1
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Schmitt C, Da Roit N, Neumaier M, Maliakkal CB, Wang D, Henrich T, Kübel C, Kappes M, Behrens S. Continuous flow synthesis of atom-precise platinum clusters. NANOSCALE ADVANCES 2024; 6:2459-2468. [PMID: 38694455 PMCID: PMC11059489 DOI: 10.1039/d4na00074a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 01/25/2024] [Accepted: 02/22/2024] [Indexed: 05/04/2024]
Abstract
Subnanometer clusters with precise atom numbers hold immense potential for applications in catalysis, as single atoms can significantly impact catalytic properties. Typically, inorganic clusters are produced using batch processes with high dilutions, making the scale-up of these processes time-consuming and its reproducibility challenging. While continuous-flow systems have been employed for organic synthesis and, more recently, nanoparticle preparation, these approaches have only rarely been applied to cluster synthesis. In a flexible, continuous flow synthesis platform, we integrate multiple continuous stirred tank reactors (CSTR) into a cascade to synthesize clusters with a precise number of atoms, demonstrating the potential of this approach for atom precise cluster synthesis and expanding the application of continuous-flow systems beyond organic synthesis.
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Affiliation(s)
- Christian Schmitt
- Institute of Catalysis Research and Technology, Karlsruhe Institute of Technology Hermann-von Helmholtz-Platz 1 76344 Eggenstein-Leopoldshafen Germany
| | - Nicola Da Roit
- Institute of Catalysis Research and Technology, Karlsruhe Institute of Technology Hermann-von Helmholtz-Platz 1 76344 Eggenstein-Leopoldshafen Germany
| | - Marco Neumaier
- Institute of Nanotechnology, Karlsruhe Institute of Technology Hermann-von Helmholtz-Platz 1 76344 Eggenstein-Leopoldshafen Germany
| | - Carina B Maliakkal
- Institute of Nanotechnology, Karlsruhe Institute of Technology Hermann-von Helmholtz-Platz 1 76344 Eggenstein-Leopoldshafen Germany
| | - Di Wang
- Institute of Nanotechnology, Karlsruhe Institute of Technology Hermann-von Helmholtz-Platz 1 76344 Eggenstein-Leopoldshafen Germany
- Karlsruhe Nano Micro Facility (KNMFi), Karlsruhe Institute of Technology (KIT) Hermann-von-Helmholtz-Platz 1 76344 Eggenstein-Leopoldshafen Germany
| | - Thilo Henrich
- Institute of Catalysis Research and Technology, Karlsruhe Institute of Technology Hermann-von Helmholtz-Platz 1 76344 Eggenstein-Leopoldshafen Germany
| | - Christian Kübel
- Institute of Nanotechnology, Karlsruhe Institute of Technology Hermann-von Helmholtz-Platz 1 76344 Eggenstein-Leopoldshafen Germany
- Karlsruhe Nano Micro Facility (KNMFi), Karlsruhe Institute of Technology (KIT) Hermann-von-Helmholtz-Platz 1 76344 Eggenstein-Leopoldshafen Germany
| | - Manfred Kappes
- Institute of Nanotechnology, Karlsruhe Institute of Technology Hermann-von Helmholtz-Platz 1 76344 Eggenstein-Leopoldshafen Germany
| | - Silke Behrens
- Institute of Catalysis Research and Technology, Karlsruhe Institute of Technology Hermann-von Helmholtz-Platz 1 76344 Eggenstein-Leopoldshafen Germany
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2
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Wang R, Chen D, Fang L, Fan W, You Q, Bian G, Zhou Y, Gu W, Wang C, Bai L, Li J, Deng H, Liao L, Yang J, Wu Z. Atomically Precise Nanometer-Sized Pt Catalysts with an Additional Photothermy Functionality. Angew Chem Int Ed Engl 2024:e202402565. [PMID: 38588114 DOI: 10.1002/anie.202402565] [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: 02/04/2024] [Revised: 04/04/2024] [Accepted: 04/08/2024] [Indexed: 04/10/2024]
Abstract
Atomically precise ~1-nm Pt nanoparticles (nanoclusters, NCs) with ambient stability are important in fundamental research and exhibit diverse practical applications (catalysis, biomedicine, etc.). However, synthesizing such materials is challenging. Herein, by employing the mixture ligand protecting strategy, we successfully synthesized the largest organic-ligand-protected (~1-nm) Pt23 NCs precisely characterized with mass spectrometry and single-crystal X-ray diffraction analyses. Interestingly, natural population analysis and Bader charge calculation indicate an alternate, varying charge -layer distribution in the sandwich-like Pt23 NC kernel. Pt23 NCs can catalyze the oxygen reduction reaction under acidic conditions without requiring calcination and other treatments, and the resulting specific and mass activities without further treatment are sevenfold and eightfold higher than those observed for commercial Pt/C catalysts, respectively. Density functional theory and d-band center calculations interpret the high activity. Furthermore, Pt23 NCs exhibit a photothermal conversion efficiency of 68.4 % under 532-nm laser irradiation and can be used at least for six cycles, thus demonstrating great potential for practical applications.
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Grants
- 21925303, 21829501, 21771186, 22075290, 22075291, 22272179, 21222301, 21171170, and 21528303 Natural Science Foundation of China
- BJPY2019A02 CASHIPS Director's Fund
- MESO-23-A06 State Key Laboratory of Mesoscience and Engineering, Institute of Process Engineering, Chinese Academy of Sciences
- 2020HSC-CIP005 and 2022HSC-CIP018 Innovative Program of Development Foundation of Hefei Center for Physical Science and Technology
- 2021M703251 China Postdoctoral Science Foundation
- YZJJ-GGZX-2022-01 and YZJJ202306-TS HFIPS Director's Fund
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Affiliation(s)
- Runguo Wang
- Key Laboratory of Materials Physics, Anhui Key Laboratory of Nanomaterials and Nanotechnology, CAS Center for Excellence in Nanoscience, Institute of Solid State Physics, HFIPS, Chinese Academy of Sciences, Hefei, 230031, China
- Key Laboratory of Precision and Intelligent Chemistry, University of Science and Technology of China, Hefei, 230026, P. R. China
- Institute of Physical Science and Information Technology, Anhui University, Hefei, 230601, P.R. China
| | - Dong Chen
- State Key Laboratory of Multiphase Complex Systems Institute of Process Engineering, Chinese Academy of Sciences, Beijing, 100190, P. R. China
| | - Liang Fang
- Key Laboratory of Materials Physics, Anhui Key Laboratory of Nanomaterials and Nanotechnology, CAS Center for Excellence in Nanoscience, Institute of Solid State Physics, HFIPS, Chinese Academy of Sciences, Hefei, 230031, China
- Institute of Physical Science and Information Technology, Anhui University, Hefei, 230601, P.R. China
| | - Wentao Fan
- Key Laboratory of Materials Physics, Anhui Key Laboratory of Nanomaterials and Nanotechnology, CAS Center for Excellence in Nanoscience, Institute of Solid State Physics, HFIPS, Chinese Academy of Sciences, Hefei, 230031, China
- Key Laboratory of Precision and Intelligent Chemistry, University of Science and Technology of China, Hefei, 230026, P. R. China
- Institute of Physical Science and Information Technology, Anhui University, Hefei, 230601, P.R. China
| | - Qing You
- Key Laboratory of Materials Physics, Anhui Key Laboratory of Nanomaterials and Nanotechnology, CAS Center for Excellence in Nanoscience, Institute of Solid State Physics, HFIPS, Chinese Academy of Sciences, Hefei, 230031, China
- Institute of Physical Science and Information Technology, Anhui University, Hefei, 230601, P.R. China
| | - Guoqing Bian
- Key Laboratory of Materials Physics, Anhui Key Laboratory of Nanomaterials and Nanotechnology, CAS Center for Excellence in Nanoscience, Institute of Solid State Physics, HFIPS, Chinese Academy of Sciences, Hefei, 230031, China
- Key Laboratory of Precision and Intelligent Chemistry, University of Science and Technology of China, Hefei, 230026, P. R. China
- Institute of Physical Science and Information Technology, Anhui University, Hefei, 230601, P.R. China
| | - Yue Zhou
- Key Laboratory of Materials Physics, Anhui Key Laboratory of Nanomaterials and Nanotechnology, CAS Center for Excellence in Nanoscience, Institute of Solid State Physics, HFIPS, Chinese Academy of Sciences, Hefei, 230031, China
- Key Laboratory of Precision and Intelligent Chemistry, University of Science and Technology of China, Hefei, 230026, P. R. China
- Institute of Physical Science and Information Technology, Anhui University, Hefei, 230601, P.R. China
| | - Wanmiao Gu
- Key Laboratory of Materials Physics, Anhui Key Laboratory of Nanomaterials and Nanotechnology, CAS Center for Excellence in Nanoscience, Institute of Solid State Physics, HFIPS, Chinese Academy of Sciences, Hefei, 230031, China
- Institute of Physical Science and Information Technology, Anhui University, Hefei, 230601, P.R. China
| | - Chengming Wang
- Instruments' Center for Physical Science, University of Science and Technology of China, Hefei, 230026, P. R. China
| | - Licheng Bai
- Shenzhen Engineering Center for the Fabrication of Two-Dimensional Atomic Crystals, Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences, Shenzhen, 518055, P. R. China
| | - Jin Li
- Tsinghua University-Peking University Joint Center for Life Sciences, School of Life Sciences, Tsinghua University, Beijing, 100084, P.R.China
| | - Haiteng Deng
- MOE Key Laboratory of Bioinformatics, School of Life Sciences, Tsinghua University, Beijing, 100084, P.R.China
| | - Lingwen Liao
- Key Laboratory of Materials Physics, Anhui Key Laboratory of Nanomaterials and Nanotechnology, CAS Center for Excellence in Nanoscience, Institute of Solid State Physics, HFIPS, Chinese Academy of Sciences, Hefei, 230031, China
- Institute of Physical Science and Information Technology, Anhui University, Hefei, 230601, P.R. China
| | - Jun Yang
- State Key Laboratory of Multiphase Complex Systems Institute of Process Engineering, Chinese Academy of Sciences, Beijing, 100190, P. R. China
| | - Zhikun Wu
- Key Laboratory of Materials Physics, Anhui Key Laboratory of Nanomaterials and Nanotechnology, CAS Center for Excellence in Nanoscience, Institute of Solid State Physics, HFIPS, Chinese Academy of Sciences, Hefei, 230031, China
- Institute of Physical Science and Information Technology, Anhui University, Hefei, 230601, P.R. China
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3
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Song KT, Zagalskaya A, Schott CM, Schneider PM, Garlyyev B, Alexandrov V, Bandarenka AS. Influence of Alkali Metal Cations on the Oxygen Reduction Activity of Pt 5Y and Pt 5Gd Alloys. THE JOURNAL OF PHYSICAL CHEMISTRY. C, NANOMATERIALS AND INTERFACES 2024; 128:4969-4977. [PMID: 38567375 PMCID: PMC10983829 DOI: 10.1021/acs.jpcc.4c00531] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 01/25/2024] [Revised: 02/28/2024] [Accepted: 02/28/2024] [Indexed: 04/04/2024]
Abstract
Electrolyte species can significantly influence the electrocatalytic performance. In this work, we investigate the impact of alkali metal cations on the oxygen reduction reaction (ORR) on active Pt5Gd and Pt5Y polycrystalline electrodes. Due to the strain effects, Pt alloys exhibit a higher kinetic current density of ORR than pure Pt electrodes in acidic media. In alkaline solutions, the kinetic current density of ORR for Pt alloys decreases linearly with the decreasing hydration energy in the order of Li+ > Na+ > K+ > Rb+ > Cs+, whereas Pt shows the opposite trend. To gain further insights into these experimental results, we conduct complementary density functional theory calculations considering the effects of both electrode surface strain and electrolyte chemistry. The computational results reveal that the different trends in the ORR activity in alkaline media can be explained by the change in the adsorption energy of reaction intermediates with applied surface strain in the presence of alkali metal cations. Our findings provide important insights into the effects of the electrolyte and the strain conditions on the electrocatalytic performance and thus offer valuable guidelines for optimizing Pt-based electrocatalysts.
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Affiliation(s)
- Kun-Ting Song
- Physik-Department
ECS, Technische Universität München, James-Franck-Str. 1, Garching D-85748, Germany
| | - Alexandra Zagalskaya
- Department
of Chemical and Biomolecular Engineering, University of Nebraska-Lincoln, Lincoln, Nebraska 68588, United States
- Quantum
Simulations Group, Materials Science Division, Lawrence Livermore National Laboratory, Livermore, California 94550, United States
| | - Christian M. Schott
- Physik-Department
ECS, Technische Universität München, James-Franck-Str. 1, Garching D-85748, Germany
| | - Peter M. Schneider
- Physik-Department
ECS, Technische Universität München, James-Franck-Str. 1, Garching D-85748, Germany
| | - Batyr Garlyyev
- Physik-Department
ECS, Technische Universität München, James-Franck-Str. 1, Garching D-85748, Germany
| | - Vitaly Alexandrov
- Department
of Chemical and Biomolecular Engineering, University of Nebraska-Lincoln, Lincoln, Nebraska 68588, United States
- Nebraska
Center for Materials and Nanoscience, University
of Nebraska-Lincoln, Lincoln, Nebraska 68588, United States
| | - Aliaksandr S. Bandarenka
- Physik-Department
ECS, Technische Universität München, James-Franck-Str. 1, Garching D-85748, Germany
- Catalysis
Research Center TUM, Ernst-Otto-Fischer-Straße 1, Garching
bei München 85748, Germany
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4
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Zhang C, Yang Y, Liu X, Mao M, Li K, Li Q, Zhang G, Wang C. Mobile energy storage technologies for boosting carbon neutrality. Innovation (N Y) 2023; 4:100518. [PMID: 37841885 PMCID: PMC10568306 DOI: 10.1016/j.xinn.2023.100518] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2023] [Accepted: 09/19/2023] [Indexed: 10/17/2023] Open
Abstract
Carbon neutrality calls for renewable energies, and the efficient use of renewable energies requires energy storage mediums that enable the storage of excess energy and reuse after spatiotemporal reallocation. Compared with traditional energy storage technologies, mobile energy storage technologies have the merits of low cost and high energy conversion efficiency, can be flexibly located, and cover a large range from miniature to large systems and from high energy density to high power density, although most of them still face challenges or technical bottlenecks. In this review, we provide an overview of the opportunities and challenges of these emerging energy storage technologies (including rechargeable batteries, fuel cells, and electrochemical and dielectric capacitors). Innovative materials, strategies, and technologies are highlighted. Finally, the future directions are envisioned. We hope this review will advance the development of mobile energy storage technologies and boost carbon neutrality.
