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Shiba S, Ogata A, Matsushita S, Niwa O, Kunitake M, Matsuguchi M, Komoda M, Nishina Y. Diverse Hierarchical Meso/Nanoporous Pt Film Electrocatalysts Prepared via Hydrogen Adsorption-Assisted Dynamic Soft Templating. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2024; 40:16349-16360. [PMID: 39046223 DOI: 10.1021/acs.langmuir.4c01567] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 07/25/2024]
Abstract
In this study, we present an innovative approach for creating hierarchical meso/nanoporous Pt films using dynamic soft templating. The fabrication process, called dynamic soft templating, involves Pt electrodeposition within a specialized bicontinuous microemulsion (BME) system characterized by a sophisticated three-dimensional network comprising water and oil phases, surfactants, and cosurfactants. Pt electrodeposition exclusively occurs in the water phase of the BME. This results in a porous Pt film exhibiting a nanostructure mirroring the oil solution/water solution nanostructure (solution/solution structure) of the BME, the size of which can be tailored by adjusting the BME composition. Through a simultaneous interplay of Pt electrodeposition and overpotential deposition of hydrogen (H-OPD, dissociative adsorption of water), potential-dependent Pt mesostructures are dynamically shaped. As a result, we achieve diverse morphologies in the form of hierarchical meso/nanoporous Pt films. The potential applications of the films are evaluated as electrocatalysts for the methanol oxidation reaction (MOR), and it was found that the electrocatalytic performances seem to be sensitive to nanoporosity and not relevant to mesoporosity.
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Affiliation(s)
- Shunsuke Shiba
- Advanced Materials Research Laboratory, NiSiNa Materials Co. Ltd., 2-6-20-3, Kitagata, Kita-ku, Okayama 700-0803, Japan
| | - Ayano Ogata
- Department of Applied Chemistry, Graduate School of Science and Engineering, Ehime University, 3 Bunkyo-cho, Matsuyama, Ehime 790-8577, Japan
| | - Shin Matsushita
- Department of Applied Chemistry, Graduate School of Science and Engineering, Ehime University, 3 Bunkyo-cho, Matsuyama, Ehime 790-8577, Japan
| | - Osamu Niwa
- Advanced Science Research Laboratory, Saitama Institute of Technology, 1690 Fusaiji, Fukaya, Saitama 369-0293, Japan
| | - Masashi Kunitake
- Institute of Industrial Nanomaterials, Kumamoto University, 2-39-1 Kurokami, Chuou-ku, Kumamoto 860-8555, Japan
| | - Masanobu Matsuguchi
- Department of Applied Chemistry, Graduate School of Science and Engineering, Ehime University, 3 Bunkyo-cho, Matsuyama, Ehime 790-8577, Japan
| | - Masato Komoda
- The Research Institute for Interdisciplinary Science, Okayama University, 3-1-1 Tsushimanaka, Kita-ku, Okayama 700-8530, Japan
| | - Yuta Nishina
- The Research Institute for Interdisciplinary Science, Okayama University, 3-1-1 Tsushimanaka, Kita-ku, Okayama 700-8530, Japan
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Gómez E, Fons A, Cestaro R, Serrà A. Electrodeposition of CoNi alloys in a biocompatible DES and its suitability for activating the formation of sulfate radicals. Electrochim Acta 2022. [DOI: 10.1016/j.electacta.2022.141428] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Uji H, Watabe N, Komi T, Sakaguchi T, Akamatsu R, Mihara K, Kimura S. Downsizing to 25-nm reverse polymeric micelle composed of AB3-type polydepsipeptide with comprising siRNA. CHEM LETT 2022. [DOI: 10.1246/cl.210704] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Hirotaka Uji
- Department of Material Chemistry, Graduate School of Engineering, Kyoto University, Kyoto-Daigaku-Katsura, Nishikyo-ku, Kyoto 615-8510
| | - Naoki Watabe
- Department of Material Chemistry, Graduate School of Engineering, Kyoto University, Kyoto-Daigaku-Katsura, Nishikyo-ku, Kyoto 615-8510
| | - Tatsuya Komi
- Drug Discovery Research Laboratories, Kyoto R&D Center, Maruho Co., Ltd., 92 Awata-cho, Chudoji, Shimogyo-ku, Kyoto, 600-8815
| | - Tomoki Sakaguchi
- Drug Discovery Research Laboratories, Kyoto R&D Center, Maruho Co., Ltd., 92 Awata-cho, Chudoji, Shimogyo-ku, Kyoto, 600-8815
| | - Ryo Akamatsu
- Drug Discovery Research Laboratories, Kyoto R&D Center, Maruho Co., Ltd., 92 Awata-cho, Chudoji, Shimogyo-ku, Kyoto, 600-8815
