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Invernizzi C, Tabacchi G, Seraglia R, Benedet M, Roverso M, Maccato C, Bogialli S, Barreca D, Fois E. On the Fragmentation of Ni(II) β-Diketonate-Diamine Complexes as Molecular Precursors for NiO Films: A Theoretical and Experimental Investigation. Molecules 2024; 29:642. [PMID: 38338386 PMCID: PMC10856068 DOI: 10.3390/molecules29030642] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2023] [Revised: 01/22/2024] [Accepted: 01/26/2024] [Indexed: 02/12/2024] Open
Abstract
NiO-based nanomaterials have attracted considerable interest for different applications, which have stimulated the implementation of various synthetic approaches aimed at modulating their chemico-physical properties. In this regard, their bottom-up preparation starting from suitable precursors plays an important role, although a molecular-level insight into their reactivity remains an open issue to be properly tackled. In the present study, we focused on the fragmentation of Ni(II) diketonate-diamine adducts, of interest as vapor-phase precursors for Ni(II) oxide systems, by combining electrospray ionization mass spectrometry (ESI-MS) with multiple collisional experiments (ESI-MSn) and theoretical calculations. The outcomes of this investigation revealed common features in the fragmentation pattern of the target compounds: (i) in the first fragmentation, the three complexes yield analogous base-peak cations by losing a negatively charged diketonate moiety; in these cations, Ni-O and Ni-N interactions are stronger and the Ni positive charge is lower than in the parent neutral complexes; (ii) the tendency of ligand electronic charge to migrate towards Ni further increases in the subsequent fragmentation, leading to the formation of a tetracoordinated Ni environment featuring an interesting cation-π intramolecular interaction.
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Affiliation(s)
- Cristiano Invernizzi
- Department of Science and High Technology, Insubria University and INSTM, 22100 Como, Italy
| | - Gloria Tabacchi
- Department of Science and High Technology, Insubria University and INSTM, 22100 Como, Italy
| | - Roberta Seraglia
- CNR-ICMATE and INSTM, Department of Chemical Sciences, Padova University, 35131 Padova, Italy
| | - Mattia Benedet
- CNR-ICMATE and INSTM, Department of Chemical Sciences, Padova University, 35131 Padova, Italy
- Department of Chemical Sciences, Padova University and INSTM, 35131 Padova, Italy
| | - Marco Roverso
- CNR-ICMATE and INSTM, Department of Chemical Sciences, Padova University, 35131 Padova, Italy
- Department of Chemical Sciences, Padova University and INSTM, 35131 Padova, Italy
| | - Chiara Maccato
- CNR-ICMATE and INSTM, Department of Chemical Sciences, Padova University, 35131 Padova, Italy
- Department of Chemical Sciences, Padova University and INSTM, 35131 Padova, Italy
| | - Sara Bogialli
- CNR-ICMATE and INSTM, Department of Chemical Sciences, Padova University, 35131 Padova, Italy
- Department of Chemical Sciences, Padova University and INSTM, 35131 Padova, Italy
| | - Davide Barreca
- CNR-ICMATE and INSTM, Department of Chemical Sciences, Padova University, 35131 Padova, Italy
| | - Ettore Fois
- Department of Science and High Technology, Insubria University and INSTM, 22100 Como, Italy
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2
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Segura Lecina O, Newton MA, Green PB, Albertini PP, Leemans J, Marshall KP, Stoian D, Loiudice A, Buonsanti R. Surface Chemistry Dictates the Enhancement of Luminescence and Stability of InP QDs upon c-ALD ZnO Hybrid Shell Growth. JACS AU 2023; 3:3066-3075. [PMID: 38034959 PMCID: PMC10685429 DOI: 10.1021/jacsau.3c00457] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 08/09/2023] [Revised: 10/18/2023] [Accepted: 10/18/2023] [Indexed: 12/02/2023]
Abstract
Indium phosphide quantum dots (InP QDs) are a promising example of Restriction of Hazardous Substances directive (RoHS)-compliant light-emitting materials. However, they suffer from low quantum yield and instability upon processing under ambient conditions. Colloidal atomic layer deposition (c-ALD) has been recently proposed as a methodology to grow hybrid materials including QDs and organic/inorganic oxide shells, which possess new functions compared to those of the as-synthesized QDs. Here, we demonstrate that ZnO shells can be grown on InP QDs obtained via two synthetic routes, which are the classical sylilphosphine-based route and the more recently developed aminophosphine-based one. We find that the ZnO shell increases the photoluminescence emission only in the case of aminophosphine-based InP QDs. We rationalize this result with the different chemistry involved in the nucleation step of the shell and the resulting surface defect passivation. Furthermore, we demonstrate that the ZnO shell prevents degradation of the InP QD suspension under ambient conditions by avoiding moisture-induced displacement of the ligands from their surface. Overall, this study proposes c-ALD as a methodology for the synthesis of alternative InP-based core@shell QDs and provides insight into the surface chemistry that results in both enhanced photoluminescence and stability required for application in optoelectronic devices and bioimaging.
