1
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Franzén SM, Jönsson L, Ternero P, Kåredal M, Eriksson AC, Blomberg S, Hübner JM, Messing ME. Compositional tuning of gas-phase synthesized Pd-Cu nanoparticles. NANOSCALE ADVANCES 2023; 5:6069-6077. [PMID: 37941940 PMCID: PMC10628985 DOI: 10.1039/d3na00438d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 06/21/2023] [Accepted: 09/05/2023] [Indexed: 11/10/2023]
Abstract
Bimetallic nanoparticles have gained significant attention in catalysis as potential alternatives to expensive catalysts based on noble metals. In this study, we investigate the compositional tuning of Pd-Cu bimetallic nanoparticles using a physical synthesis method called spark ablation. By utilizing pure and alloyed electrodes in different configurations, we demonstrate the ability to tailor the chemical composition of nanoparticles within the range of approximately 80 : 20 at% to 40 : 60 at% (Pd : Cu), measured using X-ray fluorescence (XRF) and transmission electron microscopy energy dispersive X-ray spectroscopy (TEM-EDXS). Time-resolved XRF measurements revealed a shift in composition throughout the ablation process, potentially influenced by material transfer between electrodes. Powder X-ray diffraction confirmed the predominantly fcc phase of the nanoparticles while high-resolution TEM and scanning TEM-EDXS confirmed the mixing of Pd and Cu within individual nanoparticles. X-ray photoelectron and absorption spectroscopy were used to analyze the outermost atomic layers of the nanoparticles, which is highly important for catalytic applications. Such comprehensive analyses offer insights into the formation and structure of bimetallic nanoparticles and pave the way for the development of efficient and affordable catalysts for various applications.
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Affiliation(s)
- Sara M Franzén
- Division of Solid State Physics, Department of Physics, Lund University Lund Sweden
- NanoLund, Lund University Lund Sweden
| | - Linnéa Jönsson
- Division of Solid State Physics, Department of Physics, Lund University Lund Sweden
- NanoLund, Lund University Lund Sweden
| | - Pau Ternero
- Division of Solid State Physics, Department of Physics, Lund University Lund Sweden
- NanoLund, Lund University Lund Sweden
| | - Monica Kåredal
- Occupational and Environmental Medicine, Lund University Lund Sweden
- NanoLund, Lund University Lund Sweden
| | - Axel C Eriksson
- Ergonomics and Aerosol Technology, Lund University Lund Sweden
- NanoLund, Lund University Lund Sweden
| | - Sara Blomberg
- Department of Chemical Engineering, Lund University Lund Sweden
| | | | - Maria E Messing
- Division of Solid State Physics, Department of Physics, Lund University Lund Sweden
- NanoLund, Lund University Lund Sweden
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2
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Liu S, Li Y, Yu X, Han S, Zhou Y, Yang Y, Zhang H, Jiang Z, Zhu C, Li WX, Wöll C, Wang Y, Shen W. Tuning crystal-phase of bimetallic single-nanoparticle for catalytic hydrogenation. Nat Commun 2022; 13:4559. [PMID: 35931670 PMCID: PMC9355964 DOI: 10.1038/s41467-022-32274-4] [Citation(s) in RCA: 16] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2022] [Accepted: 07/22/2022] [Indexed: 11/09/2022] Open
Abstract
Bimetallic nanoparticles afford geometric variation and electron redistribution via strong metal-metal interactions that substantially promote the activity and selectivity in catalysis. Quantitatively describing the atomic configuration of the catalytically active sites, however, is experimentally challenged by the averaging ensemble effect that is caused by the interplay between particle size and crystal-phase at elevated temperatures and under reactive gases. Here, we report that the intrinsic activity of the body-centered cubic PdCu nanoparticle, for acetylene hydrogenation, is one order of magnitude greater than that of the face-centered cubic one. This finding is based on precisely identifying the atomic structures of the active sites over the same-sized but crystal-phase-varied single-particles. The densely-populated Pd-Cu bond on the chemically ordered nanoparticle possesses isolated Pd site with a lower coordination number and a high-lying valence d-band center, and thus greatly expedites the dissociation of H2 over Pd atom and efficiently accommodates the activated H atoms on the particle top/subsurfaces.
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Affiliation(s)
- Shuang Liu
- State Key Laboratory of Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, China
| | - Yong Li
- State Key Laboratory of Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, China.
| | - Xiaojuan Yu
- Institute of Functional Interfaces, Karlsruhe Institute of Technology, Eggenstein-Leopoldshafen, Germany
| | - Shaobo Han
- State Key Laboratory of Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, China
| | - Yan Zhou
- State Key Laboratory of Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, China
| | - Yuqi Yang
- Shanghai Synchrotron Radiation Facility, Shanghai Advanced Research Institute, Chinese Academy of Sciences, Shanghai, China
| | - Hao Zhang
- Shanghai Synchrotron Radiation Facility, Shanghai Advanced Research Institute, Chinese Academy of Sciences, Shanghai, China
| | - Zheng Jiang
- Shanghai Synchrotron Radiation Facility, Shanghai Advanced Research Institute, Chinese Academy of Sciences, Shanghai, China.
| | - Chuwei Zhu
- School of Chemistry and Materials Science, Hefei National Research Center for Physical Sciences at the Microscale, University of Science and Technology of China, Hefei, China
| | - Wei-Xue Li
- School of Chemistry and Materials Science, Hefei National Research Center for Physical Sciences at the Microscale, University of Science and Technology of China, Hefei, China
| | - Christof Wöll
- Institute of Functional Interfaces, Karlsruhe Institute of Technology, Eggenstein-Leopoldshafen, Germany
| | - Yuemin Wang
- Institute of Functional Interfaces, Karlsruhe Institute of Technology, Eggenstein-Leopoldshafen, Germany.
| | - Wenjie Shen
- State Key Laboratory of Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, China.
