1
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Magnussen OM, Drnec J, Qiu C, Martens I, Huang JJ, Chattot R, Singer A. In Situ and Operando X-ray Scattering Methods in Electrochemistry and Electrocatalysis. Chem Rev 2024; 124:629-721. [PMID: 38253355 PMCID: PMC10870989 DOI: 10.1021/acs.chemrev.3c00331] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2023] [Revised: 10/02/2023] [Accepted: 11/13/2023] [Indexed: 01/24/2024]
Abstract
Electrochemical and electrocatalytic processes are of key importance for the transition to a sustainable energy supply as well as for a wide variety of other technologically relevant fields. Further development of these processes requires in-depth understanding of the atomic, nano, and micro scale structure of the materials and interfaces in electrochemical devices under reaction conditions. We here provide a comprehensive review of in situ and operando studies by X-ray scattering methods, which are powerful and highly versatile tools to provide such understanding. We discuss the application of X-ray scattering to a wide variety of electrochemical systems, ranging from metal and oxide single crystals to nanoparticles and even full devices. We show how structural data on bulk phases, electrode-electrolyte interfaces, and nanoscale morphology can be obtained and describe recent developments that provide highly local information and insight into the composition and electronic structure. These X-ray scattering studies yield insights into the structure in the double layer potential range as well as into the structural evolution during electrocatalytic processes and phase formation reactions, such as nucleation and growth during electrodeposition and dissolution, the formation of passive films, corrosion processes, and the electrochemical intercalation into battery materials.
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Affiliation(s)
- Olaf M. Magnussen
- Kiel
University, Institute of Experimental and
Applied Physics, 24098 Kiel, Germany
- Ruprecht-Haensel
Laboratory, Kiel University, 24118 Kiel, Germany
| | - Jakub Drnec
- ESRF,
Experiments Division, 38000 Grenoble, France
| | - Canrong Qiu
- Kiel
University, Institute of Experimental and
Applied Physics, 24098 Kiel, Germany
| | | | - Jason J. Huang
- Department
of Materials Science and Engineering, Cornell
University, Ithaca, New York 14853, United States
| | - Raphaël Chattot
- ICGM,
Univ. Montpellier, CNRS, ENSCM, 34095 Montpellier Cedex 5, France
| | - Andrej Singer
- Department
of Materials Science and Engineering, Cornell
University, Ithaca, New York 14853, United States
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2
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Coviello V, Badocco D, Pastore P, Fracchia M, Ghigna P, Martucci A, Forrer D, Amendola V. Accurate prediction of the optical properties of nanoalloys with both plasmonic and magnetic elements. Nat Commun 2024; 15:834. [PMID: 38280888 PMCID: PMC10821890 DOI: 10.1038/s41467-024-45137-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2023] [Accepted: 01/15/2024] [Indexed: 01/29/2024] Open
Abstract
The alloying process plays a pivotal role in the development of advanced multifunctional plasmonic materials within the realm of modern nanotechnology. However, accurate in silico predictions are only available for metal clusters of just a few nanometers, while the support of modelling is required to navigate the broad landscape of components, structures and stoichiometry of plasmonic nanoalloys regardless of their size. Here we report on the accurate calculation and conceptual understanding of the optical properties of metastable alloys of both plasmonic (Au) and magnetic (Co) elements obtained through a tailored laser synthesis procedure. The model is based on the density functional theory calculation of the dielectric function with the Hubbard-corrected local density approximation, the correction for intrinsic size effects and use of classical electrodynamics. This approach is built to manage critical aspects in modelling of real samples, as spin polarization effects due to magnetic elements, short-range order variability, and size heterogeneity. The method provides accurate results also for other magnetic-plasmonic (Au-Fe) and typical plasmonic (Au-Ag) nanoalloys, thus being available for the investigation of several other nanomaterials waiting for assessment and exploitation in fundamental sectors such as quantum optics, magneto-optics, magneto-plasmonics, metamaterials, chiral catalysis and plasmon-enhanced catalysis.