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Affiliation(s)
- Ona Segura Lecina
- Laboratory
of Nanochemistry for Energy (LNCE), Institute of Chemical Sciences
and Engineering (ISIC), École Polytechnique
Fédérale de Lausanne, CH-1950 Sion, Switzerland
| | - Mark A. Newton
- Laboratory
of Nanochemistry for Energy (LNCE), Institute of Chemical Sciences
and Engineering (ISIC), École Polytechnique
Fédérale de Lausanne, CH-1950 Sion, Switzerland
| | - Philippe B. Green
- Laboratory
of Nanochemistry for Energy (LNCE), Institute of Chemical Sciences
and Engineering (ISIC), École Polytechnique
Fédérale de Lausanne, CH-1950 Sion, Switzerland
| | - Petru P. Albertini
- Laboratory
of Nanochemistry for Energy (LNCE), Institute of Chemical Sciences
and Engineering (ISIC), École Polytechnique
Fédérale de Lausanne, CH-1950 Sion, Switzerland
| | - Jari Leemans
- Laboratory
of Nanochemistry for Energy (LNCE), Institute of Chemical Sciences
and Engineering (ISIC), École Polytechnique
Fédérale de Lausanne, CH-1950 Sion, Switzerland
| | - Kenneth P. Marshall
- The
Swiss-Norwegian Beamlines, European Synchrotron
Radiation Facility (ESRF), 38000 Grenoble, France
| | - Dragos Stoian
- The
Swiss-Norwegian Beamlines, European Synchrotron
Radiation Facility (ESRF), 38000 Grenoble, France
| | - Anna Loiudice
- Laboratory
of Nanochemistry for Energy (LNCE), Institute of Chemical Sciences
and Engineering (ISIC), École Polytechnique
Fédérale de Lausanne, CH-1950 Sion, Switzerland
| | - Raffaella Buonsanti
- Laboratory
of Nanochemistry for Energy (LNCE), Institute of Chemical Sciences
and Engineering (ISIC), École Polytechnique
Fédérale de Lausanne, CH-1950 Sion, Switzerland
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3
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Riporto F, Dhouib A, Gheata A, Beauquis S, Molina E, Guené-Girard S, Galez C, Bornet A, Gautier-Luneau I, Gerber-Lemaire S, Monnier V, Le Dantec R, Mugnier Y. Nonclassical Nucleation and Crystallization of LiNbO 3 Nanoparticles from the Aqueous Solvothermal Alkoxide Route. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2023:e2306417. [PMID: 37968253 DOI: 10.1002/smll.202306417] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/28/2023] [Revised: 10/09/2023] [Indexed: 11/17/2023]
Abstract
The exact molecular reaction pathway and crystallization mechanisms of LiNbO3 nanoparticles under solvothermal conditions are derived through extensive time- and temperature-resolved experiments allowing to track all the transient molecular and solid species. Starting with a simple mixing of Li/Nb ethoxides, water addition is used to promote condensation after ligand exchange with different co-solvents including alcohols and glycols of variable carbon-chain length. A nonclassical nucleation scheme is first demonstrated after the identification of new octanuclear complexes with a {Li4 Nb4 O10 } core whose solvophobic interactions mediate their aggregation, thus, resulting in a colloidal gel at room-temperature. Upon heating, a more or less frustrated aggregation-mediated crystallization process is then evidenced leading to LiNbO3 nanocrystals of adjustable mean size between 20 and 100 nm. Such a fine control can be attributed to the variable Nb-OR (R = alkoxy/glycoxy ligand) binding interactions at the surface of crystalline intermediates. Demonstration of such a nonclassical nucleation process and crystallization mechanism for LiNbO3 not only sheds light on the entire growth process of multifunctional nanomaterials with non-perovskite crystalline structures, but also opens new avenues for the identification of novel bimetallic oxoclusters involved in the formation of several mixed oxides from the aqueous alkoxide route.
