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Ashraf S, Liu Y, Wei H, Shen R, Zhang H, Wu X, Mehdi S, Liu T, Li B. Bimetallic Nanoalloy Catalysts for Green Energy Production: Advances in Synthesis Routes and Characterization Techniques. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2023; 19:e2303031. [PMID: 37356067 DOI: 10.1002/smll.202303031] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/11/2023] [Revised: 05/22/2023] [Indexed: 06/27/2023]
Abstract
Bimetallic Nanoalloy catalysts have diverse uses in clean energy, sensing, catalysis, biomedicine, and energy storage, with some supported and unsupported catalysts. Conventional synthetic methods for producing bimetallic alloy nanoparticles often produce unalloyed and bulky particles that do not exhibit desired characteristics. Alloys, when prepared with advanced nanoscale methods, give higher surface area, activity, and selectivity than individual metals due to changes in their electronic properties and reduced size. This review demonstrates the synthesis methods and principles to produce and characterize highly dispersed, well-alloyed bimetallic nanoalloy particles in relatively simple, effective, and generalized approaches and the overall existence of conventional synthetic methods with modifications to prepare bimetallic alloy catalysts. The basic concepts and mechanistic understanding are represented with purposely selected examples. Herein, the enthralling properties with widespread applications of nanoalloy catalysts in heterogeneous catalysis are also presented, especially for Hydrogen Evolution Reaction (HER), Oxidation Reduction Reaction (ORR), Oxygen Evolution Reaction (OER), and alcohol oxidation with a particular focus on Pt and Pd-based bimetallic nanoalloys and their numerous fields of applications. The high entropy alloy is described as a complicated subject with an emphasis on laser-based green synthesis of nanoparticles and, in conclusion, the forecasts and contemporary challenges for the controlled synthesis of nanoalloys are addressed.
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Affiliation(s)
- Saima Ashraf
- Research Center of Green Catalysis, College of Chemistry, Zhengzhou University, 100 Science Road, Zhengzhou, 450001, P. R. China
| | - Yanyan Liu
- Research Center of Green Catalysis, College of Chemistry, Zhengzhou University, 100 Science Road, Zhengzhou, 450001, P. R. China
- College of Science, Henan Agricultural University, 63 Nongye Road, Zhengzhou, 450002, P. R. China
| | - Huijuan Wei
- Research Center of Green Catalysis, College of Chemistry, Zhengzhou University, 100 Science Road, Zhengzhou, 450001, P. R. China
| | - Ruofan Shen
- Research Center of Green Catalysis, College of Chemistry, Zhengzhou University, 100 Science Road, Zhengzhou, 450001, P. R. China
| | - Huanhuan Zhang
- Research Center of Green Catalysis, College of Chemistry, Zhengzhou University, 100 Science Road, Zhengzhou, 450001, P. R. China
| | - Xianli Wu
- Research Center of Green Catalysis, College of Chemistry, Zhengzhou University, 100 Science Road, Zhengzhou, 450001, P. R. China
| | - Sehrish Mehdi
- Research Center of Green Catalysis, College of Chemistry, Zhengzhou University, 100 Science Road, Zhengzhou, 450001, P. R. China
| | - Tao Liu
- CAS Key Laboratory for Biomedical Effects of Nanomaterials and Nanosafety, National Center for Nanoscience and Technology, Beijing, 100190, P. R. China
| | - Baojun Li
- Research Center of Green Catalysis, College of Chemistry, Zhengzhou University, 100 Science Road, Zhengzhou, 450001, P. R. China
- Department of Chemistry, Tsinghua University, Beijing, 100084, P. R. China
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Yao Y, Tsuda T, Torimoto T, Kuwabata S. Electrocatalyst Fabrication Using Metal Nanoparticles Prepared in Ionic Liquids. CHEM REC 2023; 23:e202200274. [PMID: 36715491 DOI: 10.1002/tcr.202200274] [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: 12/01/2022] [Revised: 01/19/2023] [Indexed: 01/31/2023]
Abstract
Metal nanoparticle-based electrocatalysts are widely used in electronic devices, which serve for electrochemical reactions like oxygen reduction reaction, alcohol oxidation and CO2 reduction reaction. These catalyst-dependent reactions are the key of the emerging clean energy systems. Catalyst design and synthesis therefore have received keen attention in past decades. We are motivated to study synthesis approaches of metal nanoparticle-based electrocatalysts using ionic liquids (ILs), which are promising solvents for the nanoparticle preparation because of their unique physicochemical properties. In this personal account, we review our previous and present works on nanoparticle preparation in IL and utilization of the obtained nanoparticles as electrocatalysts.
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Affiliation(s)
- Yu Yao
- Department of Chemistry, University at Buffalo, State University of New York, Buffalo, New York, 14260, USA
| | - Tetsuya Tsuda
- Department of Materials Science, Graduate School of Science and Engineering, Chiba University, 1-33 Yayoicho, Inage-ku, Chiba, 263-8522, Japan
| | - Tsukasa Torimoto
- Department of Materials Chemistry, Graduate School of Engineering, Nagoya University, Furo-cho, Chikusa-ku, Nagoya, Aichi, 464-8603, Japan
| | - Susumu Kuwabata
- Department of Applied Chemistry, Graduate School of Engineering, Osaka University, 2-1 Yamada-oka, Suita, Osaka, 565-0871, Japan
- Innovative Catalysis Science Division, Institute for Open and Transdisciplinary Research Initiatives, Osaka University, 2-1 Yamada-oka, Suita, Osaka, 565-0871, Japan
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Li C, Guo M, Wang J, Shi Y, Xiang H, Yu G, Song Y, Guo T. Vesicular AuPd alloy nanowires for enhanced electrocatalytic activity. J Electroanal Chem (Lausanne) 2023. [DOI: 10.1016/j.jelechem.2023.117378] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/30/2023]
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Akiyoshi K, Watanabe Y, Kameyama T, Kawawaki T, Negishi Y, Kuwabata S, Torimoto T. Composition control of alloy nanoparticles consisting of bulk-immiscible Au and Rh metals via an ionic liquid/metal sputtering technique for improving their electrocatalytic activity. Phys Chem Chem Phys 2022; 24:24335-24344. [PMID: 36177988 DOI: 10.1039/d2cp01461k] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
AuRh bimetallic alloy nanoparticles (NPs) were successfully prepared by simultaneous sputtering of Au and Rh in a room-temperature ionic liquid (RTIL) of N,N-diethyl-N-methyl-N-(2-methoxyethyl) ammonium tetrafluoroborate (DEME-BF4). Bimetallic AuRh alloy NPs of 1-2 nm in size were formed in the RTIL. The alloy composition was controllable by changing the surface areas of Au and Rh plates used as sputtering targets. Loading thus-obtained AuRh NPs on carbon black (CB) powders increased the size of AuRh NPs to ca. 2-8 nm, depending on the Au/Rh ratio. The electrocatalytic activity for oxygen reduction reaction (ORR) of AuRh NP-loaded CB catalysts showed a volcano-type dependence on their composition, in which AuRh NPs with Au surface coverage of 62% exhibited the optimal ORR activity, the specific activity being ca. 5 times higher than that of pure Rh NPs.
