1
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Song Y, Gómez-Recio I, Ghoridi A, Igoa Saldaña F, Janisch D, Sassoye C, Dupuis V, Hrabovsky D, Ruiz-González ML, González-Calbet JM, Casale S, Zitolo A, Lassalle-Kaiser B, Laberty-Robert C, Portehault D. Heterostructured Cobalt Silicide Nanocrystals: Synthesis in Molten Salts, Ferromagnetism, and Electrocatalysis. J Am Chem Soc 2023; 145:19207-19217. [PMID: 37615605 DOI: 10.1021/jacs.3c01110] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/25/2023]
Abstract
Nanoscale heterostructures of covalent intermetallics should give birth to a wide range of interface-driven physical and chemical properties. Such a level of design however remains unattainable for most of these compounds, due to the difficulty to reach a crystalline order of covalent bonds at the moderate temperatures required for colloidal chemistry. Herein, we design heterostructured cobalt silicide nanoparticles to trigger magnetic and catalytic properties in silicon-based materials. Our strategy consists in controlling the diffusion of cobalt atoms into silicon nanoparticles, by reacting these particles in molten salts. By adjusting the temperature, we tune the conversion of the initial silicon particles toward homogeneous CoSi nanoparticles and core-shell nanoparticles made of a CoSi shell and a silicon-rich core. The increased interface-to-volume ratio of the CoSi component in the core-shell particles yields distinct properties compared to the bulk and homogeneous nanoparticles. First, the core-shell particles exhibit increased ferromagnetism, despite the bulk diamagnetic properties of cobalt monosilicide. Second, the core-shell nanoparticles act as efficient precatalysts for alkaline water oxidation, where the nanostructure is converted in situ into a layered cobalt silicon oxide/(oxy)hydroxide with high and stable oxygen evolution reaction (OER) electrocatalytic activity. This work demonstrates a route to design heterostructured nanocrystals of covalent intermetallic compounds and shows that these new structures exhibit very rich, yet poorly explored, interface-based physical properties and reactivity.
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Affiliation(s)
- Yang Song
- Sorbonne Université, CNRS, Laboratoire de Chimie de la Matière Condensée de Paris (CMCP), 4 place Jussieu, F-75005 Paris, France
| | - Isabel Gómez-Recio
- Sorbonne Université, CNRS, Laboratoire de Chimie de la Matière Condensée de Paris (CMCP), 4 place Jussieu, F-75005 Paris, France
| | - Anissa Ghoridi
- Sorbonne Université, CNRS, Laboratoire de Chimie de la Matière Condensée de Paris (CMCP), 4 place Jussieu, F-75005 Paris, France
| | - Fernando Igoa Saldaña
- Sorbonne Université, CNRS, Laboratoire de Chimie de la Matière Condensée de Paris (CMCP), 4 place Jussieu, F-75005 Paris, France
| | - Daniel Janisch
- Sorbonne Université, CNRS, Laboratoire de Chimie de la Matière Condensée de Paris (CMCP), 4 place Jussieu, F-75005 Paris, France
| | - Capucine Sassoye
- Sorbonne Université, CNRS, Laboratoire de Chimie de la Matière Condensée de Paris (CMCP), 4 place Jussieu, F-75005 Paris, France
| | - Vincent Dupuis
- Sorbonne Université, CNRS, Laboratoire de Physicochimie des Electrolytes et Nanosystèmes Interfaciaux (PHENIX), 4 place Jussieu, F-75005 Paris, France
| | - David Hrabovsky
- Sorbonne Université, CNRS, Institut de Minéralogie de Physique des Matériaux et de Cosmochimie (IMPMC), 4 place Jussieu, F-75005 Paris, France
| | - M Luisa Ruiz-González
- Dpto. de Química Inorgánica I, Facultad de Ciencias Químicas, Universidad Complutense, 28040 Madrid, Spain
| | - José M González-Calbet
- Dpto. de Química Inorgánica I, Facultad de Ciencias Químicas, Universidad Complutense, 28040 Madrid, Spain
| | - Sandra Casale
- Sorbonne Université, CNRS, Laboratoire de Réactivité de Surface (LRS), 4 place Jussieu, F-75005 Paris, France
| | - Andrea Zitolo
- Synchrotron SOLEIL, L'Orme des Merisiers, Départementale 128, 91190 Saint-Aubin, France
| | | | - Christel Laberty-Robert
