1
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Iwai H, Nishino F, Yamamoto T, Kudo M, Tsushida M, Yoshida H, Machida M, Ohyama J. Atomic-Scale 3D Structure of a Supported Pd Nanoparticle Revealed by Electron Tomography with Convolution Neural Network-Based Image Inpainting. SMALL METHODS 2024; 8:e2301163. [PMID: 38044263 DOI: 10.1002/smtd.202301163] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/30/2023] [Revised: 11/07/2023] [Indexed: 12/05/2023]
Abstract
Electron tomography based on scanning transmission electron microscopy (STEM) is used to analyze 3D structures of metal nanoparticles on the atomic scale. However, in the case of supported metal nanoparticle catalysts, the supporting material may interfere with the 3D reconstruction of metal nanoparticles. In this study, a deep learning-based image inpainting method is applied to high-angle annular dark field (HAADF)-STEM images of a supported metal nanoparticle to predict and remove the background image of the support. The inpainting method can separate an 11 nm Pd nanoparticle from the θ-Al2O3 support in HAADF-STEM images of the θ-Al2O3-supported Pd catalyst. 3D reconstruction of the extracted images of the Pd nanoparticle reveals that the Pd nanoparticle adopts a deformed structure of the cuboctahedron model particle, resulting in high index surfaces, which account for the high catalytic activity for methane combustion. Using the xyz coordinate of each Pd atom, the local Pd-Pd bond distance and its variance in a real supported Pd nanoparticle are visualized, showing large strain and disorder at the Pd-Al2O3 interface. The results demonstrate that 3D atomic-scale analysis enables atomic structure-based understanding and design of supported metal catalysts.
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Affiliation(s)
- Hiroki Iwai
- Graduate School of Science and Technology, Kumamoto University, Kumamoto, 860-8555, Japan
| | - Fumiya Nishino
- Graduate School of Science and Technology, Kumamoto University, Kumamoto, 860-8555, Japan
| | - Tomokazu Yamamoto
- The Ultramicroscopy Research Center, Kyushu University, Fukuoka, 819-0395, Japan
| | - Masaki Kudo
- The Ultramicroscopy Research Center, Kyushu University, Fukuoka, 819-0395, Japan
| | | | - Hiroshi Yoshida
- Institute of Science and Engineering, Kanazawa University, Kanazawa, 920-1192, Japan
| | - Masato Machida
- Faculty of Advanced Science and Technology, Kumamoto University, Kumamoto, 860-8555, Japan
| | - Junya Ohyama
- Faculty of Advanced Science and Technology, Kumamoto University, Kumamoto, 860-8555, Japan
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2
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Silva C, Salmanzade K, Borbáth I, Dódony E, Olasz D, Sáfrán G, Kuncser A, Pászti-Gere E, Tompos A, Pászti Z. Reductive Treatment of Pt Supported on Ti 0.8Sn 0.2O 2-C Composite: A Route for Modulating the Sn-Pt Interactions. NANOMATERIALS (BASEL, SWITZERLAND) 2023; 13:2245. [PMID: 37570561 PMCID: PMC10473237 DOI: 10.3390/nano13152245] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/10/2023] [Revised: 07/26/2023] [Accepted: 08/01/2023] [Indexed: 08/13/2023]
Abstract
The composites of transition metal-doped titania and carbon have emerged as promising supports for Pt electrocatalysts in PEM fuel cells. In these multifunctional supports, the oxide component stabilizes the Pt particles, while the dopant provides a co-catalytic function. Among other elements, Sn is a valuable additive. Stong metal-support interaction (SMSI), i.e., the migration of a partially reduced oxide species from the support to the surface of Pt during reductive treatment is a general feature of TiO2-supported Pt catalysts. In order to explore the influence of SMSI on the stability and performance of Pt/Ti0.8Sn0.2O2-C catalysts, the structural and catalytic properties of the as prepared samples measured using XRD, TEM, XPS and electrochemical investigations were compared to those obtained from catalysts reduced in hydrogen at elevated temperatures. According to the observations, the uniform oxide coverage of the carbon backbone facilitated the formation of Pt-oxide-C triple junctions at a high density. The electrocatalytic behavior of the as prepared catalysts was determined by the atomic closeness of Sn to Pt, while even a low temperature reductive treatment resulted in Sn-Pt alloying. The segregation of tin oxide on the surface of the alloy particles, a characteristic material transport process in Sn-Pt alloys after oxygen exposure, contributed to a better stability of the reduced catalysts.
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Affiliation(s)
- Cristina Silva
- Institute of Materials and Environmental Chemistry, Research Centre for Natural Sciences, Magyar Tudósok Körútja 2, H-1117 Budapest, Hungary; (C.S.); (K.S.); (I.B.); (A.T.)
- Department of Physical Chemistry and Materials Science, Faculty of Chemical Technology and Biotechnology, Budapest University of Technology and Economics, Műegyetem rkp. 3., H-1111 Budapest, Hungary
| | - Khirdakhanim Salmanzade
- Institute of Materials and Environmental Chemistry, Research Centre for Natural Sciences, Magyar Tudósok Körútja 2, H-1117 Budapest, Hungary; (C.S.); (K.S.); (I.B.); (A.T.)
| | - Irina Borbáth
- Institute of Materials and Environmental Chemistry, Research Centre for Natural Sciences, Magyar Tudósok Körútja 2, H-1117 Budapest, Hungary; (C.S.); (K.S.); (I.B.); (A.T.)
| | - Erzsébet Dódony
- Institute for Technical Physics and Materials Science, Centre for Energy Research, Konkoly-Thege Miklós út 29-33, H-1121 Budapest, Hungary; (E.D.); (D.O.); (G.S.)
| | - Dániel Olasz
- Institute for Technical Physics and Materials Science, Centre for Energy Research, Konkoly-Thege Miklós út 29-33, H-1121 Budapest, Hungary; (E.D.); (D.O.); (G.S.)
| | - György Sáfrán
- Institute for Technical Physics and Materials Science, Centre for Energy Research, Konkoly-Thege Miklós út 29-33, H-1121 Budapest, Hungary; (E.D.); (D.O.); (G.S.)
| | - Andrei Kuncser
- National Institute of Materials Physics, 405A Atomistilor Street, 077125 Magurele, Romania;
| | - Erzsébet Pászti-Gere
- Department of Pharmacology and Toxicology, University of Veterinary Medicine, István utca 2, H-1078 Budapest, Hungary;
| | - András Tompos
- Institute of Materials and Environmental Chemistry, Research Centre for Natural Sciences, Magyar Tudósok Körútja 2, H-1117 Budapest, Hungary; (C.S.); (K.S.); (I.B.); (A.T.)
| | - Zoltán Pászti
- Institute of Materials and Environmental Chemistry, Research Centre for Natural Sciences, Magyar Tudósok Körútja 2, H-1117 Budapest, Hungary; (C.S.); (K.S.); (I.B.); (A.T.)