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Affiliation(s)
- Chenyang Zhang
- School of Integrated Circuits, Wuhan National Laboratory for Optoelectronics (WNLO), Huazhong University of Science and Technology, Wuhan 430074, China
| | - Ying Yang
- School of Integrated Circuits, Wuhan National Laboratory for Optoelectronics (WNLO), Huazhong University of Science and Technology, Wuhan 430074, China
| | - Xuan Liu
- State Key Laboratory of Material Processing and Die & Mould Technology, School of Materials Science and Engineering, Huazhong University of Science and Technology, Wuhan 430074, China
| | - Minglei Mao
- School of Integrated Circuits, Wuhan National Laboratory for Optoelectronics (WNLO), Huazhong University of Science and Technology, Wuhan 430074, China
| | - Kanghua Li
- School of Integrated Circuits, Wuhan National Laboratory for Optoelectronics (WNLO), Huazhong University of Science and Technology, Wuhan 430074, China
| | - Qing Li
- State Key Laboratory of Material Processing and Die & Mould Technology, School of Materials Science and Engineering, Huazhong University of Science and Technology, Wuhan 430074, China
| | - Guangzu Zhang
- School of Integrated Circuits, Wuhan National Laboratory for Optoelectronics (WNLO), Huazhong University of Science and Technology, Wuhan 430074, China
| | - Chengliang Wang
- School of Integrated Circuits, Wuhan National Laboratory for Optoelectronics (WNLO), Huazhong University of Science and Technology, Wuhan 430074, China
- Wenzhou Advanced Manufacturing Institute, Huazhong University of Science and Technology, Wenzhou 325035, China
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5
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Calle-Vallejo F. The ABC of Generalized Coordination Numbers and Their Use as a Descriptor in Electrocatalysis. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2023:e2207644. [PMID: 37102632 PMCID: PMC10369287 DOI: 10.1002/advs.202207644] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/25/2022] [Revised: 03/08/2023] [Indexed: 06/19/2023]
Abstract
The quest for enhanced electrocatalysts can be boosted by descriptor-based analyses. Because adsorption energies are the most common descriptors, electrocatalyst design is largely based on brute-force routines that comb materials databases until an energetic criterion is verified. In this review, it is shown that an alternative is provided by generalized coordination numbers (denoted by CN ¯ $\overline {{\rm{CN}}} $ or GCN), an inexpensive geometric descriptor for strained and unstrained transition metals and some alloys. CN ¯ $\overline {{\rm{CN}}} $ captures trends in adsorption energies on both extended surfaces and nanoparticles and is used to elaborate structure-sensitive electrocatalytic activity plots and selectivity maps. Importantly, CN ¯ $\overline {{\rm{CN}}} $ outlines the geometric configuration of the active sites, thereby enabling an atom-by-atom design, which is not possible using energetic descriptors. Specific examples for various adsorbates (e.g., *OH, *OOH, *CO, and *H), metals (e.g., Pt and Cu), and electrocatalytic reactions (e.g., O2 reduction, H2 evolution, CO oxidation, and reduction) are presented, and comparisons are made against other descriptors.
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Affiliation(s)
- Federico Calle-Vallejo
- Nano-Bio Spectroscopy Group and European Theoretical Spectroscopy Facility (ETSF), Department of Advanced Materials and Polymers: Physics, Chemistry and Technology, University of the Basque Country UPV/EHU, 20018, Av. Tolosa 72, San Sebastián, Spain
- IKERBASQUE, Basque Foundation for Science, Plaza de Euskadi 5, Bilbao, 48009, Spain
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6
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Kawawaki T, Mitomi Y, Nishi N, Kurosaki R, Oiwa K, Tanaka T, Hirase H, Miyajima S, Niihori Y, Osborn DJ, Koitaya T, Metha GF, Yokoyama T, Iida K, Negishi Y. Pt 17 nanocluster electrocatalysts: preparation and origin of high oxygen reduction reaction activity. NANOSCALE 2023; 15:7272-7279. [PMID: 36987742 DOI: 10.1039/d3nr01152f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/19/2023]
Abstract
We recently found that [Pt17(CO)12(PPh3)8]z (Pt = platinum; CO = carbon monoxide; PPh3 = triphenylphosphine; z = 1+ or 2+) is a Pt nanocluster (Pt NC) that can be synthesized with atomic precision in air. The present study demonstrates that it is possible to prepare a Pt17-supported carbon black (CB) catalyst (Pt17/CB) with 2.1 times higher oxygen reduction reaction (ORR) activity than commercial Pt nanoparticles/CB by the adsorption of [Pt17(CO)12(PPh3)8]z onto CB and subsequent calcination of the catalyst. Density functional theory calculation strongly suggests that the high ORR activity of Pt17/CB originates from the surface Pt atoms that have an electronic structure appropriate for the progress of ORR. These results are expected to provide design guidelines for the fabrication of highly active ORR catalysts using Pt NCs with a diameter of about 1 nm and thereby enabling the use of reduced amounts of Pt in polymer electrolyte fuel cells.
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Affiliation(s)
- Tokuhisa Kawawaki
- Department of Applied Chemistry, Faculty of Science, Tokyo University of Science, Kagurazaka, Shinjuku-ku, Tokyo 162-8601, Japan.
- Research Institute for Science & Technology, Tokyo University of Science, Kagurazaka, Shinjuku-ku, Tokyo 162-8601, Japan
- Physical and Chemical Research Infrastructure Group, RIKEN SPring-8 Center, RIKEN, Sayo, Hyogo 679-5198, Japan
| | - Yusuke Mitomi
- Department of Applied Chemistry, Faculty of Science, Tokyo University of Science, Kagurazaka, Shinjuku-ku, Tokyo 162-8601, Japan.
| | - Naoki Nishi
- Department of Applied Chemistry, Faculty of Science, Tokyo University of Science, Kagurazaka, Shinjuku-ku, Tokyo 162-8601, Japan.
| | - Ryuki Kurosaki
- Department of Applied Chemistry, Faculty of Science, Tokyo University of Science, Kagurazaka, Shinjuku-ku, Tokyo 162-8601, Japan.
| | - Kazutaka Oiwa
- Department of Applied Chemistry, Faculty of Science, Tokyo University of Science, Kagurazaka, Shinjuku-ku, Tokyo 162-8601, Japan.
| | - Tomoya Tanaka
- Department of Applied Chemistry, Faculty of Science, Tokyo University of Science, Kagurazaka, Shinjuku-ku, Tokyo 162-8601, Japan.
| | - Hinoki Hirase
- Institute for Catalysis, Hokkaido University, Sapporo, Hokkaido 001-0021, Japan
| | - Sayuri Miyajima
- Department of Applied Chemistry, Faculty of Science, Tokyo University of Science, Kagurazaka, Shinjuku-ku, Tokyo 162-8601, Japan.
| | - Yoshiki Niihori
- Research Institute for Science & Technology, Tokyo University of Science, Kagurazaka, Shinjuku-ku, Tokyo 162-8601, Japan
| | - D J Osborn
- Department of Chemistry, University of Adelaide, Adelaide, South Australia, 5005, Australia
| | - Takanori Koitaya
- Physical and Chemical Research Infrastructure Group, RIKEN SPring-8 Center, RIKEN, Sayo, Hyogo 679-5198, Japan
- Institute for Molecular Science, Okazaki, Aichi 444-8585, Japan
| | - Gregory F Metha
- Department of Chemistry, University of Adelaide, Adelaide, South Australia, 5005, Australia
| | - Toshihiko Yokoyama
- Physical and Chemical Research Infrastructure Group, RIKEN SPring-8 Center, RIKEN, Sayo, Hyogo 679-5198, Japan
- Institute for Molecular Science, Okazaki, Aichi 444-8585, Japan
| | - Kenji Iida
- Institute for Catalysis, Hokkaido University, Sapporo, Hokkaido 001-0021, Japan
| | - Yuichi Negishi
- Department of Applied Chemistry, Faculty of Science, Tokyo University of Science, Kagurazaka, Shinjuku-ku, Tokyo 162-8601, Japan.
- Research Institute for Science & Technology, Tokyo University of Science, Kagurazaka, Shinjuku-ku, Tokyo 162-8601, Japan
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7
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Zhang W, Li J, Wei Z. How Size and Strain Effect Synergistically Improve Electrocatalytic Activity: A Systematic Investigation Based on PtCoCu Alloy Nanocrystals. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2023:e2300112. [PMID: 37026444 DOI: 10.1002/smll.202300112] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/05/2023] [Revised: 03/06/2023] [Indexed: 06/19/2023]
Abstract
To reveal how the size effect and strain effect synergistically regulate the mass activity (MA) and specific activity (SA) of Pt alloy nanocrystal catalysts in oxygen reduction reaction (ORR), remains to be difficult due to the highly entangled factors. In this work, six ternary PtCoCu catalysts with sequentially changed composition, size, and compression strain are prepared. It is found that the smaller the alloy particles, the higher the electrochemical active surface area (ECSA) and MA values, that is, the particle size plays a decisive role in the size of the ECSA and MA. While, along alloy size decrease, the intrinsic activity SA first increases, then remains unchanged, and finally rapidly increases again. This detailed analysis shows that for the alloys above 4 nm, it is the surface coordination number that decides the SA, while for those below 4 nm, it is the well-regulated compression strain that determines the SA. Particularly, Pt47 Co26 Cu27 demonstrates the MA of 1.19 A mgPt -1 and SA of 1.48 mA cm-2 , being 7.9 and 6.4 times those of commercial Pt/C respectively, representing an especially superior ORR catalyst.
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Affiliation(s)
- Wenjing Zhang
- School of Chemistry and Chemical Engineering, Chongqing University, Daxuecheng South Road 55, Chongqing, 401331, China
| | - Jing Li
- School of Chemistry and Chemical Engineering, Chongqing University, Daxuecheng South Road 55, Chongqing, 401331, China
| | - Zidong Wei
- School of Chemistry and Chemical Engineering, Chongqing University, Daxuecheng South Road 55, Chongqing, 401331, China
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8
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Tunable Aryl Alkyl Ionic Liquid Supported Synthesis of Platinum Nanoparticles and Their Catalytic Activity in the Hydrogen Evolution Reaction and in Hydrosilylation. MOLECULES (BASEL, SWITZERLAND) 2023; 28:molecules28010405. [PMID: 36615598 PMCID: PMC9822459 DOI: 10.3390/molecules28010405] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/01/2022] [Revised: 12/20/2022] [Accepted: 12/21/2022] [Indexed: 01/06/2023]
Abstract
Tunable aryl alkyl ionic liquids (TAAILs) are ionic liquids (ILs) with a 1-aryl-3-alkylimidazolium cation having differently substituted aryl groups. Herein, nine TAAILs with the bis(trifluoromethylsulfonyl)imide anion are utilized in combination with and without ethylene glycol (EG) as reaction media for the rapid microwave synthesis of platinum nanoparticles (Pt-NPs). TAAILs allow the synthesis of small NPs and are efficient solvents for microwave absorption. Transmission electron microscopy (TEM) shows that small primary NPs with sizes of 2 nm to 5 nm are obtained in TAAILs and EG/TAAIL mixtures. The Pt-NPs feature excellent activity as electrocatalysts in the hydrogen evolution reaction (HER) under acidic conditions, with an overpotential at a current density of 10 mA cm-2 as low as 32 mV vs the reversible hydrogen electrode (RHE), which is significantly lower than the standard Pt/C 20% with 42 mV. Pt-NPs obtained in TAAILs also achieved quantitative conversion in the hydrosilylation reaction of phenylacetylene with triethylsilane after just 5 min at 200 °C.
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9
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Zhang J, Guan B, Wu X, Chen Y, Guo J, Ma Z, Bao S, Jiang X, Chen L, Shu K, Dang H, Guo Z, Li Z, Huang Z. Research on photocatalytic CO 2 conversion to renewable synthetic fuels based on localized surface plasmon resonance: current progress and future perspectives. Catal Sci Technol 2023. [DOI: 10.1039/d2cy01967a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/11/2023]
Abstract
Due to its desirable optoelectronic properties, localized surface plasmon resonance (LSPR) can hopefully play a promising role in photocatalytic CO2 reduction reaction (CO2RR). In this review, mechanisms and applications of LSPR effect in this field are introduced in detail.
