1
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Bukhari QUA, Della Pelle F, Alvarez-Diduk R, Scroccarello A, Nogués C, Careta O, Compagnone D, Merkoci A. Laser-assembled conductive 3D nanozyme film-based nitrocellulose sensor for real-time detection of H 2O 2 released from cancer cells. Biosens Bioelectron 2024; 262:116544. [PMID: 38963952 DOI: 10.1016/j.bios.2024.116544] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2024] [Revised: 06/25/2024] [Accepted: 06/27/2024] [Indexed: 07/06/2024]
Abstract
In this work, a nanostructured conductive film possessing nanozyme features was straightforwardly produced via laser-assembling and integrated into complete nitrocellulose sensors; the cellulosic substrate allows to host live cells, while the nanostructured film nanozyme activity ensures the enzyme-free real-time detection of hydrogen peroxide (H2O2) released by the sames. In detail, a highly exfoliated reduced graphene oxide 3D film decorated with naked platinum nanocubes was produced using a CO2-laser plotter via the simultaneous reduction and patterning of graphene oxide and platinum cations; the nanostructured film was integrated into a nitrocellulose substrate and the complete sensor was manufactured using an affordable semi-automatic printing approach. The linear range for the direct H2O2 determination was 0.5-80 μM (R2 = 0.9943), with a limit of detection of 0.2 μM. Live cell measurements were achieved by placing the sensor in the culture medium, ensuring their adhesion on the sensors' surface; two cell lines were used as non-tumorigenic (Vero cells) and tumorigenic (SKBR3 cells) models, respectively. Real-time detection of H2O2 released by cells upon stimulation with phorbol ester was carried out; the nitrocellulose sensor returned on-site and real-time quantitative information on the H2O2 released proving useful sensitivity and selectivity, allowing to distinguish tumorigenic cells. The proposed strategy allows low-cost in-series semi-automatic production of paper-based point-of-care devices using simple benchtop instrumentation, paving the way for the easy and affordable monitoring of the cytopathology state of cancer cells.
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Affiliation(s)
- Qurat U A Bukhari
- Nanobioelectronics & Biosensors Group, Catalan Institute of Nanoscience and Nanotechnology (ICN2), CSIC and BIST, Campus UAB, Bellaterra, Barcelona, Spain; Department of Bioscience and Technology for Food, Agriculture and Environment, University of Teramo, Campus "Aurelio Saliceti" Via R. Balzarini 1, 64100, Teramo, Italy
| | - Flavio Della Pelle
- Department of Bioscience and Technology for Food, Agriculture and Environment, University of Teramo, Campus "Aurelio Saliceti" Via R. Balzarini 1, 64100, Teramo, Italy
| | - Ruslan Alvarez-Diduk
- Nanobioelectronics & Biosensors Group, Catalan Institute of Nanoscience and Nanotechnology (ICN2), CSIC and BIST, Campus UAB, Bellaterra, Barcelona, Spain.
| | - Annalisa Scroccarello
- Department of Bioscience and Technology for Food, Agriculture and Environment, University of Teramo, Campus "Aurelio Saliceti" Via R. Balzarini 1, 64100, Teramo, Italy
| | - Carme Nogués
- Departament de Biologia Cellular, Fisiologia i Immunologia, Facultat de Biociencies, Universitat Autonoma de Barcelona (UAB), 08193 Bellaterra, Barcelona, Spain
| | - Oriol Careta
- Departament de Biologia Cellular, Fisiologia i Immunologia, Facultat de Biociencies, Universitat Autonoma de Barcelona (UAB), 08193 Bellaterra, Barcelona, Spain
| | - Dario Compagnone
- Department of Bioscience and Technology for Food, Agriculture and Environment, University of Teramo, Campus "Aurelio Saliceti" Via R. Balzarini 1, 64100, Teramo, Italy.
| | - Arben Merkoci
- Nanobioelectronics & Biosensors Group, Catalan Institute of Nanoscience and Nanotechnology (ICN2), CSIC and BIST, Campus UAB, Bellaterra, Barcelona, Spain; ICREA Institució Catalana de Recerca i Estudis Avançats, Passeig de Lluís Companys, 23, 08010, Barcelona, Spain.
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2
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Morita T, Ogawa S, Kayama T, Ono W, Tamura S, Umeda K, Iwamatsu T, Uehara N, Konishi T. Element-ratio dependence of the 5d-states of Au and Pt in solid-solution-type Au-Pt alloy nanoparticles studied by X-ray absorption spectroscopy and density functional theory. Phys Chem Chem Phys 2023; 25:27417-27426. [PMID: 37794828 DOI: 10.1039/d3cp02900j] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/06/2023]
Abstract
Solid-solution-type Au-Pt alloy nanoparticles (NPs) were prepared from the nanoclusters of each metal using the polymer-conjugated fusion growth method. The elemental mapping analysis showed that the mixing state of the elements in the NPs drastically changed in the narrow reaction-temperature range from 100 °C to 180 °C. For their various mixing states, the 5d-states of Au and Pt atoms in the alloy NPs were investigated on the basis of the white line intensities of X-ray absorption near edge structure (XANES). Then, the 5d-states of Au and Pt atoms in a model crystalline ordered alloy structures were investigated on the basis of the theoretically calculated XANES spectra using density functional theory (DFT) in the whole composition range. The DFT calculation showed that the changes in the absorption spectra near the Pt and Au edges are caused by the change in the occupation of the Pt 5d-states and the orbital hybridisation of the Au 5d-states with the 5d-states of neighbouring Pt atoms around an Au atom, respectively.
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Affiliation(s)
- Takeshi Morita
- Department of Chemistry, Graduate School of Science, Chiba University, Chiba 263-8522, Japan.
| | - Shunki Ogawa
- Department of Chemistry, Graduate School of Science, Chiba University, Chiba 263-8522, Japan.
| | - Tomotaka Kayama
- Department of Chemistry, Graduate School of Science, Chiba University, Chiba 263-8522, Japan.
| | - Wataru Ono
- Department of Chemistry, Graduate School of Science, Chiba University, Chiba 263-8522, Japan.
| | - Shinya Tamura
- Department of Chemistry, Graduate School of Science, Chiba University, Chiba 263-8522, Japan.
| | - Kazuki Umeda
- Department of Chemistry, Graduate School of Science, Chiba University, Chiba 263-8522, Japan.
| | - Tsubasa Iwamatsu
- Graduate School of Engineering, Utsunomiya University, Utsunomiya, Tochigi 321-8585, Japan.
| | - Nobuo Uehara
- Graduate School of Engineering, Utsunomiya University, Utsunomiya, Tochigi 321-8585, Japan.
| | - Takehisa Konishi
- Department of Chemistry, Graduate School of Science, Chiba University, Chiba 263-8522, Japan.
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3
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Es-Souni M. Exploiting Interfacial Effects between Collapsing Bubbles and Nanocarbon/TiN Substrates for the Green Synthesis of Self-Organized Noble Metal and Nanoalloy Nanoparticles. MICROMACHINES 2023; 14:1141. [PMID: 37374726 DOI: 10.3390/mi14061141] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/19/2023] [Revised: 05/25/2023] [Accepted: 05/27/2023] [Indexed: 06/29/2023]
Abstract
Noble metal nanoparticles and multi-materials thereof are processed on a substrate from aqueous solutions of the metallic ions, precluding any chemical additives/catalysts. The methods reported here take advantage of interactions between collapsing bubbles and the substrate that result in the generation of reducing radicals at the substrate surface and leading to the reduction of the metal ions on those sites, followed by nucleation and growth. Two selected substrates where these phenomena take place are nanocarbon and TiN. By either using ultrasonic radiation of the substrate in ionic solution or quenching the substrate in a solution from temperatures above the Leidenfrost temperature, a high density of nanoparticles of Au, Au/Pt, Au/Pd and Au/Pd/Pt are synthesized on the substrate surface. The sites where the reducing radicals are generated determine the self-assembly of the nanoparticles. The methods yield highly adherent surface films and nanoparticles; they are materials efficient and cost effective because only the surface is modified with costly materials. The formation mechanisms of these green multi-material NPs are described. Outstanding electrocatalytic performances in acidic solutions of methanol and formic acid are demonstrated.
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Affiliation(s)
- Mohammed Es-Souni
- Institute for Materials & Surface Technology (IMST), 24149 Kiel, Germany
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4
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Zhang M, Zhang X, Lv M, Yue X, Zheng Z, Xia H. Ethanol Oxidation via 12-Electron Pathway on Spiky Au@AuPd Nanoparticles Assisted by Near-Infrared Light. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2023; 19:e2205781. [PMID: 36775916 DOI: 10.1002/smll.202205781] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/19/2022] [Revised: 11/13/2022] [Indexed: 05/04/2023]
Abstract
In this work, ethanol oxidation reaction (EOR) via 12-electron (C1-12e) pathway on spiky Au@AuPd nanoparticles (NPs) with ultrathin AuPd alloy shells is achieved in alkaline media with the assistance of the near-infrared (NIR) light. It is found that OH radicals can be produced from the OHads species adsorbed on the surfaces of Pd atoms led by surface plasmon resonance (SPR) effect of spiky Au@AuPd NPs under the irradiation of NIR light. Moreover, OH radicals play the key role for the achievement of EOR proceeded by the desirable C1-12e pathway because OH radicals can directly break the C-C bonds of ethanol. Accordingly, the electrocatalytic performance of spiky Au@AuPd NPs toward EOR under NIR light is greatly improved. For instance, their mass activity can be up to 33.2 A mgpd -1 in the 0.5 m KOH solution containing 0.5 m ethanol, which is about 158 times higher than that of commercial Pd/C catalysts (0.21 A mgpd -1 ) and is better than those of the state-of-the-art Pd-based catalysts reported in literature thus far, to the best of our knowledge. Moreover, their highest mass activity can be further improved to 118.3 A mgpd -1 in the 1.5 m KOH solution containing 1.25 m ethanol.