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3
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Sieben JM, Alvarez AE, Sanchez MD. Glycerol electrooxidation on carbon-supported Pt-CuO and PtCu-CuO catalysts. Electrochim Acta 2022. [DOI: 10.1016/j.electacta.2022.141672] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/07/2022]
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4
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Chattot R, Martens I, Mirolo M, Ronovsky M, Russello F, Isern H, Braesch G, Hornberger E, Strasser P, Sibert E, Chatenet M, Honkimäki V, Drnec J. Electrochemical Strain Dynamics in Noble Metal Nanocatalysts. J Am Chem Soc 2021; 143:17068-17078. [PMID: 34623136 DOI: 10.1021/jacs.1c06780] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Abstract
The theoretical design of effective metal electrocatalysts for energy conversion and storage devices relies greatly on supposed unilateral effects of catalysts structure on electrocatalyzed reactions. Here, by using high-energy X-ray diffraction from the new Extremely Brilliant Source of the European Synchrotron Radiation Facility (ESRF-EBS) on device-relevant Pd and Pt nanocatalysts during cyclic voltammetry experiments in liquid electrolytes, we reveal the near ubiquitous feedback from various electrochemical processes on nanocatalyst strain. Beyond challenging and extending the current understanding of practical nanocatalysts behavior in electrochemical environment, the reported electrochemical strain provides experimental access to nanocatalysts absorption and adsorption trends (i.e., reactivity and stability descriptors) operando. The ease and power in monitoring such key catalyst properties at new and future beamlines is foreseen to provide a discovery platform toward the study of nanocatalysts encompassing a large variety of applications, from model environments to the device level.
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Affiliation(s)
- Raphaël Chattot
- European Synchrotron Radiation Facility, ID 31 Beamline, BP 220, 38043 Grenoble, France
| | - Isaac Martens
- European Synchrotron Radiation Facility, ID 31 Beamline, BP 220, 38043 Grenoble, France
| | - Marta Mirolo
- European Synchrotron Radiation Facility, ID 31 Beamline, BP 220, 38043 Grenoble, France
| | - Michal Ronovsky
- European Synchrotron Radiation Facility, ID 31 Beamline, BP 220, 38043 Grenoble, France
| | - Florian Russello
- European Synchrotron Radiation Facility, ID 31 Beamline, BP 220, 38043 Grenoble, France
| | - Helena Isern
- European Synchrotron Radiation Facility, ID 31 Beamline, BP 220, 38043 Grenoble, France
| | - Guillaume Braesch
- Univ. Grenoble Alpes, Univ. Savoie Mont Blanc, CNRS, Grenoble INP, LEPMI, 38000 Grenoble, France
| | - Elisabeth Hornberger
- Electrochemical Energy, Catalysis and Material Science Laboratory, Department of Chemistry, Technische Universität Berlin, 10623 Berlin, Germany
| | - Peter Strasser
- Electrochemical Energy, Catalysis and Material Science Laboratory, Department of Chemistry, Technische Universität Berlin, 10623 Berlin, Germany
| | - Eric Sibert
- Univ. Grenoble Alpes, Univ. Savoie Mont Blanc, CNRS, Grenoble INP, LEPMI, 38000 Grenoble, France
| | - Marian Chatenet
- Univ. Grenoble Alpes, Univ. Savoie Mont Blanc, CNRS, Grenoble INP, LEPMI, 38000 Grenoble, France
| | - Veijo Honkimäki
- European Synchrotron Radiation Facility, ID 31 Beamline, BP 220, 38043 Grenoble, France
| | - Jakub Drnec
- European Synchrotron Radiation Facility, ID 31 Beamline, BP 220, 38043 Grenoble, France
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5
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Enhanced oxygen reduction activity with rare earth metal alloy catalysts in proton exchange membrane fuel cells. Electrochim Acta 2021. [DOI: 10.1016/j.electacta.2021.138454] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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6
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Padilla Espinosa IM, Jacobs TDB, Martini A. Evaluation of Force Fields for Molecular Dynamics Simulations of Platinum in Bulk and Nanoparticle Forms. J Chem Theory Comput 2021; 17:4486-4498. [PMID: 34061519 DOI: 10.1021/acs.jctc.1c00434] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Understanding the size- and shape-dependent properties of platinum nanoparticles is critical for enabling the design of nanoparticle-based applications with optimal and potentially tunable functionality. Toward this goal, we evaluated nine different empirical potentials with the purpose of accurately modeling faceted platinum nanoparticles using molecular dynamics simulation. First, the potentials were evaluated by computing bulk and surface properties-surface energy, lattice constant, stiffness constants, and the equation of state-and comparing these to prior experimental measurements and quantum mechanics calculations. Then, the potentials were assessed in terms of the stability of cubic and icosahedral nanoparticles with faces in the {100} and {111} planes, respectively. Although none of the force fields predicts all the evaluated properties with perfect accuracy, one potential-the embedded atom method formalism with a specific parameter set-was identified as best able to model platinum in both bulk and nanoparticle forms.
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Affiliation(s)
- Ingrid M Padilla Espinosa
- Department of Mechanical Engineering, University of California, Merced, Merced, California 95340, United States
| | - Tevis D B Jacobs
- Department of Mechanical Engineering and Materials Science, University of Pittsburgh, Pittsburgh, Pennsylvania 15261, United States
| | - Ashlie Martini
- Department of Mechanical Engineering, University of California, Merced, Merced, California 95340, United States
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7
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Bok J, Lee SY, Lee BH, Kim C, Nguyen DLT, Kim JW, Jung E, Lee CW, Jung Y, Lee HS, Kim J, Lee K, Ko W, Kim YS, Cho SP, Yoo JS, Hyeon T, Hwang YJ. Designing Atomically Dispersed Au on Tensile-Strained Pd for Efficient CO 2 Electroreduction to Formate. J Am Chem Soc 2021; 143:5386-5395. [PMID: 33725440 DOI: 10.1021/jacs.0c12696] [Citation(s) in RCA: 35] [Impact Index Per Article: 11.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Abstract
Pd is one of the most effective catalysts for the electrochemical reduction of CO2 to formate, a valuable liquid product, at low overpotential. However, the intrinsically high CO affinity of Pd makes the surface vulnerable to CO poisoning, resulting in rapid catalyst deactivation during CO2 electroreduction. Herein, we utilize the interaction between metals and metal-organic frameworks to synthesize atomically dispersed Au on tensile-strained Pd nanoparticles showing significantly improved formate production activity, selectivity, and stability with high CO tolerance. We found that the tensile strain stabilizes all reaction intermediates on the Pd surface, whereas the atomically dispersed Au selectively destabilizes CO* without affecting other adsorbates. As a result, the conventional COOH* versus CO* scaling relation is broken, and our catalyst exhibits 26- and 31-fold enhancement in partial current density and mass activity toward electrocatalytic formate production with over 99% faradaic efficiency, compared to Pd/C at -0.25 V versus RHE.