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3
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Bowker M, Lawes N, Gow I, Hayward J, Esquius JR, Richards N, Smith LR, Slater TJA, Davies TE, Dummer NF, Kabalan L, Logsdail A, Catlow RC, Taylor S, Hutchings GJ. The Critical Role of βPdZn Alloy in Pd/ZnO Catalysts for the Hydrogenation of Carbon Dioxide to Methanol. ACS Catal 2022; 12:5371-5379. [PMID: 35557711 PMCID: PMC9087181 DOI: 10.1021/acscatal.2c00552] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2022] [Revised: 04/07/2022] [Indexed: 11/28/2022]
Abstract
![]()
The rise in atmospheric
CO2 concentration and the concomitant
rise in global surface temperature have prompted massive research
effort in designing catalytic routes to utilize CO2 as
a feedstock. Prime among these is the hydrogenation of CO2 to make methanol, which is a key commodity chemical intermediate,
a hydrogen storage molecule, and a possible future fuel for transport
sectors that cannot be electrified. Pd/ZnO has been identified as
an effective candidate as a catalyst for this reaction, yet there
has been no attempt to gain a fundamental understanding of how this
catalyst works and more importantly to establish specific design criteria
for CO2 hydrogenation catalysts. Here, we show that Pd/ZnO
catalysts have the same metal particle composition, irrespective of
the different synthesis procedures and types of ZnO used here. We
demonstrate that all of these Pd/ZnO catalysts exhibit the same activity
trend. In all cases, the β-PdZn 1:1 alloy is produced and dictates
the catalysis. This conclusion is further supported by the relationship
between conversion and selectivity and their small variation with
ZnO surface area in the range 6–80 m2g–1. Without alloying with Zn, Pd is a reverse water-gas shift catalyst
and when supported on alumina and silica is much less active for CO2 conversion to methanol than on ZnO. Our approach is applicable
to the discovery and design of improved catalysts for CO2 hydrogenation and will aid future catalyst discovery.
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Affiliation(s)
- Michael Bowker
- Cardiff Catalysis Institute, School of Chemistry, Cardiff University, Cardiff CF10 3AT, United Kingdom
- Catalyst Hub, RCAH, Rutherford Appleton Lab, Harwell, Oxford, Didcot OX11 0QX, United Kingdom
- Max Planck-Cardiff Centre on the Fundamentals of Heterogeneous Catalysis FUNCAT, Cardiff Catalysis Institute, School of Chemistry, Cardiff University, Main Building, Park Place, Cardiff CF10 3AT, United Kingdom
| | - Naomi Lawes
- Cardiff Catalysis Institute, School of Chemistry, Cardiff University, Cardiff CF10 3AT, United Kingdom
- Max Planck-Cardiff Centre on the Fundamentals of Heterogeneous Catalysis FUNCAT, Cardiff Catalysis Institute, School of Chemistry, Cardiff University, Main Building, Park Place, Cardiff CF10 3AT, United Kingdom
| | - Isla Gow
- Cardiff Catalysis Institute, School of Chemistry, Cardiff University, Cardiff CF10 3AT, United Kingdom
- Max Planck-Cardiff Centre on the Fundamentals of Heterogeneous Catalysis FUNCAT, Cardiff Catalysis Institute, School of Chemistry, Cardiff University, Main Building, Park Place, Cardiff CF10 3AT, United Kingdom
| | - James Hayward
- Cardiff Catalysis Institute, School of Chemistry, Cardiff University, Cardiff CF10 3AT, United Kingdom
| | - Jonathan Ruiz Esquius
- Cardiff Catalysis Institute, School of Chemistry, Cardiff University, Cardiff CF10 3AT, United Kingdom
- now at: Clean Energy Cluster, International Iberian Nanotechnology Laboratory (INL), Av. Mestre José Veiga, 4715-330 Braga, Portugal
| | - Nia Richards
- Cardiff Catalysis Institute, School of Chemistry, Cardiff University, Cardiff CF10 3AT, United Kingdom
| | - Louise R. Smith
- Cardiff Catalysis Institute, School of Chemistry, Cardiff University, Cardiff CF10 3AT, United Kingdom
- Max Planck-Cardiff Centre on the Fundamentals of Heterogeneous Catalysis FUNCAT, Cardiff Catalysis Institute, School of Chemistry, Cardiff University, Main Building, Park Place, Cardiff CF10 3AT, United Kingdom
| | - Thomas J. A. Slater
- Cardiff Catalysis Institute, School of Chemistry, Cardiff University, Cardiff CF10 3AT, United Kingdom
- Electron Physical Sciences Imaging Centre, Diamond Light Source Ltd., Oxfordshire OX11 0DE, United Kingdom
| | - Thomas E Davies
- Cardiff Catalysis Institute, School of Chemistry, Cardiff University, Cardiff CF10 3AT, United Kingdom
| | - Nicholas F. Dummer
- Cardiff Catalysis Institute, School of Chemistry, Cardiff University, Cardiff CF10 3AT, United Kingdom
- Max Planck-Cardiff Centre on the Fundamentals of Heterogeneous Catalysis FUNCAT, Cardiff Catalysis Institute, School of Chemistry, Cardiff University, Main Building, Park Place, Cardiff CF10 3AT, United Kingdom
| | - Lara Kabalan
- Cardiff Catalysis Institute, School of Chemistry, Cardiff University, Cardiff CF10 3AT, United Kingdom
| | - Andrew Logsdail
- Cardiff Catalysis Institute, School of Chemistry, Cardiff University, Cardiff CF10 3AT, United Kingdom
| | - Richard C. Catlow
- Cardiff Catalysis Institute, School of Chemistry, Cardiff University, Cardiff CF10 3AT, United Kingdom
- Catalyst Hub, RCAH, Rutherford Appleton Lab, Harwell, Oxford, Didcot OX11 0QX, United Kingdom
- Max Planck-Cardiff Centre on the Fundamentals of Heterogeneous Catalysis FUNCAT, Cardiff Catalysis Institute, School of Chemistry, Cardiff University, Main Building, Park Place, Cardiff CF10 3AT, United Kingdom
| | - Stuart Taylor
- Cardiff Catalysis Institute, School of Chemistry, Cardiff University, Cardiff CF10 3AT, United Kingdom
- Max Planck-Cardiff Centre on the Fundamentals of Heterogeneous Catalysis FUNCAT, Cardiff Catalysis Institute, School of Chemistry, Cardiff University, Main Building, Park Place, Cardiff CF10 3AT, United Kingdom
| | - Graham J Hutchings
- Cardiff Catalysis Institute, School of Chemistry, Cardiff University, Cardiff CF10 3AT, United Kingdom
- Max Planck-Cardiff Centre on the Fundamentals of Heterogeneous Catalysis FUNCAT, Cardiff Catalysis Institute, School of Chemistry, Cardiff University, Main Building, Park Place, Cardiff CF10 3AT, United Kingdom
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4
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Selective CO-to-acetate electroreduction via intermediate adsorption tuning on ordered Cu–Pd sites. Nat Catal 2022. [DOI: 10.1038/s41929-022-00757-8] [Citation(s) in RCA: 24] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
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5
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Yamauchi M. Inorganic Nanocatalysts for Hydrogenation Reactions Contributable to a Sustainable Material Supply. CHEM LETT 2021. [DOI: 10.1246/cl.210454] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Affiliation(s)
- Miho Yamauchi
- International Institute for Carbon-Neutral Energy Research (WPI-I2CNER), Kyushu University, 744 Motooka, Nishi-ku, Fukuoka 819-0395, Japan
- Advanced Institute for Materials Research (WPI-AIMR), Tohoku University, 2-1-1 Katahira, Aoba-ku, Sendai, Miyagi 980-8577, Japan
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6
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Hydrogenomics: Efficient and Selective Hydrogenation of Stable Molecules Utilizing Three Aspects of Hydrogen. Catal Letters 2021. [DOI: 10.1007/s10562-021-03750-1] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
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7
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Osugi S, Takano S, Masuda S, Harano K, Tsukuda T. Few-nm-sized, phase-pure Au 5Sn intermetallic nanoparticles: synthesis and characterization. Dalton Trans 2021; 50:5177-5183. [PMID: 33881079 DOI: 10.1039/d1dt00132a] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Nanoparticles of intermetallic compounds have attracted much interest because they can exhibit novel electronic and catalytic properties due to their specific crystal structure, ordered atomic arrangement, and quantum effect. Here, gold-tin (AuSn) bimetallic nanoparticles with various mixing ratios were prepared by a co-reduction method using various protective agents (e.g., polymer, amine, phosphine, carboxylic acid, and thiol). Powder X-ray diffractometry and transmission electron microscopy revealed that few-nm-sized, phase-pure Au5Sn intermetallic nanoparticles (IMNPs) were successfully synthesized when Au3+ and Sn2+ precursors with a ratio of 6 : 4 were co-reduced in the presence of oleylamine. The Au5Sn IMNPs thus prepared did not exhibit localized surface plasmon resonance, in contrast to pure Au nanoparticles of comparable sizes. This suggests that interband transition dominates the optical response due to an increase in the density of states near the Fermi level by introducing Sn. The Au5Sn IMNPs supported on mesoporous silica (SBA-15) catalyzed the aerobic oxidation reaction of indanol.
