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Baek J, Jin Q, Johnson NS, Jiang Y, Ning R, Mehta A, Siahrostami S, Zheng X. Discovery of LaAlO 3 as an efficient catalyst for two-electron water electrolysis towards hydrogen peroxide. Nat Commun 2022; 13:7256. [PMID: 36433962 PMCID: PMC9700689 DOI: 10.1038/s41467-022-34884-4] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2022] [Accepted: 11/04/2022] [Indexed: 11/27/2022] Open
Abstract
Electrochemical two-electron water oxidation reaction (2e-WOR) has drawn significant attention as a promising process to achieve the continuous on-site production of hydrogen peroxide (H2O2). However, compared to the cathodic H2O2 generation, the anodic 2e-WOR is more challenging to establish catalysts due to the severe oxidizing environment. In this study, we combine density functional theory (DFT) calculations with experiments to discover a stable and efficient perovskite catalyst for the anodic 2e-WOR. Our theoretical screening efforts identify LaAlO3 perovskite as a stable, active, and selective candidate for catalyzing 2e-WOR. Our experimental results verify that LaAlO3 achieves an overpotential of 510 mV at 10 mA cm-2 in 4 M K2CO3/KHCO3, lower than those of many reported metal oxide catalysts. In addition, LaAlO3 maintains a stable H2O2 Faradaic efficiency with only a 3% decrease after 3 h at 2.7 V vs. RHE. This computation-experiment synergistic approach introduces another effective direction to discover promising catalysts for the harsh anodic 2e-WOR towards H2O2.
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Affiliation(s)
- Jihyun Baek
- grid.168010.e0000000419368956Department of Mechanical Engineering, Stanford University, Stanford, CA 94305 USA
| | - Qiu Jin
- grid.22072.350000 0004 1936 7697Department of Chemistry, University of Calgary, Calgary, AB T2N 1N4 Canada
| | - Nathan Scott Johnson
- grid.445003.60000 0001 0725 7771Stanford Synchrotron Radiation Lightsource, SLAC National Accelerator Laboratory, Menlo Park, CA 94025 USA
| | - Yue Jiang
- grid.168010.e0000000419368956Department of Mechanical Engineering, Stanford University, Stanford, CA 94305 USA
| | - Rui Ning
- grid.168010.e0000000419368956Department of Materials Science and Engineering, Stanford University, Stanford, CA 94305 USA
| | - Apurva Mehta
- grid.445003.60000 0001 0725 7771Stanford Synchrotron Radiation Lightsource, SLAC National Accelerator Laboratory, Menlo Park, CA 94025 USA
| | - Samira Siahrostami
- grid.22072.350000 0004 1936 7697Department of Chemistry, University of Calgary, Calgary, AB T2N 1N4 Canada
| | - Xiaolin Zheng
- grid.168010.e0000000419368956Department of Mechanical Engineering, Stanford University, Stanford, CA 94305 USA
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Impedance spectroscopy of the low potential range electro-oxidation of glucose on a polycrystalline gold electrode undergoing surface reconstruction. J Electroanal Chem (Lausanne) 2021. [DOI: 10.1016/j.jelechem.2021.115130] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Garba ZN, Zhou W, Zhang M, Yuan Z. A review on the preparation, characterization and potential application of perovskites as adsorbents for wastewater treatment. CHEMOSPHERE 2020; 244:125474. [PMID: 31812058 DOI: 10.1016/j.chemosphere.2019.125474] [Citation(s) in RCA: 28] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/30/2019] [Revised: 11/11/2019] [Accepted: 11/24/2019] [Indexed: 06/10/2023]
Abstract
Perovskite are among the popular materials utilized in many areas of modern industrialization because of their low price, high stability, excellent oxidation activity, adsorptive, catalytic, optical, magnetic, electronic and ferroelectric properties. Over the years, widespread usage of perovskite nanoparticles has been reported due to its various applications which include an environmental catalyst, fuel cells, chemical sensors, magnetic materials, oxygen permeable membranes and adsorbents for wastewater treatment. Various synthetic methods such as the sol-gel method, proteic method, Pechini method, combustion, co-precipitation, and chelating precursor method have been applied in producing perovskites. Therefore, this review assembles the current knowledge on the processes involved in the preparation of perovskites, their characterizations and potential applications in wastewater treatment. Challenges and future opportunities of perovskite-based materials are discussed as well as obstacles against their extensive uses. Conclusions have also been drawn proposing a few suggestions for future research.