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Affiliation(s)
- Vito Coviello
- Department of Chemical Sciences, Università di Padova, via Marzolo 1, 35131, Padova, Italy
| | - Denis Badocco
- Department of Chemical Sciences, Università di Padova, via Marzolo 1, 35131, Padova, Italy
| | - Paolo Pastore
- Department of Chemical Sciences, Università di Padova, via Marzolo 1, 35131, Padova, Italy
| | - Martina Fracchia
- University of Pavia, Department of Chemistry, viale Taramelli 16, 27100, Pavia, Italy
- INSTM, National Inter-University Consortium for Materials Science and Technology, Via G. Giusti 9, 50121, Florence, Italy
| | - Paolo Ghigna
- University of Pavia, Department of Chemistry, viale Taramelli 16, 27100, Pavia, Italy
- INSTM, National Inter-University Consortium for Materials Science and Technology, Via G. Giusti 9, 50121, Florence, Italy
| | - Alessandro Martucci
- INSTM, National Inter-University Consortium for Materials Science and Technology, Via G. Giusti 9, 50121, Florence, Italy
- Department of Industrial Engineering, University of Padova, Via Marzolo 9, 35131, Padova, Italy
| | - Daniel Forrer
- Department of Chemical Sciences, Università di Padova, via Marzolo 1, 35131, Padova, Italy.
- CNR - ICMATE, via Marzolo 1, 35131, Padova, Italy.
| | - Vincenzo Amendola
- Department of Chemical Sciences, Università di Padova, via Marzolo 1, 35131, Padova, Italy.
- INSTM, National Inter-University Consortium for Materials Science and Technology, Via G. Giusti 9, 50121, Florence, Italy.
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3
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Belenov S, Nevelskaya A, Nikulin A, Tolstunov M. The Effect of Pretreatment on a PtCu/C Catalyst's Structure and Functional Characteristics. Int J Mol Sci 2023; 24:ijms24032177. [PMID: 36768501 PMCID: PMC9916518 DOI: 10.3390/ijms24032177] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2022] [Revised: 01/18/2023] [Accepted: 01/20/2023] [Indexed: 01/25/2023] Open
Abstract
This research focuses on studying the effects of various pretreatment types on a PtCu/C catalyst synthesized by the co-deposition of metal precursors. The treatment in a 1 M HNO3 solution for 1 h is shown to result in a slight increase in activity in the oxygen electroreduction reaction (both the mass activity and specific activity calculated for the value of the electrochemically active surface area). The sample obtained after the thermal treatment, which is carried out at 350 °C under an argon atmosphere for 1 h, demonstrates 1.7 times higher specific activity than the sample before the treatment. The durability testing results obtained by the stress testing method in a potential range of 0.6-1.4 V during 2000 cycles show that the PtCu/C catalysts after both the acid treatment and the thermal treatment are characterized by higher residual activity than the sample in the "as-prepared" state.
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Affiliation(s)
- Sergey Belenov
- Chemistry Faculty, Southern Federal University, 7 Zorge St, 344090 Rostov-on-Don, Russia
- Prometheus R&D LLC, 4g/36 Zhmaylova St, 344091 Rostov-on-Don, Russia
- Correspondence:
| | - Alina Nevelskaya
- Chemistry Faculty, Southern Federal University, 7 Zorge St, 344090 Rostov-on-Don, Russia
| | - Alexey Nikulin
- Chemistry Faculty, Southern Federal University, 7 Zorge St, 344090 Rostov-on-Don, Russia
- Federal State Budgetary Institution of Science “Federal Research Centre The Southern Scientific Centre of the Russian Academy of Sciences” (SSC RAS), St. Chehova, 41, 344006 Rostov-on-Don, Russia
| | - Mikhail Tolstunov
- Chemistry Faculty, Southern Federal University, 7 Zorge St, 344090 Rostov-on-Don, Russia
- Federal State Budgetary Institution of Science “Federal Research Centre The Southern Scientific Centre of the Russian Academy of Sciences” (SSC RAS), St. Chehova, 41, 344006 Rostov-on-Don, Russia
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4
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Graphene-like materials as an alternative to carbon Vulcan support for the electrochemical reforming of ethanol: Towards a complete optimization of the anodic catalyst. J Electroanal Chem (Lausanne) 2022. [DOI: 10.1016/j.jelechem.2022.116680] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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5
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Kareem H, Maswadeh Y, Wu ZP, Leff AC, Cheng HW, Shan S, Wang S, Robinson R, Caracciolo D, Langrock A, Mackie DM, Tran DT, Petkov V, Zhong CJ. Lattice Strain and Surface Activity of Ternary Nanoalloys under the Propane Oxidation Condition. ACS APPLIED MATERIALS & INTERFACES 2022; 14:11435-11447. [PMID: 35195398 DOI: 10.1021/acsami.1c24007] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