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Affiliation(s)
- Florian Riporto
- Université Savoie Mont Blanc, SYMME, Annecy, F-74000, France
| | - Ameni Dhouib
- Université Savoie Mont Blanc, SYMME, Annecy, F-74000, France
| | - Adrian Gheata
- Institute of Chemical Sciences and Engineering, Ecole Polytechnique Fédérale de Lausanne, Group for Functionalized Biomaterials, Lausanne, 1015, Switzerland
| | | | - Emilie Molina
- Université Savoie Mont Blanc, SYMME, Annecy, F-74000, France
| | - Simon Guené-Girard
- Université Grenoble Alpes, CNRS, Grenoble INP, Institut Néel, Grenoble, 38000, France
| | - Christine Galez
- Université Savoie Mont Blanc, SYMME, Annecy, F-74000, France
| | - Aurélien Bornet
- Institute of Chemical Sciences and Engineering, Ecole Polytechnique Fédérale de Lausanne, Nuclear Magnetic Resonance Platform, EPFL SB ISIC-NMRP, Batochime, Lausanne, 1015, Switzerland
| | | | - Sandrine Gerber-Lemaire
- Institute of Chemical Sciences and Engineering, Ecole Polytechnique Fédérale de Lausanne, Group for Functionalized Biomaterials, Lausanne, 1015, Switzerland
| | - Virginie Monnier
- Univ Lyon, Ecole Centrale de Lyon, CNRS, INSA Lyon, Université Claude Bernard Lyon 1, CPE Lyon, CNRS, INL, UMR5270, Ecully, 69130, France
| | - Ronan Le Dantec
- Université Savoie Mont Blanc, SYMME, Annecy, F-74000, France
| | - Yannick Mugnier
- Université Savoie Mont Blanc, SYMME, Annecy, F-74000, France
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4
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Guo L, Li F, Liu J, Li R, Yu Z, Xi Q, Zhang L, Li Y, Fan C. Cracked spindle morphology of MIL-101(Fe) for improved photocatalytic nitrogen reduction. J SOLID STATE CHEM 2022. [DOI: 10.1016/j.jssc.2022.123610] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/14/2022]
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5
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Mishra S. Ultra-mild synthesis of nanometric metal chalcogenides using organyl chalcogenide precursors. Chem Commun (Camb) 2022; 58:10136-10153. [PMID: 36004549 DOI: 10.1039/d2cc03458a] [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
Bis(trialkylsilyl) monochalcogenides and diorganyl dichalcogenides, (R3Si)2E and R2E2 (E = S, Se or Te and R = alkyl, aryl or allyl group), have emerged in the past decade as excellent reagents for the synthesis of metal chalcogenide nanoparticles (NPs) and clusters owing to their ability to transfer the chalcogenide anion (E2-) under ultra-mild conditions and versatility in reacting even with non-conventional metal reagents or being employed in a variety of synthetic methods. In comparison, the related non-silylated diorganyl monochalcogenides R2E have received attention only recently for the solution phase synthesis of metal chalcogenide NPs. In spite of sharing many similarities, these three families of organyl chalcogenides are different in their coordination ability and decomposition behavior, and therefore in reactivities towards metal reagents. This feature article provides a concise overview on the use of these three families as synthons for the ultralow-temperature synthesis of metal chalcogenide nanomaterials, deliberating their different decomposition mechanisms and critically assessing their advantages for certain applications. More specifically, it discusses their usefulness in (i) affording molecular precursors with different kinetic and thermal stabilities, (ii) isolating reactive intermediates for comprehending the mechanism of molecule-to-nanoparticle transformation and, therefore, achieving fine control over the synthesis, (iii) stabilizing isolable metastable or difficult-to-achieve phases, and (iv) yielding complex ternary nanoparticles with controlled stoichiometry or composites with sensitive materials without modifying the characteristics of the latter. Besides providing a perspective on the low-temperature synthesis of nanomaterials, this overview is expected to assist further progress, particularly in the field of R2E, leading to interesting materials including metastable ones for new applications.
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Affiliation(s)
- Shashank Mishra
- Université Claude Bernard Lyon 1, CNRS, UMR 5256, Institut de Recherches sur la Catalyse et l'Environnement de Lyon (IRCELYON), 2 Avenue Albert Einstein, 69626 Villeurbanne, France.