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Affiliation(s)
- Satoshi Osugi
- Department of Chemistry, Graduate School of Science, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0031, Japan.
| | - Shinjiro Takano
- Department of Chemistry, Graduate School of Science, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0031, Japan.
| | - Shinya Masuda
- Department of Chemistry, Graduate School of Science, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0031, Japan.
| | - Koji Harano
- Department of Chemistry, Graduate School of Science, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0031, Japan.
| | - Tatsuya Tsukuda
- Department of Chemistry, Graduate School of Science, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0031, Japan. and Elements Strategy Initiative for Catalysts and Batteries (ESICB), Kyoto University, Katsura, Kyoto 615-8520, Japan
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8
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Hasegawa S, Tsukuda T. Exploring Novel Catalysis Using Polymer-Stabilized Metal Clusters. BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN 2021. [DOI: 10.1246/bcsj.20200377] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Affiliation(s)
- Shingo Hasegawa
- Department of Chemistry, Graduate School of Science, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
| | - Tatsuya Tsukuda
- Department of Chemistry, Graduate School of Science, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
- Elements Strategy Initiative for Catalysts and Batteries (ESICB), Kyoto University, Katsura, Kyoto 615-8520, Japan
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9
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Xie L, Liang J, Priest C, Wang T, Ding D, Wu G, Li Q. Engineering the atomic arrangement of bimetallic catalysts for electrochemical CO 2 reduction. Chem Commun (Camb) 2021; 57:1839-1854. [PMID: 33527108 DOI: 10.1039/d0cc07589b] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Abstract
The electrochemical CO2 reduction reaction (CO2RR) to form highly valued chemicals is a sustainable solution to address the environmental issues caused by excessive CO2 emissions. Generally, it is challenging to achieve high efficiency and selectivity simultaneously in the CO2RR due to multi-proton/electron transfer processes and complex reaction intermediates. Among the studied formulations, bimetallic catalysts have attracted significant attention with promising activity, selectivity, and stability. Engineering the atomic arrangement of bimetallic nanocatalysts is a promising strategy for the rational design of structures (intermetallic, core/shell, and phase-separated structures) to improve catalytic performance. This review summarizes the recent advances, challenges, and opportunities in developing bimetallic catalysts for the CO2RR. In particular, we firstly introduce the possible reaction pathways on bimetallic catalysts concerning the geometric and electronic properties of intermetallic, core/shell, and phase-separated structures at the atomic level. Then, we critically examine recent advances in crystalline structure engineering for bimetallic catalysts, aiming to establish the correlations between structures and catalytic properties. Finally, we provide a perspective on future research directions, emphasizing current challenges and opportunities.
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Affiliation(s)
- Linfeng Xie
- State Key Laboratory of Material Processing and Die and Mould Technology, School of Materials Science and Engineering, Huazhong University of Science and Technology, Wuhan 430074, China.
| | - Jiashun Liang
- State Key Laboratory of Material Processing and Die and Mould Technology, School of Materials Science and Engineering, Huazhong University of Science and Technology, Wuhan 430074, China.
| | - Cameron Priest
- Department of Chemical and Biological Engineering, University at Buffalo, The State University of New York, Buffalo, NY 14260, USA. and Idaho National Laboratory, Idaho Falls, ID 83415, USA.
| | - Tanyuan Wang
- State Key Laboratory of Material Processing and Die and Mould Technology, School of Materials Science and Engineering, Huazhong University of Science and Technology, Wuhan 430074, China.
| | - Dong Ding
- Idaho National Laboratory, Idaho Falls, ID 83415, USA.
| | - Gang Wu
- Department of Chemical and Biological Engineering, University at Buffalo, The State University of New York, Buffalo, NY 14260, USA.
| | - Qing Li
- State Key Laboratory of Material Processing and Die and Mould Technology, School of Materials Science and Engineering, Huazhong University of Science and Technology, Wuhan 430074, China.
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10
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Escorihuela S, Toldra-Reig F, Escolástico S, Murciano R, Martínez A, Serra JM. Copper surface-alloying of H2-permeable Pd-based membrane for integration in Fischer–Tropsch synthesis reactors. J Memb Sci 2021. [DOI: 10.1016/j.memsci.2020.118516] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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11
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Nishijima Y, Kurotsu T, Yamasaku N, Takahashii H, Kurihara K, Beni T, Okazaki S, Arakawa T, Balčytis A, Seniutinas G, Juodkazis S. Improvement and stabilization of optical hydrogen sensing ability of Au-Pd alloys. OPTICS EXPRESS 2020; 28:25383-25391. [PMID: 32907060 DOI: 10.1364/oe.398784] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/27/2020] [Accepted: 08/05/2020] [Indexed: 06/11/2023]
Abstract
Formation of metal hydrides is a signature chemical property of hydrogen and it can be leveraged to enact both storage and detection of this technologically important yet extremely volatile gas. Palladium shows particular promise as a hydrogen storage medium as well as a platform for creating rapid and reliable H2 optical sensor devices. Furthermore, alloying Pd with other noble metals provides a technologically simple yet powerful way of enacting control over the structural and catalytic properties of the resultant material. Similarly, in addition to alloying, different top-down and bottom-up Pd nanostructuring methods have been proposed and investigated specifically for creating optical H2 sensors. In this work it was determined that the hydrogen sensing ability of a series of Pd-Au alloy films could be improved by way of a hydrogen over exposure (HOE) treatment. Structural investigation showed that the HOE treatment, in addition to irreversibly altering the film morphology, results in a 1 to 2% expansion in the lattice constant of the metal. By combining a cyclic HOE treatment and alloy aging through annealing, the hydrogen detection sensitivity and response rates of Pd-Au films could be stabilized so that their performance would no longer be appreciably affected by repeated hydrogen uptake and release cycles. This work takes a further step towards routine all-optical detection of part-per-million level hydrogen gas concentrations in Pd-Au alloy films and discussion of ways to enhance response rates is provided.