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Affiliation(s)
- Jinsol Bok
- Center for Nanoparticle Research, Institute for Basic Science (IBS), Seoul 08826, Republic of Korea.,School of Chemical and Biological Engineering, and Institute of Chemical Processes, Seoul National University, Seoul 08826, Republic of Korea
| | - Si Young Lee
- Clean Energy Research Center, Korea Institute of Science and Technology, Seoul 02792, Republic of Korea.,Division of Energy and Environmental Technology, KIST School, Korea University of Science and Technology, Seoul 02792, Republic of Korea
| | - Byoung-Hoon Lee
- Center for Nanoparticle Research, Institute for Basic Science (IBS), Seoul 08826, Republic of Korea.,School of Chemical and Biological Engineering, and Institute of Chemical Processes, Seoul National University, Seoul 08826, Republic of Korea
| | - Cheonghee Kim
- Department of Chemical Engineering, University of Seoul, Seoul 02504, Republic of Korea
| | - Dang Le Tri Nguyen
- Clean Energy Research Center, Korea Institute of Science and Technology, Seoul 02792, Republic of Korea
| | - Ji Won Kim
- Clean Energy Research Center, Korea Institute of Science and Technology, Seoul 02792, Republic of Korea.,Department of Chemical and Biomolecular Engineering, Yonsei-KIST Convergence Research Institute, Yonsei University, Seoul 03722, Republic of Korea
| | - Euiyeon Jung
- Center for Nanoparticle Research, Institute for Basic Science (IBS), Seoul 08826, Republic of Korea.,School of Chemical and Biological Engineering, and Institute of Chemical Processes, Seoul National University, Seoul 08826, Republic of Korea
| | - Chan Woo Lee
- Center for Nanoparticle Research, Institute for Basic Science (IBS), Seoul 08826, Republic of Korea.,School of Chemical and Biological Engineering, and Institute of Chemical Processes, Seoul National University, Seoul 08826, Republic of Korea
| | - Yoon Jung
- Center for Nanoparticle Research, Institute for Basic Science (IBS), Seoul 08826, Republic of Korea.,School of Chemical and Biological Engineering, and Institute of Chemical Processes, Seoul National University, Seoul 08826, Republic of Korea
| | - Hyeon Seok Lee
- Center for Nanoparticle Research, Institute for Basic Science (IBS), Seoul 08826, Republic of Korea.,School of Chemical and Biological Engineering, and Institute of Chemical Processes, Seoul National University, Seoul 08826, Republic of Korea
| | - Jiheon Kim
- Center for Nanoparticle Research, Institute for Basic Science (IBS), Seoul 08826, Republic of Korea.,School of Chemical and Biological Engineering, and Institute of Chemical Processes, Seoul National University, Seoul 08826, Republic of Korea
| | - Kangjae Lee
- Center for Nanoparticle Research, Institute for Basic Science (IBS), Seoul 08826, Republic of Korea.,School of Chemical and Biological Engineering, and Institute of Chemical Processes, Seoul National University, Seoul 08826, Republic of Korea
| | - Wonjae Ko
- Center for Nanoparticle Research, Institute for Basic Science (IBS), Seoul 08826, Republic of Korea.,School of Chemical and Biological Engineering, and Institute of Chemical Processes, Seoul National University, Seoul 08826, Republic of Korea
| | - Young Seong Kim
- Center for Nanoparticle Research, Institute for Basic Science (IBS), Seoul 08826, Republic of Korea
| | - Sung-Pyo Cho
- National Center for Inter-University Research Facilities, Seoul National University, Seoul 08826, Republic of Korea
| | - Jong Suk Yoo
- Department of Chemical Engineering, University of Seoul, Seoul 02504, Republic of Korea
| | - Taeghwan Hyeon
- Center for Nanoparticle Research, Institute for Basic Science (IBS), Seoul 08826, Republic of Korea.,School of Chemical and Biological Engineering, and Institute of Chemical Processes, Seoul National University, Seoul 08826, Republic of Korea
| | - Yun Jeong Hwang
- Center for Nanoparticle Research, Institute for Basic Science (IBS), Seoul 08826, Republic of Korea.,Department of Chemistry, Seoul National University, Seoul 08826, Republic of Korea
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8
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Siburian R, Ali AMM, Sebayang K, Supeno M, Tarigan K, Simanjuntak C, Aritonang SP, Hutagalung F. The loading effect of Pt clusters on Pt/graphene nano sheets catalysts. Sci Rep 2021; 11:2532. [PMID: 33510232 PMCID: PMC7844224 DOI: 10.1038/s41598-020-80472-1] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2020] [Accepted: 12/09/2020] [Indexed: 12/03/2022] Open
Abstract
In this paper, we report about chemically interaction between Pt Subnano-Clusters on Graphene Nano Sheets (GNS). The aim of this research is to clarify the size effect of Pt clusters on Pt 1–7 wt.%/GNS. This research is an experimental laboratory research. GNS was synthesized by using modified Hummer’s method and 1–7 wt.% Pt/GNS were prepared with impregnation method. Then, they were analyzed with TG/DTA, XRD, TEM and XPS, respectively. The results show that Pt clusters are well deposited on GNS (TG/DTA and TEM data). Those data also are consistent with XRD data. The weak and broad peaks appear at 2θ = 39°, indicating Pt metal exists on GNS. The state of Pt is confirmed by using XPS. The appearance of Pt 4f. peaks proves that Pt metal is chemical interaction on GNS. The size of Pt clusters may affect the chemically properties of Pt/GNS catalysts.
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Affiliation(s)
- Rikson Siburian
- Department of Chemistry, Faculty of Mathematics and Natural Sciences, Universitas Sumatera Utara, Padang Bulan, Medan, 20155, Indonesia. .,Carbon Research Center, Universitas Sumatera Utara, Padang Bulan, Medan, 20155, Indonesia.
| | - Ab Malik Marwan Ali
- Faculty of Applied Sciences, Universiti Teknologi MARA, 40450, Shah Alam, Selangor, Malaysia.