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Affiliation(s)
- Zaharaddeen N Garba
- College of Materials Science and Engineering, Fujian Agriculture and Forestry University, China; Department of Chemistry, Ahmadu Bello University Zaria, Nigeria.
| | - Weiming Zhou
- College of Materials Science and Engineering, Fujian Agriculture and Forestry University, China
| | - Mingxi Zhang
- College of Materials Science and Engineering, Fujian Agriculture and Forestry University, China
| | - Zhanhui Yuan
- College of Materials Science and Engineering, Fujian Agriculture and Forestry University, China.
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Xu YB, Tang YL, Zhu YL, Liu Y, Li S, Zhang SR, Ma XL. Misfit Strain Relaxation of Ferroelectric PbTiO 3/LaAlO 3 (111) Thin Film System. Sci Rep 2016; 6:35172. [PMID: 27725752 PMCID: PMC5057106 DOI: 10.1038/srep35172] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2016] [Accepted: 09/20/2016] [Indexed: 11/09/2022] Open
Abstract
Ferroelectric thin films grown on high index substrates show unusual structural and switching dynamics due to their special strain states. Understanding the misfit relaxation behavior is crucial to facilitate the high index thin film growth with improved quality. In this paper, ferroelectric PbTiO3 thin films were grown on LaAlO3 (111) substrates by pulsed laser deposition technique. The microstructures were investigated by combinations of conventional and aberration-corrected transmission electron microscopy. Diffraction contrast analysis and high resolution imaging reveal that high density interfacial dislocations were distributed at the interfaces. These dislocations have mixed character with Burgers vectors of a <110> and line directions of <112>. The edge components of the dislocations, with the Burgers vectors parallel to the interface, accommodate the lattice mismatch and are the main contributor to the misfit relaxation of this system. The formation mechanism of these dislocations is proposed and discussed to elucidate the novel mismatch relaxation behavior of <111> oriented perovskite films.
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Affiliation(s)
- Y B Xu
- Shenyang National Laboratory for Materials Science, Institute of Metal Research, Chinese Academy of Sciences, 72 Wenhua Road, 110016 Shenyang, China
| | - Y L Tang
- Shenyang National Laboratory for Materials Science, Institute of Metal Research, Chinese Academy of Sciences, 72 Wenhua Road, 110016 Shenyang, China
| | - Y L Zhu
- Shenyang National Laboratory for Materials Science, Institute of Metal Research, Chinese Academy of Sciences, 72 Wenhua Road, 110016 Shenyang, China
| | - Y Liu
- Shenyang National Laboratory for Materials Science, Institute of Metal Research, Chinese Academy of Sciences, 72 Wenhua Road, 110016 Shenyang, China
| | - S Li
- Shenyang National Laboratory for Materials Science, Institute of Metal Research, Chinese Academy of Sciences, 72 Wenhua Road, 110016 Shenyang, China
| | - S R Zhang
- Shenyang National Laboratory for Materials Science, Institute of Metal Research, Chinese Academy of Sciences, 72 Wenhua Road, 110016 Shenyang, China
| | - X L Ma
- Shenyang National Laboratory for Materials Science, Institute of Metal Research, Chinese Academy of Sciences, 72 Wenhua Road, 110016 Shenyang, China
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Chance WM, Bugaris DE, Sefat AS, zur Loye HC. Crystal Growth of New Hexahydroxometallates Using a Hydroflux. Inorg Chem 2013; 52:11723-33. [DOI: 10.1021/ic400910g] [Citation(s) in RCA: 43] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- W. Michael Chance
- Department of Chemistry and Biochemistry, University of South Carolina, Columbia, South Carolina 29208, United States
| | - Daniel E. Bugaris
- Department of Chemistry and Biochemistry, University of South Carolina, Columbia, South Carolina 29208, United States