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12
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Cheng Y, Xue J, Yang M, Li H, Guo P. Bimetallic PdCu Nanoparticles for Electrocatalysis: Multiphase or Homogeneous Alloy? Inorg Chem 2020; 59:10611-10619. [PMID: 32678586 DOI: 10.1021/acs.inorgchem.0c01056] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Crystal phase structure of bimetallic alloy is an important factor determining the electrocatalytic activity toward oxidation of energy molecules. In this paper, PdCu bimetallic NPs with similar element composition and different crystal phase structural features have been synthesized hydrothermally by adjusting the content of ethylenediaminetetraacetic acid disodium salt (EDTA-2Na). Multiphase PdCu NPs composed of pure Pd and alloy phase are obtained with a low concentration (even as low as zero) of EDTA-2Na in synthetic systems while homogeneous PdCu alloy NPs are formed in the presence of EDTA-2Na with a high concentration. The catalytic activity of ethanol electrooxidation is increased from 3.1 mA·cm-2 of pure Pd NPs, to 3.6 mA·cm-2 of multiphase PdCu NPs, and to 5.0 mA·cm-2 of homogeneous PdCu alloy NPs (about 2360 mA mgPd-1). The surface composition and structural stability of homogeneous PdCu NPs were much less damaged during electrochemical measurements. Based on the experimental data, the formation mechanism of multiphase and homogeneous PdCu NPs and their structure-property relationship have been discussed.
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Affiliation(s)
- Yuanzhe Cheng
- Institute of Materials for Energy and Environment, State Key Laboratory of Bio-fibers and Eco-textiles, College of Materials Science and Engineering, Qingdao University, Qingdao, 266071, P. R. China
| | - Jing Xue
- Institute of Materials for Energy and Environment, State Key Laboratory of Bio-fibers and Eco-textiles, College of Materials Science and Engineering, Qingdao University, Qingdao, 266071, P. R. China
| | - Min Yang
- Institute of Materials for Energy and Environment, State Key Laboratory of Bio-fibers and Eco-textiles, College of Materials Science and Engineering, Qingdao University, Qingdao, 266071, P. R. China
| | - Hongliang Li
- Institute of Materials for Energy and Environment, State Key Laboratory of Bio-fibers and Eco-textiles, College of Materials Science and Engineering, Qingdao University, Qingdao, 266071, P. R. China
| | - Peizhi Guo
- Institute of Materials for Energy and Environment, State Key Laboratory of Bio-fibers and Eco-textiles, College of Materials Science and Engineering, Qingdao University, Qingdao, 266071, P. R. China
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13
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Synthetically tuned electronic and geometrical properties of intermetallic compounds as effective heterogeneous catalysts. PROG SOLID STATE CH 2018. [DOI: 10.1016/j.progsolidstchem.2018.09.001] [Citation(s) in RCA: 40] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
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14
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Liu S, Li Y, Ta N, Zhou Y, Wu Y, Li M, Miao S, Shen W. Fabrication of palladium-copper nanoparticles with controllable size and chemical composition. J Colloid Interface Sci 2018; 526:201-206. [PMID: 29734087 DOI: 10.1016/j.jcis.2018.04.109] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2018] [Revised: 04/24/2018] [Accepted: 04/28/2018] [Indexed: 01/05/2023]
Abstract
A series of PdxCu100-x (x = 20, 40, 60, 80) particles with the sizes of 7-9 nm were fabricated by a two-step polyol reduction process, which differentiated the nucleation and growth steps of the nanoparticles. The primary reduction of Pd2+ by ethylene glycol at 393 K formed appreciable amounts of Pd0 nuclei, while the subsequent reduction at 473 K fully reduced the Pd2+ and Cu2+ species with the aid of the initially formed Pd nuclei seeds. Meanwhile, the releasing oleylamine, previously coordinated with metal cations, acted as the capping agent to segregate the nanoparticles. Both parameters simultaneously controlled the assembly kinetics of the bimetallic nanoparticles and resulted in uniform sizes and designed chemical compositions. Among them, the Pd80Cu20 nanoparticles showed quite promising activity and selectivity for the hydrogenation of nitrobenzene under mild conditions.
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Affiliation(s)
- Shuang Liu
- State Key Laboratory of Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Yong Li
- State Key Laboratory of Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China.
| | - Na Ta
- State Key Laboratory of Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China
| | - Yan Zhou
- State Key Laboratory of Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China
| | - Yongbin Wu
- State Key Laboratory of Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Mingrun Li
- State Key Laboratory of Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China
| | - Shu Miao
- State Key Laboratory of Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China
| | - Wenjie Shen
- State Key Laboratory of Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China.
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15
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Marakatti VS, Sarma SC, Joseph B, Banerjee D, Peter SC. Synthetically Tuned Atomic Ordering in PdCu Nanoparticles with Enhanced Catalytic Activity toward Solvent-Free Benzylamine Oxidation. ACS APPLIED MATERIALS & INTERFACES 2017; 9:3602-3615. [PMID: 28067036 DOI: 10.1021/acsami.6b12253] [Citation(s) in RCA: 42] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Synthesis of ordered compounds with nano size is of particular interest for tuning the surface properties with enhanced activity and selectivity toward various important industrial catalytic processes. In this work, we synthesized ordered PdCu nanoparticles as highly efficient catalyst for the solvent-free aerobic oxidation of benzylamine. The PdxCu1-x catalysts with different chemical compositions (x = 0, 0.25, 0.4, 0.5, 0.6, 0.75, 1) were prepared by polyol method using NaBH4 as a reducing agent and were well-characterized by X-ray diffraction (XRD), inductively coupled plasma optical emission spectroscopy, X-ray photoelectron spectroscopy, transmission electron microscopy (TEM) energy-dispersive analysis of X-rays, and X-ray absorption fine structure. The effect of different metal concentrations of Pd and Cu on the formation of PdxCu1-x nanoparticles was investigated. The XRD and TEM confirmed the formation of ordered PdCu intermetallic phase with body-centered cubic (BCC) structure for the synthetic composition of Pd/Cu = 1:1. For compositions x = 0, 0.25, 0.75, and 1, PdxCu1-x alloy with face-centered cubic (FCC) structure was observed, whereas mixed phase of BCC and FCC was observed for x = 0.4 and 0.6. The use of strong reducing agent (NaBH4) was essential to synthesize PdCu ordered phase compared to weak reducing agents such as oleylamine and ascorbic acid. The PdCu nanocatalyst with ordered structure (BCC) showed excellent catalytic activity compared to PdxCu1-x alloy nanoparticles with FCC structure. The atomic ordering in the PdCu intermetallic was the driving force for the enhancement in the catalytic activity with high benzylamine conversion of 94.0% and dibenzylimine selectivity of 92.2% compared to its monometallic and alloy counterparts. Moreover, ordered PdCu alloy showed good recyclability and activity toward the oxidation of different amines.