The ability to harness the catalytic oxidation of hydrocarbons is critical for both clean energy production and air pollutant elimination, which requires a detailed understanding of the dynamic role of the nanophase structure and surface reactivity under the reaction conditions. We report here findings of an in situ/operando study of such details of a ternary nanoalloy under the propane oxidation condition using high-energy synchrotron X-ray diffraction coupled to atomic pair distribution function (HE-XRD/PDF) analysis and diffuse reflectance infrared Fourier transform spectroscopy (DRIFTS). The catalysts are derived by alloying Pt with different combinations of second (Pd) and third (Ni) transition metals, showing a strong dependence of the catalytic activity on the Ni content. The evolution of the phase structure of the nanoalloy is characterized by HE-XRD/PDF probing of the lattice strain, whereas the surface activity is monitored by DRIFTS detection of the surface intermediate formation during the oxidation of propane by oxygen. The results reveal the dominance of the surface intermediate species featuring a lower degree of oxygenation upon the first C-C bond cleavage on the lower-Ni-content nanoalloy and a higher degree of oxygenation upon the second C-C bond cleavage on the higher-Ni-content nanoalloy. The face-centered-cubic-type phase structures of the nanoalloys under the oxidation condition are shown to exhibit Ni-content-dependent changes of lattice strains, featuring the strongest strain with little variation for the higher-Ni-content nanoalloy, in contrast to the weaker strains with oscillatory variation for the lower-Ni-content nanoalloys. This process is also accompanied by oxygenation of the metal components in the nanoalloy, showing a higher degree of oxygenation for the higher-Ni-content nanoalloy. These subtle differences in phase structure and surface activity changes correlate with the Ni-composition-dependent catalytic activity of the nanoalloys, which sheds a fresh light on the correlation between the dynamic change of atomic strains and the surface reactivity and has significant implications for the design of oxidation catalysts with enhanced activities.
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Affiliation(s)
- Haval Kareem
- Sensors and Electron Devices Directorate, CCDC Army Research Laboratory, Adelphi, Maryland 20783, United States
- Department of Chemistry, State University of New York at Binghamton, Binghamton, New York 13902, United States
| | - Yazan Maswadeh
- Department of Physics, Central Michigan University, Mt. Pleasant, Michigan 48859, United States
| | - Zhi-Peng Wu
- Department of Chemistry, State University of New York at Binghamton, Binghamton, New York 13902, United States
| | - Asher C Leff
- Sensors and Electron Devices Directorate, CCDC Army Research Laboratory, Adelphi, Maryland 20783, United States
| | - Han-Wen Cheng
- Laboratory of Advanced Materials, Department of Materials Science and Collaborative Innovation Center, Fudan University, Shanghai 200438, China
| | - Shiyao Shan
- Department of Chemistry, State University of New York at Binghamton, Binghamton, New York 13902, United States
| | - Shan Wang
- Department of Chemistry, State University of New York at Binghamton, Binghamton, New York 13902, United States
| | - Richard Robinson
- Department of Chemistry, State University of New York at Binghamton, Binghamton, New York 13902, United States
| | - Dominic Caracciolo
- Department of Chemistry, State University of New York at Binghamton, Binghamton, New York 13902, United States
| | - Alex Langrock
- Sensors and Electron Devices Directorate, CCDC Army Research Laboratory, Adelphi, Maryland 20783, United States
| | - David M Mackie
- Sensors and Electron Devices Directorate, CCDC Army Research Laboratory, Adelphi, Maryland 20783, United States
| | - Dat T Tran
- Sensors and Electron Devices Directorate, CCDC Army Research Laboratory, Adelphi, Maryland 20783, United States
| | - Valeri Petkov
- Department of Physics, Central Michigan University, Mt. Pleasant, Michigan 48859, United States
| | - Chuan-Jian Zhong
- Department of Chemistry, State University of New York at Binghamton, Binghamton, New York 13902, United States
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6
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Chang F, Liu Y, Zhang Q, Jia Z, Wang X, Yang L, Bai Z. Regulating the lattice strain of platinum–copper catalysts for enhancing collaborative electrocatalysis. Inorg Chem Front 2022. [DOI: 10.1039/d1qi01348c] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
PtnCu100−n alloy nanostellates showed the high catalytic activity for both the oxygen reduction and alcohol oxidation reactions.