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Affiliation(s)
- Jinhe Zhang
- Key Laboratory for Power Machinery and Engineering of Ministry of Education, Shanghai Jiao Tong University, Dongchuan Road No. 800, Min Hang District, Shanghai 200240, P.R. China
| | - Bin Guan
- Key Laboratory for Power Machinery and Engineering of Ministry of Education, Shanghai Jiao Tong University, Dongchuan Road No. 800, Min Hang District, Shanghai 200240, P.R. China
| | - Xingze Wu
- Key Laboratory for Power Machinery and Engineering of Ministry of Education, Shanghai Jiao Tong University, Dongchuan Road No. 800, Min Hang District, Shanghai 200240, P.R. China
| | - Yujun Chen
- Key Laboratory for Power Machinery and Engineering of Ministry of Education, Shanghai Jiao Tong University, Dongchuan Road No. 800, Min Hang District, Shanghai 200240, P.R. China
| | - Jiangfeng Guo
- Key Laboratory for Power Machinery and Engineering of Ministry of Education, Shanghai Jiao Tong University, Dongchuan Road No. 800, Min Hang District, Shanghai 200240, P.R. China
| | - Zeren Ma
- Key Laboratory for Power Machinery and Engineering of Ministry of Education, Shanghai Jiao Tong University, Dongchuan Road No. 800, Min Hang District, Shanghai 200240, P.R. China
| | - Shibo Bao
- Key Laboratory for Power Machinery and Engineering of Ministry of Education, Shanghai Jiao Tong University, Dongchuan Road No. 800, Min Hang District, Shanghai 200240, P.R. China
| | - Xing Jiang
- Key Laboratory for Power Machinery and Engineering of Ministry of Education, Shanghai Jiao Tong University, Dongchuan Road No. 800, Min Hang District, Shanghai 200240, P.R. China
| | - Lei Chen
- Key Laboratory for Power Machinery and Engineering of Ministry of Education, Shanghai Jiao Tong University, Dongchuan Road No. 800, Min Hang District, Shanghai 200240, P.R. China
| | - Kaiyou Shu
- Key Laboratory for Power Machinery and Engineering of Ministry of Education, Shanghai Jiao Tong University, Dongchuan Road No. 800, Min Hang District, Shanghai 200240, P.R. China
| | - Hongtao Dang
- Key Laboratory for Power Machinery and Engineering of Ministry of Education, Shanghai Jiao Tong University, Dongchuan Road No. 800, Min Hang District, Shanghai 200240, P.R. China
| | - Zelong Guo
- Key Laboratory for Power Machinery and Engineering of Ministry of Education, Shanghai Jiao Tong University, Dongchuan Road No. 800, Min Hang District, Shanghai 200240, P.R. China
| | - Zekai Li
- Key Laboratory for Power Machinery and Engineering of Ministry of Education, Shanghai Jiao Tong University, Dongchuan Road No. 800, Min Hang District, Shanghai 200240, P.R. China
| | - Zhen Huang
- Key Laboratory for Power Machinery and Engineering of Ministry of Education, Shanghai Jiao Tong University, Dongchuan Road No. 800, Min Hang District, Shanghai 200240, P.R. China
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10
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Parapat RY, Schwarze M, Ibrahim A, Tasbihi M, Schomäcker R. Efficient preparation of nanocatalysts. Case study: green synthesis of supported Pt nanoparticles by using microemulsions and mangosteen peel extract. RSC Adv 2022; 12:34346-34358. [PMID: 36545582 PMCID: PMC9709592 DOI: 10.1039/d2ra04134k] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2022] [Accepted: 11/07/2022] [Indexed: 12/03/2022] Open
Abstract
Greener nanocatalyst synthesis is growing in importance, especially when using scarce noble metals such as platinum (Pt) as the active metal. In the synthesis process presented herein, we utilized extract of mangosteen peel as a green reductant and found that it produces Pt nanoparticles (NPs) with high activity. The supported Pt NPs were synthesized via thermos-destabilization of a mangosteen extract microemulsion and subsequently tested with α-methyl styrene (AMS) hydrogenation at SATP. Additionally, we optimized the green synthesis of the supported Pt nanocatalyst (NPs) in terms of their synthesis yield and catalytic activity using the approaches of full factorial design (FFD), central composite design (CCD), and response surface methodology (RSM). In comparing the results of single and multiple optimization, it was found that for the single optimization, the synthesis yield of supported Pt NPs could be increased from their average value of 78.9% to 99.75%, and their activity from 2136 to 15 600 μmol s-1 gPt -1. The results of multiple response optimization to the yield and activity are 81.71% and 8255 μmol s-1 gPt -1, respectively. The optimization approach presented in this study is suitable for similar catalyst synthesis procedures where multivariate responses are sensitive to a number of experimental factors.
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Affiliation(s)
- Riny Yolandha Parapat
- Chemical Engineering Department, Institut Teknologi Nasional BandungPHH. Mustopha 2340124 BandungIndonesia,Department of Chemistry, Technische Universität BerlinStraße des 17. Juni 12410623 BerlinGermany
| | - Michael Schwarze
- Department of Chemistry, Technische Universität BerlinStraße des 17. Juni 12410623 BerlinGermany
| | - Alwin Ibrahim
- Chemical Engineering Department, Institut Teknologi Nasional BandungPHH. Mustopha 2340124 BandungIndonesia
| | - Minoo Tasbihi
- Department of Chemistry, Technische Universität BerlinStraße des 17. Juni 12410623 BerlinGermany
| | - Reinhard Schomäcker
- Department of Chemistry, Technische Universität BerlinStraße des 17. Juni 12410623 BerlinGermany
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11
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Designing fuel cell catalyst support for superior catalytic activity and low mass-transport resistance. Nat Commun 2022; 13:6157. [PMID: 36257992 PMCID: PMC9579166 DOI: 10.1038/s41467-022-33892-8] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2020] [Accepted: 10/06/2022] [Indexed: 11/10/2022] Open
Abstract
The development of low-Platinum content polymer electrolyte fuel cells (PEFCs) has been hindered by inexplicable reduction of oxygen reduction reaction (ORR) activity and unexpected O2 mass transport resistance when catalysts have been interfaced with ionomer in a cathode catalyst layer. In this study, we introduce a bottom-up designed spherical carbon support with intrinsic Nitrogen-doping that permits uniform dispersion of Pt catalyst, which reproducibly exhibits high ORR mass activity of 638 ± 68 mA mgPt−1 at 0.9 V and 100% relative humidity (RH) in a membrane electrode assembly. The uniformly distributed Nitrogen-functional surface groups on the carbon support surface promote high ionomer coverage directly evidenced by high-resolution electron microscopy and nearly humidity-independent double layer capacitance. The hydrophilic nature of the carbon surface appears to ensure high activity and performance for operation over a broad range of RH. The paradigm challenging large carbon support (~135 nm) combined with favourable ionomer film structure, hypothesized recently to arise from the interactions of an ionic moiety of the ionomer and Nitrogen-functional group of the catalyst support, results in an unprecedented low local oxygen transport resistance (5.0 s cm−1) for ultra-low Pt loading (34 ± 2 μgPt cm−2) catalyst layer. Development of high-performance polymer electrolyte fuel cells has historically focused on designing new catalysts and ionomers. Here, the authors present a bottom-up approach for designing catalyst support that achieves superior oxygen reduction activity and low local oxygen transport resistance in a membrane electrode assembly.
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12
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Cesari C, Berti B, Funaioli T, Femoni C, Iapalucci MC, Pontiroli D, Magnani G, Riccò M, Bortoluzzi M, Vivaldi FM, Zacchini S. Atomically Precise Platinum Carbonyl Nanoclusters: Synthesis, Total Structure, and Electrochemical Investigation of [Pt 27(CO) 31] 4- Displaying a Defective Structure. Inorg Chem 2022; 61:12534-12544. [PMID: 35920640 PMCID: PMC9387524 DOI: 10.1021/acs.inorgchem.2c00965] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
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The molecular Pt nanocluster [Pt27(CO)31]4– (14–)
was obtained by thermal decomposition of [Pt15(CO)30]2– in tetrahydrofuran under a H2 atmosphere. The reaction of 14– with increasing amounts of HBF4·Et2O afforded the previously reported [Pt26(CO)32]2– (32–) and [Pt26(CO)32]− (3–).
The new nanocluster 14– was characterized by IR and UV–visible spectroscopy, single-crystal
X-ray diffraction, direct-current superconducting quantum interference
device magnetometry, cyclic voltammetry, IR spectroelectrochemistry
(IR SEC), and electrochemical impedance spectroscopy. The cluster
displays a cubic-close-packed Pt27 framework generated
by the overlapping of four ABCA layers, composed of 3, 7, 11, and
6 atoms, respectively, that encapsulates a fully interstitial Pt4 tetrahedron. One Pt atom is missing within layer 3, and this
defect (vacancy) generates local deformations within layers 2 and
3. These local deformations tend to repair the defect (missing atom)
and increase the number of Pt–Pt bonding contacts, minimizing
the total energy. The cluster 14– is perfectly diamagnetic and displays a rich electrochemical
behavior. Indeed, six different oxidation states have been characterized
by IR SEC, unraveling the series of 1n– (n = 3–8)
isostructural nanoclusters. Computational studies have been carried
out to further support the interpretation of the experimental data. The synthesis, molecular structure, magnetic
properties,
computational investigation, electrochemical and IR spectroelectrochemical
behavior, and electrochemical impedance spectroscopy investigation
of the new multivalent [Pt27(CO)31]4− nanocluster are reported.
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Affiliation(s)
- Cristiana Cesari
- Dipartimento di Chimica Industriale "Toso Montanari", Università di Bologna, Viale Risorgimento 4, Bologna 40136, Italy
| | - Beatrice Berti
- Dipartimento di Chimica Industriale "Toso Montanari", Università di Bologna, Viale Risorgimento 4, Bologna 40136, Italy
| | - Tiziana Funaioli
- Dipartimento di Chimica e Chimica Industriale, Università di Pisa, Via G. Moruzzi 13, Pisa 56124, Italy
| | - Cristina Femoni
- Dipartimento di Chimica Industriale "Toso Montanari", Università di Bologna, Viale Risorgimento 4, Bologna 40136, Italy
| | - Maria Carmela Iapalucci
- Dipartimento di Chimica Industriale "Toso Montanari", Università di Bologna, Viale Risorgimento 4, Bologna 40136, Italy
| | - Daniele Pontiroli
- Dipartimento di Scienze Matematiche, Fisiche e Informatiche, and INSTM, Università degli Studi di Parma, Viale delle Scienze 7/a, Parma 43124, Italy
| | - Giacomo Magnani
- Dipartimento di Scienze Matematiche, Fisiche e Informatiche, and INSTM, Università degli Studi di Parma, Viale delle Scienze 7/a, Parma 43124, Italy
| | - Mauro Riccò
- Dipartimento di Scienze Matematiche, Fisiche e Informatiche, and INSTM, Università degli Studi di Parma, Viale delle Scienze 7/a, Parma 43124, Italy
| | - Marco Bortoluzzi
- Dipartimento di Scienze Molecolari e Nanosistemi, Ca'Foscari University of Venice, Via Torino 155, Mestre (Ve) 30175, Italy
| | - Federico Maria Vivaldi
- Dipartimento di Chimica e Chimica Industriale, Università di Pisa, Via G. Moruzzi 13, Pisa 56124, Italy
| | - Stefano Zacchini
- Dipartimento di Chimica Industriale "Toso Montanari", Università di Bologna, Viale Risorgimento 4, Bologna 40136, Italy
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13
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Das BK, Sen D, Chattopadhyay KK. Mechanism of Oxygen Reduction Reaction in Alkaline Medium on Nitrogen-Doped Graphyne and Graphdiyne Families: A First Principles Study. Chemphyschem 2022; 23:e202100900. [PMID: 35322523 DOI: 10.1002/cphc.202100900] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2021] [Revised: 02/14/2022] [Indexed: 11/08/2022]
Abstract
Using extensive first principles protocols, a systematic investigation is performed to probe the oxygen reduction reaction (ORR) mechanism on nitrogen (N) doped graphynes (Gys, e. g. αGy, βGy, γGy and 6,6,12Gy) and graphdiyne (Gdy) in alkaline medium. We considered both associative and dissociative pathways, as well as two distinct intermediate forks for each of them depending on the first protonation site(s). Following the dissociative approach, the activation energy to form an O2 dissociated configuration is found as a function of the distances migrated by the O atoms over the catalyst surface and the amount of charge transferred from the C atoms linked to N. N doped αGy and 6,6,12Gy emerged as the best electrocatalyst comparing both pathways having lowest overpotentials of 0.88 and 0.82 V, respectively. The rate-limiting steps for the two different intermediate routes are observed to be dependent on the first protonation site(s) and related to the desorption of the OH radical from the sp hybridized C atom site(s) linked to N. Hence, the OH adsorption energy is identified as a descriptor for the efficiency of the ORR for the considered systems. The stabilities of the ORR intermediates are further elaborated in terms of pH and electrode potential.
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Affiliation(s)
- Bikram Kumar Das
- Thin Film and NanoScience Laboratory, Department of Physics, Jadavpur University, Kolkata, 700032, India
| | - Dipayan Sen
- Thin Film and NanoScience Laboratory, Department of Physics, Jadavpur University, Kolkata, 700032, India.,Current Address: Department of Physics, University of Calcutta, Kolkata, 700009, India
| | - K K Chattopadhyay
- Thin Film and NanoScience Laboratory, Department of Physics, Jadavpur University, Kolkata, 700032, India.,School of Materials Science & Nanotechnology, Jadavpur University, Kolkata, 700032, India
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14
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Nair AS, Anoop A, Ahuja R, Pathak B. Relativistic Effects in Platinum Nanocluster Catalysis: A Statistical Ensemble-Based Analysis. J Phys Chem A 2022; 126:1345-1359. [PMID: 35188378 DOI: 10.1021/acs.jpca.1c09981] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Nanoclusters are materials of paramount catalytic importance. Among various unique properties featured by nanoclusters, a pronounced relativistic effect can be a decisive parameter in governing their catalytic activity. A concise study delineating the role of relativistic effects in nanocluster catalysis is carried by investigating the oxygen reduction reaction (ORR) activity of a Pt7 subnanometer cluster. Global optimization analysis shows the critical role of spin-orbit coupling (SOC) in regulating the relative stability between structural isomers of the cluster. An overall improved ORR adsorption energetics and differently scaled adsorption-induced structural changes are identified with SOC compared to a non-SOC scenario. Ab initio atomistic thermodynamics analysis predicted nearly identical phase diagrams with significant structural differences for high coverage oxygenated clusters under realistic conditions. Though inclusion of SOC does not bring about drastic changes in the overall catalytic activity of the cluster, it is having a crucial role in governing the rate-determining step, transition-state configuration, and energetics of elementary reaction pathways. Furthermore, a statistical ensemble-based approach illustrates the strong contribution of low-energy local minimum structural isomers to the total ORR activity, which is significantly scaled up along the activity improving direction within the SOC framework. The study provides critical insights toward the importance of relativistic effects in determining various catalytic activity relevant features of nanoclusters.