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Affiliation(s)
- Vijaykumar S Marakatti
- New Chemistry Unit, Jawaharlal Nehru Centre for Advanced Scientific Research , Jakkur, Bangalore 560064, India
| | - Saurav Ch Sarma
- New Chemistry Unit, Jawaharlal Nehru Centre for Advanced Scientific Research , Jakkur, Bangalore 560064, India
| | - Boby Joseph
- Elettra Sincrotrone Trieste SCpA , SS14 Km 163.5, Trieste, Basovizza 34149, Italy
| | - Dipanjan Banerjee
- Dutch-Belgian Beamline, The European Synchrotron Radiation Facility , CS 40220, 38043 Grenoble, France
| | - Sebastian C Peter
- New Chemistry Unit, Jawaharlal Nehru Centre for Advanced Scientific Research , Jakkur, Bangalore 560064, India
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16
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Ma S, Sadakiyo M, Heima M, Luo R, Haasch RT, Gold JI, Yamauchi M, Kenis PJA. Electroreduction of Carbon Dioxide to Hydrocarbons Using Bimetallic Cu-Pd Catalysts with Different Mixing Patterns. J Am Chem Soc 2016; 139:47-50. [PMID: 27958727 DOI: 10.1021/jacs.6b10740] [Citation(s) in RCA: 370] [Impact Index Per Article: 46.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
Electrochemical conversion of CO2 holds promise for utilization of CO2 as a carbon feedstock and for storage of intermittent renewable energy. Presently Cu is the only metallic electrocatalyst known to reduce CO2 to appreciable amounts of hydrocarbons, but often a wide range of products such as CO, HCOO-, and H2 are formed as well. Better catalysts that exhibit high activity and especially high selectivity for specific products are needed. Here a range of bimetallic Cu-Pd catalysts with ordered, disordered, and phase-separated atomic arrangements (Cuat:Pdat = 1:1), as well as two additional disordered arrangements (Cu3Pd and CuPd3 with Cuat:Pdat = 3:1 and 1:3), are studied to determine key factors needed to achieve high selectivity for C1 or C2 chemicals in CO2 reduction. When compared with the disordered and phase-separated CuPd catalysts, the ordered CuPd catalyst exhibits the highest selectivity for C1 products (>80%). The phase-separated CuPd and Cu3Pd achieve higher selectivity (>60%) for C2 chemicals than CuPd3 and ordered CuPd, which suggests that the probability of dimerization of C1 intermediates is higher on surfaces with neighboring Cu atoms. Based on surface valence band spectra, geometric effects rather than electronic effects seem to be key in determining the selectivity of bimetallic Cu-Pd catalysts. These results imply that selectivities to different products can be tuned by geometric arrangements. This insight may benefit the design of catalytic surfaces that further improve activity and selectivity for CO2 reduction.
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Affiliation(s)
- Sichao Ma
- Dept. of Chemistry and Chemical and Biomolecular Engineering, UIUC , 600 S. Mathews Ave., Urbana, Illinois 61801, United States.,International Institute for Carbon-Neutral Energy Research (WPI-I2CNER), Kyushu University , 744 Moto-oka, Nishi-ku, Fukuoka 819-0395, Japan
| | - Masaaki Sadakiyo
- International Institute for Carbon-Neutral Energy Research (WPI-I2CNER), Kyushu University , 744 Moto-oka, Nishi-ku, Fukuoka 819-0395, Japan.,CREST, JST, 4-1-8 Honcho, Kawaguchi, Saitama 332-0012, Japan
| | - Minako Heima
- International Institute for Carbon-Neutral Energy Research (WPI-I2CNER), Kyushu University , 744 Moto-oka, Nishi-ku, Fukuoka 819-0395, Japan.,CREST, JST, 4-1-8 Honcho, Kawaguchi, Saitama 332-0012, Japan
| | - Raymond Luo
- Dept. of Chemistry and Chemical and Biomolecular Engineering, UIUC , 600 S. Mathews Ave., Urbana, Illinois 61801, United States
| | - Richard T Haasch
- Frederick Seitz Materials Research Laboratory, UIUC , 104 S. Goodwin Ave., Urbana, Illinois 61801, United States
| | - Jake I Gold
- Dept. of Chemistry and Chemical and Biomolecular Engineering, UIUC , 600 S. Mathews Ave., Urbana, Illinois 61801, United States
| | - Miho Yamauchi
- International Institute for Carbon-Neutral Energy Research (WPI-I2CNER), Kyushu University , 744 Moto-oka, Nishi-ku, Fukuoka 819-0395, Japan.,CREST, JST, 4-1-8 Honcho, Kawaguchi, Saitama 332-0012, Japan
| | - Paul J A Kenis
- Dept. of Chemistry and Chemical and Biomolecular Engineering, UIUC , 600 S. Mathews Ave., Urbana, Illinois 61801, United States.,International Institute for Carbon-Neutral Energy Research (WPI-I2CNER), Kyushu University , 744 Moto-oka, Nishi-ku, Fukuoka 819-0395, Japan
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17
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Jiang Y, Li H, Wu Z, Ye W, Zhang H, Wang Y, Sun C, Zhang Z. In Situ Observation of Hydrogen-Induced Surface Faceting for Palladium-Copper Nanocrystals at Atmospheric Pressure. Angew Chem Int Ed Engl 2016. [DOI: 10.1002/ange.201605956] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Ying Jiang
- State Key Laboratory of Silicon Materials and Center of Electron Microscopy; School of Materials Science and Engineering; Zhejiang University; Hangzhou 310027 China
| | - Hengbo Li
- State Key Laboratory of Silicon Materials and Center of Electron Microscopy; School of Materials Science and Engineering; Zhejiang University; Hangzhou 310027 China
| | - Zhemin Wu
- State Key Laboratory of Silicon Materials and Center of Electron Microscopy; School of Materials Science and Engineering; Zhejiang University; Hangzhou 310027 China
| | - Wenying Ye
- State Key Laboratory of Silicon Materials and Center of Electron Microscopy; School of Materials Science and Engineering; Zhejiang University; Hangzhou 310027 China
| | - Hui Zhang
- State Key Laboratory of Silicon Materials and Center of Electron Microscopy; School of Materials Science and Engineering; Zhejiang University; Hangzhou 310027 China
| | - Yong Wang
- State Key Laboratory of Silicon Materials and Center of Electron Microscopy; School of Materials Science and Engineering; Zhejiang University; Hangzhou 310027 China
| | - Chenghua Sun
- ARC Centre for Electromaterials Science; School of Chemistry; Monash University; Clayton Victoria 3800 Australia
| | - Ze Zhang