| | - Athena S. Sefat
- Materials
Science and Technology Division, Oak Ridge National Laboratory (ORNL), Oak
Ridge, Tennessee 37831, United States
| | - Hans-Conrad zur Loye
- Department of Chemistry and Biochemistry, University of South Carolina, Columbia, South Carolina 29208, United States
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Haron W, Thaweechai T, Wattanathana W, Laobuthee A, Manaspiya H, Veranitisagul C, Koonsaeng N. Structural Characteristics and Dielectric Properties of La1-xCoxFeO3 and LaFe1-xCoxO3 Synthesized via Metal Organic Complexes. ACTA ACUST UNITED AC 2013. [DOI: 10.1016/j.egypro.2013.06.815] [Citation(s) in RCA: 41] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Jin-Hua Y, Hong-Ying X, Xin-Quan X, An-Bang D, Yu-Chang Z. Studies on thermal stabilities of coordination compounds by gas chromatography: XX. The solid state reaction of sodium nitrate and iron (III) oxalate in hydrogen atmosphere. ACTA CHIMICA SINICA 2010. [DOI: 10.1002/cjoc.19880060204] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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Vasylechko L, Senyshyn A, Bismayer U. Chapter 242 Perovskite-Type Aluminates and Gallates. HANDBOOK ON THE PHYSICS AND CHEMISTRY OF RARE EARTHS 2009. [DOI: 10.1016/s0168-1273(08)00002-0] [Citation(s) in RCA: 52] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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Silva PRN, Soares AB. Lanthanum based high surface area perovskite-type oxide and application in CO and propane combustion. ECLÉTICA QUÍMICA 2009. [DOI: 10.1590/s0100-46702009000100005] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Affiliation(s)
| | - A. B. Soares
- Universidade Estadual do Norte Fluminense; Centro Federal de Educação Tecnológica do Espírito Santo
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Radha AV, Kamath PV, Ravishankar N, Shivakumara C. Suppression of the reversible thermal behavior of the layered double hydroxide (LDH) of Mg with Al: stabilization of nanoparticulate oxides. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2007; 23:7700-6. [PMID: 17559238 DOI: 10.1021/la063276e] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/15/2023]
Abstract
The layered double hydroxide of Mg with Al decomposes below 600 degrees C with the loss of nearly 48% mass, resulting in the formation of an oxide residue having the rock salt structure and nanoparticulate morphology. However, this product reconstructs back into the parent LDH, owing to its compositional and morphological metastability. The oxide can be kinetically stabilized within an amorphous phosphate network built up through an ex situ reaction with a suitable phosphate source such as (NH4)H2PO4. This oxide transforms into a thermodynamically more stable phase with a spinel structure on soaking in an aqueous medium. The oxide residue has a nanoparticulate morphology as revealed by the Scherrer broadening of the Bragg reflections as well as by electron microscopy. This work shows that the hydroxide reconstruction reaction and spinel formation are competing reactions. Suppression of the former catalyzes spinel formation as the excess free energy of the metastable oxide residue is unlocked to promote the diffusion of Mg2+ ions from octahedral to tetrahedral sites, which is the essential precondition to the formation of a normal spinel. This reaction taking place as it does at ambient temperature and in solution helps in the retention of a nanostructured morphology for the spinel. Another way of stabilizing the oxide is by incorporating the thermally stable borate anion into the LDH. This paves the way for an in situ reaction between the cations of the host LDH and the borate guest. The in situ reaction directly leads to the formation of an oxide with a spinel structure.