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Affiliation(s)
- Akhil S Nair
- Department of Chemistry, Indian Institute of Technology Indore, Simrol, Indore, 453552, India
| | - Anakuthil Anoop
- Department of Chemistry, Indian Institute of Kharagpur, Kharagpur, West Bengal 721302, India
| | - Rajeev Ahuja
- Condensed Matter Theory Group, Department of Physics and Astronomy, Uppsala University, Uppsala, 75120, Sweden.,Department of Physics, Indian Institute of Technology Ropar, Ropar, Punjab, 140001, India
| | - Biswarup Pathak
- Department of Chemistry, Indian Institute of Technology Indore, Simrol, Indore, 453552, India
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15
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Zhang Q, Kusada K, Wu D, Yamamoto T, Toriyama T, Matsumura S, Kawaguchi S, Kubota Y, Kitagawa H. Crystal Structure Control of Binary and Ternary Solid-Solution Alloy Nanoparticles with a Face-Centered Cubic or Hexagonal Close-Packed Phase. J Am Chem Soc 2022; 144:4224-4232. [PMID: 35196005 DOI: 10.1021/jacs.2c00583] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
The crystal structure significantly affects the physical and chemical properties of solids. However, the crystal structure-dependent properties of alloys are rarely studied because controlling the crystal structure of an alloy at the same composition is extremely difficult. Here, for the first time, we successfully demonstrate the synthesis of binary Ru-Pt (Ru/Pt = 7:3) and Ru-Ir (Ru/Ir = 7:3) and ternary Ru-Ir-Pt (Ru/Ir/Pt = 7:1.5:1.5) solid-solution alloy nanoparticles (NPs) with well-controlled hexagonal close-packed (hcp) and face-centered cubic (fcc) phases, through the chemical reduction method. The crystal structure control is realized by precisely tunning the reduction speeds of the metal precursors. The effect of the crystal structure on the catalytic performance of solid-solution alloy NPs is systematically investigated. Impressively, all the hcp alloy NPs show superior electrocatalytic activities for the hydrogen evolution reaction in alkaline solution compared with the fcc alloy NPs. In particular, hcp-RuIrPt exhibits extremely high intrinsic (mass) activity, which is 3.1 (3.2) and 6.7 (6.9) times enhanced compared to that of fcc-RuIrPt and commercial Pt/C.
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Affiliation(s)
- Quan Zhang
- Division of Chemistry, Graduate School of Science, Kyoto University, Kitashirakawa-Oiwakecho, Sakyo-ku, Kyoto 606-8502, Japan
| | - Kohei Kusada
- Division of Chemistry, Graduate School of Science, Kyoto University, Kitashirakawa-Oiwakecho, Sakyo-ku, Kyoto 606-8502, Japan
| | - Dongshuang Wu
- Division of Chemistry, Graduate School of Science, Kyoto University, Kitashirakawa-Oiwakecho, Sakyo-ku, Kyoto 606-8502, Japan
| | - Tomokazu Yamamoto
- The Ultramicroscopy Research Centre, Kyushu University, Motooka 744, Nishi-ku, Fukuoka 819-0395, Japan
| | - Takaaki Toriyama
- The Ultramicroscopy Research Centre, Kyushu University, Motooka 744, Nishi-ku, Fukuoka 819-0395, Japan
| | - Syo Matsumura
- The Ultramicroscopy Research Centre, Kyushu University, Motooka 744, Nishi-ku, Fukuoka 819-0395, Japan.,Department of Applied Quantum Physics and Nuclear Engineering, Kyushu University, 744 Motooka, Nishi-ku, Fukuoka 819-0395, Japan
| | - Shogo Kawaguchi
- Japan Synchrotron Radiation Research Insitute (JASRI), SPring-8, 1-1-1 Kouto, Sayo-cho, Sayo-gun, Hyogo 679-5198, Japan
| | - Yoshiki Kubota
- Department of Physical Science, Graduate School of Science, Osaka Prefecture University, Sakai, Osaka 599-8531, Japan
| | - Hiroshi Kitagawa
- Division of Chemistry, Graduate School of Science, Kyoto University, Kitashirakawa-Oiwakecho, Sakyo-ku, Kyoto 606-8502, Japan
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16
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Guo P, Liu B, Dai YK, Gong XF, Xia YF, Zhang YL, Liu B, Zhao L, Sui XL, Wang ZB. Coupling fine Pt nanoparticles and Co-N x moiety as a synergistic bi-active site catalyst for oxygen reduction reaction in acid media. J Colloid Interface Sci 2022; 613:276-284. [PMID: 35042028 DOI: 10.1016/j.jcis.2022.01.042] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2021] [Revised: 01/05/2022] [Accepted: 01/06/2022] [Indexed: 10/19/2022]
Abstract
Fabricating high-efficiency catalysts of Pt nanoparticles coupled with single-atom sites (MNC) attracts intensive attention to accelerate the oxygen reduction reaction (ORR). Here we rationally design the low-Pt hybrid catalyst containing fine Pt nanoparticles coupled with Co-Nx moieties via a microwave-assisted heating process. The well-dispersed Pt nanoparticles are anchored by CoNC supports because of the metal-support interaction. Furthermore, the Co-Nx moiety acts as an electron donor to regulate the electronic structure of Pt through the electron synergistic effect, moderating the adsorption energy of oxygen intermediates on Pt sites, and then increasing the intrinsic activity of Pt. In addition, the overflow effect from CoNC to Pt facilitates a nearly four-electron process and enhances the kinetics of ORR. In acid media, the optimized 10% Pt/CoNC hybrid catalysts with Pt nanoparticles size (2.18 nm) exhibit improved ORR activity and robust durability, delivering a half-wave potential (E1/2) of 0.886 V and negligible loss after accelerated durability test, exceeding the best-in-class commercial Pt/C. The finding of the synergy between CoNC supports and Pt nanoparticles offers a novel ideation to construct various low-loading Pt-based hybrid catalysts.
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Affiliation(s)
- Pan Guo
- MIIT Key Laboratory of Critical Materials Technology for New Energy Conversion and Storage, School of Chemistry and Chemical Engineering, State Key Lab of Urban Water Resource and Environment, Harbin Institute of Technology, Harbin, Heilongjiang 150001, China
| | - Bo Liu
- MIIT Key Laboratory of Critical Materials Technology for New Energy Conversion and Storage, School of Chemistry and Chemical Engineering, State Key Lab of Urban Water Resource and Environment, Harbin Institute of Technology, Harbin, Heilongjiang 150001, China
| | - Yun-Kun Dai
- MIIT Key Laboratory of Critical Materials Technology for New Energy Conversion and Storage, School of Chemistry and Chemical Engineering, State Key Lab of Urban Water Resource and Environment, Harbin Institute of Technology, Harbin, Heilongjiang 150001, China
| | - Xiao-Fei Gong
- MIIT Key Laboratory of Critical Materials Technology for New Energy Conversion and Storage, School of Chemistry and Chemical Engineering, State Key Lab of Urban Water Resource and Environment, Harbin Institute of Technology, Harbin, Heilongjiang 150001, China
| | - Yun-Fei Xia
- MIIT Key Laboratory of Critical Materials Technology for New Energy Conversion and Storage, School of Chemistry and Chemical Engineering, State Key Lab of Urban Water Resource and Environment, Harbin Institute of Technology, Harbin, Heilongjiang 150001, China
| | - Yun-Long Zhang
- MIIT Key Laboratory of Critical Materials Technology for New Energy Conversion and Storage, School of Chemistry and Chemical Engineering, State Key Lab of Urban Water Resource and Environment, Harbin Institute of Technology, Harbin, Heilongjiang 150001, China
| | - Bing Liu
- MIIT Key Laboratory of Critical Materials Technology for New Energy Conversion and Storage, School of Chemistry and Chemical Engineering, State Key Lab of Urban Water Resource and Environment, Harbin Institute of Technology, Harbin, Heilongjiang 150001, China
| | - Lei Zhao
- MIIT Key Laboratory of Critical Materials Technology for New Energy Conversion and Storage, School of Chemistry and Chemical Engineering, State Key Lab of Urban Water Resource and Environment, Harbin Institute of Technology, Harbin, Heilongjiang 150001, China.
| | - Xu-Lei Sui
- Shenzhen Key Laboratory of Special Functional Materials, Shenzhen Engineering Laboratory for Advance Technology of Ceramics, Guangdong Research Center for Interfacial Engineering of Functional Materials, College of Materials Science and Engineering, Shenzhen University, Shenzhen 518060, China.
| | - Zhen-Bo Wang
- MIIT Key Laboratory of Critical Materials Technology for New Energy Conversion and Storage, School of Chemistry and Chemical Engineering, State Key Lab of Urban Water Resource and Environment, Harbin Institute of Technology, Harbin, Heilongjiang 150001, China; Shenzhen Key Laboratory of Special Functional Materials, Shenzhen Engineering Laboratory for Advance Technology of Ceramics, Guangdong Research Center for Interfacial Engineering of Functional Materials, College of Materials Science and Engineering, Shenzhen University, Shenzhen 518060, China.
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17
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Ding X, Scieszka D, Watzele S, Xue S, Garlyyev B, Haid RW, Bandarenka AS. A Systematic Study of the Influence of Electrolyte Ions on the Electrode Activity. ChemElectroChem 2022. [DOI: 10.1002/celc.202101088] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Xing Ding
- Physics of Energy Conversion and Storage Technical University of Munich James-Franck-Strasse 1 85748 Garching Germany
| | - Daniel Scieszka
- Physics of Energy Conversion and Storage Technical University of Munich James-Franck-Strasse 1 85748 Garching Germany
| | - Sebastian Watzele
- Physics of Energy Conversion and Storage Technical University of Munich James-Franck-Strasse 1 85748 Garching Germany
| | - Song Xue
- Physics of Energy Conversion and Storage Technical University of Munich James-Franck-Strasse 1 85748 Garching Germany
| | - Batyr Garlyyev
- Physics of Energy Conversion and Storage Technical University of Munich James-Franck-Strasse 1 85748 Garching Germany
| | - Richard W. Haid
- Physics of Energy Conversion and Storage Technical University of Munich James-Franck-Strasse 1 85748 Garching Germany
| | - Aliaksandr S. Bandarenka
- Physics of Energy Conversion and Storage Technical University of Munich James-Franck-Strasse 1 85748 Garching Germany
- Catalysis Research Center TUM Technical University of Munich Ernst-Otto-Fischer-Strasse 1 85748 Garching Germany
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18
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19
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Negishi Y. Metal-nanocluster Science and Technology: My Personal History and Outlook. Phys Chem Chem Phys 2022; 24:7569-7594. [DOI: 10.1039/d1cp05689a] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Metal nanoclusters (NCs) are among the leading targets in research of nanoscale materials, and elucidation of their properties (science) and development of control techniques (technology) have been continuously studied for...
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20
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Chen G, Singh SK, Takeyasu K, Hill JP, Nakamura J, Ariga K. Versatile nanoarchitectonics of Pt with morphology control of oxygen reduction reaction catalysts. SCIENCE AND TECHNOLOGY OF ADVANCED MATERIALS 2022; 23:413-423. [PMID: 35756168 PMCID: PMC9225698 DOI: 10.1080/14686996.2022.2088040] [Citation(s) in RCA: 15] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/09/2023]
Abstract
Electro-catalytic activity of Pt in the oxygen reduction reaction (ORR) depends strongly on its morphology. For an understanding of how morphology affects the catalytic properties of Pt, the investigation of Pt materials having well-defined morphologies is required. However, the challenges remain in rational and facile synthesis of Pt particles with tuneable well-defined morphology. A promising approach for the controlled synthesis of Pt particles is 'self-assembly of building blocks'. Here, we report a unique synthesis method to control Pt morphology by using a self-assembly route, where nanoflower, nanowire, nanosheet and nanotube morphologies of Pt particles have been produced in a controlled manner. In the growth mechanism, Pt nanoparticles (5-11 nm) are rapidly prepared by using NaBH4 as a reductant, followed by their agglomeration promoted by adding 1,2-ethylenediamine. The morphology of the resulting Pt particles can be easily controlled by tuning hydrophobic/hydrophilic interactions by the addition of isopropanol and H2O. Of the Pt particles prepared using this method, Pt nanotubes show the highest ORR catalytic activity in an acid electrolyte with an onset potential of 1.02 V vs. RHE.
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Affiliation(s)
- Guoping Chen
- Graduate School of Frontier Sciences, The University of Tokyo, Kashiwa, Chiba, Japan
- International Center for Materials Nanoarchitectonics, National Institute for Materials Science, Tsukuba, Japan
| | - Santosh K. Singh
- Faculty of Pure and Applied Sciences, Tsukuba Research Centre for Energy and Materials Science, University of Tsukuba, Tsukuba, Ibaraki, Japan
| | - Kotaro Takeyasu
- Faculty of Pure and Applied Sciences, Tsukuba Research Centre for Energy and Materials Science, University of Tsukuba, Tsukuba, Ibaraki, Japan
| | - Jonathan P. Hill
- International Center for Materials Nanoarchitectonics, National Institute for Materials Science, Tsukuba, Japan
| | - Junji Nakamura
- Faculty of Pure and Applied Sciences, Tsukuba Research Centre for Energy and Materials Science, University of Tsukuba, Tsukuba, Ibaraki, Japan
- Junji Nakamura Faculty of Pure and Applied Sciences, Tsukuba Research Centre for Energy and Materials Science, University of Tsukuba, 1-1-1 Tennodai, Tsukuba, Ibaraki305-8573, Japan
| | - Katsuhiko Ariga
- Graduate School of Frontier Sciences, The University of Tokyo, Kashiwa, Chiba, Japan
- International Center for Materials Nanoarchitectonics, National Institute for Materials Science, Tsukuba, Japan
- CONTACT Katsuhiko Ariga Graduate School of Frontier Sciences, The University of Tokyo, Kashiwa, Chiba277-0827, Japan
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21
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Chen A, Lu J, Zhu H, Zhang H, Zeng S, Zheng L, Liang HP. Construction of highly durable electrocatalysts by pore-confinement and anchoring effect for oxygen reduction reaction. NEW J CHEM 2022. [DOI: 10.1039/d1nj06098h] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Developing highly stable and efficient catalysts towards the oxygen reduction reaction is important for the long-term operation in proton exchange membrane fuel cells. Herein, combined with the impregnation method, the...