- Sorbonne Université, CNRS, Laboratoire de Chimie de la Matière Condensée de Paris (CMCP), 4 place Jussieu, F-75005 Paris, France
| | - David Portehault
- Sorbonne Université, CNRS, Laboratoire de Chimie de la Matière Condensée de Paris (CMCP), 4 place Jussieu, F-75005 Paris, France
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2
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Duncan EM, Ridouard A, Fayon F, Veron E, Genevois C, Allix M, Collins CM, Pitcher MJ. A computationally-guided non-equilibrium synthesis approach to materials discovery in the SrO-Al 2O 3-SiO 2 phase field. Chem Commun (Camb) 2023; 59:10544-10547. [PMID: 37566387 DOI: 10.1039/d3cc03120a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/12/2023]
Abstract
Glass-crystallisation synthesis is coupled to probe structure prediction for the guided discovery of new metastable oxides in the SrO-Al2O3-SiO2 phase field, yielding a new ternary ribbon-silicate, Sr2Si3O8. In principle, this methodology can be applied to a wide range of oxide chemistries by selecting an appropriate non-equilibrium synthesis route.
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Affiliation(s)
- Euan M Duncan
- CEMHTI, CNRS UPR3079, 1d Ave. de la Recherche Scientifique, Orléans 45071, France.
| | - Amandine Ridouard
- CEMHTI, CNRS UPR3079, 1d Ave. de la Recherche Scientifique, Orléans 45071, France.
| | - Franck Fayon
- CEMHTI, CNRS UPR3079, 1d Ave. de la Recherche Scientifique, Orléans 45071, France.
| | - Emmanuel Veron
- CEMHTI, CNRS UPR3079, 1d Ave. de la Recherche Scientifique, Orléans 45071, France.
| | - Cécile Genevois
- CEMHTI, CNRS UPR3079, 1d Ave. de la Recherche Scientifique, Orléans 45071, France.
| | - Mathieu Allix
- CEMHTI, CNRS UPR3079, 1d Ave. de la Recherche Scientifique, Orléans 45071, France.
| | - Christopher M Collins
- Department of Chemistry, Materials Innovation Factory, University of Liverpool, Liverpool L7 3NY, UK.
| | - Michael J Pitcher
- CEMHTI, CNRS UPR3079, 1d Ave. de la Recherche Scientifique, Orléans 45071, France.
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3
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Establishing Fe-Cu interaction in a novel free-standing material to boost the catalytic activity for ligand-free Suzuki-Miyaura cross-couplings. J Catal 2022. [DOI: 10.1016/j.jcat.2022.10.027] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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4
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Portehault D, Gómez-Recio I, Baron MA, Musumeci V, Aymonier C, Rouchon V, Le Godec Y. Geoinspired syntheses of materials and nanomaterials. Chem Soc Rev 2022; 51:4828-4866. [PMID: 35603716 DOI: 10.1039/d0cs01283a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The search for new materials is intimately linked to the development of synthesis methods. In the current urge for the sustainable synthesis of materials, taking inspiration from Nature's ways to process matter appears as a virtuous approach. In this review, we address the concept of geoinspiration for the design of new materials and the exploration of new synthesis pathways. In geoinspiration, materials scientists take inspiration from the key features of various geological systems and processes occurring in nature, to trigger the formation of artificial materials and nanomaterials. We discuss several case studies of materials and nanomaterials to highlight the basic geoinspiration concepts underlying some synthesis methods: syntheses in water and supercritical water, thermal shock syntheses, molten salt synthesis and high pressure synthesis. We show that the materials emerging from geoinspiration exhibit properties differing from materials obtained by other pathways, thus demonstrating that the field opens up avenues to new families of materials and nanomaterials. This review focuses on synthesis methodologies, by drawing connections between geosciences and materials chemistry, nanosciences, green chemistry, and environmental sciences.
