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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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Coviello V, Forrer D, Amendola V. Recent Developments in Plasmonic Alloy Nanoparticles: Synthesis, Modelling, Properties and Applications. Chemphyschem 2022; 23:e202200136. [PMID: 35502819 DOI: 10.1002/cphc.202200136] [Citation(s) in RCA: 14] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2022] [Revised: 05/02/2022] [Indexed: 01/07/2023]
Abstract
Despite the traditional plasmonic materials are counted on one hand, there are a lot of possible combinations leading to alloys with other elements of the periodic table, in particular those renowned for magnetic or catalytic properties. It is not a surprise, therefore, that nanoalloys are considered for their ability to open new perspectives in the panorama of plasmonics, representing a leading research sector nowadays. This is demonstrated by a long list of studies describing multiple applications of nanoalloys in photonics, photocatalysis, sensing and magneto-optics, where plasmons are combined with other physical and chemical phenomena. In some remarkable cases, the amplification of the conventional properties and even new effects emerged. However, this field is still in its infancy and several challenges must be overcome, starting with the synthesis (control of composition, crystalline order, size, processability, achievement of metastable phases and disordered compounds) as well as the modelling of the structure and properties (accuracy of results, reliability of structural predictions, description of disordered phases, evolution over time) of nanoalloys. To foster the research on plasmonic nanoalloys, here we provide an overview of the most recent results and developments in the field, organized according to synthetic strategies, modelling approaches, dominant properties and reported applications. Considering the several plasmonic nanoalloys under development as well as the large number of those still awaiting synthesis, modelling, properties assessment and technological exploitation, we expect a great impact on the forthcoming solutions for sustainability, ultrasensitive and accurate detection, information processing and many other fields.
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Affiliation(s)
- Vito Coviello
- Department of Chemical Sciences, Università di Padova, via Marzolo 1, I-35131, Padova, Italy
| | - Daniel Forrer
- Department of Chemical Sciences, Università di Padova, via Marzolo 1, I-35131, Padova, Italy
- CNR - ICMATE, I-35131, Padova, Italy
| | - Vincenzo Amendola
- Department of Chemical Sciences, Università di Padova, via Marzolo 1, I-35131, Padova, Italy
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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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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: 7] [Impact Index Per Article: 2.3] [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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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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Shukla M, Verma A, Kumar S, Pal S, Sinha I. Experimental and DFT calculation study of interaction between silver nanoparticle and 1-butyl-3-methyl imidazolium tetrafluoroborate ionic liquid. Heliyon 2021; 7:e06065. [PMID: 33553746 PMCID: PMC7851348 DOI: 10.1016/j.heliyon.2021.e06065] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2020] [Revised: 10/12/2020] [Accepted: 01/19/2021] [Indexed: 11/19/2022] Open
Abstract
The mechanism of stabilization of silver nanoparticles (Ag NPs) by 1-butyl-3-methylimidazolium tetrafluoroborate ionic liquid (IL) is elucidated from experimental spectroscopic investigations and density functional theory (DFT) calculations. FTIR spectrum of the synthesized IL stabilized silver nanoparticles reveals small red shift in B–F stretching frequency while C–H stretching remains unshifted. There is no shift in NMR peaks of IL before and after the synthesis of IL stabilized Ag NPs. This suggests that Ag NPs are surrounded by anions of ILs. The optimized structure obtained from density functional theory (DFT) calculations also shows the anionic part of the IL surrounding the Ag nanocluster. This is supported by the IR frequency data calculated using DFT. The calculated binding energy and interaction energy obtained between cluster and IL is considerably attractive. Density of State (DOS) calculation shows that the HOMO-LUMO gap of the Ag cluster-IL composite is significantly lesser than that of the IL alone.
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Affiliation(s)
- Madhulata Shukla
- Department of Chemistry, G.B. College, Veer Kunwar Singh University, Ramgarh, Kaimur, Bihar, India
- Corresponding author.
| | - Alkadevi Verma
- Department of Chemistry, Rewa Engineering College, Rewa 486002, Madhya Pradesh, India
| | - Sunil Kumar
- Department of Chemistry, Indian Institute of Technology (Banaras Hindu University), Varanasi 221005, India
| | - Shaili Pal
- Department of Chemistry, Indian Institute of Technology (Banaras Hindu University), Varanasi 221005, India
| | - Indrajit Sinha
- Department of Chemistry, Indian Institute of Technology (Banaras Hindu University), Varanasi 221005, India
- Corresponding author.