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Affiliation(s)
- Mengmeng Zhang
- State Key Laboratory of Crystal Materials, Shandong University, Jinan, 250100, P. R. China
| | - Xiang Zhang
- State Key Laboratory of Crystal Materials, Shandong University, Jinan, 250100, P. R. China
| | - Min Lv
- State Key Laboratory of Crystal Materials, Shandong University, Jinan, 250100, P. R. China
| | - Xinru Yue
- State Key Laboratory of Crystal Materials, Shandong University, Jinan, 250100, P. R. China
| | - Zhaoke Zheng
- State Key Laboratory of Crystal Materials, Shandong University, Jinan, 250100, P. R. China
| | - Haibing Xia
- State Key Laboratory of Crystal Materials, Shandong University, Jinan, 250100, P. R. China
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5
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Tojo C, Buceta D, López-Quintela MA. Insight into the surface composition of bimetallic nanocatalysts obtained from microemulsions. J Colloid Interface Sci 2021; 602:367-375. [PMID: 34139534 DOI: 10.1016/j.jcis.2021.06.040] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2021] [Revised: 06/02/2021] [Accepted: 06/07/2021] [Indexed: 10/21/2022]
Abstract
The enhancement of catalysts efficiency of bimetallic nanoparticles depends on the ability to exert control over surface composition. However, results relating surface composition and feeding solution of bimetallic nanoparticles synthesized in microemulsions are controversial and apparently contradictory. In order to comprehend how the resulting surface can be modified under different synthesis conditions and for different pairs of metals, a computer simulation study was carried out. The resulting surface compositions are explained based on the relative rates of deposition of the two metals, which depend on the particular metal pair, the concentration of reactants and the microemulsion composition. This study provides a satisfactory understanding of experimental results and allows us to identify the main factors affecting the nanoparticle's surface composition. Consequently, concrete and practical guidelines can be established to facilitate the experimental synthesis of bimetallic nanoparticles with tailored surfaces.
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Affiliation(s)
- C Tojo
- Departmento de Química Física, Universidade de Vigo, E-36310 Vigo, Spain.
| | - D Buceta
- Laboratorio de Magnetismo y Nanotecnología, University of Santiago de Compostela, E-15782 Santiago de Compostela, Spain.
| | - M A López-Quintela
- Laboratorio de Magnetismo y Nanotecnología, University of Santiago de Compostela, E-15782 Santiago de Compostela, Spain.
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6
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Es-Souni M. Supported Binary and Ternary Nanoalloy Nanoparticle Catalysts-A Green Processing Approach using the Leidenfrost layer as Nanoreactor. NANO EXPRESS 2021. [DOI: 10.1088/2632-959x/abfd8d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
Abstract
When a nanocarbon substrate is heated between 300 °C and 320 °C that is slightly above the Leidenfrost temperature and subsequently quenched in an aqueous solution containing a mixture of noble metal ions, a high density of nanoalloy nanoparticles (NPs) form on the surface. Large surface areas can be decorated in this way by nanoalloy NPs of the system (Au, Pt, Pd). Both binary AuPt, AuPd and PtPd as well as ternary nanoalloys are obtained. The chemical composition of the nanoalloys can be tuned by varying the ion mixture ratio of the solutions. The simultaneous reduction of the noble metal ions on the surface occurs without the need of any reducing agent, presumably owing to charge transfer from ionized species during the quenching process. The method yields nanocarbon-supported, highly adherent nanoalloy NPs, is materials efficient and cost effective because only the surface is modified with the costly noble metals. The supported nanoalloy NPs are exemplary applied to the electrooxidation of methanol and formic acid in acidic solutions, and show an overall high performance.
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7
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Defective PdRh bimetallic nanocrystals enable enhanced methanol electrooxidation. Colloids Surf A Physicochem Eng Asp 2021. [DOI: 10.1016/j.colsurfa.2021.126323] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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8
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Vinoth V, Pugazhenthiran N, Viswanathan Mangalaraja R, Syed A, Marraiki N, Valdés H, Anandan S. Development of an electrochemical enzyme-free glucose sensor based on self-assembled Pt-Pd bimetallic nanosuperlattices. Analyst 2021; 145:7898-7906. [PMID: 33016273 DOI: 10.1039/d0an01526a] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
The huge demand for the clinical diagnosis of diabetes mellitus has prompted the development of great-performance sensing platforms for glucose detection. Non-enzymatic glucose sensors are getting closer to their use in realistic applications. In this work, polyvinylpyrrolidone (PVP)-conjugated bimetallic Pt-Pd nanosuperlattices were synthesized precisely through a simple synthesis procedure, leading to controllable spherical morphologies with significantly fine and precise nanostructures in a size range of ∼3-5 nm by the reduction of Pt and Pd precursors in ethylene glycol, using an ultrasonic method. High-resolution transmission electron microscopy (HRTEM) measurements evidenced the formation of Pt-Pd bimetallic nanosuperlattices (BMNSLs). The superlattice-fringe patterns (111) of bimetallic Pt-Pd NSLs were identified in the HRTEM images, clearly showing their crystalline nature. The prepared material was used in the electrochemical oxidation of glucose using voltammetry analyses. The experimental evidence indicates that the Pt-Pd BMNSL modified glassy carbon electrode is effective for the selective amperometric detection of glucose in the presence of galactose, sucrose, fructose, lactose, and ascorbic acid. Moreover, its application in the detection of glucose in real serum and urine samples was assessed and good recoveries are achieved. The results show that a Pt-Pd bimetallic nanosuperlattice with high surface area, catalytic activity, and superior selectivity could be a promising material in the generation of novel electrodes for low-cost non-enzymatic glucose sensors.
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Affiliation(s)
- Victor Vinoth
- Clean Technologies laboratory, Facultad de Ingeniería, Universidad Católica de la Santísima Concepción, Concepción, Chile.
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9
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Lee E, Park C, Lee DW, Lee G, Park HY, Jang JH, Kim HJ, Sung YE, Tak Y, Yoo SJ. Tunable Synthesis of N,C-Codoped Ti 3+-Enriched Titanium Oxide Support for Highly Durable PEMFC Cathode. ACS Catal 2020. [DOI: 10.1021/acscatal.0c02570] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Eungjun Lee
- Center for Hydrogen·Fuel Cell Research, Korea Institute of Science and Technology, Seoul 02792, Republic of Korea
- School of Chemical and Biological Engineering, Seoul National University, Seoul 08826, Republic of Korea
| | - Changmin Park
- Department of Chemical Engineering, Inha University, Incheon 22212, Republic of Korea
| | - Dong Wook Lee
- Center for Hydrogen·Fuel Cell Research, Korea Institute of Science and Technology, Seoul 02792, Republic of Korea
- Department of Chemical and Biological Engineering. Korea University, Seoul 02841, Republic of Korea
| | - Gibaek Lee
- School of Chemical Engineering, Yeungnam University, 38541 Gyeongsan, Republic of Korea
| | - Hee-Young Park
- Center for Hydrogen·Fuel Cell Research, Korea Institute of Science and Technology, Seoul 02792, Republic of Korea
| | - Jong Hyun Jang
- Center for Hydrogen·Fuel Cell Research, Korea Institute of Science and Technology, Seoul 02792, Republic of Korea
- Division of Energy & Environment Technology, KIST School, University of Science and Technology (UST), Daejeon 34113, Republic of Korea
| | - Hyoung-Juhn Kim
- Center for Hydrogen·Fuel Cell Research, Korea Institute of Science and Technology, Seoul 02792, Republic of Korea
| | - Yung-Eun Sung
- School of Chemical and Biological Engineering, Seoul National University, Seoul 08826, Republic of Korea
| | - Yongsug Tak
- Department of Chemical Engineering, Inha University, Incheon 22212, Republic of Korea
| | - Sung Jong Yoo
- Center for Hydrogen·Fuel Cell Research, Korea Institute of Science and Technology, Seoul 02792, Republic of Korea
- Division of Energy & Environment Technology, KIST School, University of Science and Technology (UST), Daejeon 34113, Republic of Korea
- KHU-KIST, Department of Converging Science and Technology, Kyung Hee University, Seoul 02447, Republic of Korea
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10
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Pérez-Álvarez J, Tojo C, Buceta D, López-Quintela MA. Tailored surface composition of Au/Pt nanocatalysts synthesized in microemulsions: a simulation study. RSC Adv 2020; 10:42277-42286. [PMID: 35516746 PMCID: PMC9057839 DOI: 10.1039/d0ra08227a] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2020] [Accepted: 11/13/2020] [Indexed: 11/21/2022] Open
Abstract
Au/Pt nanoparticles show an optimized catalytic activity when compared with Pt nanoparticles because Pt activity is improved by the presence of Au on the surface. It was checked whether a controllable surface composition can be achieved by the simple strategy of varying the Au : Pt ratio. We present an in-depth kinetic simulation study on the influence of Au : Pt ratio on the formation of Au/Pt nanoparticles synthesized in microemulsions. This study is able to explain the resulting nanoarrangement as a function of kinetic parameters such as Au : Pt ratio and intermicellar exchange rate. The role of the micelles as a dosing pump of the Au precursor explains that a higher Au amount results in a Au reduction which takes place over a longer period of time. It implies that Au is deposited until longer stages of the synthesis, so Au is present at the nanoparticle surface. Micelles as reaction media produce a minor impact on Pt due to its slower reduction. These different kinetic behaviours of Au and Pt give rise to a surface composition which can be tailored by tuning the Au : Pt ratio. Numerical results on surface composition successfully reproduce experimental data and further support the outcomes of the degree of atomic mixing under different Au : Pt ratios. Pure Pt surface at low Au content and mixed surface at high Au content.![]()
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Affiliation(s)
| | - Concha Tojo
- Physical Chemistry Department
- University of Vigo
- Vigo
- Spain
| | - David Buceta
- Laboratorio de Magnetismo y Nanotecnología
- University of Santiago de Compostela
- Santiago de Compostela
- Spain
| | - M. Arturo López-Quintela
- Laboratorio de Magnetismo y Nanotecnología
- University of Santiago de Compostela
- Santiago de Compostela
- Spain
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11
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Holade Y, Tuleushova N, Tingry S, Servat K, Napporn TW, Guesmi H, Cornu D, Kokoh KB. Recent advances in the electrooxidation of biomass-based organic molecules for energy, chemicals and hydrogen production. Catal Sci Technol 2020. [DOI: 10.1039/c9cy02446h] [Citation(s) in RCA: 31] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
The recent developments in biomass-derivative fuelled electrochemical converters for electricity or hydrogen production together with chemical electrosynthesis have been reviewed.