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Affiliation(s)
- David Portehault
- Sorbonne Université, CNRS, Laboratoire Chimie de la Matière Condensée de Paris (CMCP), 4 place Jussieu, 75005 Paris, France.
| | - Isabel Gómez-Recio
- Sorbonne Université, CNRS, Laboratoire Chimie de la Matière Condensée de Paris (CMCP), 4 place Jussieu, 75005 Paris, France.
| | - Marzena A Baron
- Sorbonne Université, CNRS, Laboratoire Chimie de la Matière Condensée de Paris (CMCP), 4 place Jussieu, 75005 Paris, France.
| | - Valentina Musumeci
- Univ. Bordeaux, CNRS, Bordeaux INP, ICMCB, UMR 5026, F-33600 Pessac, France
| | - Cyril Aymonier
- Univ. Bordeaux, CNRS, Bordeaux INP, ICMCB, UMR 5026, F-33600 Pessac, France
| | - Virgile Rouchon
- IFP Energies nouvelles (IFPEN), Rond point de l'échangeur de Solaize - BP 3, 69360 Solaize, France
| | - Yann Le Godec
- Sorbonne Université, CNRS, MNHN, IRD, Institut de Minéralogie, de Physique des Matériaux et de Cosmochimie (IMPMC), 4 place Jussieu, F-75005, Paris, France
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5
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Rayssi C, Jebli M, Dhahri J, Henda MB, Alotaibi N, Alshahrani T, Belmabrouk H, Bchetnia A, Bouazizi ML. Experimental-structural study, Raman spectroscopy, UV‐visible, and impedance characterizations of Ba0.97La0.02Ti0.9Nb0.08O3 polycrystalline sample. J Mol Struct 2022. [DOI: 10.1016/j.molstruc.2021.131539] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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6
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Tran XQ, Aso K, Yamamoto T, Yang W, Kono Y, Kusada K, Wu D, Kitagawa H, Matsumura S. Quantitative Characterization of the Thermally Driven Alloying State in Ternary Ir-Pd-Ru Nanoparticles. ACS NANO 2022; 16:1612-1624. [PMID: 34962778 DOI: 10.1021/acsnano.1c10414] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Compositional and structural arrangements of constituent elements, especially those at the surface and near-surface layers, are known to greatly influence the catalytic performance of alloyed nanoparticles (NPs). Although much research effort often focuses on the ability to tailor these important aspects in the design stage, their stability under realistic operating conditions remains a major technical challenge. Here, the compositional stability and associated structural evolution of a ternary iridium-palladium-ruthenium (Ir-Pd-Ru) nanoalloy at elevated temperatures have been studied using interrupted in situ scanning transmission electron microscopy and theoretical modeling. The results are based on a combinatory approach of statistical sampling at the sub-nanometer scale for large groups of NPs as well as tracking individual NPs. We find that the solid solution Ir-Pd-Ru NPs (∼5.6 nm) evolved into a Pd-enriched shell supported on an alloyed Ir-Ru-rich core, most notably when the temperature exceeds 500 °C, concurrently with the development of expansive atomic strain in the outer surface and subsurface layers with respect to the core regions. Theoretically, we identify the weak interatomic bonds, low surface energy, and large atomic sizes associated with Pd as the key factors responsible for such observed features.