| | - Kerista Sebayang
- Carbon Research Center, Universitas Sumatera Utara, Padang Bulan, Medan, 20155, Indonesia.,Faculty of Applied Sciences, Universiti Teknologi MARA, 40450, Shah Alam, Selangor, Malaysia
| | - Minto Supeno
- Department of Chemistry, Faculty of Mathematics and Natural Sciences, Universitas Sumatera Utara, Padang Bulan, Medan, 20155, Indonesia.,Carbon Research Center, Universitas Sumatera Utara, Padang Bulan, Medan, 20155, Indonesia
| | - Kerista Tarigan
- Carbon Research Center, Universitas Sumatera Utara, Padang Bulan, Medan, 20155, Indonesia.,Department of Physics, Faculty of Mathematics and Natural Sciences, Universitas Sumatera Utara, Medan, 20155, Indonesia
| | - Crystina Simanjuntak
- Department of Chemistry, Faculty of Mathematics and Natural Sciences, Universitas Sumatera Utara, Padang Bulan, Medan, 20155, Indonesia
| | - Sri Pratiwi Aritonang
- Department of Chemistry, Faculty of Mathematics and Natural Sciences, Universitas Sumatera Utara, Padang Bulan, Medan, 20155, Indonesia
| | - Fajar Hutagalung
- Department of Chemistry, Faculty of Mathematics and Natural Sciences, Universitas Sumatera Utara, Padang Bulan, Medan, 20155, Indonesia
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9
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Sarkar S, Ramarao SD, Das T, Das R, Vinod CP, Chakraborty S, Peter SC. Unveiling the Roles of Lattice Strain and Descriptor Species on Pt-Like Oxygen Reduction Activity in Pd–Bi Catalysts. ACS Catal 2021. [DOI: 10.1021/acscatal.0c03415] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Shreya Sarkar
- New Chemistry Unit, Jawaharlal Nehru Centre for Advanced Scientific Research, Jakkur, Bangalore, Karnataka 560064, India
- School of Advanced Materials, Jawaharlal Nehru Centre for Advanced Scientific Research, Jakkur, Bangalore, Karnataka 560064, India
| | - S. D. Ramarao
- New Chemistry Unit, Jawaharlal Nehru Centre for Advanced Scientific Research, Jakkur, Bangalore, Karnataka 560064, India
- School of Advanced Materials, Jawaharlal Nehru Centre for Advanced Scientific Research, Jakkur, Bangalore, Karnataka 560064, India
| | - Tisita Das
- Harish-Chandra Research Institute, HBNI, Allahabad, Uttar Pradesh 211019, India
| | - Risov Das
- New Chemistry Unit, Jawaharlal Nehru Centre for Advanced Scientific Research, Jakkur, Bangalore, Karnataka 560064, India
- School of Advanced Materials, Jawaharlal Nehru Centre for Advanced Scientific Research, Jakkur, Bangalore, Karnataka 560064, India
| | - C. P. Vinod
- Catalysis and Inorganic Chemistry Division, CSIR-National Chemical Laboratory, Dr. Homi Bhabha Road, Pune 411008, India
| | - Sudip Chakraborty
- Department of Physics, Indian Institute of Technology, Simrol, Indore 453552, India
| | - Sebastian C. Peter
- New Chemistry Unit, Jawaharlal Nehru Centre for Advanced Scientific Research, Jakkur, Bangalore, Karnataka 560064, India
- School of Advanced Materials, Jawaharlal Nehru Centre for Advanced Scientific Research, Jakkur, Bangalore, Karnataka 560064, India
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10
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Guan J, Zan Y, Shao R, Niu J, Dou M, Zhu B, Zhang Z, Wang F. Phase Segregated Pt-SnO 2 /C Nanohybrids for Highly Efficient Oxygen Reduction Electrocatalysis. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2020; 16:e2005048. [PMID: 33314718 DOI: 10.1002/smll.202005048] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/17/2020] [Revised: 10/29/2020] [Indexed: 06/12/2023]
Abstract
Strengthening the interfacial interaction in heterogeneous catalysts can lead to a dramatic improvement in their performance and allow the use of smaller amounts of active noble metal, thus decreasing the cost without compromising their activity. In this work, a facile phase-segregation method is demonstrated for synthesizing platinum-tin oxide hybrids supported on carbon black (PtSnO2 /C) in situ by air annealing PtSn alloy nanoparticles on carbon black. Compared with a control sample formed by preloading SnO2 on carbon support followed by deposition of Pt nanoparticles, the phase-segregation-derived PtSnO2 /C exhibits a more strongly coupled PtSnO2 interface with lattice overlap of Pt (111) and SnO2 (200), along with enhanced electron transfer from SnO2 to Pt. Furthermore, the PtSnO2 active sites show a strong ability to degrade reactive oxygen species. As a result, the PtSnO2 /C nanohybrids exhibit both excellent activity and stability as a catalyst for the oxygen reduction reaction, with an overall performance which is superior to both the control sample and commercial Pt/C catalyst. This phase-segregation method can be expected to be applicable in the preparation of other strongly coupled nanohybrids and offers a new route to high-performance heterogeneous catalysts for low-cost energy conversion devices.
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Affiliation(s)
- Jingyu Guan
- State Key Laboratory of Chemical Resource Engineering, Beijing Key Laboratory of Electrochemical Process and Technology for Materials, Beijing Advanced Innovation Center for Soft Matter Science and Engineering, Beijing University of Chemical Technology, Beijing, 100029, P. R. China
| | - Yongxi Zan
- State Key Laboratory of Chemical Resource Engineering, Beijing Key Laboratory of Electrochemical Process and Technology for Materials, Beijing Advanced Innovation Center for Soft Matter Science and Engineering, Beijing University of Chemical Technology, Beijing, 100029, P. R. China
| | - Rong Shao
- State Key Laboratory of Chemical Resource Engineering, Beijing Key Laboratory of Electrochemical Process and Technology for Materials, Beijing Advanced Innovation Center for Soft Matter Science and Engineering, Beijing University of Chemical Technology, Beijing, 100029, P. R. China
| | - Jin Niu
- State Key Laboratory of Chemical Resource Engineering, Beijing Key Laboratory of Electrochemical Process and Technology for Materials, Beijing Advanced Innovation Center for Soft Matter Science and Engineering, Beijing University of Chemical Technology, Beijing, 100029, P. R. China
| | - Meiling Dou
- State Key Laboratory of Chemical Resource Engineering, Beijing Key Laboratory of Electrochemical Process and Technology for Materials, Beijing Advanced Innovation Center for Soft Matter Science and Engineering, Beijing University of Chemical Technology, Beijing, 100029, P. R. China
| | - Baoning Zhu
- Beijing Engineering Center for Environmental Pollution Control and Resource Utilization, College of Chemical Engineering, Beijing University of Chemical Technology, Beijing, 100029, P. R. China
| | - Zhengping Zhang
- State Key Laboratory of Chemical Resource Engineering, Beijing Key Laboratory of Electrochemical Process and Technology for Materials, Beijing Advanced Innovation Center for Soft Matter Science and Engineering, Beijing University of Chemical Technology, Beijing, 100029, P. R. China
| | - Feng Wang
- State Key Laboratory of Chemical Resource Engineering, Beijing Key Laboratory of Electrochemical Process and Technology for Materials, Beijing Advanced Innovation Center for Soft Matter Science and Engineering, Beijing University of Chemical Technology, Beijing, 100029, P. R. China
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11
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AlAqad KM, Kandiel TA, Basheer C. TiO
2
Nanotubes Supported PtO
x
Nanoclusters with Enhanced Mass Activity for Electrocatalytic Hydrogen Evolution. ChemCatChem 2020. [DOI: 10.1002/cctc.202000828] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Khaled M. AlAqad
- Department of Chemistry King Fahd University of Petroleum & Minerals (KFUPM) Dhahran 31261 Saudi Arabia
| | - Tarek A. Kandiel
- Department of Chemistry King Fahd University of Petroleum & Minerals (KFUPM) Dhahran 31261 Saudi Arabia
- K.A.CARE Energy Research & Innovation Center (ERIC) at KFUPM Dhahran 31261 Saudi Arabia
| | - Chanbasha Basheer
- Department of Chemistry King Fahd University of Petroleum & Minerals (KFUPM) Dhahran 31261 Saudi Arabia
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12
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Ambolikar AS, Guin SK. Template‐free Electrosynthesis of Platinum Nano‐Cauliflowers for Catalysing Electron Transfer Reaction of Plutonium. ELECTROANAL 2020. [DOI: 10.1002/elan.202060058] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Arvind S. Ambolikar