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Affiliation(s)
- Kazutaka Akiyoshi
- Graduate School of Engineering, Nagoya University, Furo-cho, Chikusa-ku, Nagoya, 464-8603, Japan.
| | - Yumezo Watanabe
- Graduate School of Engineering, Nagoya University, Furo-cho, Chikusa-ku, Nagoya, 464-8603, Japan.
| | - Tatsuya Kameyama
- Graduate School of Engineering, Nagoya University, Furo-cho, Chikusa-ku, Nagoya, 464-8603, Japan.
| | - Tokuhisa Kawawaki
- Department of Applied Chemistry, Faculty of Science, Tokyo University of Science, Kagurazaka, Shinjuku-ku, Tokyo, 162-8601, Japan.,Research Institute for Science and 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 and Technology, Tokyo University of Science, Kagurazaka, Shinjuku-ku, Tokyo, 162-8601, Japan
| | - Susumu Kuwabata
- Graduate School of Engineering, Osaka University, 2-1 Yamada-oka, Suita, Osaka, 565-0871, Japan
| | - Tsukasa Torimoto
- Graduate School of Engineering, Nagoya University, Furo-cho, Chikusa-ku, Nagoya, 464-8603, Japan.
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Meischein M, Garzón-Manjón A, Hammerschmidt T, Xiao B, Zhang S, Abdellaoui L, Scheu C, Ludwig A. Elemental (im-)miscibility determines phase formation of multinary nanoparticles co-sputtered in ionic liquids. NANOSCALE ADVANCES 2022; 4:3855-3869. [PMID: 36133350 PMCID: PMC9470033 DOI: 10.1039/d2na00363e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/09/2022] [Accepted: 08/11/2022] [Indexed: 06/16/2023]
Abstract
Non-equilibrium synthesis methods allow the alloying of bulk-immiscible elements into multinary nanoparticles, which broadens the design space for new materials. Whereas sputtering onto solid substrates can combine immiscible elements into thin film solid solutions, this is not clear for sputtering of nanoparticles in ionic liquids. Thus, the suitability of sputtering in ionic liquids for producing nanoparticles of immiscible elements is investigated by co-sputtering the systems Au-Cu (miscible), Au-Ru and Cu-Ru (both immiscible), and Au-Cu-Ru on the surface of the ionic liquid 1-butyl-3-methylimidazolium bis(trifluoromethylsulfonyl)imide [Bmim][(Tf)2N]. The sputtered nanoparticles were analyzed to obtain (i) knowledge concerning the general formation process of nanoparticles when sputtering onto ionic liquid surfaces and (ii) information, if alloy nanoparticles of immiscible elements can be synthesized as well as (iii) evidence if the Hume-Rothery rules for solid solubility are valid for sputtered nanoparticles. Nanoparticle characteristics were found to depend on elemental miscibility: (1) nanoparticles from immiscible elemental combinations showed bigger mean diameters ranging from (3.3 ± 1.4) nm to (5.0 ± 1.7) nm in contrast to mean diameters of nanoparticles from elemental combinations with at least one miscible element pair ((1.7 ± 0.7) nm to (1.8 ± 0.6) nm). (2) Nanoparticles from immiscible combinations showed compositions with one element strongly dominating the ratio and very narrow differences between the highest and lowest fraction of the dominating element (Cu94Ru6 to Cu100Ru0; Au96Ru4 to Au99Ru1) in contrast to the other compositions (Au64Cu36 to Au81Cu19; Au83Cu13Ru4/Au75Cu22Ru3 to Au87Cu11Ru2). Accompanying atomistic simulations using density-functional theory for clusters of different size and ordering confirm that the miscibility of Au-Cu and the immiscibility of Au-Ru and Cu-Ru govern the thermodynamic stability of the nanoparticles. Based on the matching experimental and theoretical results for the NP/IL-systems concerning NP stability, a formation model of multinary NPs in ILs was developed.
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Affiliation(s)
- Michael Meischein
- Chair for Materials Discovery and Interfaces, Institute for Materials, Faculty of Mechanical Engineering, Ruhr University Bochum Universitätsstr. 150 D-44780 Bochum Germany
| | - Alba Garzón-Manjón
- Max-Planck-Institut für Eisenforschung GmbH Max-Planck-Straße 1 D-0237 Düsseldorf Germany
| | - Thomas Hammerschmidt
- Chair of Atomistic Modelling and Simulation, Interdisciplinary Centre for Advanced Materials Simulation (ICAMS), Ruhr University Bochum Universitätsstr. 150 D-44780 Bochum Germany
| | - Bin Xiao
- Chair for Materials Discovery and Interfaces, Institute for Materials, Faculty of Mechanical Engineering, Ruhr University Bochum Universitätsstr. 150 D-44780 Bochum Germany
| | - Siyuan Zhang
- Max-Planck-Institut für Eisenforschung GmbH Max-Planck-Straße 1 D-0237 Düsseldorf Germany
| | - Lamya Abdellaoui
- Max-Planck-Institut für Eisenforschung GmbH Max-Planck-Straße 1 D-0237 Düsseldorf Germany
| | - Christina Scheu
- Max-Planck-Institut für Eisenforschung GmbH Max-Planck-Straße 1 D-0237 Düsseldorf Germany
| | - Alfred Ludwig
- Chair for Materials Discovery and Interfaces, Institute for Materials, Faculty of Mechanical Engineering, Ruhr University Bochum Universitätsstr. 150 D-44780 Bochum Germany
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Agarwal S, Singh AK. Electroreduction of CO 2 with Tunable Selectivity on Au-Pd Bimetallic Catalyst: A First Principle Study. ACS APPLIED MATERIALS & INTERFACES 2022; 14:11313-11321. [PMID: 35199984 DOI: 10.1021/acsami.1c22399] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
The electroreduction of CO2 exhibits great promise in mitigating CO2 from the atmosphere. However, it is quite challenging to produce C1 products selectively on metal surfaces due to inefficient binding of CO with a metal surface. Here, using density functional theory, we studied an experimentally viable system of gold alloyed with a high CO-binding metal palladium. It is observed that the selectivity toward formic acid and methane can be tuned on Au-Pd bimetallic catalysts. Pd-rich alloy surfaces such as Pd deposited on the (211) surface of Au (Pd@Au) are found to be highly selective toward formic acid with an ultralow limiting potential of -0.23 V vs SHE. Interestingly, as the surface of the alloy become Au-rich, the selectivity toward methane increases. Among all the Au-Pd bimetallic systems, the Au-rich (211) surface of Au3Pd alloy has a very low limiting potential of -0.9 V vs SHE for CO2 electroreduction to methane. The selectivity toward methane on this surface is enhanced due to its optimum CO* binding and the ease of CO* protonation to CHO*. The higher feasibility of CO* protonation is a result of the stabilization of adsorbed CHO*. This stabilization is attributed to the interaction of both C and O of the CHO* molecule with the surface Au and Pd. It is found that the selectivity of a catalyst depends upon the stability of various intermediates, which can be regulated by modifying the composition of Au and Pd in the alloy. The results presented here demonstrate broad opportunities to tune the selectivity of the catalyst with varying alloy compositions, which will help to develop novel catalysts for CO2 electroreduction.