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Affiliation(s)
- Fangfang Chang
- Collaborative Innovation Center of Henan Province for Green Manufacturing of Fine Chemicals, Key Laboratory of Green Chemical Media and Reactions, Ministry of Education, School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang, Henan 453007, China
| | - Yongpeng Liu
- Collaborative Innovation Center of Henan Province for Green Manufacturing of Fine Chemicals, Key Laboratory of Green Chemical Media and Reactions, Ministry of Education, School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang, Henan 453007, China
| | - Qing Zhang
- Collaborative Innovation Center of Henan Province for Green Manufacturing of Fine Chemicals, Key Laboratory of Green Chemical Media and Reactions, Ministry of Education, School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang, Henan 453007, China
| | - Zhichao Jia
- Collaborative Innovation Center of Henan Province for Green Manufacturing of Fine Chemicals, Key Laboratory of Green Chemical Media and Reactions, Ministry of Education, School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang, Henan 453007, China
| | - Xiaolei Wang
- Department of Chemical and Materials Engineering, University of Alberta, Edmonton, Alberta T6G 1H9, Canada
| | - Lin Yang
- Collaborative Innovation Center of Henan Province for Green Manufacturing of Fine Chemicals, Key Laboratory of Green Chemical Media and Reactions, Ministry of Education, School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang, Henan 453007, China
| | - Zhengyu Bai
- Collaborative Innovation Center of Henan Province for Green Manufacturing of Fine Chemicals, Key Laboratory of Green Chemical Media and Reactions, Ministry of Education, School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang, Henan 453007, China
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7
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Kato M, Iguchi Y, Li T, Kato Y, Zhuang Y, Higashi K, Uruga T, Saida T, Miyabayashi K, Yagi I. Structural Transformation of Pt–Ni Nanowires as Oxygen Reduction Electrocatalysts to Branched Nanostructures during Potential Cycles. ACS Catal 2021. [DOI: 10.1021/acscatal.1c04597] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Masaru Kato
- Faculty of Environmental Earth Science, Hokkaido University, N10W5, Kita-ku, Sapporo 060-0810, Japan
- Graduate School of Environmental Science, Hokkaido University, N10W5, Kita-ku, Sapporo 060-0810, Japan
| | - Yoshimi Iguchi
- Graduate School of Environmental Science, Hokkaido University, N10W5, Kita-ku, Sapporo 060-0810, Japan
| | - Tianchi Li
- Graduate School of Environmental Science, Hokkaido University, N10W5, Kita-ku, Sapporo 060-0810, Japan
| | - Yuta Kato
- Graduate School of Environmental Science, Hokkaido University, N10W5, Kita-ku, Sapporo 060-0810, Japan
| | - Yu Zhuang
- Graduate School of Environmental Science, Hokkaido University, N10W5, Kita-ku, Sapporo 060-0810, Japan
| | - Kotaro Higashi
- Innovation Research Center for Fuel Cells, The University of Electro-Communications, Chofugaoka,
Chofu, Tokyo 182-8585, Japan
| | - Tomoya Uruga
- Innovation Research Center for Fuel Cells, The University of Electro-Communications, Chofugaoka,
Chofu, Tokyo 182-8585, Japan
- Japan Synchrotron Radiation Research Institute, SPring-8, Sayo, Hyogo 679-5198, Japan
| | - Takahiro Saida
- Department of Applied Chemistry, Meijo University, Nagoya 468-8502, Japan
| | - Keiko Miyabayashi
- Graduate School of Integrated Science and Technology, Shizuoka University, 3-5-1, Naka-ku, Hamamatsu 432-8561, Japan
| | - Ichizo Yagi
- Faculty of Environmental Earth Science, Hokkaido University, N10W5, Kita-ku, Sapporo 060-0810, Japan
- Graduate School of Environmental Science, Hokkaido University, N10W5, Kita-ku, Sapporo 060-0810, Japan
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8
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Xiao F, Wang YC, Wu ZP, Chen G, Yang F, Zhu S, Siddharth K, Kong Z, Lu A, Li JC, Zhong CJ, Zhou ZY, Shao M. Recent Advances in Electrocatalysts for Proton Exchange Membrane Fuel Cells and Alkaline Membrane Fuel Cells. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2021; 33:e2006292. [PMID: 33749011 DOI: 10.1002/adma.202006292] [Citation(s) in RCA: 126] [Impact Index Per Article: 42.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/14/2020] [Revised: 12/10/2020] [Indexed: 05/18/2023]
Abstract
The rapid progress of proton exchange membrane fuel cells (PEMFCs) and alkaline exchange membrane fuel cells (AMFCs) has boosted the hydrogen economy concept via diverse energy applications in the past decades. For a holistic understanding of the development status of PEMFCs and AMFCs, recent advancements in electrocatalyst design and catalyst layer optimization, along with cell performance in terms of activity and durability in PEMFCs and AMFCs, are summarized here. The activity, stability, and fuel cell performance of different types of electrocatalysts for both oxygen reduction reaction and hydrogen oxidation reaction are discussed and compared. Research directions on the further development of active, stable, and low-cost electrocatalysts to meet the ultimate commercialization of PEMFCs and AMFCs are also discussed.