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Affiliation(s)
- A V Radha
- Department of Chemistry, Central College, Bangalore University, Bangalore 560 001, India
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Radha AV, Thomas GS, Kamath PV, Shivakumara C. Suppression of Spinel Formation to Induce Reversible Thermal Behavior in the Layered Double Hydroxides (LDHs) of Co with Al, Fe, Ga, and In. J Phys Chem B 2007; 111:3384-90. [PMID: 17388504 DOI: 10.1021/jp067562a] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
The layered double hydroxides (LDHs) of Co with trivalent cations decompose irreversibly to yield oxides with the spinel structure. Spinel formation is aided by the oxidation of Co(II) to Co(III) in the ambient atmosphere. When the decomposition is carried out under N2, the oxidation of Co(II) is suppressed, and the resulting oxide has the rock salt structure. Thus, the Co-Al-CO(3)(2-)/Cl- LDHs yield oxides of the type Co(1-x)Al(2x/3) square(x/3)O, which are highly metastable, given the large defect concentration. This defect oxide rapidly reverts back to the original hydroxide on soaking in a Na2CO3 solution. Interlayer NO(3)- anions, on the other hand, decompose generating a highly oxidizing atmosphere, whereby the Co-Al-NO(3)- LDH decomposes to form the spinel phase even in a N2 atmosphere. The oxide with the defect rock salt structure formed by the thermal decomposition of the Co-Fe-CO(3)(2-) LDH under N2, on soaking in a Na(2)CO(3) solution, follows a different kinetic pathway and undergoes a solution transformation into the inverse spinel Co(Co,Fe)(2)O(4). Fe3+ has a low octahedral crystal field stabilization energy and therefore prefers the tetrahedral coordination offered by the structure of the inverse spinel rather than the octahedral coordination of the parent LDH. Similar considerations do not hold in the case of Ga- and In-containing LDHs, given the considerable barriers to the diffusion of M3+ (M=Ga, In) from octahedral to tetrahedral sites owing to their large size. Consequently, the In-containing oxide residue reverts back to the parent hydroxide, whereas this reconstruction is partial in the case of the Ga-containing oxide. These studies show that the reversible thermal behavior offers a competing kinetic pathway to spinel formation. Suppression of the latter induces the reversible behavior in an LDH that otherwise decomposes irreversibly to the spinel.
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Affiliation(s)
- A V Radha
- Department of Chemistry, Central College, Bangalore University, Bangalore 560 001, India
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Abstract
207Pb NMR spectra of mixed crystals of anhydrous lead and strontium nitrate show up to 13 lines, arising from lead ions with 0-12 Pb(2+) nearest-neighbor cations replaced by Sr(2+). The shifted lines are further split by the multiplicity of inequivalent nearest-neighbor replacements. The average shift per Sr(2+) ion is 21.8 ppm. Similar but somewhat smaller effects are seen in [Pb,Ba](NO(3))(2) mixed crystals. The intensities of the resonances can be fit to Monte Carlo models of Pb(2+) and Sr(2+) ion distributions and are consistent with like nearest-neighbor pairs being 120 J/mol lower in energy than unlike pairs.
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Affiliation(s)
- Young-Sik Kye
- Department of Chemistry, University of Nebraska at Lincoln, Lincoln, Nebraska 68588-0304
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Singh RN, Tiwari SK, Singh SP, Singh NK, Poillerat G, Chartier P. Synthesis of (La, Sr)CoO3perovskite films via a sol–gel route and their physicochemical and electrochemical surface characterization for anode application in alkaline water electrolysis. ACTA ACUST UNITED AC 1996. [DOI: 10.1039/ft9969202593] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Marti P, Maciejewski M, Baiker A. La0.8Sr0.2MnO3+x supported on LaAlO3 and LaAl11O18 prepared by different methods: Influence of preparation method on morphological and catalytic properties in methane combustion. STUDIES IN SURFACE SCIENCE AND CATALYSIS 1995. [DOI: 10.1016/s0167-2991(06)81801-x] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
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Rojas R, Herrero M, Benetollo F, Bombieri G. An X-ray and thermogravimetric study of the lanthanum(III) uranyl propionate-acetate systems. ACTA ACUST UNITED AC 1990. [DOI: 10.1016/0022-5088(90)90463-t] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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