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Affiliation(s)
- Yaovi Holade
- Institut Européen des Membranes
- IEM – UMR 5635
- Univ. Montpellier
- ENSCM
- CNRS
| | - Nazym Tuleushova
- Institut Européen des Membranes
- IEM – UMR 5635
- Univ. Montpellier
- ENSCM
- CNRS
| | - Sophie Tingry
- Institut Européen des Membranes
- IEM – UMR 5635
- Univ. Montpellier
- ENSCM
- CNRS
| | - Karine Servat
- Université de Poitiers
- IC2MP UMR-CNRS 7285
- 86073 Poitiers Cedex 9
- France
| | - Teko W. Napporn
- Université de Poitiers
- IC2MP UMR-CNRS 7285
- 86073 Poitiers Cedex 9
- France
| | - Hazar Guesmi
- Institut Charles Gerhardt Montpellier
- ICGM – UMR 5253
- Univ. Montpellier
- ENSCM
- CNRS
| | - David Cornu
- Institut Européen des Membranes
- IEM – UMR 5635
- Univ. Montpellier
- ENSCM
- CNRS
| | - K. Boniface Kokoh
- Université de Poitiers
- IC2MP UMR-CNRS 7285
- 86073 Poitiers Cedex 9
- France
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12
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Tojo C, Buceta D, López-Quintela MA. On the minimum reactant concentration required to prepare Au/M core-shell nanoparticles by the one-pot microemulsion route. PHYSICAL SCIENCES REVIEWS 2019. [DOI: 10.1515/psr-2018-0045] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
AbstractThe minimum reactant concentration required to synthesize Au/M (M = Ag, Pt, Pd, Ru …) core-shell nanoparticles by the one-pot microemulsion route was calculated by a simulation model under different synthesis conditions. This minimum concentration was proved to depend on the reduction potential of the slower metal M and on the rigidity of the surfactant film composing the microemulsion. Model results were tested by comparing with Au/M nanoparticles taken from literature. In all cases, experimental data obey model predictions. From this agreement, one can conclude that the smaller the standard potential of the slower reduction metal, the lower the minimum concentration needed to obtain core-shell nanoparticles. In addition, the higher the surfactant flexibility, the higher the minimum concentration to synthesize metal segregated nanoparticles. Model prediction allows to quantify which is the best value of concentration to prepare different pairs of core-shell Au/M nanoparticles in terms of nature of M metal in the couple and microemulsion composition. This outlook may become an advanced tool for fine-tuning Au/M nanostructures.Graphical Abstract:
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Affiliation(s)
- C. Tojo
- Faculty of Chemistry, Department of Physical Chemistry, University of Vigo, Vigo, Galicia E-36310, Spain
| | - D. Buceta
- Facultade de Quimica, Laboratorio de Magnetismo y Nanotecnología, University of Santiago de Compostela, Santiago de Compostela,GaliciaE-15782, Spain
| | - M. A. López-Quintela
- Facultade de Quimica, Laboratorio de Magnetismo y Nanotecnología, University of Santiago de Compostela, Santiago de Compostela,GaliciaE-15782, Spain
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13
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Torigoe K, Takahashi M, Tsuchiya K, Iwabata K, Ichihashi T, Sakaguchi K, Sugawara F, Abe M. High-Power Abiotic Direct Glucose Fuel Cell Using a Gold-Platinum Bimetallic Anode Catalyst. ACS OMEGA 2018; 3:18323-18333. [PMID: 31458409 PMCID: PMC6643607 DOI: 10.1021/acsomega.8b02739] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/10/2018] [Accepted: 12/13/2018] [Indexed: 05/22/2023]
Abstract
We developed a high-power abiotic direct glucose fuel cell system using a Au-Pt bimetallic anode catalyst. The high power generation (95.7 mW cm-2) was attained by optimizing operating conditions such as the composition of a bimetallic anode catalyst, loading amount of the metal catalyst on a carbon support, ionomer/carbon weight ratio when the catalyst was applied to the anode, glucose and KOH concentrations in the fuel solution, and operating temperature and flow rate of the fuel solution. It was found that poly(N-vinyl-2-pyrrolidone)-stabilized Au80Pt20 nanoparticles (mean diameter 1.5 nm) on a carbon (Ketjen Black 600) support function as a highly active anode catalyst for the glucose electrooxidation. The ionomer/carbon weight ratio also greatly affects the cell properties, which was found to be optimal at 0.2. As for the glucose concentration, a maximum cell power was derived at 0.4-0.6 mol dm-3. A high KOH concentration (4.0 mol dm-3) was preferable for deriving the maximum power. The cell power increased with the increasing flow rate of the glucose solution up to 50 cm3 min-1 and leveled off thereafter. At the optimal condition, the maximum power density and corresponding cell voltage of 58.2 mW cm-2 (0.36 V) and 95.7 mW cm-2 (0.34 V) were recorded at 298 and 328 K, respectively.
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Affiliation(s)
- Kanjiro Torigoe
- Acteiive
Co. Ltd., 2641 Yamazaki, Noda 278-8510, Japan
- Department of Pure and Applied
Chemistry, Research Institute for Science and
Technology, Research Equipment Center, and Department of Applied Biological Science, Tokyo University of Science, 2641 Yamazaki, Noda 278-8510, Japan
- E-mail: (Kanjiro Torigoe)
| | | | - Koji Tsuchiya
- Acteiive
Co. Ltd., 2641 Yamazaki, Noda 278-8510, Japan
- Department of Pure and Applied
Chemistry, Research Institute for Science and
Technology, Research Equipment Center, and Department of Applied Biological Science, Tokyo University of Science, 2641 Yamazaki, Noda 278-8510, Japan
| | - Kazuki Iwabata
- Acteiive
Co. Ltd., 2641 Yamazaki, Noda 278-8510, Japan
- Department of Pure and Applied
Chemistry, Research Institute for Science and
Technology, Research Equipment Center, and Department of Applied Biological Science, Tokyo University of Science, 2641 Yamazaki, Noda 278-8510, Japan
| | - Toshinari Ichihashi
- Department of Pure and Applied
Chemistry, Research Institute for Science and
Technology, Research Equipment Center, and Department of Applied Biological Science, Tokyo University of Science, 2641 Yamazaki, Noda 278-8510, Japan
| | - Kengo Sakaguchi
- Acteiive
Co. Ltd., 2641 Yamazaki, Noda 278-8510, Japan
- Department of Pure and Applied
Chemistry, Research Institute for Science and
Technology, Research Equipment Center, and Department of Applied Biological Science, Tokyo University of Science, 2641 Yamazaki, Noda 278-8510, Japan
| | - Fumio Sugawara
- Acteiive
Co. Ltd., 2641 Yamazaki, Noda 278-8510, Japan
- Department of Pure and Applied
Chemistry, Research Institute for Science and
Technology, Research Equipment Center, and Department of Applied Biological Science, Tokyo University of Science, 2641 Yamazaki, Noda 278-8510, Japan
| | - Masahiko Abe
- Acteiive
Co. Ltd., 2641 Yamazaki, Noda 278-8510, Japan
- Department of Pure and Applied
Chemistry, Research Institute for Science and
Technology, Research Equipment Center, and Department of Applied Biological Science, Tokyo University of Science, 2641 Yamazaki, Noda 278-8510, Japan
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14
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Duchesne PN, Li ZY, Deming CP, Fung V, Zhao X, Yuan J, Regier T, Aldalbahi A, Almarhoon Z, Chen S, Jiang DE, Zheng N, Zhang P. Golden single-atomic-site platinum electrocatalysts. NATURE MATERIALS 2018; 17:1033-1039. [PMID: 30250176 DOI: 10.1038/s41563-018-0167-5] [Citation(s) in RCA: 161] [Impact Index Per Article: 26.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/12/2018] [Accepted: 08/13/2018] [Indexed: 05/24/2023]
Abstract
Bimetallic nanoparticles with tailored structures constitute a desirable model system for catalysts, as crucial factors such as geometric and electronic effects can be readily controlled by tailoring the structure and alloy bonding of the catalytic site. Here we report a facile colloidal method to prepare a series of platinum-gold (PtAu) nanoparticles with tailored surface structures and particle diameters on the order of 7 nm. Samples with low Pt content, particularly Pt4Au96, exhibited unprecedented electrocatalytic activity for the oxidation of formic acid. A high forward current density of 3.77 A mgPt-1 was observed for Pt4Au96, a value two orders of magnitude greater than those observed for core-shell structured Pt78Au22 and a commercial Pt nanocatalyst. Extensive structural characterization and theoretical density functional theory simulations of the best-performing catalysts revealed densely packed single-atom Pt surface sites surrounded by Au atoms, which suggests that their superior catalytic activity and selectivity could be attributed to the unique structural and alloy-bonding properties of these single-atomic-site catalysts.