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22
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Zhang M, Yang B, Yang T, Yang Y, Xiang Z. A ferric citrate derived Fe-N-C electrocatalyst with stepwise pyrolysis for highly efficient oxygen reduction reaction. CHINESE CHEM LETT 2022. [DOI: 10.1016/j.cclet.2021.06.054] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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23
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Zhang S, Jiang K, Jiang H, Zhu J, Ji H, Lu C, Zhang L, Li J, Chen Z, Ke C, Zhuang X. Pt3Fe nanoparticles triggered high catalytic performance for oxygen reduction reaction in both alkaline and acidic media. ChemElectroChem 2021. [DOI: 10.1002/celc.202101458] [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)
| | - Kaiyue Jiang
- Shanghai Jiao Tong University School of Chemistry and Chemical Engineering CHINA
| | - Haitao Jiang
- Chinese Academy of Sciences Shanghai institude of Microsystem and information Technology CHINA
| | - Jinhui Zhu
- Shanghai Jiao Tong University School of Chemistry and Chemical Engineering CHINA
| | - Huiping Ji
- Shanghai Jiao Tong University School of Chemistry and Chemical Engineering CHINA
| | - Chenbao Lu
- Shanghai Jiao Tong University School of Chemistry and Chemical Engineering dongchuan road 800 200240 Shanghai CHINA
| | - Longhai Zhang
- Shanghai Jiao Tong University School of Chemistry and Chemical Engineering CHINA
| | - Jin Li
- Henan Engineering Technology Research Center of Fuel Cell and Hydrogen Energy Zhengzhou Yutong Bus Co.Ltd CHINA
| | - Zhenying Chen
- Zhengzhou University College of Chemistry and Molecular Engineering CHINA
| | - Changchun Ke
- Shanghai Jiao Tong University School of Mechanical Engineering CHINA
| | - Xiaodong Zhuang
- Shanghai Jiao Tong University School of Chemistry and Chemical Engineering CHINA
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24
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Kawawaki T, Shimizu N, Mitomi Y, Yazaki D, Hossain S, Negishi Y. Supported, ∼1-nm-Sized Platinum Clusters: Controlled Preparation and Enhanced Catalytic Activity. BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN 2021. [DOI: 10.1246/bcsj.20210311] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Affiliation(s)
- Tokuhisa Kawawaki
- Department of Applied Chemistry, Faculty of Science, Tokyo University of Science, Kagurazaka, Shinjuku–ku, Tokyo 162–8601, Japan
- Research Institute for Science & Technology, Tokyo University of Science, Kagurazaka, Shinjuku–ku, Tokyo 162–8601, Japan
| | - Nobuyuki Shimizu
- Department of Applied Chemistry, Faculty of Science, Tokyo University of Science, Kagurazaka, Shinjuku–ku, Tokyo 162–8601, Japan
| | - Yusuke Mitomi
- Department of Applied Chemistry, Faculty of Science, Tokyo University of Science, Kagurazaka, Shinjuku–ku, Tokyo 162–8601, Japan
| | - Daichi Yazaki
- Department of Applied Chemistry, Faculty of Science, Tokyo University of Science, Kagurazaka, Shinjuku–ku, Tokyo 162–8601, Japan
| | - Sakiat Hossain
- Research Institute for Science & Technology, Tokyo University of Science, Kagurazaka, Shinjuku–ku, Tokyo 162–8601, Japan
| | - Yuichi Negishi
- Department of Applied Chemistry, Faculty of Science, Tokyo University of Science, Kagurazaka, Shinjuku–ku, Tokyo 162–8601, Japan
- Research Institute for Science & Technology, Tokyo University of Science, Kagurazaka, Shinjuku–ku, Tokyo 162–8601, Japan
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25
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Dong Y, Wang Y, Tian Z, Jiang K, Li Y, Lin Y, Oloman CW, Gyenge EL, Su J, Chen L. Enhanced catalytic performance of Pt by coupling with carbon defects. Innovation (N Y) 2021; 2:100161. [PMID: 34766097 PMCID: PMC8569720 DOI: 10.1016/j.xinn.2021.100161] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2021] [Accepted: 08/27/2021] [Indexed: 12/04/2022] Open
Abstract
Defect engineering is a promising strategy for supported catalysts to improve the catalytic activity and durability. Here, we selected the carbon (C) matrix enriched with topological defects to serve as the substrate material, in which the topological defects can act as anchoring centers to trap Pt nanoparticles for driving the O2 reduction reactions (ORRs). Both experimental characterizations and theoretical simulations revealed the strong Pt-defect interaction with enhanced charge transfer on the interface. Despite a low Pt loading, the supported catalyst can still achieve a remarkable 55 mV positive shift of half-wave potential toward ORR in O2-saturated 0.1 M HClO4 electrolyte compared with the commercial Pt catalyst on graphitized C. Moreover, the degeneration after 5,000 voltage cycles was negligible. This finding indicates that the presence of strong interaction between Pt and topological C defects can not only stabilize Pt nanoparticles but also optimize the electronic structures of Pt/C catalysts toward ORR. A novel method to obtain topologically defective porous carbon particles is proposed Pt nanoparticles are deposited on the topological carbon defects of porous carbon The interaction between Pt particles and carbon defects can adjust d-band center position Pt-DPC shows much better ORR performance than that of commercial Pt/C
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Affiliation(s)
- Yan Dong
- Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, Ningbo 315201, China.,Department of Chemical and Biological Engineering, Clean Energy Research Center (CERC), The University of British Columbia, Vancouver V6T 1Z3, Canada
| | - Yuan Wang
- Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, Ningbo 315201, China
| | - Ziqi Tian
- Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, Ningbo 315201, China.,University of Chinese Academy of Sciences, Beijing 100049, China
| | - Kemin Jiang
- Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, Ningbo 315201, China.,University of Chinese Academy of Sciences, Beijing 100049, China
| | - Yanle Li
- Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, Ningbo 315201, China.,University of Chinese Academy of Sciences, Beijing 100049, China
| | - Yichao Lin
- Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, Ningbo 315201, China.,University of Chinese Academy of Sciences, Beijing 100049, China
| | - Colin W Oloman
- Department of Chemical and Biological Engineering, Clean Energy Research Center (CERC), The University of British Columbia, Vancouver V6T 1Z3, Canada
| | - Elod L Gyenge
- Department of Chemical and Biological Engineering, Clean Energy Research Center (CERC), The University of British Columbia, Vancouver V6T 1Z3, Canada
| | - Jianwei Su
- Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, Ningbo 315201, China.,Institutes of Physical Science and Information Technology, Key Laboratory of Structure and Functional Regulation of Hybrid Materials (Ministry of Education), Anhui University, Hefei, Anhui 230601, China
| | - Liang Chen
- Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, Ningbo 315201, China.,University of Chinese Academy of Sciences, Beijing 100049, China
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26
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Li X, Fan L, Xu B, Shang Y, Li M, Zhang L, Liu S, Kang Z, Liu Z, Lu X, Sun D. Single-Atom-like B-N 3 Sites in Ordered Macroporous Carbon for Efficient Oxygen Reduction Reaction. ACS APPLIED MATERIALS & INTERFACES 2021; 13:53892-53903. [PMID: 34738781 DOI: 10.1021/acsami.1c15661] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
On the premise of cleanliness and stability, improving the catalytic efficiency for the oxygen reduction reaction in the electrode reaction of fuel cells and metal-air batteries is of vital importance. Studies have shown that heteroatom doping and structural optimization are efficient strategies. Herein, a single-atom-like B-N3 configuration in carbon is designed for efficient oxygen reduction reaction catalysis inspired by the extensively studied transition metal M-Nx sites, which is supported on the ordered macroporous carbon prepared by utilizing a hydrogen-bonded organic framework as carbon and nitrogen sources and SiO2 spheres as a template. The co-doping of B/N and ordered macroporous structures promote the metal-free material high oxygen reduction catalytic performance in alkaline media. DFT calculations reveal that the B-N3 structure played a key role in enhancing the oxygen reduction activity by providing rich favorable *OOH and *OH adsorption sites on the B center. The promoted formation of *OH/*OOH intermediates accelerated the electrocatalyst reaction. This study provides new insights into the design of single-atom-like nonmetallic ORR electrocatalysts and synthesis of ordered macroporous carbons based on hydrogen-bonded organic frameworks.
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Affiliation(s)
- Xuting Li
- School of Materials Science and Engineering, China University of Petroleum (East China), Qingdao 266580, P. R. China
| | - Lili Fan
- School of Materials Science and Engineering, China University of Petroleum (East China), Qingdao 266580, P. R. China
| | - Ben Xu
- School of Materials Science and Engineering, China University of Petroleum (East China), Qingdao 266580, P. R. China
| | - Yanxue Shang
- College of Science, China University of Petroleum (East China), Qingdao 266580, P. R. China
| | - Mengfei Li
- College of Science, China University of Petroleum (East China), Qingdao 266580, P. R. China
| | - Ling Zhang
- College of Science, China University of Petroleum (East China), Qingdao 266580, P. R. China
| | - Shuo Liu
- School of Materials Science and Engineering, China University of Petroleum (East China), Qingdao 266580, P. R. China
| | - Zixi Kang
- School of Materials Science and Engineering, China University of Petroleum (East China), Qingdao 266580, P. R. China
| | - Zhanning Liu
- School of Materials Science and Engineering, China University of Petroleum (East China), Qingdao 266580, P. R. China
| | - Xiaoqing Lu
- School of Materials Science and Engineering, China University of Petroleum (East China), Qingdao 266580, P. R. China
| | - Daofeng Sun
- School of Materials Science and Engineering, China University of Petroleum (East China), Qingdao 266580, P. R. China
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27
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Fritea L, Banica F, Costea TO, Moldovan L, Dobjanschi L, Muresan M, Cavalu S. Metal Nanoparticles and Carbon-Based Nanomaterials for Improved Performances of Electrochemical (Bio)Sensors with Biomedical Applications. MATERIALS (BASEL, SWITZERLAND) 2021; 14:6319. [PMID: 34771844 PMCID: PMC8585379 DOI: 10.3390/ma14216319] [Citation(s) in RCA: 29] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/21/2021] [Revised: 10/15/2021] [Accepted: 10/20/2021] [Indexed: 12/30/2022]
Abstract
Monitoring human health for early detection of disease conditions or health disorders is of major clinical importance for maintaining a healthy life. Sensors are small devices employed for qualitative and quantitative determination of various analytes by monitoring their properties using a certain transduction method. A "real-time" biosensor includes a biological recognition receptor (such as an antibody, enzyme, nucleic acid or whole cell) and a transducer to convert the biological binding event to a detectable signal, which is read out indicating both the presence and concentration of the analyte molecule. A wide range of specific analytes with biomedical significance at ultralow concentration can be sensitively detected. In nano(bio)sensors, nanoparticles (NPs) are incorporated into the (bio)sensor design by attachment to the suitably modified platforms. For this purpose, metal nanoparticles have many advantageous properties making them useful in the transducer component of the (bio)sensors. Gold, silver and platinum NPs have been the most popular ones, each form of these metallic NPs exhibiting special surface and interface features, which significantly improve the biocompatibility and transduction of the (bio)sensor compared to the same process in the absence of these NPs. This comprehensive review is focused on the main types of NPs used for electrochemical (bio)sensors design, especially screen-printed electrodes, with their specific medical application due to their improved analytical performances and miniaturized form. Other advantages such as supporting real-time decision and rapid manipulation are pointed out. A special attention is paid to carbon-based nanomaterials (especially carbon nanotubes and graphene), used by themselves or decorated with metal nanoparticles, with excellent features such as high surface area, excellent conductivity, effective catalytic properties and biocompatibility, which confer to these hybrid nanocomposites a wide biomedical applicability.
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Affiliation(s)
- Luminita Fritea
- Faculty of Medicine and Pharmacy, University of Oradea, 10 P-ta 1 Decembrie, 410087 Oradea, Romania; (L.F.); (F.B.); (M.M.); (S.C.)
| | - Florin Banica
- Faculty of Medicine and Pharmacy, University of Oradea, 10 P-ta 1 Decembrie, 410087 Oradea, Romania; (L.F.); (F.B.); (M.M.); (S.C.)
| | - Traian Octavian Costea
- Advanced Materials Research Infrastructure—SMARTMAT, University of Oradea, 1 Universitatii Street, 410087 Oradea, Romania;
| | - Liviu Moldovan
- Faculty of Electrical Engineering and Information Technology, University of Oradea, 1 Universitatii Street, 410087 Oradea, Romania
| | - Luciana Dobjanschi
- Faculty of Medicine and Pharmacy, University of Oradea, 10 P-ta 1 Decembrie, 410087 Oradea, Romania; (L.F.); (F.B.); (M.M.); (S.C.)
| | - Mariana Muresan
- Faculty of Medicine and Pharmacy, University of Oradea, 10 P-ta 1 Decembrie, 410087 Oradea, Romania; (L.F.); (F.B.); (M.M.); (S.C.)
| | - Simona Cavalu
- Faculty of Medicine and Pharmacy, University of Oradea, 10 P-ta 1 Decembrie, 410087 Oradea, Romania; (L.F.); (F.B.); (M.M.); (S.C.)
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28
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Eslamibidgoli MJ, Tipp FP, Jitsev J, Jankovic J, Eikerling MH, Malek K. Convolutional neural networks for high throughput screening of catalyst layer inks for polymer electrolyte fuel cells. RSC Adv 2021; 11:32126-32134. [PMID: 35495497 PMCID: PMC9041760 DOI: 10.1039/d1ra05324h] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2021] [Accepted: 09/21/2021] [Indexed: 11/21/2022] Open
Abstract
The performance of polymer electrolyte fuel cells decisively depends on the structure and processes in membrane electrode assemblies and their components, particularly the catalyst layers. The structural building blocks of catalyst layers are formed during the processing and application of catalyst inks. Accelerating the structural characterization at the ink stage is thus crucial to expedite further advances in catalyst layer design and fabrication. In this context, deep learning algorithms based on deep convolutional neural networks (ConvNets) can automate the processing of the complex and multi-scale structural features of ink imaging data. This article presents the first application of ConvNets for the high throughput screening of transmission electron microscopy images at the ink stage. Results indicate the importance of model pre-training and data augmentation that works on multiple scales in training robust and accurate classification pipelines. Deep learning enables the robust and accurate classification of the TEM images of catalyst layer inks for the polymer electrolyte fuel cells.![]()
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Affiliation(s)
- Mohammad J Eslamibidgoli
- Theory and Computation of Energy Materials (IEK-13), Institute of Energy and Climate Research, Forschungszentrum Jülich GmbH 52425 Jülich Germany
| | - Fabian P Tipp
- Department of Chemistry, University of Cologne Greinstr. 4-6 50939 Cologne Germany
| | - Jenia Jitsev
- Julich Supercomputing Center, Forschungszentrum Jülich 52425 Jülich Germany
| | - Jasna Jankovic
- Department of Materials Science and Engineering, University of Connecticut 97 North Eagleville Road, Unit 3136 Storrs CT 06269-3136 USA
| | - Michael H Eikerling
- Theory and Computation of Energy Materials (IEK-13), Institute of Energy and Climate Research, Forschungszentrum Jülich GmbH 52425 Jülich Germany .,Chair of Theory and Computation of Energy Materials, Faculty of Georesources and Materials Engineering, RWTH Aachen University Aachen 52062 Germany
| | - Kourosh Malek
- Theory and Computation of Energy Materials (IEK-13), Institute of Energy and Climate Research, Forschungszentrum Jülich GmbH 52425 Jülich Germany
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29
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Kawawaki T, Shimizu N, Funai K, Mitomi Y, Hossain S, Kikkawa S, Osborn DJ, Yamazoe S, Metha GF, Negishi Y. Simple and high-yield preparation of carbon-black-supported ∼1 nm platinum nanoclusters and their oxygen reduction reactivity. NANOSCALE 2021; 13:14679-14687. [PMID: 34558590 DOI: 10.1039/d1nr04202e] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
The improvement of oxygen reduction reaction (ORR) catalysts is essential before polymer electrolyte fuel cells can be used widely. To this end, we established a simple method for the size-selective synthesis of a series of ligand-protected platinum nanoclusters with ∼1 nm particle size (Ptn NCs; n = ∼35, ∼51, and ∼66) and narrow size distribution (±∼4 Pt atoms) under atmospheric conditions. Using this method, each ligand-protected ∼1 nm Pt NC was obtained in a relatively high yield (nearly 80% for Pt∼66). We succeeded in adsorbing each ligand-protected ∼1 nm Pt NC on carbon black (CB) and then removing most of the ligands from the surface of the Pt NCs via calcination while maintaining the original size. The obtained Pt∼35/CB, Pt∼51/CB, and Pt∼66/CB exhibited ORR mass activities that were 1.6, 2.1, and 1.6 times higher, respectively, than that of commercial CB supported-Pt nanoparticles, and also display high durability.