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Affiliation(s)
- Xuan Quy Tran
- Department of Applied Quantum Physics and Nuclear Engineering, Kyushu University, Motooka 744, Nishi-ku, Fukuoka 819-0395, Japan
| | - Kohei Aso
- Department of Applied Quantum Physics and Nuclear Engineering, Kyushu University, Motooka 744, Nishi-ku, Fukuoka 819-0395, Japan
- School of Materials Science, Japan Advanced Institute of Science and Technology, 1-1 Asahidai, Nomi, Ishikawa 923-1292, Japan
| | - Tomokazu Yamamoto
- Department of Applied Quantum Physics and Nuclear Engineering, Kyushu University, Motooka 744, Nishi-ku, Fukuoka 819-0395, Japan
- The Ultramicroscopy Research Center, Kyushu University, Motooka 744, Nishi-ku, Fukuoka 819-0395, Japan
| | - Wenhui Yang
- Department of Applied Quantum Physics and Nuclear Engineering, Kyushu University, Motooka 744, Nishi-ku, Fukuoka 819-0395, Japan
| | - Yoshiki Kono
- Department of Applied Quantum Physics and Nuclear Engineering, Kyushu University, Motooka 744, Nishi-ku, Fukuoka 819-0395, Japan
| | - Kohei Kusada
- Department of Chemistry, Kyoto University, Kitashirakawa-Oiwakecho, Sakyo-ku, Kyoto 606-8502, Japan
| | - Dongshuang Wu
- Department of Chemistry, Kyoto University, Kitashirakawa-Oiwakecho, Sakyo-ku, Kyoto 606-8502, Japan
| | - Hiroshi Kitagawa
- Department of Chemistry, Kyoto University, Kitashirakawa-Oiwakecho, Sakyo-ku, Kyoto 606-8502, Japan
| | - Syo Matsumura
- Department of Applied Quantum Physics and Nuclear Engineering, Kyushu University, Motooka 744, Nishi-ku, Fukuoka 819-0395, Japan
- The Ultramicroscopy Research Center, Kyushu University, Motooka 744, Nishi-ku, Fukuoka 819-0395, Japan
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7
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Diffuse Phase Transition and Dielectric Tunability of Ba0.97La0.02TiO3 Relaxor Ferroelectric Ceramic. J Inorg Organomet Polym Mater 2022. [DOI: 10.1007/s10904-021-02189-6] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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8
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Ma B, Gómez-Recio I, Mazerolles L, Mazeran PE, Sanchez C, Delalande S, Portehault D. Ultrasound-Assisted Liquid-Phase Synthesis and Mechanical Properties of Aluminum Matrix Nanocomposites Incorporating Boride Nanocrystals. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2022; 18:e2104091. [PMID: 34766719 DOI: 10.1002/smll.202104091] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/13/2021] [Revised: 09/16/2021] [Indexed: 06/13/2023]
Abstract
Incorporating boride nanocrystals could significantly impact the mechanical properties of aluminum alloys. Molten salts synthesis offers opportunities to fabricate superhard boride nanoparticles, which can sustain the harsh conditions during the liquid-phase design of metallic nanocomposites. Here hafnium diboride-aluminum nanocomposites are unveiled from molten salt-derived HfB2 nanoparticles sequentially dispersed in aluminum by ultrasound treatment. The structure and size of the nanocrystals are retained in the final nanocomposites, supporting their high chemical stability. Semicoherent interfaces between the nanoparticles and the matrix are then evidenced by TEM, suggesting that the nanocrystals could promote heterogeneous nucleation of Al and then limit the Al grain size to ≈20 µm. Nanoindentation measurements reveal significant grain boundary strengthening and grain refinement effects. It is finally shown that HfB2 nanoparticles also enable a decrease in matrix grain size and an increase in the hardness of the AlSi7 Cu0.5 Mg0.3 alloy. These proof-of-concept materials are paving the way to light-weight Al matrix nanocomposites doped by molten-salt synthesized nanoparticles.