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Affiliation(s)
- Paul N Duchesne
- Department of Chemistry, Dalhousie University, Halifax, NS, Canada
| | - Z Y Li
- Nanoscale Physics Research Laboratory, School of Physics & Astronomy, University of Birmingham, Birmingham, UK
| | - Christopher P Deming
- Department of Chemistry and Biochemistry, University of California, Santa Cruz, CA, USA
| | - Victor Fung
- Department of Chemistry, University of California, Riverside, CA, USA
| | - Xiaojing Zhao
- State Key Laboratory for Physical Chemistry of Solid Surfaces, Collaborative Innovation Center of Chemistry for Energy Materials, and National & Local Joint Engineering Research Center for Preparation Technology of Nanomaterial, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, China
| | - Jun Yuan
- Department of Physics, University of York, York, UK
| | - Tom Regier
- Canadian Light Source, Saskatoon, SK, Canada
| | - Ali Aldalbahi
- Department of Chemistry, College of Science, King Saud University , Riyadh, Saudi Arabia
| | - Zainab Almarhoon
- Department of Chemistry, College of Science, King Saud University , Riyadh, Saudi Arabia
| | - Shaowei Chen
- Department of Chemistry and Biochemistry, University of California, Santa Cruz, CA, USA
| | - De-En Jiang
- Department of Chemistry, University of California, Riverside, CA, USA
| | - Nanfeng Zheng
- State Key Laboratory for Physical Chemistry of Solid Surfaces, Collaborative Innovation Center of Chemistry for Energy Materials, and National & Local Joint Engineering Research Center for Preparation Technology of Nanomaterial, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, China
| | - Peng Zhang
- Department of Chemistry, Dalhousie University, Halifax, NS, Canada.
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15
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Chang Z, Yang Y, He J, Rusling JF. Gold nanocatalysts supported on carbon for electrocatalytic oxidation of organic molecules including guanines in DNA. Dalton Trans 2018; 47:14139-14152. [PMID: 30066010 PMCID: PMC6191342 DOI: 10.1039/c8dt01966e] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Abstract
Gold (Au) is chemically stable and resistant to oxidation. Although bulk Au is catalytically inert, nanostructured Au exhibits unique size-dependent catalytic activity. When Au nanocatalysts are supported on conductive carbon (denoted as Au@C), Au@C becomes promising for a wide range of electrochemical reactions such as electrooxidation of alcohols and electroreduction of carbon dioxide. In this mini-review, we summarize Au@C nanocatalysts with specific attention on the most recent achievements including the findings in our own laboratories, and show that Au nanoclusters (AuNCs, <2 nm) on nitrided carbon are excellent electrocatalysts for the oxidation of organic molecules including guanines in DNA. The state-of-the-art synthesis and characterization of these nanomaterials are also documented. Synergistic interactions among Au-containing multicomponents on carbon supports and their applications in electrocatalysis are discussed as well. Finally, challenges and future outlook for these emerging and promising nanomaterials are envisaged.
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Affiliation(s)
- Zheng Chang
- Department of Applied Chemistry of College of Science, Xi’an University of Technology, Xi’an 710054, China
- Department of Chemistry, University of Connecticut, Storrs, CT 06269, USA
| | - Yue Yang
- Department of Chemical Engineering, Nanjing University of Science and Technology, Jiangsu 210094, China
- Department of Chemistry, University of Connecticut, Storrs, CT 06269, USA
| | - Jie He
- Department of Chemistry, University of Connecticut, Storrs, CT 06269, USA
- Institute of Materials Science, University of Connecticut, Storrs, CT 06269, USA
| | - James F. Rusling
- Department of Chemistry, University of Connecticut, Storrs, CT 06269, USA
- Institute of Materials Science, University of Connecticut, Storrs, CT 06269, USA
- Department of Surgery and Neag Cancer Center, UConn Health, Farmington, CT 06032, USA
- School of Chemistry, National University of Ireland at Galway, Galway H91 TK33, Ireland
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16
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Akbarzadeh H, Mehrjouei E, Moradi A, Shamkhali AN. Rattle, Porous, and Dense Cores and Discontinuous Porous, Continuous Porous, and Dense Shells in Pt@Au Core–Shell Nanoparticles. Ind Eng Chem Res 2018. [DOI: 10.1021/acs.iecr.8b00017] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Hamed Akbarzadeh
- Department of Chemistry, Faculty of Basic Sciences, Hakim Sabzevari University, 96179-76487 Sabzevar, Iran
| | - Esmat Mehrjouei
- Department of Chemistry, Faculty of Basic Sciences, Hakim Sabzevari University, 96179-76487 Sabzevar, Iran
| | - Arezoo Moradi
- Department of Chemistry, Faculty of Basic Sciences, Hakim Sabzevari University, 96179-76487 Sabzevar, Iran
| | - Amir Nasser Shamkhali
- Department of Chemistry, Faculty of Sciences, University of Mohaghegh Ardabili, 56199-11367 Ardabil, Iran
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17
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Frei M, Köhler C, Dietel L, Martin J, Wiedenmann F, Zengerle R, Kerzenmacher S. Pulsed Electrodeposition of Highly Porous Pt Alloys for use in Methanol, Formic Acid, and Glucose Fuel Cells. ChemElectroChem 2018. [DOI: 10.1002/celc.201800035] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Maxi Frei
- IMTEK - Department of Microsystems Engineering; University of Freiburg; Georges-Koehler-Allee 103 79110 Freiburg Germany
| | - Christian Köhler
- IMTEK - Department of Microsystems Engineering; University of Freiburg; Georges-Koehler-Allee 103 79110 Freiburg Germany
| | - Lisa Dietel
- IMTEK - Department of Microsystems Engineering; University of Freiburg; Georges-Koehler-Allee 103 79110 Freiburg Germany
| | - Julian Martin
- IMTEK - Department of Microsystems Engineering; University of Freiburg; Georges-Koehler-Allee 103 79110 Freiburg Germany
| | - Felix Wiedenmann
- IMTEK - Department of Microsystems Engineering; University of Freiburg; Georges-Koehler-Allee 103 79110 Freiburg Germany
| | - Roland Zengerle
- IMTEK - Department of Microsystems Engineering; University of Freiburg; Georges-Koehler-Allee 103 79110 Freiburg Germany
- BIOSS - Centre for Biological Signalling Studies; University of Freiburg; Schänzlestr. 18 79104 Freiburg Germany
- Hahn-Schickard; Georges-Koehler-Allee 103 79110 Freiburg Germany
| | - Sven Kerzenmacher
- IMTEK - Department of Microsystems Engineering; University of Freiburg; Georges-Koehler-Allee 103 79110 Freiburg Germany
- University of Bremen; Center for Environmental Research and Sustainable Technology (UFT); Leobener Strasse 1 28359 Bremen Germany
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18
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Wang J, Zhang P, Xiahou Y, Wang D, Xia H, Möhwald H. Simple Synthesis of Au-Pd Alloy Nanowire Networks as Macroscopic, Flexible Electrocatalysts with Excellent Performance. ACS APPLIED MATERIALS & INTERFACES 2018; 10:602-613. [PMID: 29218987 DOI: 10.1021/acsami.7b14955] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
The present work introduces a new way to prepare Au-Pd alloy nanowire networks (NWNs) via deposition of Pd atoms onto Au nanowires in reaction media at room temperature without the aid of additional reducing agents. Thanks to their excellent colloidal stability in water as well as in ethanol, the resulting NWNs can be utilized to produce composite thin films with Nafion (perfluorinated sulfonic acid) with dimensions above dozens of square centimeters by means of solution casting on the glass substrate. Most importantly, these films can be easily transferred onto different solid substrates by lift-off technology. Moreover, the resulting Au-Pd alloy NWNs can also be easily and thoroughly loaded into macroscopic carbon fiber cloth (CFC). Both the Au-Pd alloy NWN/Nafion composite film and the Au-Pd alloy NWN-loaded CFC can be used as flexible electrodes for electrocatalysis of ethanol oxidation, with electrocatalytic performance at different distorted states superior by 2 orders of magnitude to those reported in the literature (e.g., commercial Pd/C catalysts and Pd-based nanostructured catalysts). This work opens new possibilities for the large-scale manufacturing of electrodes for fuel cells.