- State Key Laboratory of Silicon Materials and Center of Electron Microscopy; School of Materials Science and Engineering; Zhejiang University; Hangzhou 310027 China
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18
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Jiang Y, Li H, Wu Z, Ye W, Zhang H, Wang Y, Sun C, Zhang Z. In Situ Observation of Hydrogen-Induced Surface Faceting for Palladium-Copper Nanocrystals at Atmospheric Pressure. Angew Chem Int Ed Engl 2016; 55:12427-30. [DOI: 10.1002/anie.201605956] [Citation(s) in RCA: 64] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2016] [Revised: 07/25/2016] [Indexed: 11/07/2022]
Affiliation(s)
- Ying Jiang
- State Key Laboratory of Silicon Materials and Center of Electron Microscopy; School of Materials Science and Engineering; Zhejiang University; Hangzhou 310027 China
| | - Hengbo Li
- State Key Laboratory of Silicon Materials and Center of Electron Microscopy; School of Materials Science and Engineering; Zhejiang University; Hangzhou 310027 China
| | - Zhemin Wu
- State Key Laboratory of Silicon Materials and Center of Electron Microscopy; School of Materials Science and Engineering; Zhejiang University; Hangzhou 310027 China
| | - Wenying Ye
- State Key Laboratory of Silicon Materials and Center of Electron Microscopy; School of Materials Science and Engineering; Zhejiang University; Hangzhou 310027 China
| | - Hui Zhang
- State Key Laboratory of Silicon Materials and Center of Electron Microscopy; School of Materials Science and Engineering; Zhejiang University; Hangzhou 310027 China
| | - Yong Wang
- State Key Laboratory of Silicon Materials and Center of Electron Microscopy; School of Materials Science and Engineering; Zhejiang University; Hangzhou 310027 China
| | - Chenghua Sun
- ARC Centre for Electromaterials Science; School of Chemistry; Monash University; Clayton Victoria 3800 Australia
| | - Ze Zhang
- State Key Laboratory of Silicon Materials and Center of Electron Microscopy; School of Materials Science and Engineering; Zhejiang University; Hangzhou 310027 China
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19
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Yamauchi M, Ozawa N, Kubo M. Experimental and Quantum Chemical Approaches to Develop Highly Selective Nanocatalysts for CO2-free Power Circulation. CHEM REC 2016; 16:2249-2259. [DOI: 10.1002/tcr.201600047] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2016] [Indexed: 01/01/2023]
Affiliation(s)
- Miho Yamauchi
- International Institute for Carbon-Neutral Energy Research (WPI-I CNER), Kyushu University; Motooka 744 Nishi-ku Fukuoka 819-0395 Japan
| | - Nobuki Ozawa
- Institute for Materials Research, Tohoku University; 2-1-1 Katahira Aoba-ku Sendai 980-8577 Japan
| | - Momoji Kubo
- Institute for Materials Research, Tohoku University; 2-1-1 Katahira Aoba-ku Sendai 980-8577 Japan
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20
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Li G, Kobayashi H, Kusada K, Taylor JM, Kubota Y, Kato K, Takata M, Yamamoto T, Matsumura S, Kitagawa H. An ordered bcc CuPd nanoalloy synthesised via the thermal decomposition of Pd nanoparticles covered with a metal-organic framework under hydrogen gas. Chem Commun (Camb) 2015; 50:13750-3. [PMID: 25251225 DOI: 10.1039/c4cc05941g] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Abstract
Presented here is the synthesis of an ordered bcc copper-palladium nanoalloy, via the decomposition of a Pd nanoparticle@metal-organic framework composite material. In situ XRD measurements were performed in order to understand the mechanism of the decomposition process. This result gives a further perspective into the synthesis of new nanomaterials via metal-organic framework decomposition.
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Affiliation(s)
- Guangqin Li
- Division of Chemistry, Graduate School of Science, Kyoto University, Kitashirakawa-Oiwakecho, Sakyo-ku, Kyoto 606-8502, Japan.
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21
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Matsumoto T, Sadakiyo M, Ooi ML, Yamamoto T, Matsumura S, Kato K, Takeguchi T, Ozawa N, Kubo M, Yamauchi M. Atomically mixed Fe-group nanoalloys: catalyst design for the selective electrooxidation of ethylene glycol to oxalic acid. Phys Chem Chem Phys 2015; 17:11359-66. [DOI: 10.1039/c5cp00954e] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Catalytic performances of Fe-group-nanoalloys, which serve as anode catalysts in direct ethylene glycol alkaline fuel cells, were fine tuned.
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Affiliation(s)
- Takeshi Matsumoto
- International Institute for Carbon-Neutral Energy Research (WPI-I2CNER)
- Kyushu University
- Fukuoka 819-0395
- Japan
- CREST
| | - Masaaki Sadakiyo
- International Institute for Carbon-Neutral Energy Research (WPI-I2CNER)
- Kyushu University
- Fukuoka 819-0395
- Japan
- CREST
| | - Mei Lee Ooi
- International Institute for Carbon-Neutral Energy Research (WPI-I2CNER)
- Kyushu University
- Fukuoka 819-0395
- Japan
- CREST
| | - Tomokazu Yamamoto
- CREST
- JST
- Kawaguchi
- Japan
- Department of Applied Quantum Physics and Nuclear Engineering
| | - Syo Matsumura
- CREST
- JST
- Kawaguchi
- Japan
- Department of Applied Quantum Physics and Nuclear Engineering
| | | | | | - Nobuki Ozawa
- CREST
- JST
- Kawaguchi
- Japan
- Fracture and Reliability Research Institute (FRRI)
| | - Momoji Kubo
- Fracture and Reliability Research Institute (FRRI)
- Graduate School of Engineering
- Tohoku University
- Sendai 980-8579
- Japan
| | - Miho Yamauchi
- International Institute for Carbon-Neutral Energy Research (WPI-I2CNER)
- Kyushu University
- Fukuoka 819-0395
- Japan
- CREST
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22
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Suzuki S, Tomita Y, Kuwabata S, Torimoto T. Synthesis of alloy AuCu nanoparticles with the L10 structure in an ionic liquid using sputter deposition. Dalton Trans 2015; 44:4186-94. [DOI: 10.1039/c4dt03557g] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
Synthesis of alloy AuCu nanoparticles with the L10 structure in an ionic liquid using sputter deposition.
