR and OER current densities of 7.21 and 6.85 mA cm-2 at 2.0 and 4.2 V versus Li/Li+ , respectively-in an oxygen-saturated non-aqueous electrolyte are reported. The Tafel plots indicate remarkably low charge transfer resistance-Tafel slopes of 35 and 38 mV dec-1 for ORR and OER, respectively-resulting in the lowest ORR overpotential of 4.0 mV and OER overpotential of 5.1 mV reported to date. Using this catalyst, a Li-air battery cell with low discharge and charge overpotentials of 80 and 270 mV, respectively, and high energy efficiency of 90.2% in the first cycle is demonstrated. A long cycle life of 1200 is also achieved for this cell. Density functional theory calculations of ORR and OER on Mo3 P (110) reveal that an oxide overlayer formed on the surface gives rise to the observed high ORR and OER electrocatalytic activity and small discharge/charge overpotentials.
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Affiliation(s)
- Alireza Kondori
- Department of Chemical and Biological Engineering, Illinois Institute of Technology, Chicago, IL, 60616, USA
| | - Zhen Jiang
- Department of Chemistry, University of Pennsylvania, Philadelphia, PA, 19104-6323, USA
| | - Mohammadreza Esmaeilirad
- Department of Chemical and Biological Engineering, Illinois Institute of Technology, Chicago, IL, 60616, USA
| | - Mahmoud Tamadoni Saray
- Department of Mechanical and Industrial Engineering, University of Illinois at Chicago, Chicago, IL, 60607, USA
| | - Arvin Kakekhani
- Department of Chemistry, University of Pennsylvania, Philadelphia, PA, 19104-6323, USA
| | - Kamil Kucuk
- Department of Physics and CSRRI, Illinois Institute of Technology, Chicago, IL, 60616, USA
| | - Pablo Navarro Munoz Delgado
- Department of Chemical and Biological Engineering, Illinois Institute of Technology, Chicago, IL, 60616, USA
| | - Sadaf Maghsoudipour
- Department of Chemical and Biological Engineering, Illinois Institute of Technology, Chicago, IL, 60616, USA
| | - John Hayes
- Department of Chemical and Biological Engineering, Illinois Institute of Technology, Chicago, IL, 60616, USA
| | - Christopher S Johnson
- Chemical Sciences and Engineering Division, Argonne National Laboratory, Lemont, IL, 60439, USA
| | - Carlo U Segre
- Department of Physics and CSRRI, Illinois Institute of Technology, Chicago, IL, 60616, USA
| | - Reza Shahbazian-Yassar
- Department of Mechanical and Industrial Engineering, University of Illinois at Chicago, Chicago, IL, 60607, USA
| | - Andrew M Rappe
- Department of Chemistry, University of Pennsylvania, Philadelphia, PA, 19104-6323, USA
| | - Mohammad Asadi
- Department of Chemical and Biological Engineering, Illinois Institute of Technology, Chicago, IL, 60616, USA
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16
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Zhou Y, Song E, Chen W, Segre CU, Zhou J, Lin YC, Zhu C, Ma R, Liu P, Chu S, Thomas T, Yang M, Liu Q, Suenaga K, Liu Z, Liu J, Wang J. Dual-Metal Interbonding as the Chemical Facilitator for Single-Atom Dispersions. Adv Mater 2020; 32:e2003484. [PMID: 33030787 DOI: 10.1002/adma.202003484] [Citation(s) in RCA: 40] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/21/2020] [Revised: 08/23/2020] [Indexed: 05/27/2023]
Abstract
Atomically dispersed catalysts, with maximized atom utilization of expensive metal components and relatively stable ligand structures, offer high reactivity and selectivity. However, the formation of atomic-scale metals without aggregation remains a formidable challenge due to thermodynamic stabilization driving forces. Here, a top-down process is presented that starts from iron nanoparticles, using dual-metal interbonds (RhFe bonding) as a chemical facilitator to spontaneously convert Fe nanoparticles to single atoms at low temperatures. The presence of RhFe bonding between adjacent Fe and Rh single atoms contributes to the thermodynamic stability, which facilitates the stripping of a single Fe atom from the Fe nanoparticles, leading to the stabilized single atom. The dual single-atom Rh-Fe catalyst renders excellent electrocatalytic performance for the hydrogen evolution reaction in an acidic electrolyte. This discovery of dual-metal interbonding as a chemical facilitator paves a novel route for atomic dispersion of chemical metals and the design of efficient catalysts at the atomic scale.