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Affiliation(s)
- Sakshi Agarwal
- Materials Research Centre, Indian Institute of Science, Bangalore, Karnataka 560012, India
| | - Abhishek K Singh
- Materials Research Centre, Indian Institute of Science, Bangalore, Karnataka 560012, India
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Shetty S, Gayen M, Agarwal S, Chatterjee D, Singh A, Ravishankar N. Tuning Catalytic Activity in Ultrathin Bimetallic Nanowires via Surface Segregation: Some Insights. J Phys Chem Lett 2022; 13:770-776. [PMID: 35041416 DOI: 10.1021/acs.jpclett.1c03852] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
The efficiency of heterogeneous catalysts critically depends on the nature of the surface. We present results on controlling the composition in ultrathin bimetallic AuPd. AuPd wires were grown using Au nanowire templates; the surface composition could be tuned by increasing the amount of Pd. Further, segregation of Pd to the surface could be induced in alloyed nanowires by annealing under a controlled CO atmosphere. Electrocatalytic activity of these bimetallic systems is assessed for the methanol oxidation reaction (MOR). While the MOR potential shows a monotonic increase with Pd content, the specific activity displays a typical volcano-type behavior. The CO-annealed nanowires show a lowering of potential owing to a higher Pd content on the surface while still maintaining the specific activity. These findings provide clear strategies to independently control the reaction potential and the activities of nanocatalysts. The experimental findings are well supported by the theoretical investigations using density functional theory (DFT) calculations.
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Affiliation(s)
- Shwetha Shetty
- Materials Research Centre, Indian Institute of Science, Bangalore 560012, India
| | - Meghabarna Gayen
- Materials Research Centre, Indian Institute of Science, Bangalore 560012, India
| | - Sakshi Agarwal
- Materials Research Centre, Indian Institute of Science, Bangalore 560012, India
| | | | - Abhishek Singh
- Materials Research Centre, Indian Institute of Science, Bangalore 560012, India
| | - N Ravishankar
- Materials Research Centre, Indian Institute of Science, Bangalore 560012, India
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Sergievskaya A, Chauvin A, Konstantinidis S. Sputtering onto liquids: a critical review. BEILSTEIN JOURNAL OF NANOTECHNOLOGY 2022; 13:10-53. [PMID: 35059275 PMCID: PMC8744456 DOI: 10.3762/bjnano.13.2] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/28/2021] [Accepted: 12/07/2021] [Indexed: 05/03/2023]
Abstract
Sputter deposition of atoms onto liquid substrates aims at producing colloidal dispersions of small monodisperse ultrapure nanoparticles (NPs). Since sputtering onto liquids combines the advantages of the physical vapor deposition technique and classical colloidal synthesis, the review contains chapters explaining the basics of (magnetron) sputter deposition and the formation of NPs in solution. This review article covers more than 132 papers published on this topic from 1996 to September 2021 and aims at providing a critical analysis of most of the reported data; we will address the influence of the sputtering parameters (sputter power, current, voltage, sputter time, working gas pressure, and the type of sputtering plasma) and host liquid properties (composition, temperature, viscosity, and surface tension) on the NP formation as well as a detailed overview of the properties and applications of the produced NPs.
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Affiliation(s)
- Anastasiya Sergievskaya
- Plasma-Surface Interaction Chemistry (ChIPS), University of Mons, 23 Place du Parc, B-7000 Mons, Belgium
| | - Adrien Chauvin
- Plasma-Surface Interaction Chemistry (ChIPS), University of Mons, 23 Place du Parc, B-7000 Mons, Belgium
- Department of Condensed Matter Physics, Faculty of Mathematics and Physics, Charles University, Ke Karlovu 5, 121 16 Praha 2, Czech Republic
| | - Stephanos Konstantinidis
- Plasma-Surface Interaction Chemistry (ChIPS), University of Mons, 23 Place du Parc, B-7000 Mons, Belgium
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Nguyen MT, Deng L, Yonezawa T. Control of nanoparticles synthesized via vacuum sputter deposition onto liquids: a review. SOFT MATTER 2021; 18:19-47. [PMID: 34901989 DOI: 10.1039/d1sm01002f] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/25/2023]
Abstract
Sputter deposition onto a low volatile liquid matrix is a recently developed green synthesis method for metal/metal oxide nanoparticles (NPs). In this review, we introduce the synthesis method and highlight its unique features emerging from the combination of the sputter deposition and the ability of the liquid matrix to regulate particle growth. Then, manipulating the synthesis parameters to control the particle size, composition, morphology, and crystal structure of NPs is presented. Subsequently, we evaluate the key experimental factors governing the particle characteristics and the formation of monometallic and alloy NPs to provide overall directions and insights into the preparation of NPs with desired properties. Following that, the current understanding of the growth and formation mechanism of sputtered particles in liquid media, in particular, ionic liquids and liquid polymers, during and after sputtering is emphasized. Finally, we discuss the challenges that remain and share our perspectives on the future prospects of the synthesis method and the obtained NPs.
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Affiliation(s)
- Mai Thanh Nguyen
- Division of Materials Science and Engineering, Faculty of Engineering, Hokkaido University, Kita 13 Nishi 8, Kita-ku, Sapporo, Hokkaido 060-8628, Japan.
| | - Lianlian Deng
- Division of Materials Science and Engineering, Faculty of Engineering, Hokkaido University, Kita 13 Nishi 8, Kita-ku, Sapporo, Hokkaido 060-8628, Japan.
| | - Tetsu Yonezawa
- Division of Materials Science and Engineering, Faculty of Engineering, Hokkaido University, Kita 13 Nishi 8, Kita-ku, Sapporo, Hokkaido 060-8628, Japan.
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YOSHII K. Electrodeposition of Metals and Preparation of Metal Nanoparticles in Nonaqueous Electrolytes and Their Application to Energy Devices. ELECTROCHEMISTRY 2021. [DOI: 10.5796/electrochemistry.21-00078] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Affiliation(s)
- Kazuki YOSHII
- Research Institute of Electrochemical Energy (RIECEN), Department of Energy and Environment, National Institute of Advanced Industrial Science and Technology (AIST)
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Seitkalieva MM, Samoylenko DE, Lotsman KA, Rodygin KS, Ananikov VP. Metal nanoparticles in ionic liquids: Synthesis and catalytic applications. Coord Chem Rev 2021. [DOI: 10.1016/j.ccr.2021.213982] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
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Zhu M, Nguyen MT, Chau YTR, Deng L, Yonezawa T. Pt/Ag Solid Solution Alloy Nanoparticles in Miscibility Gaps Synthesized by Cosputtering onto Liquid Polymers. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2021; 37:6096-6105. [PMID: 33960790 DOI: 10.1021/acs.langmuir.1c00916] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/20/2023]
Abstract
Pt/Ag solid solution alloy nanoparticles (NPs) with mean size below 3 nm were obtained with composition in miscibility gaps by cosputtering onto liquid polyethylene glycol (PEG, MW = 600). Adjusting the sputtering currents from 10 to 50 mA did not influence the particle sizes obviously but caused a substantial difference in the composition and distributions of Pt/Ag NPs. This is different from sputtered Pt/Au NPs where particle size is correlated with composition. For a pair of sputtering currents, the formed Pt/Ag alloy NPs have a range of compositions. The normal distribution with Pt of 60.2 ± 16.2 at % is observed for the Pt/Ag sample with a nominal Pt content of 55.9 at %, whereas Pt-rich (85.1 ± 14.0 at % Pt) and Ag-rich (19.8 ± 12.2 at % Pt) Pt/Ag samples with nominal Pt contents of 90.9 and 11.9 at % contain more pure Pt and pure Ag NPs, respectively. Different from NPs obtained in PEG, the sputtered NPs on TEM grids had more uniform composition for a longer sputtering time along with a significant increase of particle sizes. This reveals that PEG hindered the combination of NPs and clusters, resulting in small particle sizes even for long time sputtering and broader composition distributions. Thus, the samples obtained in PEG have the compositions mainly determined by the random atom combination in the vacuum chamber and possibly in initial landing of atom/clusters on the PEG surface.