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Chauvin A, Sergievskaya A, El Mel AA, Fucikova A, Antunes Corrêa C, Vesely J, Duverger-Nédellec E, Cornil D, Cornil J, Tessier PY, Dopita M, Konstantinidis S. Co-sputtering of gold and copper onto liquids: a route towards the production of porous gold nanoparticles. NANOTECHNOLOGY 2020; 31:455303. [PMID: 32726767 DOI: 10.1088/1361-6528/abaa75] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/20/2023]
Abstract
Effective methods for the synthesis of high-purity nanoparticles (NPs) have been extensively studied for a few decades. Among others, cold plasma-based sputtering metals onto a liquid substrate appears to be a very promising technique for the synthesis of high-purity NPs. The process enables the production of very small NPs without using any toxic reagents and complex chemical synthesis routes, and enables the synthesis of alloy NPs which can be the first step towards the formation of porous NPs. In this paper, the synthesis of gold-copper alloy NPs has been performed by co-sputtering gold and copper targets over pentaerythritol ethoxylate. The resulting solutions contain a mixture of gold, copper oxide, and alloy NPs having a radius of few angstroms. The annealing of these NPs, inside the solution, has been performed in order to increase their size and further induce the dealloying of the Au-Cu NPs. The resulting NPs exhibit either a nanoporous structure or are self-organized in an agglomerate of small NPs.
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Affiliation(s)
- Adrien Chauvin
- Department of Condensed Matter Physics, Faculty of Mathematics and Physics, Charles University, Ke Karlovu 5, 121 16, Praha 2, Czech Republic
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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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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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Cai R, Ellis PR, Yin J, Liu J, Brown CM, Griffin R, Chang G, Yang D, Ren J, Cooke K, Bishop PT, Theis W, Palmer RE. Performance of Preformed Au/Cu Nanoclusters Deposited on MgO Powders in the Catalytic Reduction of 4-Nitrophenol in Solution. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2018; 14:e1703734. [PMID: 29412512 DOI: 10.1002/smll.201703734] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/26/2017] [Revised: 12/26/2017] [Indexed: 05/27/2023]
Abstract
The deposition of preformed nanocluster beams onto suitable supports represents a new paradigm for the precise preparation of heterogeneous catalysts. The performance of the new materials must be validated in model catalytic reactions. It is shown that gold/copper (Au/Cu) nanoalloy clusters (nanoparticles) of variable composition, created by sputtering and gas phase condensation before deposition onto magnesium oxide powders, are highly active for the catalytic reduction of 4-nitrophenol in solution at room temperature. Au/Cu bimetallic clusters offer decreased catalyst cost compared with pure Au and the prospect of beneficial synergistic effects. Energy-dispersive X-ray spectroscopy coupled with aberration-corrected scanning transmission electron microscopy imaging confirms that the Au/Cu bimetallic clusters have an alloy structure with Au and Cu atoms randomly located. Reaction rate analysis shows that catalysts with approximately equal amounts of Au and Cu are much more active than Au-rich or Cu-rich clusters. Thus, the interplay between the Au and Cu atoms at the cluster surface appears to enhance the catalytic activity substantially, consistent with model density functional theory calculations of molecular binding energies. Moreover, the physically deposited clusters with Au/Cu ratio close to 1 show a 25-fold higher activity than an Au/Cu reference sample made by chemical impregnation.