- Fuel Chemistry Division Bhabha Atomic Research Centre, Trombay Mumbai 400085 India
- Homi Bhabha National Institute, Anushakti Nagar Mumbai 400094 India
| | - Saurav K. Guin
- Fuel Chemistry Division Bhabha Atomic Research Centre, Trombay Mumbai 400085 India
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13
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Jiménez-Morales I, Haidar F, Cavaliere S, Jones D, Rozière J. Strong Interaction between Platinum Nanoparticles and Tantalum-Doped Tin Oxide Nanofibers and Its Activation and Stabilization Effects for Oxygen Reduction Reaction. ACS Catal 2020. [DOI: 10.1021/acscatal.0c02220] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
| | - Fatima Haidar
- ICGM Université de Montpellier, CNRS, ENSCM, 34095 Montpellier, Cedex 5, France
| | - Sara Cavaliere
- ICGM Université de Montpellier, CNRS, ENSCM, 34095 Montpellier, Cedex 5, France
- Institut Universitaire de France (IUF), 75231 Paris, Cedex 5, France
| | - Deborah Jones
- ICGM Université de Montpellier, CNRS, ENSCM, 34095 Montpellier, Cedex 5, France
| | - Jacques Rozière
- ICGM Université de Montpellier, CNRS, ENSCM, 34095 Montpellier, Cedex 5, France
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14
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Chattot R, Bordet P, Martens I, Drnec J, Dubau L, Maillard F. Building Practical Descriptors for Defect Engineering of Electrocatalytic Materials. ACS Catal 2020. [DOI: 10.1021/acscatal.0c02144] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Affiliation(s)
- Raphaël Chattot
- Univ. Grenoble Alpes, Univ. Savoie Mont Blanc, CNRS, Grenoble INP, LEPMI, 38000 Grenoble, France
- European Synchrotron Radiation Facility, ID 31 Beamline, BP 220, F-38043 Grenoble, France
| | - Pierre Bordet
- Univ. Grenoble Alpes, CNRS, Institut Néel, F-38000 Grenoble, France
| | - Isaac Martens
- European Synchrotron Radiation Facility, ID 31 Beamline, BP 220, F-38043 Grenoble, France
| | - Jakub Drnec
- European Synchrotron Radiation Facility, ID 31 Beamline, BP 220, F-38043 Grenoble, France
| | - Laetitia Dubau
- Univ. Grenoble Alpes, Univ. Savoie Mont Blanc, CNRS, Grenoble INP, LEPMI, 38000 Grenoble, France
| | - Frédéric Maillard
- Univ. Grenoble Alpes, Univ. Savoie Mont Blanc, CNRS, Grenoble INP, LEPMI, 38000 Grenoble, France
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15
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Mukherjee D, Gamler JTL, Skrabalak SE, Unocic RR. Lattice Strain Measurement of Core@Shell Electrocatalysts with 4D Scanning Transmission Electron Microscopy Nanobeam Electron Diffraction. ACS Catal 2020. [DOI: 10.1021/acscatal.0c00224] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Debangshu Mukherjee
- Center for Nanophase Materials Sciences, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, United States
| | - Jocelyn T. L. Gamler
- Department of Chemistry, Indiana University—Bloomington, Bloomington, Indiana 47405, United States
| | - Sara E. Skrabalak
- Department of Chemistry, Indiana University—Bloomington, Bloomington, Indiana 47405, United States
| | - Raymond R. Unocic
- Center for Nanophase Materials Sciences, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, United States
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16
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Miyazawa K, Nagai T, Kimoto K, Yoshitake M, Tanaka Y. HRTEM‐EELS cross‐sectional structural analyses of glassy carbon substrate irradiated by platinum ions using a coaxial arc plasma gun. SURF INTERFACE ANAL 2019. [DOI: 10.1002/sia.6716] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Kun'ichi Miyazawa
- Department of Industrial Chemistry, Faculty of EngineeringTokyo University of Science Tokyo Japan
| | - Takuro Nagai
- National Institute for Materials Science Tsukuba Japan
| | - Koji Kimoto
- National Institute for Materials Science Tsukuba Japan
| | - Masaru Yoshitake
- Department of Industrial Chemistry, Faculty of EngineeringTokyo University of Science Tokyo Japan
| | - Yumi Tanaka
- Department of Industrial Chemistry, Faculty of EngineeringTokyo University of Science Tokyo Japan
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17
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The effect of SnO2(110) supports on the geometrical and electronic properties of platinum nanoparticles. SN APPLIED SCIENCES 2019. [DOI: 10.1007/s42452-019-1478-0] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022] Open
Abstract
Abstract
While Pt-nanoparticles supported on SnO2 exhibit improved durability, a substantial detriment is observed on the Pt-nanoparticles’ activity toward the oxygen reduction reaction. A density functional theory method is used to calculate isolated, SnO2- and graphene-supported Pt-nanoparticles. Work function difference between the Pt-nanoparticles and SnO2 leads to electron donation from the nanoparticles to the support, making the outer-shell atoms of the supported nanoparticles more positively charged compared to unsupported nanoparticles. From an electrostatic point of view, nucleophilic species tend to interact more stably with less negatively charged Pt atoms blocking the active sites for the reaction to occur, which can explain the low activity of Pt-nanoparticles supported on SnO2. Introducing oxygen vacancies and Nb dopants on SnO2 decreases the support work function, which not only reduces the charge transferred from the Pt-nanoparticles to the support but also reverses the direction of the electrons flow making the surface Pt atoms more negatively charged. A similar effect is observed when using graphene, which has a lower work function than Pt. Thus, the blocking of the active sites by nucleophilic species decreases, hence increasing the activity. These results provide a clue to improve the activity by modifying the support work function and by selecting a support material with an appropriate work function to control the charge of the nanoparticle’s surface atoms.
Graphic abstract
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18
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Gerber IC, Serp P. A Theory/Experience Description of Support Effects in Carbon-Supported Catalysts. Chem Rev 2019; 120:1250-1349. [DOI: 10.1021/acs.chemrev.9b00209] [Citation(s) in RCA: 274] [Impact Index Per Article: 54.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Affiliation(s)
- Iann C. Gerber
- LPCNO, Université de Toulouse, CNRS, INSA, UPS, 135 avenue de Rangueil, F-31077 Toulouse, France
| | - Philippe Serp
- LCC-CNRS, Université de Toulouse, UPR 8241 CNRS, INPT, 31400 Toulouse, France
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Brandiele R, Zerbetto M, Dalconi MC, Rizzi GA, Isse AA, Durante C, Gennaro A. Mesoporous Carbon with Different Density of Thiophenic-Like Functional Groups and Their Effect on Oxygen Reduction. CHEMSUSCHEM 2019; 12:4229-4239. [PMID: 31309717 DOI: 10.1002/cssc.201901568] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/11/2019] [Revised: 07/15/2019] [Indexed: 06/10/2023]
Abstract
The metal-support interactions between sulfur-doped carbon supports (SMCs) and Pt nanoparticles (NPs) were investigated, aiming at verifying how sulfur functional groups can improve the electrocatalytic performance of Pt NPs towards the oxygen reduction reaction (ORR). SMCs were synthetized, tailoring the density of sulfur functional groups, and Pt NPs were deposited by thermal reduction of Pt(acac)2 . The extent of the metal-support interaction was proved by X-ray photoelectron spectroscopy (XPS) analysis, which revealed a strong electronic interaction, proportional to the density of sulfur defects, whereas XRD spectra provided evidence of higher strain in Pt NPs loaded on SMC. DFT simulations confirmed that the metal-support interaction was strongest in the presence of a high density of sulfur defects. The combination of microstrain and electronic effects resulted in a high catalytic activity of supported Pt NPs towards ORR, with linear correlations of the half-wave potential E1/2 or the kinetic current jk with the sulfur content in the support. Furthermore, a mass activity value (550 A g-1 ) well above the United States Department of Energy target of 440 A g-1 at 0.9 V (vs. reversible hydrogen electrode, RHE), was determined.