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Affiliation(s)
- Yao Zhou
- The State Key Laboratory of High Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics, Chinese Academy of Sciences, 1295 Dingxi Road, Shanghai, 200050, China
- Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Erhong Song
- The State Key Laboratory of High Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics, Chinese Academy of Sciences, 1295 Dingxi Road, Shanghai, 200050, China
- Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Wei Chen
- Department of Mechanical, Materials and Aerospace Engineering, Illinois Institute of Technology, Chicago, IL, 60616, USA
| | - Carlo U Segre
- Department of Physics & Center for Synchrotron Radiation Research and Instrumentation, Illinois Institute of Technology, Chicago, IL, 60616, USA
| | - Jiadong Zhou
- School of Materials Science and Engineering, Nanyang Technological University, Singapore, 639798, Singapore
| | - Yung-Chang Lin
- Nanomaterials Research Institute, National Institute of Advanced Industrial Science and Technology (AIST), Tsukuba, 305-8565, Japan
| | - Chao Zhu
- School of Materials Science and Engineering, Nanyang Technological University, Singapore, 639798, Singapore
| | - Ruguang Ma
- The State Key Laboratory of High Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics, Chinese Academy of Sciences, 1295 Dingxi Road, Shanghai, 200050, China
| | - Pan Liu
- State Key Laboratory of Metal Matrix Composites, School of Materials Science and Engineering, Shanghai Jiao Tong University, Shanghai, 200030, China
| | - Shufen Chu
- State Key Laboratory of Metal Matrix Composites, School of Materials Science and Engineering, Shanghai Jiao Tong University, Shanghai, 200030, China
| | - Tiju Thomas
- Department of Metallurgical and Materials Engineering, Indian Institute of Technology Madras, Adyar, Chennai, Tamil Nadu, 600036, India
| | - Minghui Yang
- Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, 1219 Zhongguan West Road, Ningbo, 315201, China
| | - Qian Liu
- The State Key Laboratory of High Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics, Chinese Academy of Sciences, 1295 Dingxi Road, Shanghai, 200050, China
- Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Kazu Suenaga
- Nanomaterials Research Institute, National Institute of Advanced Industrial Science and Technology (AIST), Tsukuba, 305-8565, Japan
| | - Zheng Liu
- School of Materials Science and Engineering, Nanyang Technological University, Singapore, 639798, Singapore
| | - Jianjun Liu
- The State Key Laboratory of High Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics, Chinese Academy of Sciences, 1295 Dingxi Road, Shanghai, 200050, China
- Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Jiacheng Wang
- The State Key Laboratory of High Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics, Chinese Academy of Sciences, 1295 Dingxi Road, Shanghai, 200050, China
- Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, Beijing, 100049, China
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17
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Esmaeilirad M, Kondori A, Song B, Ruiz Belmonte A, Wei J, Kucuk K, Khanvilkar SM, Efimoff E, Chen W, Segre CU, Shahbazian-Yassar R, Asadi M. Oxygen Functionalized Copper Nanoparticles for Solar-Driven Conversion of Carbon Dioxide to Methane. ACS Nano 2020; 14:2099-2108. [PMID: 31971779 DOI: 10.1021/acsnano.9b08792] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Solar conversion of carbon dioxide (CO2) into hydrocarbon fuels offers a promising approach to fulfill the world's ever-increasing energy demands in a sustainable way. However, a highly active catalyst that can also tune the selectivity toward desired products must be developed for an effective process. Here, we present oxygen functionalized copper (OFn-Cu) nanoparticles as a highly active and methane (CH4) selective catalyst for the electrocatalytic CO2 reduction reaction. Our electrochemical results indicate that OFn-Cu (5 nm) nanoparticles with an oxidized layer at the surface reach a maximum CH4 formation current density and turnover frequency of 36.24 mA/cm2 and of 0.17 s-1 at the potential of -1.05 V vs RHE, respectively, exceeding the performance of existing Cu and Cu-based catalysts. Characterization results indicate that the surface of the OFn-Cu nanoparticles consists of an oxygen functionalized layer in the form of Cu2+ (CuO) separated from the underneath elemental Cu by a Cu+ (Cu2O) sublayer. Density functional theory calculations also confirm that presence of the O site at the CuO (101) surface is the main reason for the enhanced activity and selectivity. Using this catalyst, we have demonstrated a flow cell with an active area of 25 cm2 that utilizes solar energy to produce 7.24 L of CH4 after 10 h of continuous process at a cell power density of 30 mW/cm2.