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Affiliation(s)
- Mingbei Zhu
- Division of Materials Science and Engineering, Faculty of Engineering, Hokkaido University, Kita 13 Nishi 8, Kita-ku, Sapporo, Hokkaido 060-8628, Japan
| | - Mai Thanh Nguyen
- Division of Materials Science and Engineering, Faculty of Engineering, Hokkaido University, Kita 13 Nishi 8, Kita-ku, Sapporo, Hokkaido 060-8628, Japan
| | - Yuen-Ting Rachel Chau
- Division of Materials Science and Engineering, Faculty of Engineering, Hokkaido University, Kita 13 Nishi 8, Kita-ku, Sapporo, Hokkaido 060-8628, Japan
| | - Lianlian Deng
- Division of Materials Science and Engineering, Faculty of Engineering, Hokkaido University, Kita 13 Nishi 8, Kita-ku, Sapporo, Hokkaido 060-8628, Japan
| | - Tetsu Yonezawa
- Division of Materials Science and Engineering, Faculty of Engineering, Hokkaido University, Kita 13 Nishi 8, Kita-ku, Sapporo, Hokkaido 060-8628, Japan
- Institute of Business-Regional Collaboration, Hokkaido University, Kita 21 Nishi 11, Kita-ku, Sapporo, Hokkaido 001-0021, Japan
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Chakraborty D, Devi M, Das B, Barbhuiya MH, Dhar SS, Chowdhury A. A benevolent direction to environmental suitability: ionic liquid immobilized MoO 3 nanoparticles used in the efficient visible light-driven photocatalytic degradation of antibiotics. NEW J CHEM 2021. [DOI: 10.1039/d1nj01557e] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
This paper summarizes the synthesis of a novel MoO3-bonded imidazolium sulfonic acid chloride (MoO3-IL) using a facile precipitation method and its application in the degradation of two organic pollutants.
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Affiliation(s)
| | - Meghali Devi
- Department of Chemistry, National Institute of Technology, Silchar
- Cachar
- India
| | - Bishal Das
- Department of Chemistry, National Institute of Technology, Silchar
- Cachar
- India
| | - Monjur H. Barbhuiya
- Department of Chemistry, National Institute of Technology, Silchar
- Cachar
- India
| | - Siddhartha S. Dhar
- Department of Chemistry, National Institute of Technology, Silchar
- Cachar
- India
| | - Avijit Chowdhury
- Department of Physics
- National Institute of Technology
- Cachar
- India
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Deng L, Nguyen MT, Shi J, Chau YTR, Tokunaga T, Kudo M, Matsumura S, Hashimoto N, Yonezawa T. Highly Correlated Size and Composition of Pt/Au Alloy Nanoparticles via Magnetron Sputtering onto Liquid. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2020; 36:3004-3015. [PMID: 32150418 DOI: 10.1021/acs.langmuir.0c00152] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/20/2023]
Abstract
Pt/Au alloy nanoparticles (NPs) in a wide composition range have been synthesized by room-temperature simultaneous sputter deposition from two independent magnetron sources onto liquid PEG (MW = 600). The prepared NPs were alloyed with the face-centered cubic (fcc) structure. In addition, the particle sizes, composition, and shape are strongly correlated but can be tailored by an appropriate variation of the sputtering parameters. No individual particle but large agglomerates with partial alloy structure formed at Pt content of less than 16 atom %. Highly dispersed NPs with no agglomeration were observed in PEG when the quantity of Pt is more than 26 atom %. On the other hand, a small amount of Pt could terminate the agglomeration of Au when sputtering on the grids for transmission electron microscope observation. Our experiment and computer simulation carried out by two different methods indicate that the composition-dependent particle size of Pt/Au can be explained by the atomic concentration, formation energy of the cluster, and interaction between different metal atoms and the PEG molecule.
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Affiliation(s)
- Lianlian Deng
- Division of Materials Science and Engineering, Faculty of Engineering, Hokkaido University, Kita 13 Nishi 8, Kita-ku, Sapporo, Hokkaido 060-8628, Japan
| | - Mai Thanh Nguyen
- Division of Materials Science and Engineering, Faculty of Engineering, Hokkaido University, Kita 13 Nishi 8, Kita-ku, Sapporo, Hokkaido 060-8628, Japan
| | - Jingming Shi
- Division of Materials Science and Engineering, Faculty of Engineering, Hokkaido University, Kita 13 Nishi 8, Kita-ku, Sapporo, Hokkaido 060-8628, Japan
| | - Yuen-Ting Rachel Chau
- Division of Materials Science and Engineering, Faculty of Engineering, Hokkaido University, Kita 13 Nishi 8, Kita-ku, Sapporo, Hokkaido 060-8628, Japan
| | - Tomoharu Tokunaga
- Institute of Materials and Systems for Sustainability, Nagoya University, Furo-cho, Chikusa-ku, Nagoya 464-8603, Japan
| | | | | | - Naoyuki Hashimoto
- Division of Materials Science and Engineering, Faculty of Engineering, Hokkaido University, Kita 13 Nishi 8, Kita-ku, Sapporo, Hokkaido 060-8628, Japan
| | - Tetsu Yonezawa
- Division of Materials Science and Engineering, Faculty of Engineering, Hokkaido University, Kita 13 Nishi 8, Kita-ku, Sapporo, Hokkaido 060-8628, Japan
- Institute for the Promotion of Business-Regional Collaboration, Hokkaido University, Kita 21 Nishi 11, Kita-ku, Sapporo, Hokkaido 001-0021, Japan
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On the Effects of Diluted and Mixed Ionic Liquids as Liquid Substrates for the Sputter Synthesis of Nanoparticles. NANOMATERIALS 2020; 10:nano10030525. [PMID: 32183305 PMCID: PMC7153607 DOI: 10.3390/nano10030525] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/20/2020] [Revised: 03/09/2020] [Accepted: 03/12/2020] [Indexed: 02/01/2023]
Abstract
The synthesis of nanoparticles by combinatorial sputtering in ionic liquids is a versatile approach for discovering new materials. Whereas the influence on nanoparticle formation of different pure ionic liquids has been addressed, the influence of (I) dilution of ionic liquid with solvents and (II) different mixtures of ionic liquids is less known. Therefore, mixtures of the ionic liquid [Bmim][(Tf)2N] with the organic solvent anisole and other ionic liquids ([Bmim][(Pf)2N], [BmPyr][(Tf)2N]) were used as liquid substrates for the sputter synthesis of nanoparticles, in order to investigate the influence of these mixtures on the size of the nanoparticles. First, mixtures of anisole with a suspension of sputtered Ag nanoparticles in [Bmim][(Tf)2N] were prepared in different volumetric steps to investigate if the stabilization of the NPs by the ionic liquid could be reduced by the solvent. However, a continuous reduction in nanoparticle size and amount with increasing anisole volume was observed. Second, Ag, Au and Cu were sputtered on ionic liquid mixtures. Ag nanoparticles in [Bmim][(Tf)2N]/[Bmim][(Pf)2N] mixtures showed a decrease in size with the increasing volumetric fraction of [Bmim][(Tf)2N], whereas all nanoparticles obtained from [Bmim][(Tf)2N]/[BmPyr][(Tf)2N] mixtures showed increasing size and broadening of the size distribution. Maximum sizes of sputtered Ag and Au NPs were reached in mixtures of [Bmim][(Tf)2N] with 20 vol.% and 40 vol.% [BmPyr][(Tf)2N]. The results indicate that ionic liquid mixtures with different portions of cations and anions have the capability of influencing the ionic liquid stabilization characteristics with respect to, e.g., nanoparticle size and size distribution.