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Affiliation(s)
- Fei Xiao
- Department of Chemical and Biological Engineering, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong, China
| | - Yu-Cheng Wang
- State Key Laboratory of Physical Chemistry of Solid Surfaces, Innovation Center of Chemistry for Energy Materials, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, 361005, China
| | - Zhi-Peng Wu
- Department of Chemistry, State University of New York at Binghamton, Binghamton, NY, 13902, USA
| | - Guangyu Chen
- Department of Chemical and Biological Engineering, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong, China
- Fok Ying Tung Research Institute, The Hong Kong University of Science and Technology, Guangzhou, 511458, China
| | - Fei Yang
- Department of Chemical and Biological Engineering, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong, China
| | - Shangqian Zhu
- Department of Chemical and Biological Engineering, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong, China
| | - Kumar Siddharth
- Department of Chemical and Biological Engineering, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong, China
| | - Zhijie Kong
- Department of Chemistry, State University of New York at Binghamton, Binghamton, NY, 13902, USA
| | - Aolin Lu
- Department of Chemistry, State University of New York at Binghamton, Binghamton, NY, 13902, USA
| | - Jin-Cheng Li
- Fok Ying Tung Research Institute, The Hong Kong University of Science and Technology, Guangzhou, 511458, China
| | - Chuan-Jian Zhong
- Department of Chemistry, State University of New York at Binghamton, Binghamton, NY, 13902, USA
| | - Zhi-You Zhou
- State Key Laboratory of Physical Chemistry of Solid Surfaces, Innovation Center of Chemistry for Energy Materials, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, 361005, China
| | - Minhua Shao
- Department of Chemical and Biological Engineering, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong, China
- Fok Ying Tung Research Institute, The Hong Kong University of Science and Technology, Guangzhou, 511458, China
- Energy Institute, and Chinese National Engineering Research Center for Control and Treatment of Heavy Metal Pollution, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong, China
- HKUST-Shenzhen Research Institute, No. 9 Yuexing 1st RD, South Area, Hi-tech Park, Nanshan, Shenzhen, 518057, China
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9
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Chamorro-Coral W, Caillard A, Brault P, Baranton S, Coutanceau C. Binary and ternary Pt-based clusters grown in a plasma multimagnetron-based gas aggregation source: electrocatalytic evaluation towards glycerol oxidation. NANOSCALE ADVANCES 2021; 3:1730-1740. [PMID: 36132561 PMCID: PMC9418899 DOI: 10.1039/d0na01009j] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/01/2020] [Accepted: 01/19/2021] [Indexed: 06/15/2023]
Abstract
Platinum (Pt), platinum-bismuth (PtBi), platinum-copper (PtCu) and platinum-bismuth-copper (PtCuBi) clusters were grown in a gas aggregation source (GAS) equipped with three in-plane plasma magnetrons located in a single region of the gas aggregation zone. The X-ray diffraction results have shown that PtCu clusters form alloys as the decrease of the lattice parameter occurs when the Cu atomic content increases. PtBi clusters do not form alloys, but the presence of secondary Bi oxide phases was detected. Scanning transmission electron microscope mapping images revealed that simultaneously adding Bi and Cu to Pt leads to PtCu alloyed clusters decorated with Bi or CuBi species on the surface. The electrochemical results indicated that the shell might be composed of a metastable CuBi phase. Electrochemical measurements have shown that the addition of Bi or Cu to the Pt clusters enhances the catalytic activity for glycerol oxidation by decreasing the oxidation onset potential.