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Affiliation(s)
- Mohammadreza Esmaeilirad
- Department of Chemical and Biological Engineering , Illinois Institute of Technology , Chicago , Illinois 60616 , United States
| | - Alireza Kondori
- Department of Chemical and Biological Engineering , Illinois Institute of Technology , Chicago , Illinois 60616 , United States
| | - Boao Song
- Department of Mechanical and Industrial Engineering , University of Illinois at Chicago , Chicago , Illinois 60607 , United States
| | - Andres Ruiz Belmonte
- Department of Chemical and Biological Engineering , Illinois Institute of Technology , Chicago , Illinois 60616 , United States
| | - Jialiang Wei
- Department of Mechanical, Materials, and Aerospace Engineering , Illinois Institute of Technology , Chicago , Illinois 60616 , United States
| | - Kamil Kucuk
- Department of Physics and CSRRI , Illinois Institute of Technology , Chicago , Illinois 60616 , United States
| | - Shubhada Mahesh Khanvilkar
- Department of Chemical and Biological Engineering , Illinois Institute of Technology , Chicago , Illinois 60616 , United States
| | - Erin Efimoff
- Department of Chemical and Biological Engineering , Illinois Institute of Technology , Chicago , Illinois 60616 , United States
| | - Wei Chen
- Department of Mechanical, Materials, and Aerospace Engineering , Illinois Institute of Technology , Chicago , Illinois 60616 , United States
| | - Carlo U Segre
- Department of Physics and CSRRI , Illinois Institute of Technology , Chicago , Illinois 60616 , United States
| | - Reza Shahbazian-Yassar
- Department of Mechanical and Industrial Engineering , University of Illinois at Chicago , Chicago , Illinois 60607 , United States
| | - Mohammad Asadi
- Department of Chemical and Biological Engineering , Illinois Institute of Technology , Chicago , Illinois 60616 , United States
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18
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Ashuri M, Dunya H, Yue Z, Alramahi D, Mei X, Kucuk K, Aryal S, Segre CU, Mandal BK. Enhancement in Electrochemical Performance of Lithium‐Sulfur Cells through Sulfur Encapsulation in Hollow Carbon Nanospheres Coated with Ultra‐Thin Aluminum Fluoride Layer. ChemistrySelect 2019. [DOI: 10.1002/slct.201903932] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Maziar Ashuri
- Department of MechanicalMaterials, & Aerospace EngineeringIllinois Institute of Technology Chicago IL 60616 USA
| | - Hamza Dunya
- Department of ChemistryIllinois Institute of Technology Chicago IL 60616 USA
| | - Zheng Yue
- Department of ChemistryIllinois Institute of Technology Chicago IL 60616 USA
| | - Dana Alramahi
- Department of ChemistryIllinois Institute of Technology Chicago IL 60616 USA
| | - Xinyi Mei
- Department of ChemistryIllinois Institute of Technology Chicago IL 60616 USA
| | - Kamil Kucuk
- Department of Physics & CSRRIIllinois Institute of Technology Chicago IL 60616 USA
| | - Shankar Aryal
- Department of Physics & CSRRIIllinois Institute of Technology Chicago IL 60616 USA
| | - Carlo U. Segre
- Department of Physics & CSRRIIllinois Institute of Technology Chicago IL 60616 USA
| | - Braja K. Mandal
- Department of ChemistryIllinois Institute of Technology Chicago IL 60616 USA
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19
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Young MJ, Kiryutina T, Bedford NM, Woehl TJ, Segre CU. Discovery of Anion Insertion Electrochemistry in Layered Hydroxide Nanomaterials. Sci Rep 2019; 9:2462. [PMID: 30792465 PMCID: PMC6384940 DOI: 10.1038/s41598-019-39052-1] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2018] [Accepted: 01/14/2019] [Indexed: 11/16/2022] Open
Abstract
Electrode materials which undergo anion insertion are a void in the materials innovation landscape and a missing link to energy efficient electrochemical desalination. In recent years layered hydroxides (LHs) have been studied for a range of electrochemical applications, but to date have not been considered as electrode materials for anion insertion electrochemistry. Here, we show reversible anion insertion in a LH for the first time using Co and Co-V layer hydroxides. By pairing in situ synchrotron and quartz crystal microbalance measurements with a computational unified electrochemical band-diagram description, we reveal a previously undescribed anion-insertion mechanism occurring in Co and Co-V LHs. This proof of concept study demonstrates reversible electrochemical anion insertion in LHs without significant material optimization. These results coupled with our foundational understanding of anion insertion electrochemistry establishes LHs as a materials platform for anion insertion electrochemistry with the potential for future application to electrochemical desalination.
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Affiliation(s)
- Matthias J Young
- Applied Materials Division, Argonne National Laboratory, Argonne, Illinois, 60439, USA.
- Applied Chemicals and Materials Division, National Institute of Standards and Technology, Boulder, Colorado, 80305, USA.
- Department of Biomedical, Biological, and Chemical Engineering, University of Missouri, Columbia, MO, 65211, USA.
- Department of Chemistry, University of Missouri, Columbia, MO, 65211, USA.
| | - Tatyana Kiryutina
- Applied Chemicals and Materials Division, National Institute of Standards and Technology, Boulder, Colorado, 80305, USA
| | - Nicholas M Bedford
- Applied Chemicals and Materials Division, National Institute of Standards and Technology, Boulder, Colorado, 80305, USA.
- School of Chemical Engineering, University of New South Wales, Sydney, NSW, 2052, Australia.