| | - Kenta Mihara
- Department of Material Chemistry, Graduate School of Engineering, Kyoto University, Kyoto-Daigaku-Katsura, Nishikyo-ku, Kyoto 615-8510
| | - Shunsaku Kimura
- Department of Material Chemistry, Graduate School of Engineering, Kyoto University, Kyoto-Daigaku-Katsura, Nishikyo-ku, Kyoto 615-8510
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Abstract
Electrochemical technology has been proposed as an alternative or complementary method to classical inorganic synthesis for the fabrication of effective metallic solid catalysts. Microemulsion-based electrodeposition is a novel, fast, and one-step procedure to obtain mesoporous catalysts with extraordinarily effective areas, which can be used in heterogeneous catalysis for degradation of pollutants and clean energy production. The fabrication process involves conducting microemulsions containing ionic species (dissolved in aqueous solutions) as precursors of the metallic catalysts. The presence of nanometric droplets of organic or ionic-liquid components in the microemulsion defines the mesoporosity of the catalysts during a one-step electrodeposition process. This method also allows the fabrication of metal catalysts as supported mesoporous films or mesoporous nanowires with very high effective areas. Additionally, reactants have excellent accessibility to the overall surface of the catalysts. The different catalysts fabricated with the help of this technology have been tested for competitive degradation of organic pollutants and anodes' materials for fuel cell devices.
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Malgras V, Ji Q, Kamachi Y, Mori T, Shieh FK, Wu KCW, Ariga K, Yamauchi Y. Templated Synthesis for Nanoarchitectured Porous Materials. BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN 2015. [DOI: 10.1246/bcsj.20150143] [Citation(s) in RCA: 484] [Impact Index Per Article: 53.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Affiliation(s)
- Victor Malgras
- World Premier International (WPI) Research Center for Materials Nanoarchitechtonics (MANA), National Institute for Materials Science (NIMS)
| | - Qingmin Ji
- World Premier International (WPI) Research Center for Materials Nanoarchitechtonics (MANA), National Institute for Materials Science (NIMS)
| | - Yuichiro Kamachi
- World Premier International (WPI) Research Center for Materials Nanoarchitechtonics (MANA), National Institute for Materials Science (NIMS)
| | - Taizo Mori
- World Premier International (WPI) Research Center for Materials Nanoarchitechtonics (MANA), National Institute for Materials Science (NIMS)
- Liquid Crystal Institute, Chemical Physics Interdisciplinary Program, Kent State University
| | - Fa-Kuen Shieh
- Department of Chemistry, National Central University
| | - Kevin C.-W. Wu
- Department of Chemical Engineering, National Taiwan University
| | - Katsuhiko Ariga
- World Premier International (WPI) Research Center for Materials Nanoarchitechtonics (MANA), National Institute for Materials Science (NIMS)
| | - Yusuke Yamauchi
- World Premier International (WPI) Research Center for Materials Nanoarchitechtonics (MANA), National Institute for Materials Science (NIMS)
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De Nicola A, Kawakatsu T, Rosano C, Celino M, Rocco M, Milano G. Self-Assembly of Triton X-100 in Water Solutions: A Multiscale Simulation Study Linking Mesoscale to Atomistic Models. J Chem Theory Comput 2015; 11:4959-71. [DOI: 10.1021/acs.jctc.5b00485] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Antonio De Nicola
- Dipartimento
di Chimica e Biologia, Università di Salerno, I-84084 via
Ponte don Melillo, Salerno, Italy
| | - Toshihiro Kawakatsu
- Department
of Physics, Tohoku University, Aoba, Aramaki, Aoba-ku, Sendai 980-8578, Japan
| | - Camillo Rosano
- Biopolimeri
e Proteomica, IRCCS AOU San Martino-IST, Istituto Nazionale per la Ricerca sul Cancro, Largo R. Benzi 10 I-16132 Genova, Italy
| | - Massimo Celino
- ENEA, C.R. Casaccia, Via Anguillarese 301, I-00123 Roma, Italy
| | - Mattia Rocco
- Biopolimeri
e Proteomica, IRCCS AOU San Martino-IST, Istituto Nazionale per la Ricerca sul Cancro, Largo R. Benzi 10 I-16132 Genova, Italy
| | - Giuseppe Milano
- Dipartimento
di Chimica e Biologia, Università di Salerno, I-84084 via
Ponte don Melillo, Salerno, Italy
- IMAST S.c.a.r.l.