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Affiliation(s)
- W Chamorro-Coral
- Groupe de Recherches sur l'Energétique des Milieux Ionisés (GREMI), Université d'Orléans, CNRS 14 rue d'Issoudun BP6744 45067 Orléans cedex 2 France
| | - A Caillard
- Groupe de Recherches sur l'Energétique des Milieux Ionisés (GREMI), Université d'Orléans, CNRS 14 rue d'Issoudun BP6744 45067 Orléans cedex 2 France
| | - P Brault
- Groupe de Recherches sur l'Energétique des Milieux Ionisés (GREMI), Université d'Orléans, CNRS 14 rue d'Issoudun BP6744 45067 Orléans cedex 2 France
| | - S Baranton
- Institut de Chimie des Milieux et Matériaux de Poitiers (IC2MP), Université de Poitiers, CNRS 4 rue Michel Brunet TSA 51106 86073 Poitiers cedex 9 France
| | - C Coutanceau
- Institut de Chimie des Milieux et Matériaux de Poitiers (IC2MP), Université de Poitiers, CNRS 4 rue Michel Brunet TSA 51106 86073 Poitiers cedex 9 France
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10
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Alloying-realloying enabled high durability for Pt-Pd-3d-transition metal nanoparticle fuel cell catalysts. Nat Commun 2021; 12:859. [PMID: 33558516 PMCID: PMC7870895 DOI: 10.1038/s41467-021-21017-6] [Citation(s) in RCA: 70] [Impact Index Per Article: 23.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2020] [Accepted: 01/08/2021] [Indexed: 11/08/2022] Open
Abstract
Alloying noble metals with non-noble metals enables high activity while reducing the cost of electrocatalysts in fuel cells. However, under fuel cell operating conditions, state-of-the-art oxygen reduction reaction alloy catalysts either feature high atomic percentages of noble metals (>70%) with limited durability or show poor durability when lower percentages of noble metals (<50%) are used. Here, we demonstrate a highly-durable alloy catalyst derived by alloying PtPd (<50%) with 3d-transition metals (Cu, Ni or Co) in ternary compositions. The origin of the high durability is probed by in-situ/operando high-energy synchrotron X-ray diffraction coupled with pair distribution function analysis of atomic phase structures and strains, revealing an important role of realloying in the compressively-strained single-phase alloy state despite the occurrence of dealloying. The implication of the finding, a striking departure from previous perceptions of phase-segregated noble metal skin or complete dealloying of non-noble metals, is the fulfilling of the promise of alloy catalysts for mass commercialization of fuel cells.
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11
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Wu ZP, Shan S, Zang SQ, Zhong CJ. Dynamic Core-Shell and Alloy Structures of Multimetallic Nanomaterials and Their Catalytic Synergies. Acc Chem Res 2020; 53:2913-2924. [PMID: 33170638 DOI: 10.1021/acs.accounts.0c00564] [Citation(s) in RCA: 43] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Abstract
ConspectusMultimetallic nanomaterials containing noble metals (NM) and non-noble 3d-transition metals (3d-TMs) exhibit unique catalytic properties as a result of the synergistic combination of NMs and 3d-TMs in the nanostructure. The exploration of such a synergy depends heavily on the understanding of the atomic-scale structural details of NMs and 3d-TMs in the nanomaterials. This has attracted a great deal of recent interest in the field of catalysis science, especially concerning the core-shell and alloy nanostructures. A rarely asked question of fundamental significance is how the core-shell and alloy structural arrangements of atoms in the multimetallic nanomaterials dynamically change under reaction conditions, including reaction temperature, surface adsorbate, chemical environment, applied electrochemical potential, etc. The dynamic evolution of the core-shell/alloy structures under the reaction conditions plays a crucial role in the catalytic performance of the multimetallic nanocatalysts.This Account focuses on the dynamic structure characteristics for several different types of composition-tunable alloy and core-shell nanomaterials, including phase-segregated, elemental-enriched, dynamically evolved, and structurally different core-shell structures. In addition to outlining core-shell/alloy structure formation via processes such as seed-mediated growth, thermochemical calcination, adsorbate-induced evolution, chemical dealloying, underpotential deposition/galvanic displacement, etc., this Account will highlight the progress in understanding the dynamic core-shell/alloy structures under chemical or catalytic reaction conditions, which has become an important focal point of the research fronts in catalysis and electrocatalysis. The employment of advanced techniques, especially in situ/operando synchrotron high-energy X-ray diffraction and pair distribution function analyses, has provided significant insights into the dynamic evolution processes of NM/3d-TM nanocatalysts under electrocatalytic or fuel cell operating conditions. Examples will highlight Pt- or Pd-based nanoparticles and nanowires alloyed with various 3d-TMs with a focus on their structural evolution under reaction conditions. While the dynamic process is complex, the ability to gain an insight into the evolution of core-shell and alloy structures under the catalytic reaction condition is essential for advancing the design of multimetallic nanocatalysts. This Account serves as a springboard from fundamental understanding of the core-shell and alloy structural dynamics to the various applications of nanostructured catalysts/electrocatalysts, especially in the fronts of energy and environmental sustainability.