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Affiliation(s)
- Rongsheng Cai
- Nanoscale Physics Research Laboratory, School of Physics and Astronomy, University of Birmingham, Birmingham, B15 2TT, UK
- College of Engineering, Swansea University, Bay Campus, Fabian Way, Swansea, SA1 8EN, UK
| | - Peter R Ellis
- Johnson Matthey, Blount's Court, Sonning Common, Reading, RG4 9NH, UK
| | - Jinlong Yin
- Teer Coatings Ltd., Berry Hill Industrial Estate, Droitwich, Worcestershire, WR9 9AS, UK
| | - Jian Liu
- Nanoscale Physics Research Laboratory, School of Physics and Astronomy, University of Birmingham, Birmingham, B15 2TT, UK
| | | | - Ross Griffin
- Nanoscale Physics Research Laboratory, School of Physics and Astronomy, University of Birmingham, Birmingham, B15 2TT, UK
| | - Guojing Chang
- Collaborative Innovation Center for Marine Biomass Fibers Materials and Textiles of Shandong Province, School of Environmental Science and Engineering, Qingdao University, Qingdao, 266071, P. R. China
| | - Dongjiang Yang
- Collaborative Innovation Center for Marine Biomass Fibers Materials and Textiles of Shandong Province, School of Environmental Science and Engineering, Qingdao University, Qingdao, 266071, P. R. China
| | - Jun Ren
- School of Chemical and Environmental Engineering, North University of China, Taiyuan, 030051, P. R. China
| | - Kevin Cooke
- Teer Coatings Ltd., Berry Hill Industrial Estate, Droitwich, Worcestershire, WR9 9AS, UK
| | - Peter T Bishop
- Johnson Matthey, Blount's Court, Sonning Common, Reading, RG4 9NH, UK
| | - Wolfgang Theis
- Nanoscale Physics Research Laboratory, School of Physics and Astronomy, University of Birmingham, Birmingham, B15 2TT, UK
| | - Richard E Palmer
- College of Engineering, Swansea University, Bay Campus, Fabian Way, Swansea, SA1 8EN, UK
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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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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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Suzuki S, Hattori Y, Kuwabata S, Torimoto T. Improvement of photoluminescence stability of ZnS-AgInS2 nanoparticles through interactions with ionic liquids. J Photochem Photobiol A Chem 2017. [DOI: 10.1016/j.jphotochem.2016.08.034] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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16
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Hatakeyama Y, Kimura S, Kameyama T, Agawa Y, Tanaka H, Judai K, Torimoto T, Nishikawa K. Temperature-independent formation of Au nanoparticles in ionic liquids by arc plasma deposition. Chem Phys Lett 2016. [DOI: 10.1016/j.cplett.2016.06.044] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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17
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Hatakeyama Y, Judai K, Onishi K, Takahashi S, Kimura S, Nishikawa K. Anion and cation effects on the size control of Au nanoparticles prepared by sputter deposition in imidazolium-based ionic liquids. Phys Chem Chem Phys 2016; 18:2339-49. [PMID: 26344691 DOI: 10.1039/c5cp04123f] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
The sputter deposition of metals in an ionic liquid (IL) capture medium is a simple and elegant method for preparing nanoparticles without any chemical reaction. Although there have been some reports on the size determination factors for Au nanoparticles (AuNPs) prepared using this method, the effects with respect to the type of IL used have not been clearly elucidated. This is because there are some complicating factors, some of which have been revealed by our previous systematic studies. In the present study, we prepare AuNPs in nine types of imidazolium-based IL to examine the size determination effects of the type of anion involved, the length of the alkyl chain of the cation, and the preparation temperature for each IL, while keeping other factors constant. For most of the capture media ILs, the sizes of the AuNPs increase with an increase in temperature. The AuNPs prepared in ILs containing different types of anions exhibit distinctly different particle sizes and temperature dependences. Conversely, the alkyl chain is regarded as a secondary stabilizer that works only at higher preparation temperatures. We conclude that the sizes of AuNPs prepared by this method may be determined by the competition between the collision frequency of the ejected Au atoms and the stabilizing capability of the anions that form the first coordination shell around the AuNPs. The AuNP sizes are closely related to the volume of anions.
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Affiliation(s)
- Yoshikiyo Hatakeyama
- College of Humanities and Sciences, Nihon University, Sakurajosui, Setagaya-ku, Tokyo 156-8550, Japan
| | - Ken Judai
- College of Humanities and Sciences, Nihon University, Sakurajosui, Setagaya-ku, Tokyo 156-8550, Japan
| | - Kei Onishi
- Graduate School of Advanced Integration Science, Chiba University, Yayoi-cho, Inage-ku, Chiba 263-8522, Japan.
| | - Satoshi Takahashi
- Graduate School of Advanced Integration Science, Chiba University, Yayoi-cho, Inage-ku, Chiba 263-8522, Japan.
| | - Satoshi Kimura
- Graduate School of Advanced Integration Science, Chiba University, Yayoi-cho, Inage-ku, Chiba 263-8522, Japan.
| | - Keiko Nishikawa
- Graduate School of Advanced Integration Science, Chiba University, Yayoi-cho, Inage-ku, Chiba 263-8522, Japan.
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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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