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Affiliation(s)
- Jin Wang
- State Key Laboratory of Crystal Materials, Shandong University , Jinan 250100, P. R. China
| | - Peina Zhang
- State Key Laboratory of Crystal Materials, Shandong University , Jinan 250100, P. R. China
| | - Yujiao Xiahou
- State Key Laboratory of Crystal Materials, Shandong University , Jinan 250100, P. R. China
| | - Dayang Wang
- State Key Laboratory of Inorganic Synthesis and Preparative Chemistry, College of Chemistry, Jilin University , Changchun 130012, P. R. China
| | - Haibing Xia
- State Key Laboratory of Crystal Materials, Shandong University , Jinan 250100, P. R. China
| | - Helmuth Möhwald
- Max Planck Institute of Colloids and Interfaces, Potsdam-Golm Science Park , 14476 Potsdam, Germany
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19
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Tojo C, Buceta D, López-Quintela MA. Bimetallic nanoparticles synthesized in microemulsions: A computer simulation study on relationship between kinetics and metal segregation. J Colloid Interface Sci 2018; 510:152-161. [DOI: 10.1016/j.jcis.2017.09.057] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2017] [Revised: 09/13/2017] [Accepted: 09/14/2017] [Indexed: 11/24/2022]
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20
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Shubin Y, Plyusnin P, Sharafutdinov M, Makotchenko E, Korenev S. Successful synthesis and thermal stability of immiscible metal Au-Rh, Au-Ir andAu-Ir-Rh nanoalloys. NANOTECHNOLOGY 2017; 28:205302. [PMID: 28383287 DOI: 10.1088/1361-6528/aa6bc9] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
We successfully prepared face-centred cubic nanoalloys in systems of Au-Ir, Au-Rh and Au-Ir-Rh, with large bulk miscibility gaps, in one-run reactions under thermal decomposition of specially synthesised single-source precursors, namely, [AuEn2][Ir(NO2)6], [AuEn2][Ir(NO2)6] х [Rh(NO2)6]1-х and [AuEn2][Rh(NO2)6]. The precursors employed contain all desired metals 'mixed' at the atomic level, thus providing significant advantages for obtaining alloys. The observations using high-resolution transmission electron microscopy show that the nanoalloy structures are composed of well-dispersed aggregates of crystalline domains with a mean size of 5 ± 3 nm. Еnergy dispersive x-ray spectroscopy and x-ray powder diffraction (XRD) measurements confirm the formation of AuIr, AuRh, AuIr0.75Rh0.25, AuIr0.50Rh0.50 and AuIr0.25Rh0.75 metastable solid solutions. In situ high-temperature synchrotron XRD (HTXRD) was used to study the formation mechanism of nanoalloys. The observed transformations are described by the 'conversion chemistry' mechanism characterised by the primary development of particles comprising atoms of only one type, followed by a chemical reaction resulting in the final formation of a nanoalloy. The obtained metastable nanoalloys exhibit essential thermal stability. Exposure to 180 °C for 30 h does not cause any dealloying process.
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Affiliation(s)
- Yury Shubin
- Nikolaev Institute of Inorganic Chemistry, 3, Acad. Lavrentiev Ave., Novosibirsk, 630090, Russia. Novosibirsk State University, 2, Pirogova Str., Novosibirsk. 630090, Russia
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21
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On Metal Segregation of Bimetallic Nanocatalysts Prepared by a One-Pot Method in Microemulsions. Catalysts 2017. [DOI: 10.3390/catal7020068] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
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22
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Synthesis of Highly Dispersed and Highly Stable Supported Au–Pt Bimetallic Catalysts by a Two-Step Method. Catal Letters 2016. [DOI: 10.1007/s10562-016-1893-4] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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23
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Dessources S, Morais C, Napporn TW, Kokoh KB. Reversible Electrocatalytic Activity of Carbon-Supported PtxNi1−xin Hydrogen Reactions. Chemphyschem 2016; 17:3964-3973. [DOI: 10.1002/cphc.201600733] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2016] [Revised: 09/13/2016] [Indexed: 01/01/2023]
Affiliation(s)
- Samuel Dessources
- IC2MP UMR 7285 CNRS Université de Poitiers; 4, rue Michel Brunet B27 TSA 51106 86073 Poitiers CEDEX 09 France
| | - Claudia Morais
- IC2MP UMR 7285 CNRS Université de Poitiers; 4, rue Michel Brunet B27 TSA 51106 86073 Poitiers CEDEX 09 France
| | - Têko W. Napporn
- IC2MP UMR 7285 CNRS Université de Poitiers; 4, rue Michel Brunet B27 TSA 51106 86073 Poitiers CEDEX 09 France
| | - K. Boniface Kokoh
- IC2MP UMR 7285 CNRS Université de Poitiers; 4, rue Michel Brunet B27 TSA 51106 86073 Poitiers CEDEX 09 France
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24
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One-pot synthesis of reduced graphene oxide supported gold-based nanomaterials as robust nanocatalysts for glucose electrooxidation. Electrochim Acta 2016. [DOI: 10.1016/j.electacta.2016.06.169] [Citation(s) in RCA: 49] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
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25
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Moghimi N, Rahsepar F, Leung K. Supported binary hybrid nanomaterials and their applications. Coord Chem Rev 2016. [DOI: 10.1016/j.ccr.2016.04.011] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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26
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Li D, Meng F, Wang H, Jiang X, Zhu Y. Nanoporous AuPt alloy with low Pt content: a remarkable electrocatalyst with enhanced activity towards formic acid electro-oxidation. Electrochim Acta 2016. [DOI: 10.1016/j.electacta.2016.01.001] [Citation(s) in RCA: 41] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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27
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Kitahara M, Kubara S, Takai A, Takimoto D, Enomoto S, Yamauchi Y, Sugimoto W, Kuroda K. Preparation of Mesoporous Bimetallic Au-Pt with a Phase-Segregated Heterostructure Using Mesoporous Silica. Chemistry 2015; 21:19142-8. [PMID: 26586355 DOI: 10.1002/chem.201503174] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2015] [Indexed: 11/06/2022]
Abstract
Mesoporous bimetallic Au-Pt with a phase-segregated heterostructure has been prepared by using mesoporous silica SBA-15 as a template. Au nanoparticles were prepared as a seed metal within the mesopores, and subsequently Pt was deposited, sandwiching the Au seeds. Energy-dispersive X-ray (EDX) spectral mapping showed that the framework of mesoporous bimetallic Au-Pt, prepared by removing the silica template with HF, was composed of Au nanoparticles joined with Pt nanowires. The Au/Pt ratio of the mesoporous bimetallic Au-Pt could be varied by controlling the number of Au deposition cycles. Pre-adsorbed CO (COad) stripping voltammetry of the mesoporous bimetallic Au-Pt showed that the surfaces of the joined bimetallic structure were electrochemically active. This could be attributed to the open framework structure having a high ratio of exposed bimetallic mesopore surfaces. The described preparative approach, involving a mesoporous silica template and stepwise deposition within the mesopores, enables control of the nanostructure of the bimetallic material, which is greatly promising for the further development of synthetic methodologies for bimetallic structures.
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Affiliation(s)
- Masaki Kitahara
- Department of Applied Chemistry, Faculty of Science and Engineering, Waseda University, Ohkubo-3, Shinjuku-ku, Tokyo 169-8555 (Japan), Fax: (+81) 3-5286-3199
| | - Saori Kubara
- Department of Applied Chemistry, Faculty of Science and Engineering, Waseda University, Ohkubo-3, Shinjuku-ku, Tokyo 169-8555 (Japan), Fax: (+81) 3-5286-3199
| | - Azusa Takai
- Department of Applied Chemistry, Faculty of Science and Engineering, Waseda University, Ohkubo-3, Shinjuku-ku, Tokyo 169-8555 (Japan), Fax: (+81) 3-5286-3199
| | - Daisuke Takimoto
- Materials and Chemical Engineering, Faculty of Textile Science and Technology, Shinshu University, Tokida-3, Ueda, Nagano 386-8567 (Japan)
| | - Shinpei Enomoto
- Kagami Memorial Research Institute for Materials Science and Technology, Waseda University, Nishiwaseda-2, Shinjuku-ku, Tokyo 169-0051 (Japan)
| | - Yusuke Yamauchi
- World Premier International (WPI) Research Center for Materials, Nanoarchitectonics (MANA), National Institute for Materials Science (NIMS), Namiki-1, Tsukuba, Ibaraki 305-0044 (Japan)
| | - Wataru Sugimoto
- Materials and Chemical Engineering, Faculty of Textile Science and Technology, Shinshu University, Tokida-3, Ueda, Nagano 386-8567 (Japan)
| | - Kazuyuki Kuroda
- Department of Applied Chemistry, Faculty of Science and Engineering, Waseda University, Ohkubo-3, Shinjuku-ku, Tokyo 169-8555 (Japan), Fax: (+81) 3-5286-3199. .,Kagami Memorial Research Institute for Materials Science and Technology, Waseda University, Nishiwaseda-2, Shinjuku-ku, Tokyo 169-0051 (Japan).