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Affiliation(s)
- Zhi-Peng Wu
- Department of Chemistry, State University of New York at Binghamton, Binghamton, New York 13902, United States
- Green Catalysis Center, College of Chemistry, Zhengzhou University, Zhengzhou 450001, P. R. China
| | - Shiyao Shan
- Department of Chemistry, State University of New York at Binghamton, Binghamton, New York 13902, United States
| | - Shuang-Quan Zang
- Green Catalysis Center, College of Chemistry, Zhengzhou University, Zhengzhou 450001, P. R. China
| | - Chuan-Jian Zhong
- Department of Chemistry, State University of New York at Binghamton, Binghamton, New York 13902, United States
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12
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Yilmaz M, Handoko AD, Parkin IP, Sankar G. Probing the electronic and geometric structures of photoactive electrodeposited Cu2O films by X-ray absorption spectroscopy. J Catal 2020. [DOI: 10.1016/j.jcat.2020.06.021] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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Surface oxygenation of multicomponent nanoparticles toward active and stable oxidation catalysts. Nat Commun 2020; 11:4201. [PMID: 32826920 PMCID: PMC7443134 DOI: 10.1038/s41467-020-18017-3] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2020] [Accepted: 07/15/2020] [Indexed: 11/08/2022] Open
Abstract
The need for active and stable oxidation catalysts is driven by the demands in production of valuable chemicals, remediation of hydrocarbon pollutants and energy sustainability. Traditional approaches focus on oxygen-activating oxides as support which provides the oxygen activation at the catalyst-support peripheral interface. Here we report a new approach to oxidation catalysts for total oxidation of hydrocarbons (e.g., propane) by surface oxygenation of platinum (Pt)-alloyed multicomponent nanoparticles (e.g., platinum-nickel cobalt (Pt-NiCo)). The in-situ/operando time-resolved studies, including high-energy synchrotron X-ray diffraction and diffuse reflectance infrared Fourier transform spectroscopy, demonstrate the formation of oxygenated Pt-NiOCoO surface layer and disordered ternary alloy core. The results reveal largely-irregular oscillatory kinetics associated with the dynamic lattice expansion/shrinking, ordering/disordering, and formation of surface-oxygenated sites and intermediates. The catalytic synergy is responsible for reduction of the oxidation temperature by ~100 °C and the high stability under 800 °C hydrothermal aging in comparison with Pt, and may represent a paradigm shift in the design of self-supported catalysts.