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Affiliation(s)
- Riccardo Brandiele
- Department of Chemical Sciences, University of Padova, via Marzolo 1, 35131, Padova, Italy
| | - Mirco Zerbetto
- Department of Chemical Sciences, University of Padova, via Marzolo 1, 35131, Padova, Italy
| | - Maria Chiara Dalconi
- Department of Geoscience, University of Padova, via Gradenigo 6, 35131, Padova, Italy
| | - Gian Andrea Rizzi
- Department of Chemical Sciences, University of Padova, via Marzolo 1, 35131, Padova, Italy
| | - Abdirisak Ahmed Isse
- Department of Chemical Sciences, University of Padova, via Marzolo 1, 35131, Padova, Italy
| | - Christian Durante
- Department of Chemical Sciences, University of Padova, via Marzolo 1, 35131, Padova, Italy
| | - Armando Gennaro
- Department of Chemical Sciences, University of Padova, via Marzolo 1, 35131, Padova, Italy
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20
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Cheng J, Yang J, Kitano S, Juhasz G, Higashi M, Sadakiyo M, Kato K, Yoshioka S, Sugiyama T, Yamauchi M, Nakashima N. Impact of Ir-Valence Control and Surface Nanostructure on Oxygen Evolution Reaction over a Highly Efficient Ir–TiO2 Nanorod Catalyst. ACS Catal 2019. [DOI: 10.1021/acscatal.9b01438] [Citation(s) in RCA: 68] [Impact Index Per Article: 13.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Affiliation(s)
- Junfang Cheng
- International Institute for Carbon-Neutral Energy Research (WPI-I2CNER), Kyushu University, 744 Moto-oka, Nishi-ku, Fukuoka, 819-0395, Japan
| | - Jun Yang
- Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, Ningbo 315201, China
| | - Sho Kitano
- International Institute for Carbon-Neutral Energy Research (WPI-I2CNER), Kyushu University, 744 Moto-oka, Nishi-ku, Fukuoka, 819-0395, Japan
| | - Gergely Juhasz
- Department of Chemistry, Graduate School of Science and Technology, Tokyo Institute of Technology, 2-12-1 Ookayama, Meguro-ku, Tokyo 152-8551, Japan
| | - Manabu Higashi
- International Institute for Carbon-Neutral Energy Research (WPI-I2CNER), Kyushu University, 744 Moto-oka, Nishi-ku, Fukuoka, 819-0395, Japan
| | - Masaaki Sadakiyo
- International Institute for Carbon-Neutral Energy Research (WPI-I2CNER), Kyushu University, 744 Moto-oka, Nishi-ku, Fukuoka, 819-0395, Japan
- Department of Chemistry, Faculty of Science, Kyushu University, 744 Motooka, Nishi-ku, Fukuoka 819-0395, Japan
| | - Kenichi Kato
- RIKEN SPring-8 Center, 1-1-1 Kouto, Sayo-cho, Sayo-gun, Hyogo 679-5148, Japan
| | - Satoru Yoshioka
- Department of Applied Quantum Physics and Nuclear Engineering, Graduate School of Engineering, Kyushu University, Motooka 744, Nishi-ku, Fukuoka 819-0395, Japan
| | - Takeharu Sugiyama
- Research Center for Synchrotron Light Applications, Kyushu University, 6-1 Kasuga-koen, Kasuga, Fukuoka 816-8580, Japan
| | - Miho Yamauchi
- International Institute for Carbon-Neutral Energy Research (WPI-I2CNER), Kyushu University, 744 Moto-oka, Nishi-ku, Fukuoka, 819-0395, Japan
- Department of Chemistry, Faculty of Science, Kyushu University, 744 Motooka, Nishi-ku, Fukuoka 819-0395, Japan
| | - Naotoshi Nakashima
- International Institute for Carbon-Neutral Energy Research (WPI-I2CNER), Kyushu University, 744 Moto-oka, Nishi-ku, Fukuoka, 819-0395, Japan
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21
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Liu SS, Saha LC, Iskandarov A, Ishimoto T, Yamamoto T, Umeno Y, Matsumura S, Koyama M. Atomic structure observations and reaction dynamics simulations on triple phase boundaries in solid-oxide fuel cells. Commun Chem 2019. [DOI: 10.1038/s42004-019-0148-x] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022] Open
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22
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23
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Fernández S, Gao L, Hofmann JP, Carnis J, Labat S, Chahine GA, van Hoof AJF, Verhoeven MWGMT, Schülli TU, Hensen EJM, Thomas O, Richard MI. In situ structural evolution of single particle model catalysts under ambient pressure reaction conditions. NANOSCALE 2018; 11:331-338. [PMID: 30534681 DOI: 10.1039/c8nr08414a] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
Abstract
The catalytic activity of metal nanoparticles can be altered by applying strain, which changes the crystalline lattice spacing and modifies the electronic properties of the metal. Understanding the role of elastic strain during catalytic reactions is thus crucial for catalyst design. Here, we show how single highly faceted Pt nanoparticles expand or contract upon interaction with different gas atmospheres using in situ nano-focused coherent X-ray diffraction imaging. We also demonstrate inter-particle heterogeneities, as they differ in development of strain under CO oxidation reaction conditions. The reported observations offer new insights into the design of catalysts exploiting strain effects.
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Affiliation(s)
- Sara Fernández
- Aix Marseille Université, CNRS, Université de Toulon, IM2NP UMR 7334, 13397, Marseille, France.
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24
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Influence of atomic site-specific strain on catalytic activity of supported nanoparticles. Nat Commun 2018; 9:2722. [PMID: 30006550 PMCID: PMC6045581 DOI: 10.1038/s41467-018-05055-1] [Citation(s) in RCA: 63] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2018] [Accepted: 06/11/2018] [Indexed: 11/23/2022] Open
Abstract
Heterogeneous catalysis is an enabling technology that utilises transition metal nanoparticles (NPs) supported on oxides to promote chemical reactions. Structural mismatch at the NP–support interface generates lattice strain that could affect catalytic properties. However, detailed knowledge about strain in supported NPs remains elusive. We experimentally measure the strain at interfaces, surfaces and defects in Pt NPs supported on alumina and ceria with atomic resolution using high-precision scanning transmission electron microscopy. The largest strains are observed at the interfaces and are predominantly compressive. Atomic models of Pt NPs with experimentally measured strain distributions are used for first-principles kinetic Monte Carlo simulations of the CO oxidation reaction. The presence of only a fraction of strained surface atoms is found to affect the turnover frequency. These results provide a quantitative understanding of the relationship between strain and catalytic function and demonstrate that strain engineering can potentially be used for catalyst design. Detailed knowledge of how strain influences catalytic reactions remains elusive. Here, the authors experimentally measure the strain in supported Pt nanoparticles on alumina and ceria with atomic resolution and computationally explore how the strain affects the CO oxidation reaction.