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28
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Bi C, Feng C, Miao T, Song Y, Wang D, Xia H. Understanding the effect of ultrathin AuPd alloy shells of irregularly shaped Au@AuPd nanoparticles with high-index facets on enhanced performance of ethanol oxidation. NANOSCALE 2015; 7:20105-20116. [PMID: 26567631 DOI: 10.1039/c5nr06035d] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
In this study, irregularly shaped, concave cuboidal Au@AuPd nanoparticles (ISCC-Au@AuPd NPs) with high-index facets were synthesized via Pd overgrowth on pre-formed ISCC-Au NPs with a concentration of Pd precursors as low as 2%. The AuPd alloy nature of the resulting shells was confirmed by X-ray photoelectron spectroscopy, cyclic voltammogram analysis, and energy dispersive X-ray spectroscopy. Among the irregularly shaped NPs obtained, the ISCC-Au97.5@Au0.5Pd2.0 NPs display the largest electrochemically active surface area (up to 92.11 m(2) g(-1)), as their closed-packed agglomeration was prevented, and the best long-term stability with respect to ethanol oxidation (0.50 M) in alkaline media (0.30 KOH) by efficiently removing intermediates. Their mass- and ECSA-normalized current densities (4.15 A mgPd(-1) and 4.51 mA cm(-2)) are about 20.7 times and 6.9 times higher than those of commercial Pd/C catalysts (0.20 A mgPd(-1) and 0.65 mA cm(-2)), respectively.
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Affiliation(s)
- Cuixia Bi
- State Key Laboratory of Crystal Materials, Shandong University, Jinan, 250100, P. R. China.
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29
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Luo Y, Mora-Hernández J, Estudillo-Wong L, Arce-Estrada E, Alonso-Vante N. Nanostructured palladium tailored via carbonyl chemical route towards oxygen reduction reaction. Electrochim Acta 2015. [DOI: 10.1016/j.electacta.2015.05.140] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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30
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Buceta D, Tojo C, Vukmirovic MB, Deepak FL, López-Quintela MA. Controlling Bimetallic Nanostructures by the Microemulsion Method with Subnanometer Resolution Using a Prediction Model. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2015; 31:7435-7439. [PMID: 26035721 DOI: 10.1021/acs.langmuir.5b01455] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
We present a theoretical model to predict the atomic structure of Au/Pt nanoparticles synthesized in microemulsions. Excellent concordance with the experimental results shows that the structure of the nanoparticles can be controlled at subnanometer resolution simply by changing the reactant concentration. The results of this study not only offer a better understanding of the complex mechanisms governing reactions in microemulsions, but open up a simple new way to synthesize bimetallic nanoparticles with ad hoc controlled nanostructures.
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Affiliation(s)
- David Buceta
- †Laboratorio de Magnetismo y Nanotecnología, University of Santiago de Compostela, E-15782 Santiago de Compostela, Spain
- ‡Chemistry Department, Brookhaven National Laboratory, Upton, New York 11973, United States
| | - Concha Tojo
- §Physical Chemistry Department, University of Vigo, E-36310 Vigo, Spain
| | - Miomir B Vukmirovic
- ‡Chemistry Department, Brookhaven National Laboratory, Upton, New York 11973, United States
| | - Francis Leonard Deepak
- ∥INL - International Iberian Nanotechnology Laboratory, Av. Mestre José Veiga s/n, 4715-330 Braga, Portugal
| | - M Arturo López-Quintela
- †Laboratorio de Magnetismo y Nanotecnología, University of Santiago de Compostela, E-15782 Santiago de Compostela, Spain
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31
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Usón L, Sebastian V, Mayoral A, Hueso JL, Eguizabal A, Arruebo M, Santamaria J. Spontaneous formation of Au-Pt alloyed nanoparticles using pure nano-counterparts as starters: a ligand and size dependent process. NANOSCALE 2015; 7:10152-61. [PMID: 25985914 PMCID: PMC4447060 DOI: 10.1039/c5nr01819f] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/21/2015] [Accepted: 04/27/2015] [Indexed: 05/23/2023]
Abstract
In this work we investigate the formation of PtAu monodisperse alloyed nanoparticles by ageing pure metallic Au and Pt small nanoparticles (sNPs), nanoparticle size <5 nm, under certain conditions. We demonstrate that those bimetallic entities can be obtained by controlling the size of the initial metallic sNPs separately prepared and by selecting their appropriate capping agents. The formation of this spontaneous phenomenon was studied using HR-STEM, EDS, ionic conductivity, UV-Vis spectroscopy and cyclic voltammetry. Depending on the type of capping agent used and the size of the initial Au sNPs, three different materials were obtained: (i) AuPt bimetallic sNPs showing a surface rich in Au atoms, (ii) segregated Au and Pt sNPs and (iii) a mixture of bimetallic nanoparticles as well as Pt sNPs and Au NPs. Surface segregation energies and the nature of the reaction environment are the driving forces to direct the distribution of atoms in the bimetallic sNPs. PtAu alloyed nanoparticles were obtained after 150 h of reaction at room temperature if a weak capping agent was used for the stabilization of the nanoparticles. It was also found that Au atoms diffuse towards Pt sNPs, producing a surface enriched in Au atoms. This study shows that even pure nanoparticles are prone to be modified by the surrounding nanoparticles to give rise to new nanomaterials if atomic diffusion is feasible.
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Affiliation(s)
- Laura Usón
- Institute of Nanoscience of Aragon (INA) and Department of Chemical Engineering and Environmental Technology , University of Zaragoza , C/Mariano Esquillor , s/n , I+D+i Building , 50018 , Zaragoza , Spain . ; ; Fax: +34 976 761879 ; Tel: +34 876555441
| | - Victor Sebastian
- Institute of Nanoscience of Aragon (INA) and Department of Chemical Engineering and Environmental Technology , University of Zaragoza , C/Mariano Esquillor , s/n , I+D+i Building , 50018 , Zaragoza , Spain . ; ; Fax: +34 976 761879 ; Tel: +34 876555441
- CIBER de Bioingeniería , Biomateriales y Nanomedicina (CIBER-BBN) , Centro de Investigación Biomédica en Red , C/Monforte de Lemos 3-5 , Pabellón 11 , 28029 Madrid, Spain
| | - Alvaro Mayoral
- Institute of Nanoscience of Aragon (INA) and Department of Chemical Engineering and Environmental Technology , University of Zaragoza , C/Mariano Esquillor , s/n , I+D+i Building , 50018 , Zaragoza , Spain . ; ; Fax: +34 976 761879 ; Tel: +34 876555441
- Laboratorio de Microscopias Avanzadas (LMA) , Instituto de Nanociencia de Aragon (INA) , Universidad de Zaragoza , Mariano Esquillor I+D , 50018, Zaragoza , Spain
| | - Jose L. Hueso
- Institute of Nanoscience of Aragon (INA) and Department of Chemical Engineering and Environmental Technology , University of Zaragoza , C/Mariano Esquillor , s/n , I+D+i Building , 50018 , Zaragoza , Spain . ; ; Fax: +34 976 761879 ; Tel: +34 876555441
- CIBER de Bioingeniería , Biomateriales y Nanomedicina (CIBER-BBN) , Centro de Investigación Biomédica en Red , C/Monforte de Lemos 3-5 , Pabellón 11 , 28029 Madrid, Spain
| | - Adela Eguizabal
- Institute of Nanoscience of Aragon (INA) and Department of Chemical Engineering and Environmental Technology , University of Zaragoza , C/Mariano Esquillor , s/n , I+D+i Building , 50018 , Zaragoza , Spain . ; ; Fax: +34 976 761879 ; Tel: +34 876555441
| | - Manuel Arruebo
- Institute of Nanoscience of Aragon (INA) and Department of Chemical Engineering and Environmental Technology , University of Zaragoza , C/Mariano Esquillor , s/n , I+D+i Building , 50018 , Zaragoza , Spain . ; ; Fax: +34 976 761879 ; Tel: +34 876555441
- CIBER de Bioingeniería , Biomateriales y Nanomedicina (CIBER-BBN) , Centro de Investigación Biomédica en Red , C/Monforte de Lemos 3-5 , Pabellón 11 , 28029 Madrid, Spain
| | - Jesus Santamaria
- Institute of Nanoscience of Aragon (INA) and Department of Chemical Engineering and Environmental Technology , University of Zaragoza , C/Mariano Esquillor , s/n , I+D+i Building , 50018 , Zaragoza , Spain . ; ; Fax: +34 976 761879 ; Tel: +34 876555441
- CIBER de Bioingeniería , Biomateriales y Nanomedicina (CIBER-BBN) , Centro de Investigación Biomédica en Red , C/Monforte de Lemos 3-5 , Pabellón 11 , 28029 Madrid, Spain
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32
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Tojo C, de Dios M, Buceta D, López-Quintela MA. Cage-like effect in Au-Pt nanoparticle synthesis in microemulsions: a simulation study. Phys Chem Chem Phys 2015; 16:19720-31. [PMID: 25115366 DOI: 10.1039/c4cp02936d] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
The different distributions of metals in bimetallic nanoparticles synthesized in microemulsions were studied by computer simulation. The simulations demonstrated that if the difference between the reduction potentials of both metals is about 0.15-0.3 V, the compartmentalization of the reaction media causes the accumulation of slower reduction reactants in the microemulsions droplets, which favours the chemical reaction like a cage effect: increasing the local concentration of the slower reduction metal salt gives rise to a faster reduction, so the differences in reduction rates of both metals are attenuated. A more coincidental reduction of both metals deeply affects the nanoparticle structure, causing a better mixed alloy. This effect will be more pronounced when the concentration is higher and the intermicellar exchange rate is faster. This means that for any fixed microemulsion the nanoparticle structure can be modified by changing the reactant concentration: the core can be enriched in the faster reduction metal by lower concentrations, and the shell can be enriched in the slower metal by higher concentrations. Based on these observations, this study suggests a route to help experimentalists better create nanoparticles with a pre-defined structure.