| | - Taylor J Woehl
- Applied Chemicals and Materials Division, National Institute of Standards and Technology, Boulder, Colorado, 80305, USA
- Department of Chemical and Biomolecular Engineering, University of Maryland, College Park, Maryland, 20742, USA
| | - Carlo U Segre
- Department of Physics, Illinois Institute of Technology, Chicago, Illinois, 60616, USA
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20
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Mukherjee S, Ganegoda H, Kumar A, Pal S, Segre CU, Sarma DD. Evolution of the Local Structure within Chromophoric Mn-O 5 Trigonal Bipyramids in YMn 1- xIn xO 3 with Composition. Inorg Chem 2018; 57:9012-9019. [PMID: 30036043 DOI: 10.1021/acs.inorgchem.8b00997] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
We have investigated the local environment around Mn3+ and In3+ ions in YMn1- xIn xO3 chromophores to understand the origin of the intense blue color for small values of x in these solid solutions. While X-ray diffraction results provide an average description of the trigonal bipyramidal (TBP) units about Mn/In atoms with five oxygens surrounding the cation, the X-ray absorption near edge structure (XANES) as well as extended X-ray absorption fine structure (EXAFS) of these materials clearly suggest the presence of two different TBP environments, one of which is similar to MnO5 TBP in YMnO3. EXAFS in conjunction with first-principles calculations show that replacing larger In3+ ions by smaller Mn3+ ones additionally gives rise to another TBP strongly distorted along the axial direction, expanding one of the axial Mn-O bonds by ∼11%. The relative fraction of these two environments changes in close agreement with the global stoichiometry with the elongated TBP, therefore, being dominant in the regime of the low Mn content. This local structural difference is responsible for the intense, but relatively narrow, absorption feature in the red-yellow region of the absorption spectrum, and hence YMn1- xIn xO3 appears blue for small Mn dopings. This distortion is relatively less abundant in Mn-rich compositions, and therefore, such compositions appear black, controlled by the wide absorption feature of the trigonal bipyramid coordination with Mn-O bond lengths that are essentially the same as those in YMnO3, covering the entire visible range. The chromophore properties are, thus, governed by the ratio of these two MnO5 TBP environments, one with a characteristic optical absorption giving it a blue color and the other absorbing over the entire visible range.
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Affiliation(s)
- Soham Mukherjee
- Solid State and Structural Chemistry Unit , Indian Institute of Science , Bengaluru 560012 , India
| | - Hasitha Ganegoda
- CSRRI & Department of Physics , Illinois Institute of Technology , Chicago , Illinois 60616 , United States
| | - Abhinav Kumar
- Solid State and Structural Chemistry Unit , Indian Institute of Science , Bengaluru 560012 , India
| | - Somnath Pal
- Solid State and Structural Chemistry Unit , Indian Institute of Science , Bengaluru 560012 , India
| | - Carlo U Segre
- CSRRI & Department of Physics , Illinois Institute of Technology , Chicago , Illinois 60616 , United States
| | - D D Sarma
- Solid State and Structural Chemistry Unit , Indian Institute of Science , Bengaluru 560012 , India
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21
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Moazzen E, Timofeeva EV, Segre CU. Role of crystal lattice templating and galvanic coupling in enhanced reversible capacity of Ni(OH)2/Co(OH)2 core/shell battery cathode. Electrochim Acta 2017. [DOI: 10.1016/j.electacta.2017.11.114] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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22
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Sen S, Chow CM, Moazzen E, Segre CU, Timofeeva EV. Electroactive nanofluids with high solid loading and low viscosity for rechargeable redox flow batteries. J APPL ELECTROCHEM 2017. [DOI: 10.1007/s10800-017-1063-4] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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23
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Li MR, Deng Z, Lapidus SH, Stephens PW, Segre CU, Croft M, Paria Sena R, Hadermann J, Walker D, Greenblatt M. Ba 3(Cr 0.97(1)Te 0.03(1)) 2TeO 9: in Search of Jahn-Teller Distorted Cr(II) Oxide. Inorg Chem 2016; 55:10135-10142. [PMID: 27680715 DOI: 10.1021/acs.inorgchem.6b01047] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
A novel 6H-type hexagonal perovskite Ba3(Cr0.97(1)Te0.03(1))2TeO9 was prepared at high pressure (6 GPa) and temperature (1773 K). Both transmission electron microscopy and synchrotron powder X-ray diffraction data demonstrate that Ba3(Cr0.97(1)Te0.03(1))2TeO9 crystallizes in P63/mmc with face-shared (Cr0.97(1)Te0.03(1))O6 octahedral pairs interconnected with TeO6 octahedra via corner-sharing. Structure analysis shows a mixed Cr2+/Cr3+ valence state with ∼10% Cr2+. The existence of Cr2+ in Ba3(Cr2+0.10(1)Cr3+0.87(1)Te6+0.03)2TeO9 is further evidenced by X-ray absorption near-edge spectroscopy. Magnetic properties measurements show a paramagnetic response down to 4 K and a small glassy-state curvature at low temperature. In this work, the octahedral Cr2+O6 component is stabilized in an oxide material for the first time; the expected Jahn-Teller distortion of high-spin (d4) Cr2+ is not found, which is attributed to the small proportion of Cr2+ (∼10%) and the face-sharing arrangement of CrO6 octahedral pairs, which structurally disfavor axial distortion.