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Kong Z, Maswadeh Y, Vargas JA, Shan S, Wu ZP, Kareem H, Leff AC, Tran DT, Chang F, Yan S, Nam S, Zhao X, Lee JM, Luo J, Shastri S, Yu G, Petkov V, Zhong CJ. Origin of High Activity and Durability of Twisty Nanowire Alloy Catalysts under Oxygen Reduction and Fuel Cell Operating Conditions. J Am Chem Soc 2020; 142:1287-1299. [PMID: 31885267 DOI: 10.1021/jacs.9b10239] [Citation(s) in RCA: 45] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
The ability to control the surface composition and morphology of alloy catalysts is critical for achieving high activity and durability of catalysts for oxygen reduction reaction (ORR) and fuel cells. This report describes an efficient surfactant-free synthesis route for producing a twisty nanowire (TNW) shaped platinum-iron (PtFe) alloy catalyst (denoted as PtFe TNWs) with controllable bimetallic compositions. PtFe TNWs with an optimal initial composition of ∼24% Pt are shown to exhibit the highest mass activity (3.4 A/mgPt, ∼20 times higher than that of commercial Pt catalyst) and the highest durability (<2% loss of activity after 40 000 cycles and <30% loss after 120 000 cycles) among all PtFe-based nanocatalysts under ORR or fuel cell operating conditions reported so far. Using ex situ and in situ synchrotron X-ray diffraction coupled with atomic pair distribution function (PDF) analysis and 3D modeling, the PtFe TNWs are shown to exhibit mixed face-centered cubic (fcc)-body-centered cubic (bcc) alloy structure and a significant lattice strain. A striking finding is that the activity strongly depends on the composition of the as-synthesized catalysts and this dependence remains unchanged despite the evolution of the composition of the different catalysts and their lattice constants under ORR or fuel cell operating conditions. Notably, dealloying under fuel cell operating condition starts at phase-segregated domain sites leading to a final fcc alloy structure with subtle differences in surface morphology. Due to a subsequent realloying and the morphology of TNWs, the surface lattice strain observed with the as-synthesized catalysts is largely preserved. This strain and the particular facets exhibited by the TNWs are believed to be responsible for the observed activity and durability enhancements. These findings provide new insights into the correlation between the structure, activity, and durability of nanoalloy catalysts and are expected to energize the ongoing effort to develop highly active and durable low-Pt-content nanowire catalysts by controlling their alloy structure and morphology.
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Affiliation(s)
- Zhijie Kong
- College of Chemistry and Chemical Engineering , Hunan University , Changsha 410082 , China.,Department of Chemistry , State University of New York at Binghamton , Binghamton , New York 13902 , United States
| | - Yazan Maswadeh
- Department of Physics , Central Michigan University , Mt. Pleasant , Michigan 48859 , United States
| | - Jorge A Vargas
- Department of Physics , Central Michigan University , Mt. Pleasant , Michigan 48859 , United States
| | - Shiyao Shan
- Department of Chemistry , State University of New York at Binghamton , Binghamton , New York 13902 , United States
| | - Zhi-Peng Wu
- Department of Chemistry , State University of New York at Binghamton , Binghamton , New York 13902 , United States
| | - Haval Kareem
- CCDC Army Research Laboratory , FCDD-RLS-DE , Adelphi , Maryland 20783 , United States
| | - Asher C Leff
- CCDC Army Research Laboratory , FCDD-RLS-DE , Adelphi , Maryland 20783 , United States
| | - Dat T Tran
- CCDC Army Research Laboratory , FCDD-RLS-DE , Adelphi , Maryland 20783 , United States
| | - Fangfang Chang
- Department of Chemistry , State University of New York at Binghamton , Binghamton , New York 13902 , United States
| | - Shan Yan
- Department of Chemistry , State University of New York at Binghamton , Binghamton , New York 13902 , United States
| | - Sanghyun Nam
- Department of Chemistry , State University of New York at Binghamton , Binghamton , New York 13902 , United States
| | - Xingfang Zhao
- Department of Chemistry , State University of New York at Binghamton , Binghamton , New York 13902 , United States
| | - Jason M Lee
- Department of Chemistry , State University of New York at Binghamton , Binghamton , New York 13902 , United States
| | - Jin Luo
- Department of Chemistry , State University of New York at Binghamton , Binghamton , New York 13902 , United States
| | - Sarvjit Shastri
- X-ray Science Division, Advanced Photon Source , Argonne National Laboratory , Argonne , Illinois 60439 , United States
| | - Gang Yu
- College of Chemistry and Chemical Engineering , Hunan University , Changsha 410082 , China
| | - Valeri Petkov
- Department of Physics , Central Michigan University , Mt. Pleasant , Michigan 48859 , United States
| | - Chuan-Jian Zhong
- Department of Chemistry , State University of New York at Binghamton , Binghamton , New York 13902 , United States
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