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Affiliation(s)
- C Tojo
- Physical Chemistry Department, Faculty of Chemistry, University of Vigo, E-36310 Vigo, Spain.
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33
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Dolinska J, Kannan P, Sobczak JW, Opallo M. Glucose Electrooxidation in Bimetallic Suspensions of Nanoparticles in Alkaline Media. ChemElectroChem 2015. [DOI: 10.1002/celc.201402436] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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34
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Holade Y, Servat K, Napporn TW, Kokoh KB. Electrocatalytic properties of nanomaterials synthesized from “Bromide Anion Exchange” method - Investigations of glucose and glycerol oxidation. Electrochim Acta 2015. [DOI: 10.1016/j.electacta.2014.11.072] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
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35
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Recent Advances in Carbon Supported Metal Nanoparticles Preparation for Oxygen Reduction Reaction in Low Temperature Fuel Cells. Catalysts 2015. [DOI: 10.3390/catal5010310] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
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36
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Sadakiyo M, Heima M, Yamamoto T, Matsumura S, Matsuura M, Sugimoto S, Kato K, Takata M, Yamauchi M. Preparation of solid–solution type Fe–Co nanoalloys by synchronous deposition of Fe and Co using dual arc plasma guns. Dalton Trans 2015; 44:15764-8. [DOI: 10.1039/c5dt02815a] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Abstract
We succeeded in the efficient preparation of well-dispersed Fe–Co nanoalloys (NAs) using the arc plasma deposition method.
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Affiliation(s)
- Masaaki Sadakiyo
- International Institute for Carbon-Neutral Energy Research (WPI-I2CNER)
- Kyushu University
- Fukuoka 819-0395
- Japan
- Core Research for Evolutional Science and Technology (CREST)
| | - Minako Heima
- International Institute for Carbon-Neutral Energy Research (WPI-I2CNER)
- Kyushu University
- Fukuoka 819-0395
- Japan
- Core Research for Evolutional Science and Technology (CREST)
| | - Tomokazu Yamamoto
- Core Research for Evolutional Science and Technology (CREST)
- Japan Science and Technology Agency (JST)
- Tokyo 102-0076
- Japan
- Department of Applied Quantum Physics and Nuclear Engineering
| | - Syo Matsumura
- Core Research for Evolutional Science and Technology (CREST)
- Japan Science and Technology Agency (JST)
- Tokyo 102-0076
- Japan
- Department of Applied Quantum Physics and Nuclear Engineering
| | - Masashi Matsuura
- Core Research for Evolutional Science and Technology (CREST)
- Japan Science and Technology Agency (JST)
- Tokyo 102-0076
- Japan
- Department of Materials Science
| | - Satoshi Sugimoto
- Core Research for Evolutional Science and Technology (CREST)
- Japan Science and Technology Agency (JST)
- Tokyo 102-0076
- Japan
- Department of Materials Science
| | - Kenichi Kato
- Core Research for Evolutional Science and Technology (CREST)
- Japan Science and Technology Agency (JST)
- Tokyo 102-0076
- Japan
- RIKEN SPring-8 Center
| | | | - Miho Yamauchi
- International Institute for Carbon-Neutral Energy Research (WPI-I2CNER)
- Kyushu University
- Fukuoka 819-0395
- Japan
- Core Research for Evolutional Science and Technology (CREST)
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37
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Kinetic Study on the Formation of Bimetallic Core-Shell Nanoparticles via Microemulsions. MATERIALS 2014; 7:7513-7532. [PMID: 28788260 PMCID: PMC5510057 DOI: 10.3390/ma7117513] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/23/2014] [Revised: 10/17/2014] [Accepted: 11/12/2014] [Indexed: 11/27/2022]
Abstract
Computer calculations were carried out to determine the reaction rates and the mean structure of bimetallic nanoparticles prepared via a microemulsion route. The rates of reaction of each metal were calculated for a particular microemulsion composition (fixed intermicellar exchange rate) and varying reduction rate ratios between both metal and metal salt concentration inside the micelles. Model predictions show that, even in the case of a very small difference in reduction potential of both metals, the formation of an external shell in a bimetallic nanoparticle is possible if a large reactant concentration is used. The modification of metal arrangement with concentration was analyzed from a mechanistic point of view, and proved to be due to the different impact of confinement on each metal: the reaction rate of the faster metal is only controlled by the intermicellar exchange rate but the slower metal is also affected by a cage-like effect.
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38
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Tojo C, González E, Vila-Romeu N. The impact of the confinement of reactants on the metal distribution in bimetallic nanoparticles synthesized in reverse micelles. BEILSTEIN JOURNAL OF NANOTECHNOLOGY 2014; 5:1966-1979. [PMID: 25383307 PMCID: PMC4222381 DOI: 10.3762/bjnano.5.206] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/28/2014] [Accepted: 10/02/2014] [Indexed: 06/04/2023]
Abstract
A kinetic study on the formation of bimetallic nanoparticles in microemulsions was carried out by computer simulation. A comprehensive analysis of the resulting nanostructures was performed regarding the influence of intermicellar exchange on reactivity. The objects of this study were metals having a difference in standard reduction potential of about 0.2-0.3 V. Relatively flexible microemulsions were employed and the concentration of the reactants was kept constant, while the reaction rate of each metal was monitored as a function of time using different reactant proportions. It was demonstrated that the reaction rates depend not only on the chemical reduction rate, but also on the intermicellar exchange rate. Furthermore, intermicellar exchange causes the accumulation of slower precursors inside the micelles, which favors chemical reduction. As a consequence, slower reduction rates strongly correlate with the number of reactants in this confined media. On the contrary, faster reduction rates are limited by the intermicellar exchange rate and not the number of reactants inside the micelles. As a result, different precursor proportions lead to different sequences of metal reduction, and thus the arrangement of the two metals in the nanostructure can be manipulated.
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Affiliation(s)
- Concha Tojo
- Physical Chemistry Department, Faculty of Chemistry, University of Vigo, 36310 Vigo, Spain
| | - Elena González
- Physical Chemistry Department, Faculty of Chemistry, University of Vigo, 36310 Vigo, Spain
| | - Nuria Vila-Romeu
- Physical Chemistry Department, Faculty of Sciences, University of Vigo, 32004 Ourense, Spain
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39
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Holade Y, MacVittie K, Conlon T, Guz N, Servat K, Napporn TW, Kokoh KB, Katz E. Pacemaker Activated by an Abiotic Biofuel Cell Operated in Human Serum Solution. ELECTROANAL 2014. [DOI: 10.1002/elan.201400440] [Citation(s) in RCA: 48] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
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40
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Holade Y, Both Engel A, Tingry S, Cherifi A, Cornu D, Servat K, Napporn TW, Kokoh KB. Insights on Hybrid Glucose Biofuel Cells Based on Bilirubin Oxidase Cathode and Gold-Based Anode Nanomaterials. ChemElectroChem 2014. [DOI: 10.1002/celc.201402142] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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41
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Luo Y, Habrioux A, Calvillo L, Granozzi G, Alonso-Vante N. Yttrium Oxide/Gadolinium Oxide-Modified Platinum Nanoparticles as Cathodes for the Oxygen Reduction Reaction. Chemphyschem 2014; 15:2136-44. [DOI: 10.1002/cphc.201400042] [Citation(s) in RCA: 43] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2014] [Revised: 03/10/2014] [Indexed: 11/11/2022]
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42
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Dolinska J, Kannan P, Sashuk V, Jonsson-Niedziolka M, Kaszkur Z, Lisowski W, Opallo M. Electrocatalytic Synergy on Nanoparticulate Films Prepared from Oppositely Charged Pt and Au Nanoparticles. ChemElectroChem 2014. [DOI: 10.1002/celc.201402010] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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43
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Xiao S, Xiao F, Hu Y, Yuan S, Wang S, Qian L, Liu Y. Hierarchical nanoporous gold-platinum with heterogeneous interfaces for methanol electrooxidation. Sci Rep 2014; 4:4370. [PMID: 24621809 PMCID: PMC3952144 DOI: 10.1038/srep04370] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2013] [Accepted: 02/25/2014] [Indexed: 11/09/2022] Open
Abstract
The electrocatalysts utilized as the prospective electrodes in fuel cells and high efficient energy conversion devices require both the interconnected channels for efficient electrolyte transportation and the superior catalytic activity with long service life. In this work, nanoporous gold with the rigid skeletons in three dimensions is partially decorated by porous platinum shell containing nanoscale interstitials, aiming to create the heterogeneous gold-platinum interfaces and facilitate the electrolyte transportation as well. In comparison with no catalytic activity of bare nanoporous gold, the catalytic activity of hierarchical nanoporous gold-platinum towards electrochemical oxidation of methanol increases with the loading level of platinum shells, resulting in the highest electrochemical area of 70.4 m(2)·g(-1) after the normalization by the mass of platinum. Heterogeneous gold-platinum interfaces affect the tolerance of the absorbed intermediate species because of the oxidization by the oxygenated species absorbed on the gold surface and the enhanced ion transportation within the porous platinum shell.