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Affiliation(s)
- Man-Rong Li
- Department of Chemistry and Chemical Biology, Rutgers, The State University of New Jersey , 610 Taylor Road, Piscataway, New Jersey 08854, United States
| | - Zheng Deng
- Department of Chemistry and Chemical Biology, Rutgers, The State University of New Jersey , 610 Taylor Road, Piscataway, New Jersey 08854, United States
| | - Saul H Lapidus
- Advanced Photon Source, Argonne National Laboratory , Lemont, Illinois 60439, United States
| | - Peter W Stephens
- Department of Physics & Astronomy, State University of New York , Stony Brook, New York 11794, United States
| | - Carlo U Segre
- Department of Physics & CSRRI, Illinois Institute of Technology , 3300 South Federal Street, Chicago, Illinois 60616, United States
| | - Mark Croft
- Department of Physics and Astronomy, Rutgers, The State University of New Jersey , 136 Frelinghusen Road, Piscataway, New Jersey 08854, United States
| | - Robert Paria Sena
- EMAT, University of Antwerp , Groenenborgerlaan 171, B-2020 Antwerp, Belgium
| | - Joke Hadermann
- EMAT, University of Antwerp , Groenenborgerlaan 171, B-2020 Antwerp, Belgium
| | - David Walker
- Lamont Doherty Earth Observatory, Columbia University , 61 Route 9W, PO Box 1000, Palisades, New York 10964, United States
| | - Martha Greenblatt
- Department of Chemistry and Chemical Biology, Rutgers, The State University of New Jersey , 610 Taylor Road, Piscataway, New Jersey 08854, United States
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24
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Weimer MS, Hu B, Kraft SJ, Gordon RG, Segre CU, Hock AS. Synthetic and Spectroscopic Study of the Mechanism of Atomic Layer Deposition of Tin Dioxide. Organometallics 2016. [DOI: 10.1021/acs.organomet.5b01004] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
| | - Bo Hu
- Chemical
Sciences and Engineering Division, Argonne National Laboratory, 9700 South Cass Avenue, Argonne, Illinois 60439, United States
| | - Steven J. Kraft
- Chemical
Sciences and Engineering Division, Argonne National Laboratory, 9700 South Cass Avenue, Argonne, Illinois 60439, United States
| | - Roy G. Gordon
- Department
of Chemistry and Chemical Biology, Harvard University, 12 Oxford
Street, Cambridge, Massachusetts 02138, United States
| | | | - Adam S. Hock
- Chemical
Sciences and Engineering Division, Argonne National Laboratory, 9700 South Cass Avenue, Argonne, Illinois 60439, United States
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25
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Eigenbrodt BC, Young AM, Howell TG, Segre CU, Reitz TL. High-Temperature, In Situ X-ray Absorption Study of Sr 2
MgMoO 6
Solid-Oxide Fuel-Cell Anode Materials. ChemElectroChem 2015. [DOI: 10.1002/celc.201500122] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Bryan C. Eigenbrodt
- Department of Chemistry; Villanova University, 800 E.; Lancaster Avenue Villanova PA 19085 USA
| | - Anthony M. Young
- Aerospace Systems Directorate; Air Force Research Laboratory, Wright Patterson Air Force Base; OH 45433 USA
| | - Thomas G. Howell
- Aerospace Systems Directorate; Air Force Research Laboratory, Wright Patterson Air Force Base; OH 45433 USA
| | - Carlo U. Segre
- Physics Department and CSRRI; Illinois Institute of Technology; Chicago IL 60616 USA
| | - Thomas L. Reitz
- Aerospace Systems Directorate; Air Force Research Laboratory, Wright Patterson Air Force Base; OH 45433 USA
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26
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Li D, Kaplan DI, Chang HS, Seaman JC, Jaffé PR, Koster van Groos P, Scheckel KG, Segre CU, Chen N, Jiang DT, Newville M, Lanzirotti A. Spectroscopic evidence of uranium immobilization in acidic wetlands by natural organic matter and plant roots. Environ Sci Technol 2015; 49:2823-2832. [PMID: 25634067 DOI: 10.1021/es505369g] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
Biogeochemistry of uranium in wetlands plays important roles in U immobilization in storage ponds of U mining and processing facilities but has not been well understood. The objective of this work was to study molecular mechanisms responsible for high U retention by Savannah River Site (SRS) wetland sediments under varying redox and acidic (pH = 2.6-5.8) conditions using U L3-edge X-ray absorption spectroscopy. Uranium in the SRS wetland sediments existed primarily as U(VI) bonded as a bidentate to carboxylic sites (U-C bond distance at ∼2.88 Å), rather than phenolic or other sites of natural organic matter (NOM). In microcosms simulating the SRS wetland processes, U immobilization on roots was 2 orders of magnitude higher than on the adjacent brown or more distant white sands in which U was U(VI). Uranium on the roots were both U(IV) and U(VI), which were bonded as a bidentate to carbon, but the U(VI) may also form a U phosphate mineral. After 140 days of air exposure, all U(IV) was reoxidized to U(VI) but remained as a bidentate bonding to carbon. This study demonstrated NOM and plant roots can highly immobilize U(VI) in the SRS acidic sediments, which has significant implication for the long-term stewardship of U-contaminated wetlands.