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Affiliation(s)
- Binghua Ma
- Sorbonne Université, CNRS, Collège de France, Laboratoire de Chimie de la Matière Condensée de Paris (LCMCP), 4 place Jussieu, Paris, F-75005, France
- Stellantis, Centre Technique de Vélizy, route de Gisy, Vélizy-Villacoublay, 78140, France
| | - Isabel Gómez-Recio
- Sorbonne Université, CNRS, Collège de France, Laboratoire de Chimie de la Matière Condensée de Paris (LCMCP), 4 place Jussieu, Paris, F-75005, France
| | - Léo Mazerolles
- Institut de Chimie et des Matériaux Paris-Est, UMR 7182 CNRS-Université Paris Est, 2-8 rue H. Dunant, Thiais, 94320, France
| | - Pierre-Emmanuel Mazeran
- Alliance Sorbonne Université, Université de Technologie de Compiègne, Laboratoire Roberval de Mécanique, FRE UTC-CNRS 2012, Compiègne, 60200, France
| | - Clément Sanchez
- Sorbonne Université, CNRS, Collège de France, Laboratoire de Chimie de la Matière Condensée de Paris (LCMCP), 4 place Jussieu, Paris, F-75005, France
| | - Stéphane Delalande
- Stellantis, Centre Technique de Vélizy, route de Gisy, Vélizy-Villacoublay, 78140, France
| | - David Portehault
- Sorbonne Université, CNRS, Collège de France, Laboratoire de Chimie de la Matière Condensée de Paris (LCMCP), 4 place Jussieu, Paris, F-75005, France
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9
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Delacroix S, Igoa F, Song Y, Le Godec Y, Coelho-Diogo C, Gervais C, Rousse G, Portehault D. Electron Precise Sodium Carbaboride Nanocrystals from Molten Salts: Single Sources to Boron Carbides. Inorg Chem 2021; 60:4252-4260. [PMID: 33480696 DOI: 10.1021/acs.inorgchem.0c03501] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Boron-rich solids exhibit specific crystal structures and unique properties, which are only very scarcely addressed in nanoparticles. In this work, we address the original inorganic structural chemistry and reactivity of boron-rich nanoparticles, by reporting the first occurrence of sodium carbaboride nanocrystals based on the NaB5C crystal structure. To design these sub-10 nm nano-objects, we use liquid-phase synthesis in molten salts at 900 °C. By combining a set of characterization tools including powder X-ray powder diffraction, transmission electron microscopy, solid-state nuclear magnetic resonance coupled to DFT modeling, and X-ray photoelectron spectroscopy, we demonstrate that these nanocrystals deviate from the ideal stoichiometry reported for the bulk compound. We suggest that the carbon and sodium contents compensate each other to ensure that the octahedral cluster-based framework is stabilized by fulfilling an electron counting rule. These nanocrystals encompass substituted octahedral covalent structural building units not reported in the related bulk compound. They then shed new light on the ability of nanoparticles to host wide solid solution ranges in covalent solids and then to yield new solids. We finally show that these nanocrystals are efficient single sources of boron and carbon to form a nanostructured boron carbide, thus paving the way to new nanostructured materials.