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Chau YTR, Nguyen MT, Zhu M, Romier A, Tokunaga T, Yonezawa T. Synthesis of composition-tunable Pd–Cu alloy nanoparticles by double target sputtering. NEW J CHEM 2020. [DOI: 10.1039/d0nj00288g] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
In this work, we introduce a green synthesis technique, double-target sputtering into a liquid polymer – polyethylene glycol (PEG, M. W. = 600), to synthesize palladium–copper (Pd–Cu) alloy nanoparticles (NPs) dispersed in PEG.
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Affiliation(s)
- Yuen-ting Rachel Chau
- Division of Materials and Engineering
- Faculty of Engineering
- Hokkaido University
- Hokkaido 060-8628
- Japan
| | - Mai Thanh Nguyen
- Division of Materials and Engineering
- Faculty of Engineering
- Hokkaido University
- Hokkaido 060-8628
- Japan
| | - Mingbei Zhu
- Division of Materials and Engineering
- Faculty of Engineering
- Hokkaido University
- Hokkaido 060-8628
- Japan
| | - Arnaud Romier
- Division of Materials and Engineering
- Faculty of Engineering
- Hokkaido University
- Hokkaido 060-8628
- Japan
| | - Tomoharu Tokunaga
- Institute of Materials and Systems for Sustainability
- Nagoya University
- Furo-cho
- Chikusa-ku
- Nagoya 464-8601
| | - Tetsu Yonezawa
- Division of Materials and Engineering
- Faculty of Engineering
- Hokkaido University
- Hokkaido 060-8628
- Japan
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17
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Meischein M, Garzón-Manjón A, Frohn T, Meyer H, Salomon S, Scheu C, Ludwig A. Combinatorial Synthesis of Binary Nanoparticles in Ionic Liquids by Cosputtering and Mixing of Elemental Nanoparticles. ACS COMBINATORIAL SCIENCE 2019; 21:743-752. [PMID: 31614084 DOI: 10.1021/acscombsci.9b00140] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Binary alloy nanoparticles were fabricated by two combinatorial methods: (I) cosputtering from elemental targets into the ionic liquid 1-butyl-3-methylimidazolium bis(trifluoromethylsulfonyl)imide [Bmim][(Tf)2N] and (II) by mixing elemental nanoparticles after sputtering them separately into [Bmim][(Tf)2N]. Both methods lead to the formation of Au-Cu nanoparticles (2.3 nm for cosputtered, 3.6 nm for mixed), however with different resulting compositions: cosputtered nanoparticles show a composition range of Au80-90Cu20-10; mixing of Au- and Cu-loaded ionic liquids leads to the formation of Au75Cu25 nanoparticles. Annealing the binary nanoparticles at 100 °C shows that the mixed nanoparticles grow to sizes of 4.1 nm, whereas the cosputtered nanoparticles grow only to 3 nm.
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Affiliation(s)
- Michael Meischein
- Chair for Materials Discovery and Interfaces, Institute for Materials, Faculty of Mechanical Engineering, Ruhr University Bochum, Universitätsstr. 150, D-44780 Bochum, Germany
| | - Alba Garzón-Manjón
- Max-Planck-Institut für Eisenforschung GmbH, Max-Planck-Straße 1, D-40237 Düsseldorf, Germany
| | - Thomas Frohn
- Chair for Materials Discovery and Interfaces, Institute for Materials, Faculty of Mechanical Engineering, Ruhr University Bochum, Universitätsstr. 150, D-44780 Bochum, Germany
| | - Hajo Meyer
- Chair for Materials Discovery and Interfaces, Institute for Materials, Faculty of Mechanical Engineering, Ruhr University Bochum, Universitätsstr. 150, D-44780 Bochum, Germany
| | - Steffen Salomon
- Chair for Materials Discovery and Interfaces, Institute for Materials, Faculty of Mechanical Engineering, Ruhr University Bochum, Universitätsstr. 150, D-44780 Bochum, Germany
| | - Christina Scheu
- Max-Planck-Institut für Eisenforschung GmbH, Max-Planck-Straße 1, D-40237 Düsseldorf, Germany
| | - Alfred Ludwig
- Chair for Materials Discovery and Interfaces, Institute for Materials, Faculty of Mechanical Engineering, Ruhr University Bochum, Universitätsstr. 150, D-44780 Bochum, Germany
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18
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Deng L, Nguyen MT, Mei S, Tokunaga T, Kudo M, Matsumura S, Yonezawa T. Preparation and Growth Mechanism of Pt/Cu Alloy Nanoparticles by Sputter Deposition onto a Liquid Polymer. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2019; 35:8418-8427. [PMID: 31194557 DOI: 10.1021/acs.langmuir.9b01112] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/20/2023]
Abstract
We use a green sputtering technique to deposit a Pt/Cu alloy target on liquid polyethylene glycol (PEG) to obtain well-dispersed and stable Pt29Cu71 alloy nanoparticles (NPs). The effects of sputtering current, rotation speed of the stirrer, sputtering time, sputtering period, and temperature of PEG on the particle size are studied systematically. Our key results demonstrate that the aggregation and growth of Pt/Cu alloy NPs occurred at the surface as well as inside the liquid polymer after the particles landed on the liquid surface. According to particle size analysis, a low sputtering current, high rotation speed for the stirrer, short sputtering period, and short sputtering time are found to be favorable for producing small-sized single crystalline alloy NPs. On the other hand, varying the temperature of the liquid PEG does not have any significant impact on the particle size. Thus, our findings shed light on controlling NP growth using the newly developed green sputtering deposition technique.