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6
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Karmakar G, Tyagi A, Shah AY, Nigam S, Wadawale AP, Kedarnath G, Vats BG, Naveen Kumar N, Singh V. Facile one pot synthesis of highly photoresponsive coinage metal selenides (Cu 1.8Se and Ag 2Se) achieved through novel Cu and Ag pyridylselenolates as molecular precursors. Dalton Trans 2022; 51:12670-12685. [PMID: 35938959 DOI: 10.1039/d2dt01897g] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
Copper selenide (Cu1.8Se) and silver selenide (Ag2Se) have garnered unprecedented attention as efficient absorber materials for cost-effective and sustainable solar cells. Phase pure preparation of these exotic materials in a nano-regime is highly desirable. This account outlines a simple and easily scalable pathway to Cu1.8Se and Ag2Se nanocrystals using novel complexes [Cu{2-SeC5H2(Me-4,6)2N}]4 (1), [Ag{2-SeC5H2(Me-4,6)2N}]6 (2) and [Ag{2-SeC5H3(Me-5)N}]6·2C6H5CH3 (3·2C6H5CH3) as single source molecular precursors (SSPs). Structural studies revealed that the Cu and Ag complexes crystallize into tetrameric and hexameric forms, respectively. This observed structural diversity in the complexes has been rationalized via DFT calculations and attributed to metal-metal bond endorsed energetics. The thermolysis at relatively lower temperature in oleylamine of complex 1 afforded cubic berzelianite Cu1.8Se and complexes 2 and 3 produced orthorhombic naumannite Ag2Se nanocrystals. The low temperature synthesis of these nanocrystals seems to be driven by the observed preformed Cu4Se4 and Ag6Se6 core in the complexes which have close resemblance with the bulk structure of the final materials (Cu1.8Se and Ag2Se). The crystal structure, phase purity, morphology, elemental composition and band gap of these nanocrystals were determined from pXRD, electron microscopy (SEM and TEM), EDS and DRS-UV, respectively. The band gap of these nanocrystals lies in the range suitable for solar cell applications. Finally, these nanocrystal-based prototype photo-electrochemical cells exhibit high photoresponsivity and stability under alternating light and dark conditions.
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Affiliation(s)
- Gourab Karmakar
- Chemistry Division, Bhabha Atomic Research Centre, Mumbai 400 085, India. .,Homi Bhabha National Institute, Anushaktinagar, Mumbai 400 094, India
| | - Adish Tyagi
- Chemistry Division, Bhabha Atomic Research Centre, Mumbai 400 085, India. .,Homi Bhabha National Institute, Anushaktinagar, Mumbai 400 094, India
| | - Alpa Y Shah
- Chemistry Division, Bhabha Atomic Research Centre, Mumbai 400 085, India.
| | - Sandeep Nigam
- Chemistry Division, Bhabha Atomic Research Centre, Mumbai 400 085, India. .,Homi Bhabha National Institute, Anushaktinagar, Mumbai 400 094, India
| | - A P Wadawale
- Chemistry Division, Bhabha Atomic Research Centre, Mumbai 400 085, India.
| | - G Kedarnath
- Chemistry Division, Bhabha Atomic Research Centre, Mumbai 400 085, India. .,Homi Bhabha National Institute, Anushaktinagar, Mumbai 400 094, India
| | - Bal Govind Vats
- Fuel Chemistry Division, Bhabha Atomic Research Centre, Mumbai 400 085, India.,Homi Bhabha National Institute, Anushaktinagar, Mumbai 400 094, India
| | - N Naveen Kumar
- Materials Science Division, Bhabha Atomic Research Centre, Mumbai 400 085, India
| | - Vishal Singh
- Materials Science Division, Bhabha Atomic Research Centre, Mumbai 400 085, India
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7
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Synthetic Routes to Crystalline Complex Metal Alkyl Carbonates and Hydroxycarbonates via Sol–Gel Chemistry—Perspectives for Advanced Materials in Catalysis. Catalysts 2022. [DOI: 10.3390/catal12050554] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
Metal alkoxides are easily available and versatile precursors for functional materials, such as solid catalysts. However, the poor solubility of metal alkoxides in organic solvents usually hinders their facile application in sol–gel processes and complicates access to complex carbonate or oxidic compounds after hydrolysis of the precursors. In our contribution we have therefore shown three different solubilization strategies for metal alkoxides, namely the derivatization, the hetero-metallization and CO2 insertion. The latter strategy leads to a stoichiometric insertion of CO2 into the metal–oxygen bond of the alkoxide and the subsequent formation of metal alkyl carbonates. These precursors can then be employed advantageously in sol–gel chemistry and, after controlled hydrolysis, result in chemically defined crystalline carbonates and hydroxycarbonates. Cu- and Zn-containing carbonates and hydroxycarbonates were used in an exemplary study for the synthesis of Cu/Zn-based bulk catalysts for methanol synthesis with a final comparable catalytic activity to commercial standard reference catalysts.