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Affiliation(s)
- Tokuhisa Kawawaki
- Department of Applied Chemistry, Faculty of Science, Tokyo University of Science, Kagurazaka, Shinjuku-ku, Tokyo 162-8601, Japan.
| | - Nobuyuki Shimizu
- Department of Applied Chemistry, Faculty of Science, Tokyo University of Science, Kagurazaka, Shinjuku-ku, Tokyo 162-8601, Japan.
| | - Kanako Funai
- Department of Applied Chemistry, Faculty of Science, Tokyo University of Science, Kagurazaka, Shinjuku-ku, Tokyo 162-8601, Japan.
| | - Yusuke Mitomi
- Department of Applied Chemistry, Faculty of Science, Tokyo University of Science, Kagurazaka, Shinjuku-ku, Tokyo 162-8601, Japan.
| | - Sakiat Hossain
- Department of Applied Chemistry, Faculty of Science, Tokyo University of Science, Kagurazaka, Shinjuku-ku, Tokyo 162-8601, Japan.
| | - Soichi Kikkawa
- Department of Chemistry, Graduate School of Science, Tokyo Metropolitan University, 1-1 Minami-Osawa, Hachioji-shi, Tokyo 192-0397, Japan
| | - D J Osborn
- Department of Chemistry, University of Adelaide, Adelaide, South Australia 5005, Australia
| | - Seiji Yamazoe
- Department of Chemistry, Graduate School of Science, Tokyo Metropolitan University, 1-1 Minami-Osawa, Hachioji-shi, Tokyo 192-0397, Japan
| | - Gregory F Metha
- Department of Chemistry, University of Adelaide, Adelaide, South Australia 5005, Australia
| | - Yuichi Negishi
- Department of Applied Chemistry, Faculty of Science, Tokyo University of Science, Kagurazaka, Shinjuku-ku, Tokyo 162-8601, Japan.
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30
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Hou S, Kluge RM, Haid RW, Gubanova EL, Watzele SA, Bandarenka AS, Garlyyev B. A Review on Experimental Identification of Active Sites in Model Bifunctional Electrocatalytic Systems for Oxygen Reduction and Evolution Reactions. ChemElectroChem 2021. [DOI: 10.1002/celc.202100584] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Shujin Hou
- Physics of Energy Conversion and Storage Physik-Department Technische Universität München James-Franck-Str. 1 85748 Garching bei München Germany
- Catalysis Research Center TUM Ernst-Otto-Fischer-Str. 1 85748 Garching bei München Germany
| | - Regina M. Kluge
- Physics of Energy Conversion and Storage Physik-Department Technische Universität München James-Franck-Str. 1 85748 Garching bei München Germany
| | - Richard W. Haid
- Physics of Energy Conversion and Storage Physik-Department Technische Universität München James-Franck-Str. 1 85748 Garching bei München Germany
| | - Elena L. Gubanova
- Physics of Energy Conversion and Storage Physik-Department Technische Universität München James-Franck-Str. 1 85748 Garching bei München Germany
| | - Sebastian A. Watzele
- Physics of Energy Conversion and Storage Physik-Department Technische Universität München James-Franck-Str. 1 85748 Garching bei München Germany
| | - Aliaksandr S. Bandarenka
- Physics of Energy Conversion and Storage Physik-Department Technische Universität München James-Franck-Str. 1 85748 Garching bei München Germany
- Catalysis Research Center TUM Ernst-Otto-Fischer-Str. 1 85748 Garching bei München Germany
| | - Batyr Garlyyev
- Physics of Energy Conversion and Storage Physik-Department Technische Universität München James-Franck-Str. 1 85748 Garching bei München Germany
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31
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Wang H, Chen J, Lin Y, Wang X, Li J, Li Y, Gao L, Zhang L, Chao D, Xiao X, Lee JM. Electronic Modulation of Non-van der Waals 2D Electrocatalysts for Efficient Energy Conversion. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2021; 33:e2008422. [PMID: 34032317 DOI: 10.1002/adma.202008422] [Citation(s) in RCA: 79] [Impact Index Per Article: 26.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/14/2020] [Revised: 02/02/2021] [Indexed: 06/12/2023]
Abstract
The exploration of efficient electrocatalysts for energy conversion is important for green energy development. Owing to their high surface areas and unusual electronic structure, 2D electrocatalysts have attracted increasing interest. Among them, non-van der Waals (non-vdW) 2D materials with numerous chemical bonds in all three dimensions and novel chemical and electronic properties beyond those of vdW 2D materials have been studied increasingly over the past decades. Herein, the progress of non-vdW 2D electrocatalysts is critically reviewed, with a special emphasis on electronic structure modulation. Strategies for heteroatom doping, vacancy engineering, pore creation, alloying, and heterostructure engineering are analyzed for tuning electronic structures and achieving intrinsically enhanced electrocatalytic performances. Lastly, a roadmap for the future development of non-vdW 2D electrocatalysts is provided from material, mechanism, and performance viewpoints.
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Affiliation(s)
- Hao Wang
- School of Chemical and Biomedical Engineering, Nanyang Technological University, Singapore, 637459, Singapore
- State Key Laboratory of Electronic Thin Film and Integrated Devices, School of Electronic Science and Engineering, University of Electronic Science and Technology of China, Chengdu, Sichuan, 610054, China
- Research Institute of Superconductor Electronics, Nanjing University, Nanjing, 210023, China
| | - Jianmei Chen
- Institute of Functional Nano and Soft Materials (FUNSOM), Jiangsu Key Laboratory for Carbon-Based Functional Materials & Devices, Soochow University, Suzhou, 215123, China
| | - Yanping Lin
- Soochow Institute for Energy and Materials Innovations, College of Energy, Soochow University, Suzhou, 215006, China
| | - Xiaohan Wang
- Research Institute of Superconductor Electronics, Nanjing University, Nanjing, 210023, China
| | - Jianmin Li
- State Key Laboratory of Electronic Thin Film and Integrated Devices, School of Electronic Science and Engineering, University of Electronic Science and Technology of China, Chengdu, Sichuan, 610054, China
| | - Yao Li
- State Key Laboratory of Electronic Thin Film and Integrated Devices, School of Electronic Science and Engineering, University of Electronic Science and Technology of China, Chengdu, Sichuan, 610054, China
| | - Lijun Gao
- Soochow Institute for Energy and Materials Innovations, College of Energy, Soochow University, Suzhou, 215006, China
| | - Labao Zhang
- Research Institute of Superconductor Electronics, Nanjing University, Nanjing, 210023, China
| | - Dongliang Chao
- Laboratory of Advanced Materials, Fudan University, Shanghai, 200433, China
| | - Xu Xiao
- State Key Laboratory of Electronic Thin Film and Integrated Devices, School of Electronic Science and Engineering, University of Electronic Science and Technology of China, Chengdu, Sichuan, 610054, China
| | - Jong-Min Lee
- School of Chemical and Biomedical Engineering, Nanyang Technological University, Singapore, 637459, Singapore
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32
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Paperzh KO, Alekseenko AA, Volochaev VA, Pankov IV, Safronenko OA, Guterman VE. Stability and activity of platinum nanoparticles in the oxygen electroreduction reaction: is size or uniformity of primary importance? BEILSTEIN JOURNAL OF NANOTECHNOLOGY 2021; 12:593-606. [PMID: 34285863 PMCID: PMC8261527 DOI: 10.3762/bjnano.12.49] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 03/19/2021] [Accepted: 06/16/2021] [Indexed: 06/13/2023]
Abstract
Platinum-carbon catalysts are widely used in the manufacturing of proton-exchange membrane fuel cells. Increasing Pt/C activity and stability is an urgent task and the optimization of their structure seems to be one of the possible solutions. In the present paper, Pt/C electrocatalysts containing small (2-2.6 nm) nanoparticles (NPs) of a similar size, uniformly distributed over the surface of a carbon support, were obtained by the original method of liquid-phase synthesis. A comparative study of the structural characteristics, catalytic activity in the oxygen electroreduction reaction (ORR), and durability of the synthesized catalysts, as well as their commercial analogs, was carried out. It was shown that the uniformity of the structural and morphological characteristics of Pt/C catalysts makes it possible to reduce the negative effect of the small size of NPs on their stability. As a result, the obtained catalysts were significantly superior to their commercial analogs regarding ORR activity, but not inferior to them in terms of stability.
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Affiliation(s)
- Kirill O Paperzh
- Southern Federal University, Faculty of Chemistry, 344090, Zorge st. 7, Rostov-on-Don, Russia
- Prometheus R&D LLC, 344091, 4g/36 Zhmaylova st., Rostov-on-Don, Russia
| | - Anastasia A Alekseenko
- Southern Federal University, Faculty of Chemistry, 344090, Zorge st. 7, Rostov-on-Don, Russia
| | - Vadim A Volochaev
- Southern Federal University, "High-Resolution Transmission Electron Microscopy” Shared Use Center, 344090, 194/2 Stachki st., Rostov-on-Don, Russia
| | - Ilya V Pankov
- Southern Federal University, "High-Resolution Transmission Electron Microscopy” Shared Use Center, 344090, 194/2 Stachki st., Rostov-on-Don, Russia
| | - Olga A Safronenko
- Southern Federal University, Faculty of Chemistry, 344090, Zorge st. 7, Rostov-on-Don, Russia
| | - Vladimir E Guterman
- Southern Federal University, Faculty of Chemistry, 344090, Zorge st. 7, Rostov-on-Don, Russia
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33
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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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34
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Choi HK, Lee MJ, Lee SN, Kim TH, Oh BK. Noble Metal Nanomaterial-Based Biosensors for Electrochemical and Optical Detection of Viruses Causing Respiratory Illnesses. Front Chem 2021; 9:672739. [PMID: 34055741 PMCID: PMC8158574 DOI: 10.3389/fchem.2021.672739] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2021] [Accepted: 04/12/2021] [Indexed: 11/13/2022] Open
Abstract
Noble metal nanomaterials, such as gold, silver, and platinum, have been studied extensively in broad scientific fields because of their unique properties, including superior conductivity, plasmonic property, and biocompatibility. Due to their unique properties, researchers have used them to fabricate biosensors. Recently, biosensors for detecting respiratory illness-inducing viruses have gained attention after the global outbreak of coronavirus disease (COVID-19). In this mini-review, we discuss noble metal nanomaterials and associated biosensors for detecting respiratory illness-causing viruses, including SARS-CoV-2, using electrochemical and optical detection techniques. this review will provide interdisciplinary knowledge about the application of noble metal nanomaterials to the biomedical field.
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Affiliation(s)
- Hye Kyu Choi
- Department of Chemical and Biomolecular Engineering, Sogang University, Seoul, South Korea
| | - Myeong-Jun Lee
- Department of Chemical and Biomolecular Engineering, Sogang University, Seoul, South Korea
| | | | - Tae-Hyung Kim
- School Integrative Engineering, Chung-Ang University, Seoul, South Korea
| | - Byung-Keun Oh
- Department of Chemical and Biomolecular Engineering, Sogang University, Seoul, South Korea
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35
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Chen L, Azeem S, Ruan M, Xu W, Barck A, Kornowski A, Parak WJ, Chakraborty I. Rapid template‐guided ligand‐free synthesis of ultrasmall Pt nanoclusters with efficient hydrogen evolution reaction activity and their versatile release. NANO SELECT 2021. [DOI: 10.1002/nano.202000225] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Affiliation(s)
- Lizhen Chen
- Fachbereich Physik Center for Hybrid Nanostructures (CHyN) Universität Hamburg Hamburg Germany
| | - Shoaib Azeem
- Fachbereich Physik Philipps Universität Marburg Marburg Germany
| | - Mingbo Ruan
- State Key Laboratory of Electroanalytical Chemistry, and Jilin Province Key Laboratory of Low Carbon Chemical Power Changchun Institute of Applied Chemistry Chinese Academy of Science Changchun P. R. China
| | - Weilin Xu
- State Key Laboratory of Electroanalytical Chemistry, and Jilin Province Key Laboratory of Low Carbon Chemical Power Changchun Institute of Applied Chemistry Chinese Academy of Science Changchun P. R. China
| | - Almut Barck
- Fachbereich Chemie Universität Hamburg Hamburg Germany
| | | | - Wolfgang J. Parak
- Fachbereich Physik Center for Hybrid Nanostructures (CHyN) Universität Hamburg Hamburg Germany
- Fachbereich Chemie Universität Hamburg Hamburg Germany
- CIC Biomagune San Sebastian Spain
| | - Indranath Chakraborty
- Fachbereich Physik Center for Hybrid Nanostructures (CHyN) Universität Hamburg Hamburg Germany
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36
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Li X, Golz C, Alcarazo M. α-Diazo Sulfonium Triflates: Synthesis, Structure, and Application to the Synthesis of 1-(Dialkylamino)-1,2,3-triazoles. Angew Chem Int Ed Engl 2021; 60:6943-6948. [PMID: 33351262 PMCID: PMC8048477 DOI: 10.1002/anie.202014775] [Citation(s) in RCA: 35] [Impact Index Per Article: 11.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2020] [Revised: 12/13/2020] [Indexed: 01/03/2023]
Abstract
The one-pot synthesis of a series of sulfonium salts containing transferable diazomethyl groups is described, and the structure of these compounds is elucidated by X-ray crystallography. Under photochemical conditions, reaction of these salts with N,N-dialkyl hydrazones affords 1-(dialkylamino)-1,2,3-triazoles via diazomethyl radical addition to the azomethine carbon followed by intramolecular ring closure. The straightforward transformation of the structures thus obtained into mesoionic carbene-metal complexes is also reported and the donor properties of these new ligands characterized.