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25
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Nakibli Y, Mazal Y, Dubi Y, Wächtler M, Amirav L. Size Matters: Cocatalyst Size Effect on Charge Transfer and Photocatalytic Activity. NANO LETTERS 2018; 18:357-364. [PMID: 29236508 DOI: 10.1021/acs.nanolett.7b04210] [Citation(s) in RCA: 47] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
Hybrid semiconductor-metallic nanostructures play an important role in a wide range of applications and are key components in photocatalysis. Here we reveal that the nature of a nanojunction formed between a semiconductor nanorod and metal nanoparticle is sensitive to the size of the metal component. This is reflected in the activity toward hydrogen production, emission quantum yields, and the efficiency of charge separation which is determined by transient absorption spectroscopy. A set of Ni decorated CdSe@CdS nanorods with different tip size were examined, and an optimal metal domain size of 5.2 nm was obtained. Remarkably, charge separation time constants were found to be nonvariant with metal tip size. It is proposed that electron transfer mechanism encompasses two consecutive but separate processes: slow charge migration along the rod toward the interface, followed by fast interface crossing of the electron from the semiconductor into the metal phase. The first migration step dominates the time constant for the charge separation process and is not affected by the metal size. The efficiency of charge separation on the other hand was found to be sensitive to metal size. It is suggested that Coulomb blockade charging energy and a size-dependent Schottky barrier contribute to the metal size effect on charge transfer probability across the semiconductor-metal nanojunction. These two opposing trends result in an optimal metal size domain for the cocatalyst. This work is expected to benefit a broad range of applications utilizing semiconductor-metal nanocomposites.
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Affiliation(s)
- Yifat Nakibli
- Schulich Faculty of Chemistry, Technion - Israel Institute of Technology , Haifa 32000, Israel
| | - Yair Mazal
- Department of Chemistry and the Ilse Katz center for Nanoscale Science and Technology, Ben-Gurion University of the Negev , Beer-Sheva 8410501, Israel
| | - Yonatan Dubi
- Department of Chemistry and the Ilse Katz center for Nanoscale Science and Technology, Ben-Gurion University of the Negev , Beer-Sheva 8410501, Israel
| | - Maria Wächtler
- Department Functional Interfaces, Leibniz Institute of Photonic Technology Jena , Albert-Einstein-Straße 9, 07745 Jena, Germany
| | - Lilac Amirav
- Schulich Faculty of Chemistry, Technion - Israel Institute of Technology , Haifa 32000, Israel
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26
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G. Verga L, Russell AE, Skylaris CK. Ethanol, O, and CO adsorption on Pt nanoparticles: effects of nanoparticle size and graphene support. Phys Chem Chem Phys 2018; 20:25918-25930. [DOI: 10.1039/c8cp04798g] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
DFT calculations reveal aspects of size and support effects for Pt nanoparticles on graphene interacting with O, CO and ethanol.
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Affiliation(s)
- L. G. Verga
- Department of Chemistry, University of Southampton
- Highfield
- UK
| | - A. E. Russell
- Department of Chemistry, University of Southampton
- Highfield
- UK
| | - C.-K. Skylaris
- Department of Chemistry, University of Southampton
- Highfield
- UK
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27
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Sun W, Wang Z, Zaman WQ, Zhou Z, Cao L, Gong XQ, Yang J. Effect of lattice strain on the electro-catalytic activity of IrO2 for water splitting. Chem Commun (Camb) 2018; 54:996-999. [DOI: 10.1039/c7cc09580e] [Citation(s) in RCA: 51] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Lattice strain control of the OER activity of IrO2.
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Affiliation(s)
- Wei Sun
- State Environmental Protection Key Laboratory of Environmental Risk Assessment and Control on Chemical Processes
- School of Resources and Environmental Engineering
- East China University of Science and Technology
- Shanghai 200237
- P. R. China
| | - Zhiqiang Wang
- Key Laboratory for Advanced Materials
- Center for Computational Chemistry and Research Institute of Industrial Catalysis
- East China University of Science and Technology
- Shanghai 200237
- P. R. China
| | - Waqas Qamar Zaman
- State Environmental Protection Key Laboratory of Environmental Risk Assessment and Control on Chemical Processes
- School of Resources and Environmental Engineering
- East China University of Science and Technology
- Shanghai 200237
- P. R. China
| | - Zhenhua Zhou
- State Environmental Protection Key Laboratory of Environmental Risk Assessment and Control on Chemical Processes
- School of Resources and Environmental Engineering
- East China University of Science and Technology
- Shanghai 200237
- P. R. China
| | - Limei Cao
- State Environmental Protection Key Laboratory of Environmental Risk Assessment and Control on Chemical Processes
- School of Resources and Environmental Engineering
- East China University of Science and Technology
- Shanghai 200237
- P. R. China
| | - Xue-Qing Gong
- Key Laboratory for Advanced Materials
- Center for Computational Chemistry and Research Institute of Industrial Catalysis
- East China University of Science and Technology
- Shanghai 200237
- P. R. China
| | - Ji Yang
- State Environmental Protection Key Laboratory of Environmental Risk Assessment and Control on Chemical Processes
- School of Resources and Environmental Engineering
- East China University of Science and Technology
- Shanghai 200237
- P. R. China
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28
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Settem M, Rajak P, Islam M, Bhattacharyya S. Influence of supporting amorphous carbon film thickness on measured strain variation within a nanoparticle. NANOSCALE 2017; 9:17054-17062. [PMID: 29085922 DOI: 10.1039/c7nr04334a] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Strain variation within a nanoparticle plays a crucial role in tuning its properties. High Resolution Transmission Electron Microscopy (HRTEM) images of a nanoparticle supported on amorphous carbon film are used to determine the strain variation. Experimental measurements in this present study on a single crystalline silver nanoparticle exhibited an unexpected high strain variation. Generally, the influence of carbon film is not accounted for during interpretation of measured strain variation. However, experimental observations raise the question whether the supporting carbon film alters the measured strain variation. In order to address this, strain variation within a simulated Ag nanoparticle supported on an amorphous carbon is measured with varying film thicknesses. The results show that supporting carbon film thickness introduces an artefact leading to more strain variation than what is present within an unsupported nanoparticle. Moreover, the variation increases with increasing supporting carbon film thickness. This effect is more pronounced in a thinner nanoparticle. Without considering this influence, the interpretation of strain within a nanoparticle may introduce severe errors which in turn will affect the tunability of desirable properties for different applications. Since strain measurement depends on the accuracy of the atomic position, the interpretation of any result using the atomic position from HRTEM images of a nanoparticle should consider the influence of supporting film.
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Affiliation(s)
- Manoj Settem
- Department of Metallurgical and Materials Engineering, Indian Institute of Technology Madras, Chennai, India - 600036.
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29
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Abstract
We present electrochemical and chemical synthesis of platinum black at room temperature in aqueous and non-aqueous media. X-ray analysis established the purity and crystalline nature. The electron micrographs indicate that the nanostructures consist of platinum crystals that interconnect to form porous assemblies. Additionally, the electron micrographs of the platinum black thin layer, which was electrochemically deposited on different metallic and semiconductive substrates (aluminium, platinum, silver, gold, tin-cooper alloy, indium-tin-oxide, stainless steel, and copper), indicate that the substrate influences its porous features but not its absorbance characteristics. The platinum black exhibited a broad absorbance and low reflectance in the ultraviolet, visible, and infrared regions. These characteristics make this material suitable for use as a high-temperature resistant absorber layer for the fabrication of microelectronics.