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Affiliation(s)
- Dien Li
- Savannah River National Laboratory, Aiken, South Carolina 29808, United States
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27
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Khan AH, Dalui A, Mukherjee S, Segre CU, Sarma DD, Acharya S. Efficient Solid‐State Light‐Emitting CuCdS Nanocrystals Synthesized in Air. Angew Chem Int Ed Engl 2015. [DOI: 10.1002/ange.201409518] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Ali Hossain Khan
- Centre for Advanced Materials, Indian Association for the Cultivation of Science, Jadavpur, Kolkata 700032 (India)
| | - Amit Dalui
- Centre for Advanced Materials, Indian Association for the Cultivation of Science, Jadavpur, Kolkata 700032 (India)
| | - Soham Mukherjee
- Solid State and Structural Chemistry Unit, Indian Institute of Science, Bangalore 560012 (India)
| | - Carlo U. Segre
- Department of Physics & CSRRI, Illinois Institute of Technology, Chicago, IL 60616 (USA)
| | - D. D. Sarma
- Centre for Advanced Materials, Indian Association for the Cultivation of Science, Jadavpur, Kolkata 700032 (India)
- Solid State and Structural Chemistry Unit, Indian Institute of Science, Bangalore 560012 (India)
- Council of Scientific and Industrial Research—Network of Institutes for Solar Energy (CSIR‐NISE), New Delhi 110001 (India)
| | - Somobrata Acharya
- Centre for Advanced Materials, Indian Association for the Cultivation of Science, Jadavpur, Kolkata 700032 (India)
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28
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Khan AH, Dalui A, Mukherjee S, Segre CU, Sarma DD, Acharya S. Efficient Solid‐State Light‐Emitting CuCdS Nanocrystals Synthesized in Air. Angew Chem Int Ed Engl 2015; 54:2643-8. [DOI: 10.1002/anie.201409518] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2014] [Indexed: 11/10/2022]
Affiliation(s)
- Ali Hossain Khan
- Centre for Advanced Materials, Indian Association for the Cultivation of Science, Jadavpur, Kolkata 700032 (India)
| | - Amit Dalui
- Centre for Advanced Materials, Indian Association for the Cultivation of Science, Jadavpur, Kolkata 700032 (India)
| | - Soham Mukherjee
- Solid State and Structural Chemistry Unit, Indian Institute of Science, Bangalore 560012 (India)
| | - Carlo U. Segre
- Department of Physics & CSRRI, Illinois Institute of Technology, Chicago, IL 60616 (USA)
| | - D. D. Sarma
- Centre for Advanced Materials, Indian Association for the Cultivation of Science, Jadavpur, Kolkata 700032 (India)
- Solid State and Structural Chemistry Unit, Indian Institute of Science, Bangalore 560012 (India)
- Council of Scientific and Industrial Research—Network of Institutes for Solar Energy (CSIR‐NISE), New Delhi 110001 (India)
| | - Somobrata Acharya
- Centre for Advanced Materials, Indian Association for the Cultivation of Science, Jadavpur, Kolkata 700032 (India)
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29
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Németh K, Unni AK, Kalnmals C, Segre CU, Kaduk J, Bloom ID, Maroni VA. The synthesis of ternary acetylides with tellurium: Li2TeC2 and Na2TeC2. RSC Adv 2015. [DOI: 10.1039/c5ra08983b] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Novel ternary acetylides Li2TeC2 and Na2TeC2 were synthesized via the robust direct reaction of tellurium powder and mono- or bialkali acetylides in liquid ammonia.
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Affiliation(s)
- Károly Németh
- Physics Department
- Illinois Institute of Technology
- Chicago
- USA
| | - Aditya K. Unni
- Department of Chemistry
- Illinois Institute of Technology
- Chicago
- USA
| | | | - Carlo U. Segre
- Physics Department and CSRRI
- Illinois Institute of Technology
- Chicago
- USA
| | - James Kaduk
- Department of Chemistry
- Illinois Institute of Technology
- Chicago
- USA
| | - Ira D. Bloom
- Chemical Sciences and Engineering Division
- Argonne National Laboratory
- Argonne
- USA
| | - Victor A. Maroni
- Chemical Sciences and Engineering Division
- Argonne National Laboratory
- Argonne
- USA
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30
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Pelliccione CJ, Timofeeva EV, Katsoudas JP, Segre CU. Note: Sample chamber for in situ x-ray absorption spectroscopy studies of battery materials. Rev Sci Instrum 2014; 85:126108. [PMID: 25554344 DOI: 10.1063/1.4904703] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
In situ x-ray absorption spectroscopy (XAS) provides element-specific characterization of both crystalline and amorphous phases and enables direct correlations between electrochemical performance and structural characteristics of cathode and anode materials. In situ XAS measurements are very demanding to the design of the experimental setup. We have developed a sample chamber that provides electrical connectivity and inert atmosphere for operating electrochemical cells and also accounts for x-ray interactions with the chamber and cell materials. The design of the sample chamber for in situ measurements is presented along with example XAS spectra from anode materials in operating pouch cells at the Zn and Sn K-edges measured in fluorescence and transmission modes, respectively.