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Affiliation(s)
- Shushi Suzuki
- Graduate School of Engineering
- Nagoya University
- Nagoya 464-8603
- Japan
| | - Yousuke Tomita
- Graduate School of Engineering
- Nagoya University
- Nagoya 464-8603
- Japan
| | - Susumu Kuwabata
- Graduate School of Engineering
- Osaka University
- Suita
- Japan
- Japan Science and Technology Agency
| | - Tsukasa Torimoto
- Graduate School of Engineering
- Nagoya University
- Nagoya 464-8603
- Japan
- Japan Science and Technology Agency
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23
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Matsumoto T, Sadakiyo M, Ooi ML, Kitano S, Yamamoto T, Matsumura S, Kato K, Takeguchi T, Yamauchi M. CO2-free power generation on an iron group nanoalloy catalyst via selective oxidation of ethylene glycol to oxalic acid in alkaline media. Sci Rep 2014; 4:5620. [PMID: 25004118 PMCID: PMC4086216 DOI: 10.1038/srep05620] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2014] [Accepted: 06/20/2014] [Indexed: 01/11/2023] Open
Abstract
An Fe group ternary nanoalloy (NA) catalyst enabled selective electrocatalysis towards CO2-free power generation from highly deliverable ethylene glycol (EG). A solid-solution-type FeCoNi NA catalyst supported on carbon was prepared by a two-step reduction method. High-resolution electron microscopy techniques identified atomic-level mixing of constituent elements in the nanoalloy. We examined the distribution of oxidised species, including CO2, produced on the FeCoNi nanoalloy catalyst in the EG electrooxidation under alkaline conditions. The FeCoNi nanoalloy catalyst exhibited the highest selectivities toward the formation of C2 products and to oxalic acid, i.e., 99 and 60%, respectively, at 0.4 V vs. the reversible hydrogen electrode (RHE), without CO2 generation. We successfully generated power by a direct EG alkaline fuel cell employing the FeCoNi nanoalloy catalyst and a solid-oxide electrolyte with oxygen reduction ability, i.e., a completely precious-metal-free system.
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Affiliation(s)
- Takeshi Matsumoto
- 1] International Institute for Carbon Neutral Energy Research (WPI-I2CNER), Kyushu University, Motooka 744, Nishi-ku, Fukuoka 819-0395, Japan [2] CREST, JST, 4-1-8 Honcho, Kawaguchi, Saitama 332-0012, Japan
| | - Masaaki Sadakiyo
- 1] International Institute for Carbon Neutral Energy Research (WPI-I2CNER), Kyushu University, Motooka 744, Nishi-ku, Fukuoka 819-0395, Japan [2] CREST, JST, 4-1-8 Honcho, Kawaguchi, Saitama 332-0012, Japan
| | - Mei Lee Ooi
- 1] International Institute for Carbon Neutral Energy Research (WPI-I2CNER), Kyushu University, Motooka 744, Nishi-ku, Fukuoka 819-0395, Japan [2] CREST, JST, 4-1-8 Honcho, Kawaguchi, Saitama 332-0012, Japan
| | - Sho Kitano
- 1] International Institute for Carbon Neutral Energy Research (WPI-I2CNER), Kyushu University, Motooka 744, Nishi-ku, Fukuoka 819-0395, Japan [2] CREST, JST, 4-1-8 Honcho, Kawaguchi, Saitama 332-0012, Japan
| | - Tomokazu Yamamoto
- 1] CREST, JST, 4-1-8 Honcho, Kawaguchi, Saitama 332-0012, Japan [2] Department of Applied Quantum Physics and Nuclear Engineering, Kyushu University, Motooka 744, Nishi-ku, Fukuoka 819-0395, Japan
| | - Syo Matsumura
- 1] CREST, JST, 4-1-8 Honcho, Kawaguchi, Saitama 332-0012, Japan [2] Department of Applied Quantum Physics and Nuclear Engineering, Kyushu University, Motooka 744, Nishi-ku, Fukuoka 819-0395, Japan
| | - Kenichi Kato
- 1] CREST, JST, 4-1-8 Honcho, Kawaguchi, Saitama 332-0012, Japan [2] RIKEN SPring-8 Center, 1-1-1 Kouto, Sayo-cho, Sayo-gun, Hyogo 679-5148, Japan
| | - Tatsuya Takeguchi
- 1] CREST, JST, 4-1-8 Honcho, Kawaguchi, Saitama 332-0012, Japan [2] Department of Chemistry and Bioengineering, Faculty of Engineering, Iwate University, 4-3-5 Ueda, Morioka, Iwate 020-8551, Japan
| | - Miho Yamauchi
- 1] International Institute for Carbon Neutral Energy Research (WPI-I2CNER), Kyushu University, Motooka 744, Nishi-ku, Fukuoka 819-0395, Japan [2] CREST, JST, 4-1-8 Honcho, Kawaguchi, Saitama 332-0012, Japan
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24
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Yamauchi M, Okubo K, Tsukuda T, Kato K, Takata M, Takeda S. Hydrogen-induced structural transformation of AuCu nanoalloys probed by synchrotron X-ray diffraction techniques. NANOSCALE 2014; 6:4067-4071. [PMID: 24608274 DOI: 10.1039/c3nr06327e] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
In situ X-ray diffraction measurements reveal that the transformation of a AuCu nanoalloy from a face-centered-cubic to an L10 structure is accelerated under a hydrogen atmosphere. The structural transformation rate for the AuCu nanoalloy under hydrogen above 433 K was found to be 100 times faster than that in a vacuum, which is the first quantitative observation of hydrogen-induced ordering of nanoalloys.