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Affiliation(s)
- Xiangdong Li
- Institut für Organische und Biomolekulare ChemieGeorg-August-Universität GöttingenTammannstr. 237077GöttingenGermany
| | - Christopher Golz
- Institut für Organische und Biomolekulare ChemieGeorg-August-Universität GöttingenTammannstr. 237077GöttingenGermany
| | - Manuel Alcarazo
- Institut für Organische und Biomolekulare ChemieGeorg-August-Universität GöttingenTammannstr. 237077GöttingenGermany
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37
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Hu Y, Zhu M, Luo X, Wu G, Chao T, Qu Y, Zhou F, Sun R, Han X, Li H, Jiang B, Wu Y, Hong X. Coplanar Pt/C Nanomeshes with Ultrastable Oxygen Reduction Performance in Fuel Cells. Angew Chem Int Ed Engl 2021; 60:6533-6538. [DOI: 10.1002/anie.202014857] [Citation(s) in RCA: 35] [Impact Index Per Article: 11.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2020] [Revised: 12/10/2020] [Indexed: 11/11/2022]
Affiliation(s)
- Yanmin Hu
- Center of Advanced Nanocatalysis (CAN) Department of Applied Chemistry Hefei National Laboratory for Physical Sciences at the Microscale University of Science and Technology of China Hefei Anhui 230026 China
| | - Mengzhao Zhu
- Center of Advanced Nanocatalysis (CAN) Department of Applied Chemistry Hefei National Laboratory for Physical Sciences at the Microscale University of Science and Technology of China Hefei Anhui 230026 China
| | - Xuan Luo
- Department of Chemical Physics University of Science and Technology of China Hefei Anhui 230026 China
| | - Geng Wu
- Center of Advanced Nanocatalysis (CAN) Department of Applied Chemistry Hefei National Laboratory for Physical Sciences at the Microscale University of Science and Technology of China Hefei Anhui 230026 China
| | - Tingting Chao
- Center of Advanced Nanocatalysis (CAN) Department of Applied Chemistry Hefei National Laboratory for Physical Sciences at the Microscale University of Science and Technology of China Hefei Anhui 230026 China
| | - Yunteng Qu
- Center of Advanced Nanocatalysis (CAN) Department of Applied Chemistry Hefei National Laboratory for Physical Sciences at the Microscale University of Science and Technology of China Hefei Anhui 230026 China
| | - Fangyao Zhou
- Center of Advanced Nanocatalysis (CAN) Department of Applied Chemistry Hefei National Laboratory for Physical Sciences at the Microscale University of Science and Technology of China Hefei Anhui 230026 China
| | - Rongbo Sun
- Center of Advanced Nanocatalysis (CAN) Department of Applied Chemistry Hefei National Laboratory for Physical Sciences at the Microscale University of Science and Technology of China Hefei Anhui 230026 China
| | - Xiao Han
- Center of Advanced Nanocatalysis (CAN) Department of Applied Chemistry Hefei National Laboratory for Physical Sciences at the Microscale University of Science and Technology of China Hefei Anhui 230026 China
| | - Hai Li
- Key Laboratory of Flexible Electronics (KLOFE) & Institute of Advanced Materials(IAM) Jiangsu National Synergetic Innovation Center for Advanced Materials (SICAM) Nanjing Technology University Nanjing Jiangsu 211816 China
| | - Bin Jiang
- Department of Chemical Physics University of Science and Technology of China Hefei Anhui 230026 China
| | - Yuen Wu
- Center of Advanced Nanocatalysis (CAN) Department of Applied Chemistry Hefei National Laboratory for Physical Sciences at the Microscale University of Science and Technology of China Hefei Anhui 230026 China
| | - Xun Hong
- Center of Advanced Nanocatalysis (CAN) Department of Applied Chemistry Hefei National Laboratory for Physical Sciences at the Microscale University of Science and Technology of China Hefei Anhui 230026 China
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38
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Hu Y, Zhu M, Luo X, Wu G, Chao T, Qu Y, Zhou F, Sun R, Han X, Li H, Jiang B, Wu Y, Hong X. Coplanar Pt/C Nanomeshes with Ultrastable Oxygen Reduction Performance in Fuel Cells. Angew Chem Int Ed Engl 2021. [DOI: 10.1002/ange.202014857] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Affiliation(s)
- Yanmin Hu
- Center of Advanced Nanocatalysis (CAN) Department of Applied Chemistry Hefei National Laboratory for Physical Sciences at the Microscale University of Science and Technology of China Hefei Anhui 230026 China
| | - Mengzhao Zhu
- Center of Advanced Nanocatalysis (CAN) Department of Applied Chemistry Hefei National Laboratory for Physical Sciences at the Microscale University of Science and Technology of China Hefei Anhui 230026 China
| | - Xuan Luo
- Department of Chemical Physics University of Science and Technology of China Hefei Anhui 230026 China
| | - Geng Wu
- Center of Advanced Nanocatalysis (CAN) Department of Applied Chemistry Hefei National Laboratory for Physical Sciences at the Microscale University of Science and Technology of China Hefei Anhui 230026 China
| | - Tingting Chao
- Center of Advanced Nanocatalysis (CAN) Department of Applied Chemistry Hefei National Laboratory for Physical Sciences at the Microscale University of Science and Technology of China Hefei Anhui 230026 China
| | - Yunteng Qu
- Center of Advanced Nanocatalysis (CAN) Department of Applied Chemistry Hefei National Laboratory for Physical Sciences at the Microscale University of Science and Technology of China Hefei Anhui 230026 China
| | - Fangyao Zhou
- Center of Advanced Nanocatalysis (CAN) Department of Applied Chemistry Hefei National Laboratory for Physical Sciences at the Microscale University of Science and Technology of China Hefei Anhui 230026 China
| | - Rongbo Sun
- Center of Advanced Nanocatalysis (CAN) Department of Applied Chemistry Hefei National Laboratory for Physical Sciences at the Microscale University of Science and Technology of China Hefei Anhui 230026 China
| | - Xiao Han
- Center of Advanced Nanocatalysis (CAN) Department of Applied Chemistry Hefei National Laboratory for Physical Sciences at the Microscale University of Science and Technology of China Hefei Anhui 230026 China
| | - Hai Li
- Key Laboratory of Flexible Electronics (KLOFE) & Institute of Advanced Materials(IAM) Jiangsu National Synergetic Innovation Center for Advanced Materials (SICAM) Nanjing Technology University Nanjing Jiangsu 211816 China
| | - Bin Jiang
- Department of Chemical Physics University of Science and Technology of China Hefei Anhui 230026 China
| | - Yuen Wu
- Center of Advanced Nanocatalysis (CAN) Department of Applied Chemistry Hefei National Laboratory for Physical Sciences at the Microscale University of Science and Technology of China Hefei Anhui 230026 China
| | - Xun Hong
- Center of Advanced Nanocatalysis (CAN) Department of Applied Chemistry Hefei National Laboratory for Physical Sciences at the Microscale University of Science and Technology of China Hefei Anhui 230026 China
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39
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Ohma A, Furuya Y, Mashio T, Ito M, Nomura K, Nagao T, Nishihara H, Jinnai H, Kyotani T. Elucidation of oxygen reduction reaction and nanostructure of platinum-loaded graphene mesosponge for polymer electrolyte fuel cell electrocatalyst. Electrochim Acta 2021. [DOI: 10.1016/j.electacta.2020.137705] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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40
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Kodama K, Nagai T, Kuwaki A, Jinnouchi R, Morimoto Y. Challenges in applying highly active Pt-based nanostructured catalysts for oxygen reduction reactions to fuel cell vehicles. NATURE NANOTECHNOLOGY 2021; 16:140-147. [PMID: 33479539 DOI: 10.1038/s41565-020-00824-w] [Citation(s) in RCA: 171] [Impact Index Per Article: 57.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/02/2020] [Accepted: 11/25/2020] [Indexed: 06/12/2023]
Abstract
The past 30 years have seen progress in the development of Pt-based nanocatalysts for the oxygen reduction reaction, and some are now in production on a commercial basis and used for polymer electrolyte fuel cells (PEFCs) for automotives and other applications. Further improvements in catalytic activity are required for wider uptake of PEFCs, however. In laboratories, researchers have developed various catalysts that have much higher activities than commercial ones, and these state-of-the-art catalysts have potential to improve energy conversion efficiencies and reduce the usage of platinum in PEFCs. There are several technical issues that must be solved before they can be applied in fuel cell vehicles, which require a high power density and practical durability, as well as high efficiency. In this Review, the development history of Pt-based nanocatalysts and recent analytical studies are summarized to identify the origin of these technical issues. Promising strategies for overcoming those issues are also discussed.
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41
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Stanley PM, Thomas C, Thyrhaug E, Urstoeger A, Schuster M, Hauer J, Rieger B, Warnan J, Fischer RA. Entrapped Molecular Photocatalyst and Photosensitizer in Metal–Organic Framework Nanoreactors for Enhanced Solar CO2 Reduction. ACS Catal 2021. [DOI: 10.1021/acscatal.0c04673] [Citation(s) in RCA: 37] [Impact Index Per Article: 12.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Affiliation(s)
- Philip M. Stanley
- Chair of Inorganic and Metal-Organic Chemistry, Department of Chemistry and Catalysis Research Center, Technical University of Munich, Lichtenbergstraße 4, Garching 85787, Germany
- WACKER-Chair of Macromolecular Chemistry, Department of Chemistry and Catalysis Research Center, Technical University of Munich, Lichtenbergstraße 4, Garching 85787, Germany
| | - Christopher Thomas
- WACKER-Chair of Macromolecular Chemistry, Department of Chemistry and Catalysis Research Center, Technical University of Munich, Lichtenbergstraße 4, Garching 85787, Germany
| | - Erling Thyrhaug
- Associate Professorship of Dynamic Spectroscopy, Department of Chemistry, Technical University of Munich, Lichtenbergstraße 4, Garching 85787, Germany
| | - Alexander Urstoeger
- Division of Analytical Chemistry, Department of Chemistry, Technical University of Munich, Lichtenbergstraße 4, Garching 85787, Germany
| | - Michael Schuster
- Division of Analytical Chemistry, Department of Chemistry, Technical University of Munich, Lichtenbergstraße 4, Garching 85787, Germany
| | - Jürgen Hauer
- Associate Professorship of Dynamic Spectroscopy, Department of Chemistry, Technical University of Munich, Lichtenbergstraße 4, Garching 85787, Germany
| | - Bernhard Rieger
- WACKER-Chair of Macromolecular Chemistry, Department of Chemistry and Catalysis Research Center, Technical University of Munich, Lichtenbergstraße 4, Garching 85787, Germany
| | - Julien Warnan
- Chair of Inorganic and Metal-Organic Chemistry, Department of Chemistry and Catalysis Research Center, Technical University of Munich, Lichtenbergstraße 4, Garching 85787, Germany
| | - Roland A. Fischer
- Chair of Inorganic and Metal-Organic Chemistry, Department of Chemistry and Catalysis Research Center, Technical University of Munich, Lichtenbergstraße 4, Garching 85787, Germany
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42
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Fracchia M, Ghigna P, Marelli M, Scavini M, Vertova A, Rondinini S, Della Pergola R, Minguzzi A. Molecular cluster route for the facile synthesis of a stable and active Pt nanoparticle catalyst. NEW J CHEM 2021. [DOI: 10.1039/d1nj00937k] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Molecular platinum clusters can be used for the synthesis of very small (ca. 1.5 nm) Pt nanoparticles with enhanced catalytic activity and stability towards the oxygen reduction reaction. The Pt–C interactions were characterized by TEM and EXAFS.
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Affiliation(s)
- Martina Fracchia
- Dipartimento di Chimica
- Università degli Studi di Pavia
- 27100 Pavia
- Italy
| | - Paolo Ghigna
- Dipartimento di Chimica
- Università degli Studi di Pavia
- 27100 Pavia
- Italy
- INSTM Consorzio Interuniversitario Nazionale per la Scienza e Tecnologia dei Materiali
| | - Marcello Marelli
- CNR-SCITEC Istituto di Scienze e Tecnologie Chimiche “G. Natta”
- 20138 Milano
- Italy
| | - Marco Scavini
- INSTM Consorzio Interuniversitario Nazionale per la Scienza e Tecnologia dei Materiali
- 50121 Firenze
- Italy
- Dipartimento di Chimica
- Università degli Studi di Milano
| | - Alberto Vertova
- INSTM Consorzio Interuniversitario Nazionale per la Scienza e Tecnologia dei Materiali
- 50121 Firenze
- Italy
- Dipartimento di Chimica
- Università degli Studi di Milano
| | - Sandra Rondinini
- INSTM Consorzio Interuniversitario Nazionale per la Scienza e Tecnologia dei Materiali
- 50121 Firenze
- Italy
- Dipartimento di Chimica
- Università degli Studi di Milano
| | - Roberto Della Pergola
- Dipartimento di Scienze dell’Ambiente e della Terra
- Università di Milano-Bicocca
- 20126 Milano
- Italy
| | - Alessandro Minguzzi
- INSTM Consorzio Interuniversitario Nazionale per la Scienza e Tecnologia dei Materiali
- 50121 Firenze
- Italy
- Dipartimento di Chimica
- Università degli Studi di Milano
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43
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Li M, Fan L, Xiao Z, Zhang L, Wang Z, Kang Z, Guo H, Dai F, Lu X, Sun D. Micelles of Mesoporous Silica with Inserted Iron Complexes as a Platform for Constructing Efficient Electrocatalysts for Oxygen Reduction. ACS APPLIED MATERIALS & INTERFACES 2020; 12:54720-54731. [PMID: 33232601 DOI: 10.1021/acsami.0c16382] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Iron, N-codoped carbon materials (Fe-N-C) are promising electrocatalysts toward oxygen reduction reactions due to their high atom utilization efficiency and intrinsic activity. Nanostructuring of the Fe-N-C materials, such as introducing porosity into the carbon structure, would be conducive to further increasing the exposure of active sites as well as improving the mass transfer. Herein, we explore the potential of iron complex-functionalized micelles of mesoporous SiO2 as a platform for constructing porous Fe-N-C materials. The classical three-dimensional MCM-48 was selected as a proof-of-concept example, which was utilized as the hard template, and cetyltrimethylammonium bromide micelles inside it played the role of the main carbon source. Fe-Nx sites were derived from Fe-1,10-phenanthroline complexes in the micelles introduced by in situ incorporation of 1,10-phenanthroline and post Fe2+ insertion in an aqueous solution. After thermal annealing in a nitrogen atmosphere and subsequent removal of the MCM-48 framework, a carbon material that possesses porous structural features with uniformly dispersed Fe-Nx sites (MPC@PhFe) was obtained, which shows superior ORR activity in a 0.1 M KOH solution and great potential for Zn-air battery applications as well. This work demonstrates the feasibility as well as the effectiveness of turning micelles of mesoporous SiO2 into porous carbon structures and might offer a universal strategy for manufacturing carbon materials for future application in energy storage and conversion.