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Affiliation(s)
- Simon Delacroix
- Sorbonne Université, CNRS, Laboratoire de Chimie de la Matière Condensée de Paris (CMCP), 4 place Jussieu, F-75005, Paris, France.,Sorbonne Université, CNRS, MNHN, IRD, Institut de Minéralogie, de Physique des Matériaux et de Cosmochimie (IMPMC), 4 place Jussieu, F-75005, Paris, France
| | - Fernando Igoa
- Sorbonne Université, CNRS, Laboratoire de Chimie de la Matière Condensée de Paris (CMCP), 4 place Jussieu, F-75005, Paris, France.,Sorbonne Université, CNRS, MNHN, IRD, Institut de Minéralogie, de Physique des Matériaux et de Cosmochimie (IMPMC), 4 place Jussieu, F-75005, Paris, France
| | - Yang Song
- Sorbonne Université, CNRS, Laboratoire de Chimie de la Matière Condensée de Paris (CMCP), 4 place Jussieu, F-75005, Paris, France
| | - Yann Le Godec
- Sorbonne Université, CNRS, MNHN, IRD, Institut de Minéralogie, de Physique des Matériaux et de Cosmochimie (IMPMC), 4 place Jussieu, F-75005, Paris, France
| | - Cristina Coelho-Diogo
- Sorbonne Université, CNRS, Institut des Matériaux de Paris Centre (IMPC), 4 place Jussieu, F-75005, Paris, France
| | - Christel Gervais
- Sorbonne Université, CNRS, Laboratoire de Chimie de la Matière Condensée de Paris (CMCP), 4 place Jussieu, F-75005, Paris, France
| | - Gwenaelle Rousse
- Collège de France, Sorbonne Université, Chimie du Solide et de l'Energie (CSE), 75231, Paris Cedex 05, France
| | - David Portehault
- Sorbonne Université, CNRS, Laboratoire de Chimie de la Matière Condensée de Paris (CMCP), 4 place Jussieu, F-75005, Paris, France
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10
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Gouget G, Pellerin M, Al Rahal Al Orabi R, Pautrot-D'Alençon L, Le Mercier T, Murray CB. Rare-Earth Sulfide Nanocrystals from Wet Colloidal Synthesis: Tunable Compositions, Size-Dependent Light Absorption, and Sensitized Rare-Earth Luminescence. J Am Chem Soc 2021; 143:3300-3305. [PMID: 33651594 DOI: 10.1021/jacs.0c13433] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
We report the synthesis of colloidal EuS, La2S3, and LaS2 nanocrystals between 150 and 255 °C using rare-earth iodides in oleylamine. The sulfur source dictates phase selection between La2S3 and LaS2, which are stabilized for the first time as colloidal nanocrystals. The indirect bandgap absorption of LaS2 shifts from 635 nm for nanoellipsoids to 365 nm for square-based nanoplates. Er3+ photoluminescence in La2S3:Er3+ (10%) is sensitized by the semiconducting host in the 390-450 nm range. The synthetic route yields tunable compositions of rare-earth sulfide nanocrystals. Interaction of light with these novel semiconducting nanostructures hosting rare-earth emitters should be attractive for applications that require broadband sensitization of RE emitters.
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Affiliation(s)
- Guillaume Gouget
- Department of Chemistry, University of Pennsylvania, Philadelphia, Pennsylvania 19104, United States
| | - Morgane Pellerin
- Research and Innovation Center Paris, Solvay, F-93308 Aubervilliers, France
| | - Rabih Al Rahal Al Orabi
- Design and Development of Functional Materials Department, Solvay, Axel'One, 87 avenue des Frères Perret, 69192 Cedex Saint Fons, France
| | | | - Thierry Le Mercier
- Research and Innovation Center Paris, Solvay, F-93308 Aubervilliers, France
| | - Christopher B Murray
- Department of Chemistry, University of Pennsylvania, Philadelphia, Pennsylvania 19104, United States
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11
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Yamaguchi Y, Aono R, Hayashi E, Kamata K, Hara M. Template-Free Synthesis of Mesoporous β-MnO 2 Nanoparticles: Structure, Formation Mechanism, and Catalytic Properties. ACS APPLIED MATERIALS & INTERFACES 2020; 12:36004-36013. [PMID: 32805787 DOI: 10.1021/acsami.0c08043] [Citation(s) in RCA: 24] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Mesoporous β-MnO2 nanoparticles were synthesized by a template-free low-temperature crystallization of Mn4+ precursors (low-crystallinity layer-type Mn4+ oxide, c-distorted H+-birnessite) produced by the reaction of MnO4- and Mn2+. The Mn starting materials, pH of the reaction solution, and calcination temperatures significantly affect the crystal structure, surface area, porous structure, and morphology of the manganese oxides formed. The pH conditions during the precipitation of Mn4+ precursors