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Affiliation(s)
- Lianlian Deng
- Division of Materials Science and Engineering, Faculty of Engineering , Hokkaido University , Kita 13 Nishi 8, Kita-ku , Sapporo , Hokkaido 060-8628 , Japan
| | - Mai Thanh Nguyen
- Division of Materials Science and Engineering, Faculty of Engineering , Hokkaido University , Kita 13 Nishi 8, Kita-ku , Sapporo , Hokkaido 060-8628 , Japan
| | - Shuang Mei
- Division of Materials Science and Engineering, Faculty of Engineering , Hokkaido University , Kita 13 Nishi 8, Kita-ku , Sapporo , Hokkaido 060-8628 , Japan
| | - Tomoharu Tokunaga
- Department of Materials Design Innovation Engineering , Graduate School of Engineering , Nagoya University, Furo-cho, Chikusa-ku , Nagoya 464-8603 , Japan
| | | | | | - Tetsu Yonezawa
- Division of Materials Science and Engineering, Faculty of Engineering , Hokkaido University , Kita 13 Nishi 8, Kita-ku , Sapporo , Hokkaido 060-8628 , Japan
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19
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20
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Shiba S, Maruyama R, Kamata T, Kato D, Niwa O. Chromatographic Determination of Sugar Probes Used for Gastrointestinal Permeability Test by Employing Nickel-Copper Nanoalloy Embedded in Carbon Film Electrodes. ELECTROANAL 2018. [DOI: 10.1002/elan.201800072] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Shunsuke Shiba
- Advanced Science Research Laboratory; Saitama Institute of Technology, Fusaiji, 1690, Fukaya; Saitama 369-0293 Japan
- National Institute of Advanced Industrial Science and Technology (AIST), 1-1-1, Higashi, Tsukuba; Ibaraki 305-8566 Japan
- Graduate School of Pure and Applied Sciences; University of Tsukuba, 1-1-1 Tennodai, Tsukuba; Ibaraki 305-8573 Japan
| | - Rina Maruyama
- Advanced Science Research Laboratory; Saitama Institute of Technology, Fusaiji, 1690, Fukaya; Saitama 369-0293 Japan
| | - Tomoyuki Kamata
- National Institute of Advanced Industrial Science and Technology (AIST), 1-1-1, Higashi, Tsukuba; Ibaraki 305-8566 Japan
| | - Dai Kato
- National Institute of Advanced Industrial Science and Technology (AIST), 1-1-1, Higashi, Tsukuba; Ibaraki 305-8566 Japan
| | - Osamu Niwa
- Advanced Science Research Laboratory; Saitama Institute of Technology, Fusaiji, 1690, Fukaya; Saitama 369-0293 Japan
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21
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Chatterjee D, Shetty S, Müller-Caspary K, Grieb T, Krause FF, Schowalter M, Rosenauer A, Ravishankar N. Ultrathin Au-Alloy Nanowires at the Liquid-Liquid Interface. NANO LETTERS 2018; 18:1903-1907. [PMID: 29397751 DOI: 10.1021/acs.nanolett.7b05217] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Ultrathin bimetallic nanowires are of importance and interest for applications in electronic devices such as sensors and heterogeneous catalysts. In this work, we have designed a new, highly reproducible and generalized wet chemical method to synthesize uniform and monodispersed Au-based alloy (AuCu, AuPd, and AuPt) nanowires with tunable composition using microwave-assisted reduction at the liquid-liquid interface. These ultrathin alloy nanowires are below 4 nm in diameter and about 2 μm long. Detailed microstructural characterization shows that the wires have an face centred cubic (FCC) crystal structure, and they have low-energy twin-boundary and stacking-fault defects along the growth direction. The wires exhibit remarkable thermal and mechanical stability that is critical for important applications. The alloy wires exhibit excellent electrocatalytic activity for methanol oxidation in an alkaline medium.
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Affiliation(s)
- Dipanwita Chatterjee
- Materials Research Centre , Indian Institute of Science , Bangalore 560012 , India
| | - Shwetha Shetty
- Materials Research Centre , Indian Institute of Science , Bangalore 560012 , India
| | | | - Tim Grieb
- University of Bremen , Otto-Hahn-Allee 1 , D-28359 Bremen , Germany
| | - Florian F Krause
- University of Bremen , Otto-Hahn-Allee 1 , D-28359 Bremen , Germany
| | - Marco Schowalter
- University of Bremen , Otto-Hahn-Allee 1 , D-28359 Bremen , Germany
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22
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Nguyen MT, Zhang H, Deng L, Tokunaga T, Yonezawa T. Au/Cu Bimetallic Nanoparticles via Double-Target Sputtering onto a Liquid Polymer. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2017; 33:12389-12397. [PMID: 28972375 DOI: 10.1021/acs.langmuir.7b03194] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/20/2023]
Abstract
Alloy nanoparticles (NPs) of a bimetal system, Au/Cu, that form intermetallic compounds in a bulk state have been successfully produced using a double-target sputtering technique onto a low-cost and biocompatible liquid polymer (polyethylene glycol, PEG). The formation of an Au/Cu solid solution alloy in individual NPs was revealed by scanning transmission electron microscopy-energy-dispersive X-ray elemental mapping analysis. Altering the sputter currents for Au and Cu targets resulted in a tailored NP composition, but the particle sizes did not significantly vary. We found similar structures, sizes, and optical properties of Au/Cu NPs obtained by double-head sputtering on carbon-coated transmission electron microscopy grids or PEG and by Au/Cu alloy target sputtering. Random alloy formation occurred in matrix sputtering using double-target heads. This method is advantageous for manipulating the alloy composition through highly independent control of sputter parameters for each metal target.
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Affiliation(s)
- Mai Thanh Nguyen
- Division of Materials Science and Engineering, Faculty of Engineering, Hokkaido University , Kita 13 Nishi 8, Kita-ku, Sapporo 060-8628, Japan
| | - Hong Zhang
- Division of Materials Science and Engineering, Faculty of Engineering, Hokkaido University , Kita 13 Nishi 8, Kita-ku, Sapporo 060-8628, Japan
| | - Lianlian Deng
- Division of Materials Science and Engineering, Faculty of Engineering, Hokkaido University , Kita 13 Nishi 8, Kita-ku, Sapporo 060-8628, Japan
| | - Tomoharu Tokunaga
- Department of Quantum Engineering, Graduate School of Engineering, Nagoya University , Furo-cho, Chikusa-ku, Nagoya 464-8603, Japan
| | - Tetsu Yonezawa
- Division of Materials Science and Engineering, Faculty of Engineering, Hokkaido University , Kita 13 Nishi 8, Kita-ku, Sapporo 060-8628, Japan
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23
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Nishijima Y, Shimizu S, Kurihara K, Hashimoto Y, Takahashi H, Balčytis A, Seniutinas G, Okazaki S, Juodkazytė J, Iwasa T, Taketsugu T, Tominaga Y, Juodkazis S. Optical readout of hydrogen storage in films of Au and Pd. OPTICS EXPRESS 2017; 25:24081-24092. [PMID: 29041355 DOI: 10.1364/oe.25.024081] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/04/2017] [Accepted: 09/15/2017] [Indexed: 06/07/2023]
Abstract
For hydrogen sensor and storage applications, films of Au and Pd were (i) co-sputtered at different rates or (ii) deposited in a sequentially alternating fashion to create a layered structure on a cover glass. Peculiarities of hydrogen uptake and release were optically monitored using 1.3 μm wavelength light. Increase of optical transmission was observed for hydrogenated Pd-rich films of 10-30 nm thickness. Up to a three times slower hydrogen release took place as compared with the hydrogen uptake. Compositional ratio of Au:Pd and thermal treatment of films provided control over the optical extinction changes and hydrogen uptake/release time constants. Higher uptake and release rates were observed in the annealed Au:Pd films as compared to those deposited at room temperature and were faster for the Auricher films. Three main parameters relevant for sensors: sensitivity, selectivity, stability (reproducibility) are discussed together with the hydrogenation mechanism in Au:Pd alloys.