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Affiliation(s)
- Mengfei Li
- School of Materials Science and Engineering, College of Science, China University of Petroleum (East China), Qingdao 266580, P. R. China
| | - Lili Fan
- School of Materials Science and Engineering, College of Science, China University of Petroleum (East China), Qingdao 266580, P. R. China
| | - Zuoxu Xiao
- School of Materials Science and Engineering, College of Science, China University of Petroleum (East China), Qingdao 266580, P. R. China
| | - Ling Zhang
- School of Materials Science and Engineering, College of Science, China University of Petroleum (East China), Qingdao 266580, P. R. China
| | - Zhikun Wang
- School of Materials Science and Engineering, College of Science, China University of Petroleum (East China), Qingdao 266580, P. R. China
| | - Zixi Kang
- School of Materials Science and Engineering, College of Science, China University of Petroleum (East China), Qingdao 266580, P. R. China
| | - Hailing Guo
- State Key Laboratory of Heavy Oil Processing, Key Laboratory of Catalysis, China National Petroleum Corp. (CNPC), China University of Petroleum (East China), Qingdao 266580, P. R. China
| | - Fangna Dai
- School of Materials Science and Engineering, College of Science, China University of Petroleum (East China), Qingdao 266580, P. R. China
| | - Xiaoqing Lu
- School of Materials Science and Engineering, College of Science, China University of Petroleum (East China), Qingdao 266580, P. R. China
| | - Daofeng Sun
- School of Materials Science and Engineering, College of Science, China University of Petroleum (East China), Qingdao 266580, P. R. China
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44
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Sebastián-Pascual P, Jordão Pereira I, Escudero-Escribano M. Tailored electrocatalysts by controlled electrochemical deposition and surface nanostructuring. Chem Commun (Camb) 2020; 56:13261-13272. [PMID: 33104137 DOI: 10.1039/d0cc06099b] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Controlled electrodeposition and surface nanostructuring are very promising approaches to tailor the structure of the electrocatalyst surface, with the aim to enhance their efficiency for sustainable energy conversion reactions. In this highlight, we first summarise different strategies to modify the structure of the electrode surface at the atomic and sub-monolayer level for applications in electrocatalysis. We discuss aspects such as structure sensitivity and electronic and geometric effects in electrocatalysis. Nanostructured surfaces are finally introduced as more scalable electrocatalysts, where morphology, cluster size, shape and distribution play an essential role and can be finely tuned. Controlled electrochemical deposition and selective engineering of the surface structure are key to design more active, selective and stable electrocatalysts towards a decarbonised energy scheme.
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Affiliation(s)
- Paula Sebastián-Pascual
- Department of Chemistry, University of Copenhagen, Universitetsparken 5, 2100 Copenhagen, Denmark.
| | - Inês Jordão Pereira
- Department of Chemistry, University of Copenhagen, Universitetsparken 5, 2100 Copenhagen, Denmark.
| | - María Escudero-Escribano
- Department of Chemistry, University of Copenhagen, Universitetsparken 5, 2100 Copenhagen, Denmark.
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45
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Spadaro M, Humphrey JJL, Cai R, Martínez L, Haigh SJ, Huttel Y, Spencer SJ, Wain AJ, Palmer R. Electrocatalytic Behavior of PtCu Clusters Produced by Nanoparticle Beam Deposition. THE JOURNAL OF PHYSICAL CHEMISTRY. C, NANOMATERIALS AND INTERFACES 2020; 124:23683-23689. [PMID: 33154785 PMCID: PMC7604936 DOI: 10.1021/acs.jpcc.0c06744] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/23/2020] [Revised: 10/03/2020] [Indexed: 06/01/2023]
Abstract
State-of-the-art electrocatalysts for electrolyzer and fuel cell applications currently rely on platinum group metals, which are costly and subject to supply risks. In recent years, a vast collection of research has explored the possibility of reducing the Pt content in such catalysts by alloying with earth-abundant and cheap metals, enabling co-optimization of cost and activity. Here, using nanoparticle beam deposition, we explore the electrocatalytic performance of PtCu alloy clusters in the hydrogen evolution reaction (HER). Elemental compositions of the produced bimetallic clusters were shown by X-ray photoelectron spectroscopy (XPS) to range from 2 at. % to 38 at. % Pt, while high-angle annular dark field scanning transmission electron microscopy (HAADF-STEM) combined with energy dispersive X-ray (EDX) spectroscopy indicated that the predominant cluster morphologies could be characterized as either a fully mixed alloy or as a mixed core with a Cu-rich shell. In contrast with previous studies, a monotonic decrease in HER activity with increasing Cu content was observed over the composition range studied, with the current density measured at -0.3 V (vs reversible hydrogen electrode) scaling approximately linearly with Pt at. %. This trend opens up the possibility that PtCu could be used as a reference system for comparing the composition-dependent activity of other bimetallic catalysts.
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Affiliation(s)
- Maria
Chiara Spadaro
- College
of Engineering, Swansea University, Bay Campus, Fabian Way, Swansea SA1 8EN, U.K.
| | - Jo J. L. Humphrey
- National
Physical Laboratory, Hampton Road, Teddington, TW11 0LW, U.K.
| | - Rongsheng Cai
- College
of Engineering, Swansea University, Bay Campus, Fabian Way, Swansea SA1 8EN, U.K.
| | - Lidia Martínez
- Instituto
de Ciencia de Materiales de Madrid (ICMM-CSIC), C/Sor Juana Inés de la Cruz,
3, Madrid, 28049, Spain
| | - Sarah J. Haigh
- Department
of Materials, The University of Manchester, Oxford Road, Manchester M13 9PL, U.K.
| | - Yves Huttel
- Instituto
de Ciencia de Materiales de Madrid (ICMM-CSIC), C/Sor Juana Inés de la Cruz,
3, Madrid, 28049, Spain
| | - Steve J. Spencer
- National
Physical Laboratory, Hampton Road, Teddington, TW11 0LW, U.K.
| | - Andrew J. Wain
- National
Physical Laboratory, Hampton Road, Teddington, TW11 0LW, U.K.
| | - Richard Palmer
- College
of Engineering, Swansea University, Bay Campus, Fabian Way, Swansea SA1 8EN, U.K.
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46
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Wang D, Carlton CG, Tayu M, McDouall JJW, Perry GJP, Procter DJ. Trifluoromethyl Sulfoxides: Reagents for Metal-Free C-H Trifluoromethylthiolation. Angew Chem Int Ed Engl 2020; 59:15918-15922. [PMID: 32463942 PMCID: PMC7540508 DOI: 10.1002/anie.202005531] [Citation(s) in RCA: 35] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2020] [Revised: 05/21/2020] [Indexed: 12/22/2022]
Abstract
Trifluoromethyl sulfoxides are a new class of trifluoromethylthiolating reagent. The sulfoxides engage in metal-free C-H trifluoromethylthiolation with a range of (hetero)arenes. The method is also applicable to the functionalization of important compound classes, such as ligand derivatives and polyaromatics, and in the late-stage trifluoromethylthiolation of medicines and agrochemicals. The isolation and characterization of a sulfonium salt intermediate supports an interrupted Pummerer reaction mechanism.
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Affiliation(s)
- Dong Wang
- Department of ChemistryUniversity of ManchesterOxford RoadManchesterM13 9PLUK
| | - C. Grace Carlton
- Department of ChemistryUniversity of ManchesterOxford RoadManchesterM13 9PLUK
| | - Masanori Tayu
- Department of ChemistryUniversity of ManchesterOxford RoadManchesterM13 9PLUK
- Department of ChemistryMeiji Pharmaceutical University2-522-1 NoshioKiyoseTokyo204-8588Japan
| | | | - Gregory J. P. Perry
- Department of ChemistryUniversity of ManchesterOxford RoadManchesterM13 9PLUK
| | - David J. Procter
- Department of ChemistryUniversity of ManchesterOxford RoadManchesterM13 9PLUK
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47
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Abstract
This minireview aims to cover the developments over the past two decades in the chemistry of sulfonium salts. Specifically, insight is provided into the synthetic strategies available for the preparation of these compounds, the different reactivity patterns that are expected depending on their structural features or the reaction conditions applied, and the diversity of organic scaffolds that can thereby be synthesized. Additionally, the pros and cons derived from the use of sulfonium salts are presented and critically compared, when possible, in relation to reagents not based on sulfur but depicting similar reactivity.
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Affiliation(s)
- Sergei I. Kozhushkov
- Institut für Organische und Biomolekulare ChemieGeorg‐August‐Universität GöttingenTammannstr. 237077GöttingenGermany
| | - Manuel Alcarazo
- Institut für Organische und Biomolekulare ChemieGeorg‐August‐Universität GöttingenTammannstr. 237077GöttingenGermany
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48
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Garlyyev B, Xue S, Fichtner J, Bandarenka AS, Andronescu C. Prospects of Value-Added Chemicals and Hydrogen via Electrolysis. CHEMSUSCHEM 2020; 13:2513-2521. [PMID: 32059064 PMCID: PMC7318696 DOI: 10.1002/cssc.202000339] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/06/2020] [Indexed: 06/10/2023]
Abstract
Cost is a major drawback that limits the industrial-scale hydrogen production through water electrolysis. The overall cost of this technology can be decreased by coupling the electrosynthesis of value-added chemicals at the anode side with electrolytic hydrogen generation at the cathode. This Minireview provides a directory of anodic oxidation reactions that can be combined with cathodic hydrogen generation. The important parameters for selecting the anodic reactions, such as choice of catalyst material and its selectivity towards specific products are elaborated in detail. Furthermore, various novel electrolysis cell architectures for effortless separation of value-added products from hydrogen gas are described.
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Affiliation(s)
- Batyr Garlyyev
- Physics of Energy Conversion and StorageDepartment of PhysicsTechnische Universität MünchenJames-Franck-Str. 185748GarchingGermany
| | - Song Xue
- Physics of Energy Conversion and StorageDepartment of PhysicsTechnische Universität MünchenJames-Franck-Str. 185748GarchingGermany
| | - Johannes Fichtner
- Physics of Energy Conversion and StorageDepartment of PhysicsTechnische Universität MünchenJames-Franck-Str. 185748GarchingGermany
| | - Aliaksandr S. Bandarenka
- Physics of Energy Conversion and StorageDepartment of PhysicsTechnische Universität MünchenJames-Franck-Str. 185748GarchingGermany
| | - Corina Andronescu
- Technical Chemistry IIIFaculty of Chemistry and CENIDEUniversity Duisburg-EssenCarl-Benz-Straße 19947057DuisburgGermany
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49
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Kang S, Fan Xia, Zhuofeng Hu, Hu W, She Y, Wang L, Fu X, Lu W. Platinum nanoparticles with TiO2–skin as a durable catalyst for photoelectrochemical methanol oxidation and electrochemical oxygen reduction reactions. Electrochim Acta 2020. [DOI: 10.1016/j.electacta.2020.136119] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
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50
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Rani S, Byron C, Teplyakov AV. Formation of silica-supported platinum nanoparticles as a function of preparation conditions and boron impregnation. J Chem Phys 2020; 152:134701. [PMID: 32268738 DOI: 10.1063/1.5142503] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022] Open
Abstract
Preparation of supported metal nanoparticles for catalytic applications often relies on an assumption that the initially prepared wet-impregnated support material is covered with approximately a monolayer of adsorbed species that are shaped into the target nanoparticulate material with a desired size distribution by utilizing appropriate post-treatments that often include calcination and reduction schemes. Here, the formation and evolution of surface nanoparticles were investigated for wet-chemistry deposition of platinum from trimethyl(methylcyclopentadienyl)platinum (IV) precursor onto flat silica supports to interrogate the factors influencing the initial stages of nanoparticle formation. The deposition was performed on silicon-based substrates, including hydroxylated silica (SiO2) and boron-impregnated hydroxylated silica (B/SiO2) surfaces. The deposition resulted in the immediate formation of Pt-containing nanoparticles, as confirmed by atomic force microscopy and x-ray photoelectron spectroscopy. The prepared substrates were later reduced at 550 °C under H2 gas environment. This reduction procedure resulted in the formation of metallic Pt particles. The reactivity of the precursor and dispersion of Pt nanoparticles on the OH-terminated silica surface were compared to those on the B-impregnated surface. The size distribution of the resulting nanoparticles as a function of surface preparation was evaluated, and density functional theory calculations were used to explain the differences between the two types of surfaces investigated.
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Affiliation(s)
- Sana Rani
- Department of Chemistry and Biochemistry, University of Delaware, Newark, Delaware 19716, USA
| | - Carly Byron
- Department of Chemistry and Biochemistry, University of Delaware, Newark, Delaware 19716, USA
| | - Andrew V Teplyakov
- Department of Chemistry and Biochemistry, University of Delaware, Newark, Delaware 19716, USA
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