are important for controlling the morphology and porous structure of β-MnO2. Nonrigid aggregates of platelike particles with slitlike pores (β-MnO2-1 and -2) were obtained from the combinations of NaMnO4/MnSO4 and NaMnO4/Mn(NO3)2, respectively. On the other hand, spherelike particles with ink-bottle shaped pores (β-MnO2-3) were formed in NaMnO4/Mn(OAc)2 with pH adjustment (pH 0.8). The specific surface areas for β-MnO2-1, -2, and -3 were much higher than those for nonporous β-MnO2 nanorods synthesized using a typical hydrothermal method (β-MnO2-HT). On the other hand, c-distorted H+-birnessite precursors with a high interlayer metal cation (Na+ and K+) content led to the formation of α-MnO2 with a 2 × 2 tunnel structure. These mesoporous β-MnO2 materials acted as effective heterogeneous catalysts for the aerobic oxidation of 5-hydroxymethylfurfural (HMF) to 2,5-furandicarboxylic acid (FDCA) as a bioplastic monomer and for the transformation of aromatic alcohols to the corresponding aldehydes, where the catalytic activities of β-MnO2-1, -2, and -3 were approximately 1 order of magnitude higher than that of β-MnO2-HT. β-MnO2-3 exhibited higher catalytic activity (especially for larger molecules) than the other β-MnO2 materials, and this is likely attributed to the nanometer-sized spaces.
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Affiliation(s)
- Yui Yamaguchi
- Laboratory for Materials and Structures, Institute of Innovative Research, Tokyo Institute of Technology, Nagatsuta-cho 4259, Midori-ku, Yokohama, Kanagawa 226-8503, Japan
| | - Ryusei Aono
- Laboratory for Materials and Structures, Institute of Innovative Research, Tokyo Institute of Technology, Nagatsuta-cho 4259, Midori-ku, Yokohama, Kanagawa 226-8503, Japan
| | - Eri Hayashi
- Laboratory for Materials and Structures, Institute of Innovative Research, Tokyo Institute of Technology, Nagatsuta-cho 4259, Midori-ku, Yokohama, Kanagawa 226-8503, Japan
| | - Keigo Kamata
- Laboratory for Materials and Structures, Institute of Innovative Research, Tokyo Institute of Technology, Nagatsuta-cho 4259, Midori-ku, Yokohama, Kanagawa 226-8503, Japan
| | - Michikazu Hara
- Laboratory for Materials and Structures, Institute of Innovative Research, Tokyo Institute of Technology, Nagatsuta-cho 4259, Midori-ku, Yokohama, Kanagawa 226-8503, Japan
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12
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Liu YC, Yeh CH, Lo YF, Nachimuthu S, Lin SD, Jiang JC. In situ spectroscopic and theoretical investigation of methane activation on IrO2 nanoparticles: Role of Ir oxidation state on C-H activation. J Catal 2020. [DOI: 10.1016/j.jcat.2020.03.018] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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13
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Zhang L, Mao H, Liu Q, Gani R. Chemical product design – recent advances and perspectives. Curr Opin Chem Eng 2020. [DOI: 10.1016/j.coche.2019.10.005] [Citation(s) in RCA: 41] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
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14
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Martina K, Serpe L, Cavalli R, Cravotto G. Enabling technologies for the preparation of multifunctional “bullets” for nanomedicine. BULLETIN OF RUSSIAN STATE MEDICAL UNIVERSITY 2019. [DOI: 10.24075/brsmu.2018.082] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Recent advances in nanotechnology, including modern enabling techniques that can improve synthetic preparation and drug formulations, have opened up new frontiers in nanomedicine with the development of nanoscale carriers and assemblies. The use of delivery platforms has attracted attention over the past decade as researchers shift their focus away from the development of new drug candidates, and toward new means with which to deliver therapeutic and/or diagnostic agents. This work will explore a transdisciplinary approach for the production of a number of nanomaterials, nanocomplexes and nanobubbles and their application in a variety of potential biological and theranostic protocols. Particular attention will be paid to nanobubbles, stimuli responsive nanoparticles and cyclodextrin grafted nanosystems produced under non-conventional conditions, such as microwave and ultrasound irradiation. Besides nanoparticles preparation, ultrasound can also act as an enabling technology when activating sensitive nanobubbles and nanoparticles.