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Affiliation(s)
- Shuang Xiao
- 1] School of Physics, Huazhong University of Science and Technology, Wuhan, Hubei, 430074, P. R. China [2]
| | - Fei Xiao
- 1] School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology, Wuhan, Hubei, 430074, P. R. China [2]
| | - Yuan Hu
- School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology, Wuhan, Hubei, 430074, P. R. China
| | - Songliu Yuan
- School of Physics, Huazhong University of Science and Technology, Wuhan, Hubei, 430074, P. R. China
| | - Shuai Wang
- School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology, Wuhan, Hubei, 430074, P. R. China
| | - Lihua Qian
- School of Physics, Huazhong University of Science and Technology, Wuhan, Hubei, 430074, P. R. China
| | - Yunqi Liu
- Beijing National Laboratory for Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, P. R. China
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44
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Holade Y, Morais C, Servat K, Napporn TW, Kokoh KB. Enhancing the available specific surface area of carbon supports to boost the electroactivity of nanostructured Pt catalysts. Phys Chem Chem Phys 2014; 16:25609-20. [DOI: 10.1039/c4cp03851g] [Citation(s) in RCA: 55] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
We report a convenient and straightforward thermal pre-treatment to improve the physicochemical properties of carbon-based substrates to boost the catalytic activity of platinum nanoparticles.
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Affiliation(s)
- Yaovi Holade
- Université de Poitiers
- UMR CNRS 7285
- 86073 Poitiers cedex 09, France
| | - Claudia Morais
- Université de Poitiers
- UMR CNRS 7285
- 86073 Poitiers cedex 09, France
| | - Karine Servat
- Université de Poitiers
- UMR CNRS 7285
- 86073 Poitiers cedex 09, France
| | - Teko W. Napporn
- Université de Poitiers
- UMR CNRS 7285
- 86073 Poitiers cedex 09, France
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45
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Ceriotti A, Macchi P, Sironi A, El Afefey S, Daghetta M, Fedi S, de Biani FF, Della Pergola R. Cooperative Effects of Electron Donors and Acceptors for the Stabilization of Elusive Metal Cluster Frameworks: Synthesis and Solid-State Structures of [Pt19(CO)24(μ4-AuPPh3)3]− and [Pt19(CO)24{μ4-Au2(PPh3)2}2]. Inorg Chem 2013; 52:1960-4. [DOI: 10.1021/ic302282y] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Alessandro Ceriotti
- Dipartimento di Chimica, Università degli Studi di Milano, via Golgi 19, 20133 Milano, Italy
| | - Piero Macchi
- Department of Chemistry
and Biochemistry, University of Bern, Freiestrasse 3, 3012 Bern, Switzerland
| | - Annalisa Sironi
- Dipartimento di Scienze dell’Ambiente
e del Territorio, Università di Milano—Bicocca, piazza della Scienza 1, 20126 Milano, Italy
| | - Simona El Afefey
- Dipartimento di Chimica, Università degli Studi di Milano, via Golgi 19, 20133 Milano, Italy
- Dipartimento di Chimica, Università degli Studi di Siena, via Aldo Moro, 53100 Siena, Italy
| | - Matteo Daghetta
- Dipartimento di Chimica, Materiali e Ingegneria Chimica
“Giulio Natta”, Politecnico di Milano, Piazza L. Da Vinci 32, 20133 Milano, Italy
| | - Serena Fedi
- Dipartimento di Chimica, Università degli Studi di Siena, via Aldo Moro, 53100 Siena, Italy
| | | | - Roberto Della Pergola
- Dipartimento di Scienze dell’Ambiente
e del Territorio, Università di Milano—Bicocca, piazza della Scienza 1, 20126 Milano, Italy
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46
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Zhao L, Heinig N, Leung KT. Formation of Au-Pt alloy nanoparticles on a Si substrate by simple dip-coating at room temperature. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2013; 29:927-931. [PMID: 23234580 DOI: 10.1021/la303809m] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
Spherical Au-Pt alloy nanoparticles of 10 nm average size have been prepared on a H-terminated Si(100) substrate by an extremely simple method of dip-coating. X-ray photoelectron spectroscopy and glancing-incidence X-ray diffraction confirm the formation of Au-Pt alloy. The Au(3+) ions are first reduced on the Si substrate upon dipping, and the freshly formed Au nuclei then work as a "catalyst" by promoting the reduction of PtCl(6)(2-) ions on the Au nuclei. The subsequent interdiffusion of Au and Pt atoms leads to the observed alloy formation. The present method provides an environment-friendly, low-cost route to preparing anode electrodes in fuel cells.
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Affiliation(s)
- Liyan Zhao
- WATLab and Department of Chemistry, University of Waterloo, Waterloo, Ontario, Canada
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47
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Yamauchi Y, Tonegawa A, Komatsu M, Wang H, Wang L, Nemoto Y, Suzuki N, Kuroda K. Electrochemical Synthesis of Mesoporous Pt–Au Binary Alloys with Tunable Compositions for Enhancement of Electrochemical Performance. J Am Chem Soc 2012; 134:5100-9. [DOI: 10.1021/ja209044g] [Citation(s) in RCA: 218] [Impact Index Per Article: 18.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Affiliation(s)
- Yusuke Yamauchi
- World Premier
International
(WPI) Research Center for Materials Nanoarchitectonics (MANA), National Institute for Materials Science (NIMS), 1-1
Namiki, Tsukuba, Ibaraki 305-0044, Japan
- PRESTO, Japan Science and Technology Agency (JST), 4-1-8 Honcho, Kawaguchi,
Saitama 332-0012, Japan
- Faculty
of Science and Engineering, Waseda University, 3-4-1 Ohkubo, Shinjuku, Tokyo 169-8555,
Japan
- Kagami Memorial Laboratory
for
Materials Science and Technology, Waseda University, 2-8-26 Nishi-Waseda, Shinjuku, Tokyo 169-0051, Japan
| | - Akihisa Tonegawa
- Faculty
of Science and Engineering, Waseda University, 3-4-1 Ohkubo, Shinjuku, Tokyo 169-8555,
Japan
| | - Masaki Komatsu
- Faculty
of Science and Engineering, Waseda University, 3-4-1 Ohkubo, Shinjuku, Tokyo 169-8555,
Japan
| | - Hongjing Wang
- World Premier
International
(WPI) Research Center for Materials Nanoarchitectonics (MANA), National Institute for Materials Science (NIMS), 1-1
Namiki, Tsukuba, Ibaraki 305-0044, Japan
- Faculty
of Science and Engineering, Waseda University, 3-4-1 Ohkubo, Shinjuku, Tokyo 169-8555,
Japan
| | - Liang Wang
- World Premier
International
(WPI) Research Center for Materials Nanoarchitectonics (MANA), National Institute for Materials Science (NIMS), 1-1
Namiki, Tsukuba, Ibaraki 305-0044, Japan
| | - Yoshihiro Nemoto
- World Premier
International
(WPI) Research Center for Materials Nanoarchitectonics (MANA), National Institute for Materials Science (NIMS), 1-1
Namiki, Tsukuba, Ibaraki 305-0044, Japan
| | - Norihiro Suzuki
- World Premier
International
(WPI) Research Center for Materials Nanoarchitectonics (MANA), National Institute for Materials Science (NIMS), 1-1
Namiki, Tsukuba, Ibaraki 305-0044, Japan
| | - Kazuyuki Kuroda
- Faculty
of Science and Engineering, Waseda University, 3-4-1 Ohkubo, Shinjuku, Tokyo 169-8555,
Japan
- Kagami Memorial Laboratory
for
Materials Science and Technology, Waseda University, 2-8-26 Nishi-Waseda, Shinjuku, Tokyo 169-0051, Japan
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48
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Alloyeau D. Transmission Electron Microscopy: A Multifunctional Tool for the Atomic-scale Characterization of Nanoalloys. NANOALLOYS 2012. [DOI: 10.1007/978-1-4471-4014-6_4] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
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49
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Ren L, Yan J, Yu P, Mao L. Energy-efficient electrodeposition of metal-based nanostructures through simultaneous deposition at both the cathode and the anode. Phys Chem Chem Phys 2012; 14:9768-73. [DOI: 10.1039/c2cp41393k] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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50
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Functionalized-carbon nanotube supported electrocatalysts and buckypaper-based biocathodes for glucose fuel cell applications. Electrochim Acta 2011. [DOI: 10.1016/j.electacta.2011.06.067] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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