Technological District in Polymer and Composite Engineering, P. leBovio 22, I-80133, Napoli, Italy
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Serrà A, Gómez E, López-Barbera JF, Nogués J, Vallés E. Green electrochemical template synthesis of CoPt nanoparticles with tunable size, composition, and magnetism from microemulsions using an ionic liquid (bmimPF6). ACS NANO 2014; 8:4630-4639. [PMID: 24786899 DOI: 10.1021/nn500367q] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
Electrodeposition from microemulsions using ionic liquids is revealed as a green method for synthesizing magnetic alloyed nanoparticles, avoiding the use of aggressive reducing agents. Microemulsions containing droplets of aqueous solution (electrolytic solution containing Pt(IV) and Co(II) ions) in an ionic liquid (bmimPF6) define nanoreactors in which the electrochemical reduction takes place. Highly crystalline hcp alloyed CoPt nanoparticles, in the 10-120 nm range with a rather narrow size distribution, have been deposited on a conductive substrate. The relative amount of aqueous solution to ionic liquid determines the size of the nanoreactors, which serve as nanotemplates for the growth of the nanoparticles and hence determine their size and distribution. Further, the stoichiometry (Pt(x)Co(1-x)) of the particles can be tuned by the composition of the electrolytic solution inside the droplets. The control of the size and composition of the particles allows tailoring the room-temperature magnetic behavior of the nanoparticles from superparaparamagnetic to hard magnetic (with a coercivity of HC = 4100 Oe) in the as-obtained state.
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Affiliation(s)
- Albert Serrà
- Departament de Química Física and Institut de Nanociència i Nanotecnologia (IN2UB), Universitat de Barcelona , Martí i Franquès 1, 08028, Barcelona, Spain
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Serrà A, Gómez E, Calderó G, Esquena J, Solans C, Vallés E. Conditions that bicontinuous microemulsions must fulfill to be used as template for electrodeposition of nanostructures. J Electroanal Chem (Lausanne) 2014. [DOI: 10.1016/j.jelechem.2014.03.033] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Serrà A, Gómez E, Vallés E. Electrosynthesis method of CoPt nanoparticles in percolated microemulsions. RSC Adv 2014. [DOI: 10.1039/c4ra03880k] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
An electrochemical synthesis of CoPt nanoparticles on Si/Ti/Au substrates has been performed in percolated water-in-oil (w/o) microemulsions to define the nanoparticle size and composition.
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Affiliation(s)
- A. Serrà
- Ge-CPN
- Departament de Química Física and Institut de Nanociència i Nanotecnologia (IN2UB)
- Universitat de Barcelona
- Barcelona, Spain
| | - E. Gómez
- Ge-CPN
- Departament de Química Física and Institut de Nanociència i Nanotecnologia (IN2UB)
- Universitat de Barcelona
- Barcelona, Spain
| | - E. Vallés
- Ge-CPN
- Departament de Química Física and Institut de Nanociència i Nanotecnologia (IN2UB)
- Universitat de Barcelona
- Barcelona, Spain
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