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Affiliation(s)
- C J Pelliccione
- Department of Physics and CSRRI, Illinois Institute of Technology, Chicago, Illinois 60616, USA
| | - E V Timofeeva
- Energy Systems Division, Argonne National Laboratory, Argonne, Illinois 60439, USA
| | - J P Katsoudas
- Department of Physics and CSRRI, Illinois Institute of Technology, Chicago, Illinois 60616, USA
| | - C U Segre
- Department of Physics and CSRRI, Illinois Institute of Technology, Chicago, Illinois 60616, USA
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31
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Zhu B, Li W, Lewis RV, Segre CU, Wang R. E-spun composite fibers of collagen and dragline silk protein: fiber mechanics, biocompatibility, and application in stem cell differentiation. Biomacromolecules 2014; 16:202-13. [PMID: 25405355 PMCID: PMC4294589 DOI: 10.1021/bm501403f] [Citation(s) in RCA: 48] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
![]()
Biocomposite
matrices with high mechanical strength, high stability,
and the ability to direct matrix-specific stem cell differentiation
are essential for the reconstruction of lesioned tissues in tissue
engineering and cell therapeutics. Toward this end, we used the electrospinning
technique to fabricate well-aligned composite fibers from collagen
and spider dragline silk protein, obtained from the milk of transgenic
goats, mimicking the native extracellular matrix (ECM) on a similar
scale. Collagen and the dragline silk proteins were found to mix homogeneously
at all ratios in the electrospun (E-spun) fibers. As a result, the
ultimate tensile strength and elasticity of the fibers increased monotonically
with silk percentage, whereas the stretchability was slightly reduced.
Strikingly, we found that the incorporation of silk proteins to collagen
dramatically increased the matrix stability against excessive fiber
swelling and shape deformation in cell culture medium. When human
decidua parietalis placental stem cells (hdpPSCs) were seeded on the
collagen–silk matrices, the matrices were found to support
cell proliferation at a similar rate as that of the pure collagen
matrix, but they provided cell adhesion with reduced strengths and
induced cell polarization at varied levels. Matrices containing 15
and 30 wt % silk in collagen (CS15, CS30) were found to induce a level
of neural differentiation comparable to that of pure collagen. In
particular, CS15 matrix induced the highest extent of cell polarization
and promoted the development of extended 1D neural filaments strictly
in-line with the aligned fibers. Taking the increased mechanical strength
and fiber stability into consideration, CS15 and CS30 E-spun fibers
offer better alternatives to pure collagen fibers as scaffolds that
can be potentially utilized in neural tissue repair and the development
of future nanobiodevices.
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Affiliation(s)
- Bofan Zhu
- Department of Biological and Chemical Sciences, ‡Department of Physics, Illinois Institute of Technology , Chicago, Illinois 60616, United States
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32
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Karanfil C, Bunker G, Newville M, Segre CU, Chapman D. Quantitative performance measurements of bent crystal Laue analyzers for X-ray fluorescence spectroscopy. J Synchrotron Radiat 2012; 19:375-380. [PMID: 22514172 PMCID: PMC3329957 DOI: 10.1107/s0909049512003937] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/21/2011] [Accepted: 01/30/2012] [Indexed: 05/31/2023]
Abstract
Third-generation synchrotron radiation sources pose difficult challenges for energy-dispersive detectors for XAFS because of their count rate limitations. One solution to this problem is the bent crystal Laue analyzer (BCLA), which removes most of the undesired scatter and fluorescence before it reaches the detector, effectively eliminating detector saturation due to background. In this paper experimental measurements of BCLA performance in conjunction with a 13-element germanium detector, and a quantitative analysis of the signal-to-noise improvement of BCLAs are presented. The performance of BCLAs are compared with filters and slits.
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Affiliation(s)
- C Karanfil
- Department of Physics, Faculty of Science, University of Muğla, Kötekli-Muğla 48187, Turkey.
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Jia Q, Lewis EA, Grice C, Smotkin ES, Segre CU. In situ XAFS studies of the oxygen reduction reaction on carbon supported Pt and PtNi(1:1) catalysts. ACTA ACUST UNITED AC 2009. [DOI: 10.1088/1742-6596/190/1/012157] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Stoupin S, Rivera H, Li Z, Segre CU, Korzeniewski C, Casadonte, Jr DJ, Inoue H, Smotkin ES. Structural analysis of sonochemically prepared PtRu versus Johnson Matthey PtRu in operating direct methanol fuel cells. Phys Chem Chem Phys 2008; 10:6430-7. [DOI: 10.1039/b806345c] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Erdemir D, Chattopadhyay S, Guo L, Ilavsky J, Amenitsch H, Segre CU, Myerson AS. Relationship between self-association of glycine molecules in supersaturated solutions and solid state outcome. Phys Rev Lett 2007; 99:115702. [PMID: 17930450 DOI: 10.1103/physrevlett.99.115702] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/18/2006] [Indexed: 05/25/2023]
Abstract
Small angle x-ray scattering is utilized to directly examine the formation of clusters in supersaturated solutions of glycine, in an attempt to understand their role in the nucleation process. The results suggest that the majority of glycine molecules exist as dimers in aqueous solutions, and monomers in 13% (upsilon/upsilon) acetic acid-water mixtures. As the water and acetic acid-water solutions crystallize into alpha and gamma forms, respectively, the findings indicate a direct correlation between molecular self-association in solution and the polymorphic outcome.