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25
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Hamada T, Sugioka D, Kameyama T, Kuwabata S, Torimoto T. Electrocatalytic Activity of Bimetallic Pd-Au Particle Films Prepared by Sequential Sputter Deposition of Pd and Au onto Hydroxyl-functionalized Ionic Liquid. CHEM LETT 2017. [DOI: 10.1246/cl.170242] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Affiliation(s)
- Takashi Hamada
- Graduate School of Engineering, Nagoya University, Chikusa-ku, Nagoya, Aichi 464-8603
| | - Daisuke Sugioka
- Graduate School of Engineering, Nagoya University, Chikusa-ku, Nagoya, Aichi 464-8603
| | - Tatsuya Kameyama
- Graduate School of Engineering, Nagoya University, Chikusa-ku, Nagoya, Aichi 464-8603
| | - Susumu Kuwabata
- Graduate School of Engineering, Osaka University, Suita, Osaka 565-0871
| | - Tsukasa Torimoto
- Graduate School of Engineering, Nagoya University, Chikusa-ku, Nagoya, Aichi 464-8603
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26
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Sugioka D, Kameyama T, Kuwabata S, Yamamoto T, Torimoto T. Formation of a Pt-Decorated Au Nanoparticle Monolayer Floating on an Ionic Liquid by the Ionic Liquid/Metal Sputtering Method and Tunable Electrocatalytic Activities of the Resulting Monolayer. ACS APPLIED MATERIALS & INTERFACES 2016; 8:10874-83. [PMID: 27074631 DOI: 10.1021/acsami.6b01978] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/20/2023]
Abstract
A novel strategy to prepare a bimetallic Au-Pt particle film was developed through sequential sputter deposition of Au and Pt on a room temperature ionic liquid (RTIL). Au sputter deposition onto an RTIL containing hydroxyl-functionalized cations produced a monolayer of Au particles 4.2 nm in size on the liquid surface. Subsequent Pt sputtering onto the original Au particle monolayer floating on the RTIL enabled decoration of individual Au particles with Pt metals, resulting in the formation of a bimetallic Au-Pt particle monolayer with a Pt-enriched particle surface. The particle size slightly increased to 4.8 nm with Pt deposition for 120 min. The shell layer of a bimetallic particle was composed of Au-Pt alloy, the composition of which was tunable by controlling the Pt sputter deposition time. The electrochemical surface area (ECSA) was determined by cyclic voltammetry of bimetallic Au-Pt particle monolayers transferred onto HOPG electrodes by a horizontal liftoff method. The Pt surface coverage, determined by ECSAs of Au and Pt, increased from 0 to 56 mol % with elapse of the Pt sputter deposition time up to 120 min. Thus-obtained Au-Pt particle films exhibited electrocatalytic activity for methanol oxidation reaction (MOR) superior to the activities of pure Au or Pt particles. Volcano-type dependence was observed between the MOR activity and Pt surface coverage on the particles. Maximum activity was obtained for Au-Pt particles with a Pt coverage of 49 mol %, being ca. 120 times higher than that of pure Pt particles. This method enables direct decoration of metal particles with different noble metal atoms, providing a novel strategy to develop highly efficient multinary particle catalysts.
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Affiliation(s)
- Daisuke Sugioka
- Graduate School of Engineering, Nagoya University , Chikusa-ku, Nagoya, Aichi 464-8603, Japan
| | - Tatsuya Kameyama
- Graduate School of Engineering, Nagoya University , Chikusa-ku, Nagoya, Aichi 464-8603, Japan
| | - Susumu Kuwabata
- Graduate School of Engineering, Osaka University , 2-1 Yamada-oka, Suita, Osaka 565-0871, Japan
| | - Takahisa Yamamoto
- Graduate School of Engineering, Nagoya University , Chikusa-ku, Nagoya, Aichi 464-8603, Japan
| | - Tsukasa Torimoto
- Graduate School of Engineering, Nagoya University , Chikusa-ku, Nagoya, Aichi 464-8603, Japan
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27
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Moakhar RS, Hariri MB, Kushwaha A, Dolati A, Ghorbani M, Goh GKL. Au-Pd Bimetallic Nanoparticle Electrodes for Direct Electroreduction of Hexavalent Chromium Complexes. Aust J Chem 2016. [DOI: 10.1071/ch15660] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
This paper reports a simple, low-cost, and effective electrochemical technique for sensing and reducing CrVI based on a Au-Pd bimetallic nanoparticle (BNP)-decorated indium tin oxide (ITO) conducting glass electrode. It was observed that the Au-Pd BNP-decorated ITO electrode could significantly boost the electrochemical reduction of CrVI when compared with either Au nanoparticle- or Pd nanoparticle-decorated ITO electrodes. These BNP-decorated electrodes exhibited a wide linear concentration range of 0.001–100 μM, a very low detection limit (signal-to-noise ratio = 3) of 0.3 nM, and a high sensitivity of 1.701 μA μM–1. From electrochemical impedance spectroscopy, it was revealed that this significant improvement was mainly due to the reduction in the charge-transfer resistance, which leads to faster free exchange of the reaction intermediates. The proposed Au-Pd BNP electrode also demonstrated excellent stability, selectivity, repeatability, and reproducibility.
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28
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Mehl S, Toghan A, Bauer T, Brummel O, Taccardi N, Wasserscheid P, Libuda J. Pd Nanoparticle Formation in Ionic Liquid Thin Films Monitored by in situ Vibrational Spectroscopy. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2015; 31:12126-12139. [PMID: 26479118 DOI: 10.1021/acs.langmuir.5b03386] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
Ionic liquids (ILs) are flexible reaction media and solvents for the synthesis of metal nanoparticles (NPs). Here, we describe a new preparation method for metallic NPs in nanometer thick films of ultraclean ILs in an ultrahigh vacuum (UHV) environment. CO-covered Pd NPs are formed by simultaneous and by sequential physical vapor deposition (PVD) of the IL and the metal in the presence of low partial pressures of CO. The film thickness and the particle size can be controlled by the deposition parameters. We followed the formation of the NPs and their thermal behavior by time-resolved IR reflection absorption spectroscopy (TP-IRAS) and by temperature-programmed IRAS (TR-IRAS). Codeposition of Pd and [C1C2Im][OTf] in CO at 100 K leads to the growth of homogeneous multilayer films of CO-covered Pd aggregates in an IL matrix. The size of these NPs can be controlled by the metal fraction in the co-deposit. With increasing metal fraction, the size of the Pd NPs also increases. At very low metal content, small Pd carbonyl-like species are formed, which bind CO in on-top geometry only. Upon annealing, the [OTf](-) anion coadsorbs at the NP surface and partially displaces CO. Co-adsorption of CO and IL is indicated by a strong red-shift of the CO stretching bands. While the weakly bound on-top CO is mainly replaced below the melting transition of the IL, coadsorbate shells with bridge-bonded CO and IL are stable well above the melting point. Larger three-dimensional Pd NPs can be prepared by PVD of Pd onto a solid [C1C2Im][OTf] film at 100 K. Upon annealing, on-top CO desorbs from these NPs below 200 K. Upon melting of the IL film, the CO-covered Pd NPs immerse into the IL and again form a stable coadsorbate shell that consists of bridge-bonded CO and the IL.