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Affiliation(s)
- M Yamauchi
- WPI-I2CNER, Kyushu University, Motooka 744, Nishi-ku, Fukuoka 819-0395, Japan
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25
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Mukundan V, Yin J, Joseph P, Luo J, Shan S, Zakharov DN, Zhong CJ, Malis O. Nanoalloying and phase transformations during thermal treatment of physical mixtures of Pd and Cu nanoparticles. SCIENCE AND TECHNOLOGY OF ADVANCED MATERIALS 2014; 15:025002. [PMID: 27877663 PMCID: PMC5090414 DOI: 10.1088/1468-6996/15/2/025002] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/19/2013] [Revised: 03/26/2014] [Accepted: 02/20/2014] [Indexed: 06/05/2023]
Abstract
Nanoscale alloying and phase transformations in physical mixtures of Pd and Cu ultrafine nanoparticles are investigated in real time with in situ synchrotron-based x-ray diffraction complemented by ex situ high-resolution transmission electron microscopy. The combination of metal-support interaction and reactive/non-reactive environment was found to determine the thermal evolution and ultimate structure of this binary system. At 300 °C, the nanoparticles supported on silica and carbon black intermix to form a chemically ordered CsCl-type (B2) alloy phase. The B2 phase transforms into a disordered fcc alloy at higher temperature (> 450 °C). The alloy nanoparticles supported on silica and carbon black are homogeneous in volume, but evidence was found of Pd surface enrichment. In sharp contrast, when supported on alumina, the two metals segregated at 300 °C to produce almost pure fcc Cu and Pd phases. Upon further annealing of the mixture on alumina above 600 °C, the two metals interdiffused, forming two distinct disordered alloys of compositions 30% and 90% Pd. The annealing atmosphere also plays a major role in the structural evolution of these bimetallic nanoparticles. The nanoparticles annealed in forming gas are larger than the nanoparticles annealing in helium due to reduction of the surface oxides that promotes coalescence and sintering.
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Affiliation(s)
| | - Jun Yin
- Department of Chemistry, State University of New York at Binghamton, Binghamton, NY, USA
| | - Pharrah Joseph
- Department of Chemistry, State University of New York at Binghamton, Binghamton, NY, USA
| | - Jin Luo
- Department of Chemistry, State University of New York at Binghamton, Binghamton, NY, USA
| | - Shiyao Shan
- Department of Chemistry, State University of New York at Binghamton, Binghamton, NY, USA
| | - Dmitri N Zakharov
- Center for Functional Nanomaterials, Brookhaven National Laboratory, Upton, NY, USA
| | - Chuan-Jian Zhong
- Department of Chemistry, State University of New York at Binghamton, Binghamton, NY, USA
| | - Oana Malis
- Department of Physics, Purdue University, West Lafayette, IN, USA
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26
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Li C, Imura M, Yamauchi Y. Displacement Plating of a Mesoporous Pt Skin onto Co Nanochains in a Low-Concentration Surfactant Solution. Chemistry 2014; 20:3277-82. [DOI: 10.1002/chem.201303250] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2013] [Revised: 01/04/2014] [Indexed: 11/09/2022]
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27
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Yu F, Zhou W, Bellabarba RM, Tooze RP. One-step synthesis and shape-control of CuPd nanowire networks. NANOSCALE 2014; 6:1093-1098. [PMID: 24296548 DOI: 10.1039/c3nr04223e] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
An effective one-step method has been developed to synthesize CuPd bimetallic nanowire networks. Investigation of the growth process revealed that the nanowires were formed by attachment of spherical particles and strongly influenced by interactions between surface ligands and metals. The morphology of CuPd nanoparticles is tuned via changing the molecular weight of polyvinylpyrrolidone (PVP) and solvents. The versatility of this method was further demonstrated by preparation of AgPd nanowires. An electrochemical study of CuPd nanowire networks shows morphology dependent activity in oxygen reduction reaction (ORR), which is comparable to that of platinum.
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Affiliation(s)
- Fengjiao Yu
- School of Chemistry, University of St Andrews, St Andrews, KY16 9ST, UK.
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28
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Sharif MJ, Yamauchi M, Toh S, Matsumura S, Noro SI, Kato K, Takata M, Tsukuda T. Enhanced magnetization in highly crystalline and atomically mixed bcc Fe-Co nanoalloys prepared by hydrogen reduction of oxide composites. NANOSCALE 2013; 5:1489-1493. [PMID: 23334346 DOI: 10.1039/c2nr33467d] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
Fe(x)Co(100-x) nanoalloys (NAs) with 20 ≤ x ≤ 80 were prepared by hydrogen reduction of Fe-Co oxide nano-composites, which were composed of mixed phases (or domains) of Fe(2)O(3) and CoO. In situ X-ray diffraction (XRD) measurements using synchrotron radiation clearly showed development of a solid-solution Fe-Co phase by hydrogen reduction from the oxide composites. High-resolution transmission electron microscopy (TEM), high-angle annular dark-field scanning TEM and powder XRD revealed that Fe-Co NAs form a single crystal structure and the two elements are mixed homogeneously. The saturation magnetization depends on the size and metal composition and shows the highest value (250 emu g(-1)) for the Fe(70)Co(30) NA in the size range of 30-55 nm, which is comparable to that of the Fe(70)Co(30) bulk alloy (245 emu g(-1)). This high magnetization is attributable to high crystallinity and homogeneous mixing of constituent atoms, which are attained by thermal treatment of oxide phases under a hydrogen atmosphere.
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Affiliation(s)
- Md Jafar Sharif
- Catalysis Research Center, Hokkaido University, Nishi 10, Kita 21, Sapporo 001-0021, Japan
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29
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Maity P, Xie S, Yamauchi M, Tsukuda T. Stabilized gold clusters: from isolation toward controlled synthesis. NANOSCALE 2012; 4:4027-37. [PMID: 22717451 DOI: 10.1039/c2nr30900a] [Citation(s) in RCA: 220] [Impact Index Per Article: 18.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/05/2023]
Abstract
Bare metal clusters with fewer than ∼100 atoms exhibit intrinsically unique and size-specific properties, making them promising functional units or building blocks for novel materials. To utilize such clusters in functional materials, they need to be stabilized against coalescence by employing organic ligands, polymers, and solid materials. To realize rational development of cluster-based materials, it is essential to clarify how the stability and nature of clusters are modified by interactions with stabilizers by characterizing isolated clusters. The next stage is to design on-demand function by intentionally controlling the structural parameters of cluster-based materials; such parameters include the size, composition, and atomic arrangement of clusters and the interfacial structure between clusters and stabilizers. This review summarizes the current state of the art of isolation of gold clusters stabilized in various environments and surveys ongoing efforts to precisely control the structural parameters with atomic level accuracy.
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Affiliation(s)
- Prasenjit Maity
- Catalysis Research Center, Hokkaido University, Nishi 10, Kita 21, Sapporo 001-0021, Japan
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30
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Li PY, Cao ZH, Meng XK. Facile synthesis of superparamagnetic Ni–Fe ultrafine nanoalloy nanoparticles with equilibrium ordered phase structure via a sol–gel process. Dalton Trans 2012; 41:12101-5. [DOI: 10.1039/c2dt31484c] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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