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Affiliation(s)
- K. Martina
- Department of Drug Science & Technology, Centre for Nanostructured Interfaces and Surfaces (NIS), University of Turin, Turin, Italy
| | - L. Serpe
- Department of Drug Science & Technology, Centre for Nanostructured Interfaces and Surfaces (NIS), University of Turin, Turin, Italy
| | - R. Cavalli
- Department of Drug Science & Technology, Centre for Nanostructured Interfaces and Surfaces (NIS), University of Turin, Turin, Italy
| | - G. Cravotto
- Department of Drug Science & Technology, Centre for Nanostructured Interfaces and Surfaces (NIS), University of Turin, Turin, Italy
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Ortiz-Quiñonez JL, Pal U, Villanueva MS. Structural, Magnetic, and Catalytic Evaluation of Spinel Co, Ni, and Co-Ni Ferrite Nanoparticles Fabricated by Low-Temperature Solution Combustion Process. ACS OMEGA 2018; 3:14986-15001. [PMID: 31458165 PMCID: PMC6644305 DOI: 10.1021/acsomega.8b02229] [Citation(s) in RCA: 64] [Impact Index Per Article: 10.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/30/2018] [Accepted: 10/25/2018] [Indexed: 05/24/2023]
Abstract
Here, we present the low-temperature (∼600 °C) solution combustion method for the fabrication of CoFe2O4, NiFe2O4, and Co0.5Ni0.5Fe2O4 nanoparticles (NPs) of 12-64 nm range in pure cubic spinel structure, by adjusting the oxidant (nitrate ions)/reductant (glycine) ratio in the reaction mixture. Although nitrate ions/glycine (N/G) ratios of 3 and 6 were used for the synthesis, phase-pure NPs could be obtained only for the N/G ratio of 6. For the N/G ratio 3, certain amount of Ni2+ cations was reduced to metallic nickel. The NH3 gas generated during the thermal decomposition of the amino acid (glycine, H2NCH2COOH) induced the reduction reaction. X-ray diffraction (XRD), Raman spectroscopy, vibrating sample magnetometry, and X-ray photoelectron spectroscopy techniques were utilized to characterize the synthesized materials. XRD analyses of the samples indicate that the Co0.5Ni0.5Fe2O4 NPs have lattice parameter larger than that of NiFe2O4, but smaller than that of CoFe2O4 NPs. Although the saturation magnetization (M s) of Co0.5Ni0.5Fe2O4 NPs lies in between the saturation magnetization values of CoFe2O4 and NiFe2O4 NPs, high coercivity (H c, 875 Oe) of the NPs indicate their hard ferromagnetic behavior. Catalytic behavior of the fabricated spinel NPs revealed that the samples containing metallic Ni are active catalysts for the degradation of 4-nitrophenol in aqueous medium.
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Affiliation(s)
- Jose-Luis Ortiz-Quiñonez
- Facultad
de Ingeniería, Benemérita
Universidad Autónoma de Puebla, Apartado Postal J-39, CP 72570 Puebla, Mexico
| | - Umapada Pal
- Instituto
de Física, Benemérita Universidad
Autónoma de Puebla, Apartado Postal
J-48, 72570 Puebla, Pue., Mexico
| | - Martin Salazar Villanueva
- Facultad
de Ingeniería, Benemérita
Universidad Autónoma de Puebla, Apartado Postal J-39, CP 72570 Puebla, Mexico
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