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30
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Moradabadi A, Ahmadi S, Kaghazchi P. Evidence of a strong effect of defect-free metal oxide supports on Pt nanoparticles. NANOSCALE 2017; 9:4478-4485. [PMID: 28304408 DOI: 10.1039/c6nr07816h] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Influence of metal oxide (MO) supports on nanoparticle (NP) catalysts is still under investigation. Theoretical studies demonstrate that active defect sites on the surface of a MO support can affect the structure and activity of metal clusters. In the present work, we show that even defect-free surfaces of MOs can cause considerable restructuring and accumulation of interfacial charges on Pt NPs of size 1 nm (Pt55). Independent of the type of MO support, we find that supported Pt55 behaves like a conductor since the binding energy of a test adsorbate on top of it is similar to that on an intact Pt55. However, adsorption energy at binding sites close to the perimeter of the nanoparticle/support interface can vary by 1.8 eV depending on the distance between the adsorbate and surface cations (possibility of forming ionic bonds) as well as the amount and sign of charges (ionization energy) of interfacial Pt atoms.
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Affiliation(s)
- Ashkan Moradabadi
- Institut für Chemie und Biochemie, Freie Universität Berlin, Takustr. 3, 14195 Berlin, Germany. and Institut für Materialwissenschaft, Fachgebiet Materialmodellierung, Technische Universität Darmstadt, Jovanka-Bontschits-Str. 2, 64287, Darmstadt, Germany
| | - Shideh Ahmadi
- NOVITAS, School of Electrical and Electronic Engineering, Nanyang Technological University, 639798 Singapore
| | - Payam Kaghazchi
- Institut für Chemie und Biochemie, Freie Universität Berlin, Takustr. 3, 14195 Berlin, Germany.
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31
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Tan S, Wang L, Saha S, Fushimi RR, Li D. Active Site and Electronic Structure Elucidation of Pt Nanoparticles Supported on Phase-Pure Molybdenum Carbide Nanotubes. ACS APPLIED MATERIALS & INTERFACES 2017; 9:9815-9822. [PMID: 28262012 DOI: 10.1021/acsami.7b01217] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
We recently showed that phase-pure molybdenum carbide nanotubes can be durable supports for platinum (Pt) nanoparticles in hydrogen evolution reaction (HER). In this paper we further characterize surface properties of the same Pt/β-Mo2C catalyst platform using carbon monoxide (CO)-Pt and CO-Mo2C bond strength of different Pt particle sizes in the <3 nm range. Results from diffuse reflectance infrared Fourier transform spectroscopy (DRIFTS) and temporal analysis of products (TAP) revealed the existence of different active sites as Pt particle size increases. Correlation between the resultant catalyst activity and deposited Pt particle size was further investigated using water-gas-shift (WGS) as a probe reaction, suggesting that precise control of particle diameter and thickness is needed for optimized catalytic activity.
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Affiliation(s)
- Shuai Tan
- Department of Chemical Engineering, University of Wyoming , Laramie, Wyoming 82071, United States
- Center for Advanced Energy Studies, Idaho Falls, Idaho 83401, United States
| | - Lucun Wang
- Biological and Chemical Processing Department, Energy and Environment Science and Technology, Idaho National Laboratory , Idaho Falls, Idaho 83415, United States
- Center for Advanced Energy Studies, Idaho Falls, Idaho 83401, United States
| | - Shibely Saha
- Department of Chemical Engineering, University of Wyoming , Laramie, Wyoming 82071, United States
| | - Rebecca R Fushimi
- Biological and Chemical Processing Department, Energy and Environment Science and Technology, Idaho National Laboratory , Idaho Falls, Idaho 83415, United States
- Center for Advanced Energy Studies, Idaho Falls, Idaho 83401, United States
| | - Dongmei Li
- Department of Chemical Engineering, University of Wyoming , Laramie, Wyoming 82071, United States
- Center for Advanced Energy Studies, Idaho Falls, Idaho 83401, United States
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Cellulose nanocrystal/hexadecyltrimethylammonium bromide/silver nanoparticle composite as a catalyst for reduction of 4-nitrophenol. Carbohydr Polym 2017; 156:253-258. [DOI: 10.1016/j.carbpol.2016.08.099] [Citation(s) in RCA: 86] [Impact Index Per Article: 12.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2016] [Revised: 08/27/2016] [Accepted: 08/30/2016] [Indexed: 11/20/2022]
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Kang J, Liang X, Guliants VV. Selective Hydrogenation of 2-Methylfuran and 2,5-Dimethylfuran over Atomic Layer Deposited Platinum Catalysts on Multiwalled Carbon Nanotube and Alumina Supports. ChemCatChem 2016. [DOI: 10.1002/cctc.201601215] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Jungshik Kang
- Department of Biomedical, Chemical and Environmental Engineering; University of Cincinnati; Cincinnati OH 45221 USA
| | - Xinhua Liang
- Department of Chemical and Biochemical Engineering; Missouri University of Science and Technology; Rolla MO 65409 USA
| | - Vadim V. Guliants
- Department of Biomedical, Chemical and Environmental Engineering; University of Cincinnati; Cincinnati OH 45221 USA
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Wang Y, Mohamedi M. Synthesis, Characterization, and Electrochemical Activity of Laser Co-deposited Pt-MnO2-Decorated Carbon Nanotube Nanocomposites. ChemElectroChem 2016. [DOI: 10.1002/celc.201600477] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Youling Wang
- Énergie, Matériaux et Télécommunications; Institut National de la Recherche Scientifique (INRS); 1650 Boulevard Lionel Boulet Varennes Québec J3X 1S2 Canada
| | - Mohamed Mohamedi
- Énergie, Matériaux et Télécommunications; Institut National de la Recherche Scientifique (INRS); 1650 Boulevard Lionel Boulet Varennes Québec J3X 1S2 Canada
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Proch S, Yoshino S, Kato N, Takahashi N, Morimoto Y. Titania Nanotube Arrays (TNAs) as Support for Oxygen Reduction Reaction (ORR) Platinum Thin Film Catalysts. Electrocatalysis (N Y) 2016. [DOI: 10.1007/s12678-016-0326-x] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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Verga LG, Aarons J, Sarwar M, Thompsett D, Russell AE, Skylaris CK. Effect of graphene support on large Pt nanoparticles. Phys Chem Chem Phys 2016; 18:32713-32722. [DOI: 10.1039/c6cp07334d] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
Large scale DFT calculations of Pt nanoparticles supported on graphene explore the non-trivial interplay of size and support effects.
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Affiliation(s)
- L. G. Verga
- Department of Chemistry
- University of Southampton
- Southampton SO17 1BJ
- UK
| | - J. Aarons
- Department of Chemistry
- University of Southampton
- Southampton SO17 1BJ
- UK
| | - M. Sarwar
- Johnson Matthey Technology Centre
- Blounts Court
- Reading
- UK
| | - D. Thompsett
- Johnson Matthey Technology Centre
- Blounts Court
- Reading
- UK
| | - A. E. Russell
- Department of Chemistry
- University of Southampton
- Southampton SO17 1BJ
- UK
| | - C.-K. Skylaris
- Department of Chemistry
- University of Southampton
- Southampton SO17 1BJ
- UK
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