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Affiliation(s)
- Deniz Erdemir
- Department of Chemical Engineering, Illinois Institute of Technology, Chicago, Illinois 60616, USA
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Stoupin S, Chung EH, Chattopadhyay S, Segre CU, Smotkin ES. Pt and Ru X-ray Absorption Spectroscopy of PtRu Anode Catalysts in Operating Direct Methanol Fuel Cells. J Phys Chem B 2006; 110:9932-8. [PMID: 16706450 DOI: 10.1021/jp057047x] [Citation(s) in RCA: 49] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
In situ X-ray absorption spectroscopy, ex situ X-ray fluorescence, and X-ray powder diffraction enabled detailed core analysis of phase segregated nanostructured PtRu anode catalysts in an operating direct methanol fuel cell (DMFC). No change in the core structures of the phase segregated catalyst was observed as the potential traversed the current onset potential of the DMFC. The methodology was exemplified using a Johnson Matthey unsupported PtRu (1:1) anode catalyst incorporated into a DMFC membrane electrode assembly. During DMFC operation the catalyst is essentially metallic with half of the Ru incorporated into a face-centered cubic (FCC) Pt alloy lattice and the remaining half in an amorphous phase. The extended X-ray absorption fine structure (EXAFS) analysis suggests that the FCC lattice is not fully disordered. The EXAFS indicates that the Ru-O bond lengths were significantly shorter than those reported for Ru-O of ruthenium oxides, suggesting that the phases in which the Ru resides in the catalysts are not similar to oxides.
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Affiliation(s)
- Stanislav Stoupin
- Physics Division, Department of Biological, Chemical, and Physical Sciences, Illinois Institute of Technology, Chicago, 60616, USA
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Karanfil C, Chapman D, Segre CU, Bunker G. A device for selecting and rejecting X-ray harmonics in synchrotron radiation beams. J Synchrotron Radiat 2004; 11:393-398. [PMID: 15310955 DOI: 10.1107/s0909049504016711] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/20/2003] [Accepted: 07/08/2004] [Indexed: 05/24/2023]
Abstract
A practical device ('beam cleaner') is described that selects a specific harmonic (e.g. third order) from other nearby harmonics (e.g. fourth or fifth orders) that are transmitted by the beamline monochromator. The ability to isolate and use a clean harmonic beam effectively extends the energy range of existing beamlines. This device is a tunable medium-resolution X-ray bandpass filter, which consists of a double bent Laue crystal post-monochromator. It is a simple and inexpensive device that does not require precision goniometry and can be operated in air. The device can also be used to passively compensate for vertical beam motion as the primary beamline monochromator is scanned. Experimental results are presented that demonstrate the improvement in XAFS data quality under high harmonic conditions.
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Affiliation(s)
- Cahit Karanfil
- Physics Division of BCPS Department, Illinois Institute of Technology, Chicago, IL 60616, USA.
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Zhang K, Dabrowski B, Segre CU, Hinks DG, Schuller IK, Jorgensen JD, Slaski M. Solubility and superconductivity in RE(Ba2-xREx)Cu3O7+δsystems (RE=Nd, Sm, Eu, Gd, Dy). ACTA ACUST UNITED AC 2000. [DOI: 10.1088/0022-3719/20/34/001] [Citation(s) in RCA: 121] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Radaelli PG, Segre CU, Hinks DG, Jorgensen JD. Structural inhomogeneities in oxygen-deficient ErBa2Cu3O6+x associated with the tetragonal-to-orthorhombic transition: Evidence of first-order behavior. Phys Rev B Condens Matter 1992; 45:4923-4929. [PMID: 10002133 DOI: 10.1103/physrevb.45.4923] [Citation(s) in RCA: 28] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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Bhadra R, Brun TO, Beno MA, Dabrowski B, Hinks DG, Liu JZ, Jorgensen JD, Nowicki LJ, Paulikas AP, Schuller IK, Segre CU, Soderholm L, Veal B, Wang HH, Williams JM, Zhang K, Grimsditch M. Raman scattering from high-Tc superconductors. Phys Rev B Condens Matter 1988; 37:5142-5147. [PMID: 9943691 DOI: 10.1103/physrevb.37.5142] [Citation(s) in RCA: 25] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/11/2023]
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Grimsditch M, Brun TO, Bhadra R, Dabrowski B, Hinks DG, Jorgensen JD, Beno MA, Liu JZ, Schuttler HB, Segre CU, Soderholm L, Veal BW, Schuller IK. Is the isotope effect absent in YBa2Cu. Phys Rev Lett 1988; 60:752. [PMID: 10038640 DOI: 10.1103/physrevlett.60.752] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
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Jorgensen JD, Beno MA, Hinks DG, Soderholm L, Volin KJ, Hitterman RL, Grace JD, Schuller IK, Segre CU, Zhang K, Kleefisch MS. Oxygen ordering and the orthorhombic-to-tetragonal phase transition in YBa2Cu. Phys Rev B Condens Matter 1987; 36:3608-3616. [PMID: 9943291 DOI: 10.1103/physrevb.36.3608] [Citation(s) in RCA: 1068] [Impact Index Per Article: 28.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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Neifeld RA, Croft M, Mihalisin T, Segre CU, Madigan M, Torikachvili MS, Maple MB, DeLong LE. Chemical environment and Ce valence: Global trends in transition-metal compounds. Phys Rev B Condens Matter 1985; 32:6928-6931. [PMID: 9936813 DOI: 10.1103/physrevb.32.6928] [Citation(s) in RCA: 33] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/11/2023]
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