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Affiliation(s)
| | - Arafat Toghan
- Chemistry Department, Faculty of Science, South Valley University , 83523 Qena, Egypt
| | | | | | | | - Peter Wasserscheid
- Erlangen Catalysis Resource Center and Interdisciplinary Center Interface-Controlled Processes, Friedrich-Alexander-Universität Erlangen-Nürnberg , 91058 Erlangen, Germany
| | - Jörg Libuda
- Erlangen Catalysis Resource Center and Interdisciplinary Center Interface-Controlled Processes, Friedrich-Alexander-Universität Erlangen-Nürnberg , 91058 Erlangen, Germany
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Tripathi RM, Gupta RK, Bhadwal AS, Singh P, Shrivastav A, Shrivastav BR. Fungal biomolecules assisted biosynthesis of Au-Ag alloy nanoparticles and evaluation of their catalytic property. IET Nanobiotechnol 2015. [PMID: 26224346 DOI: 10.1049/iet-nbt.2014.0043] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022] Open
Abstract
The catalytic reduction of methylene blue was studied using biosynthesised gold-silver (Au-Ag) alloy nanoparticles (NPs). The fungal biomass of Trichoderma harzianum was used as a reducing and stabilising agent in the synthesis of Au-Ag alloy NPs. The synthesised NPs were well characterised by UV-vis spectroscopy, dynamic light scattering, X-ray diffraction, transmission electron microscopy, energy dispersive X-ray spectroscopy and Fourier transform infrared spectroscopy. The plausible synthesis mechanism involved in the formation of Au-Ag alloy NPs was also discussed with diagrammatic representation. A series of experiments was performed to investigate the catalytic activity of the as-prepared Au-Ag alloy NPs and found that the alloy NPs show excellent catalytic activity.
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Affiliation(s)
- Ravi Mani Tripathi
- Amity Institute of Nanotechnology, Amity University, Sector-125, Noida 201303, UP, India.
| | - Rohit Kumar Gupta
- Amity Institute of Nanotechnology, Amity University, Sector-125, Noida 201303, UP, India
| | - Akhshay Singh Bhadwal
- Amity Institute of Nanotechnology, Amity University, Sector-125, Noida 201303, UP, India
| | - Priti Singh
- Department of Physics, Manav Rachna College of Engineering, Faridabad 121004, Haryana, India
| | - Archana Shrivastav
- Department of Microbiology, College of Life Sciences, Gwalior 474 009, MP, India
| | - B R Shrivastav
- Department of Surgery, G. R. Medical College, Palace Road, Gwalior 474009, MP, India
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30
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Yoshii K, Oshino Y, Tachikawa N, Toshima K, Katayama Y. Electrodeposition of palladium from palladium(II) acetylacetonate in an amide-type ionic liquid. Electrochem commun 2015. [DOI: 10.1016/j.elecom.2015.01.003] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022] Open
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31
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Sugioka D, Kameyama T, Kuwabata S, Torimoto T. Single-step preparation of two-dimensionally organized gold particles via ionic liquid/metal sputter deposition. Phys Chem Chem Phys 2015; 17:13150-9. [DOI: 10.1039/c5cp01602a] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Sputter deposition of Au onto an ionic liquid with a hydroxyl-functionalized cation produces a uniform monoparticle film on the liquid surface. The size of nanoparticles is controlled by the sputtering conditions.
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Affiliation(s)
- Daisuke Sugioka
- Graduate School of Engineering
- Nagoya University
- Furo-cho
- Chikusa-ku
- Japan
| | - Tatsuya Kameyama
- Graduate School of Engineering
- Nagoya University
- Furo-cho
- Chikusa-ku
- Japan
| | | | - Tsukasa Torimoto
- Graduate School of Engineering
- Nagoya University
- Furo-cho
- Chikusa-ku
- Japan
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32
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Silva DO, Luza L, Gual A, Baptista DL, Bernardi F, Zapata MJM, Morais J, Dupont J. Straightforward synthesis of bimetallic Co/Pt nanoparticles in ionic liquid: atomic rearrangement driven by reduction-sulfidation processes and Fischer-Tropsch catalysis. NANOSCALE 2014; 6:9085-9092. [PMID: 24975109 DOI: 10.1039/c4nr02018a] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
Unsupported bimetallic Co/Pt nanoparticles (NPs) of 4.4 ± 1.9 nm can be easily obtained by a simple reaction of [bis(cylopentadienyl)cobalt(ii)] and [tris(dibenzylideneacetone) bisplatinum(0)] complexes in 1-n-butyl-3-methylimidazolium hexafluorophosphate IL at 150 °C under hydrogen (10 bar) for 24 h. These bimetallic NPs display core-shell like structures in which mainly Pt composes the external shell and its concentration decreases in the inner-shells (CoPt3@Pt-like structure). XPS and EXAFS analyses show the restructuration of the metal composition at the NP surface when they are subjected to hydrogen and posterior H2S sulfidation, thus inducing the migration of Co atoms to the external shells of the bimetallic NPs. Furthermore, the isolated bimetallic NPs are active catalysts for the Fischer-Tropsch synthesis, with selectivity for naphtha products.
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Affiliation(s)
- Dagoberto O Silva
- Institute of Chemistry, UFRGS, Av. Bento Gonçalves, 9500, Porto Alegre, 91501-970, RS, Brazil.
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Neumeister A, Jakobi J, Rehbock C, Moysig J, Barcikowski S. Monophasic ligand-free alloy nanoparticle synthesis determinants during pulsed laser ablation of bulk alloy and consolidated microparticles in water. Phys Chem Chem Phys 2014; 16:23671-8. [DOI: 10.1039/c4cp03316g] [Citation(s) in RCA: 90] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Abstract
Laser ablation in liquids yields solid solution alloy nanoparticles, where alloy formation is caused by ablation and not by post-irradiation of colloidal nanoparticles.
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Affiliation(s)
- Anne Neumeister
- Technical Chemistry I
- University of Duisburg-Essen and Center for NanoIntegration Duisburg-Essen CENIDE
- 45141 Essen, Germany
| | - Jurij Jakobi
- Technical Chemistry I
- University of Duisburg-Essen and Center for NanoIntegration Duisburg-Essen CENIDE
- 45141 Essen, Germany
| | - Christoph Rehbock
- Technical Chemistry I
- University of Duisburg-Essen and Center for NanoIntegration Duisburg-Essen CENIDE
- 45141 Essen, Germany
| | - Janine Moysig
- Technical Chemistry I
- University of Duisburg-Essen and Center for NanoIntegration Duisburg-Essen CENIDE
- 45141 Essen, Germany
| | - Stephan Barcikowski
- Technical Chemistry I
- University of Duisburg-Essen and Center for NanoIntegration Duisburg-Essen CENIDE
- 45141 Essen, Germany
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Kuwabata S, Torimoto T. ELECTROCHEMISTRY 2013; 81:635-640. [DOI: 10.5796/electrochemistry.81.635] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] Open
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