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8
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Luo S, Turcheniuk K, Chen L, Song AY, Hu W, Ren X, Sun Z, Ramprasad R, Yushin G. Synthesis of Mg Alkoxide Nanowires from Mg Alkoxide Nanoparticles upon Ligand Exchange. ACS APPLIED MATERIALS & INTERFACES 2022; 14:13820-13827. [PMID: 35286060 DOI: 10.1021/acsami.1c21757] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
We report on a new synthesis pathway for Mg n-propoxide nanowires (NWs) from Mg ethoxide nanoparticles using a simple alkoxy ligand exchange reaction followed by condensation polymerization in n-propanol. In order to uncover the morphology-structure correlation in the metal alkoxide family, we employed a powerful range of state-of-the-art characterization techniques. The morphology transformation from nanoparticles to nanowires was demonstrated by time-lapse SEM micrographs. Fourier transform infrared spectroscopy (FTIR) and nuclear magnetic resonance spectroscopy (such as 1H NMR and solid-state 13C cross-polarization (CP)-MAS NMR) illustrated the replacement of ethyl by n-propyl and metal alkoxide condensation polymerization. We identified chemical formulas of the products also using NMR spectroscopy. The crystal structure simulation of Mg ethoxide particles and Mg n-propoxide NWs provided insights on how the ligand exchange and the associated increase in the fraction of OH groups greatly enhanced Mg alkoxide bonding and enabled a higher degree of coordination polymerization to facilitate the formation and growth of the Mg n-propoxide NWs. The discovered synthesis method could be extended for the fabrication of other metal alkoxide (nano) structures with various morphologies.
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Affiliation(s)
- Shunrui Luo
- School of Metallurgy and Environment, Central South University, Changsha 410083, PR China
- School of Materials Science & Engineering, Georgia Institute of Technology, Atlanta, Georgia 30332, United States
| | - Kostiantyn Turcheniuk
- School of Materials Science & Engineering, Georgia Institute of Technology, Atlanta, Georgia 30332, United States
| | - Lihua Chen
- School of Materials Science & Engineering, Georgia Institute of Technology, Atlanta, Georgia 30332, United States
| | - Ah-Young Song
- School of Materials Science & Engineering, Georgia Institute of Technology, Atlanta, Georgia 30332, United States
| | - Wenqiang Hu
- School of Materials Science & Engineering, Georgia Institute of Technology, Atlanta, Georgia 30332, United States
| | - Xiaolei Ren
- School of Materials Science & Engineering, Georgia Institute of Technology, Atlanta, Georgia 30332, United States
- College of Environment and Resources, Chongqing Technology and Business University, Chongqing 400067, PR China
| | - Zifei Sun
- School of Chemistry and Biochemistry, Georgia Institute of Technology, Atlanta, Georgia 30332, United States
| | - Rampi Ramprasad
- School of Materials Science & Engineering, Georgia Institute of Technology, Atlanta, Georgia 30332, United States
| | - Gleb Yushin
- School of Materials Science & Engineering, Georgia Institute of Technology, Atlanta, Georgia 30332, United States
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9
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Kulikova ES, Chernyshova OV, Iordan DV, Mikheev IA, Drobot DV. Bimetallic Alkoxocomplexes of Rhenium, Cobalt, and Nickel as Precursors for Alloys Production. RUSS J ELECTROCHEM+ 2022. [DOI: 10.1134/s1023193522020057] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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10
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Segura Lecina O, Hope MA, Venkatesh A, Björgvinsdóttir S, Rossi K, Loiudice A, Emsley L, Buonsanti R. Colloidal-ALD-Grown Hybrid Shells Nucleate via a Ligand-Precursor Complex. J Am Chem Soc 2022; 144:3998-4008. [PMID: 35195415 DOI: 10.1021/jacs.1c12538] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Colloidal atomic layer deposition (c-ALD) enables the growth of hybrid organic-inorganic oxide shells with tunable thickness at the nanometer scale around ligand-functionalized inorganic nanoparticles (NPs). This recently developed method has demonstrated improved stability of NPs and of their dispersions, a key requirement for their application. Nevertheless, the mechanism by which the inorganic shells form is still unknown, as is the nature of multiple complex interfaces between the NPs, the organic ligands functionalizing the surface, and the shell. Here, we demonstrate that carboxylate ligands are the key element that enables the synthesis of these core-shell structures. Dynamic nuclear polarization surface-enhanced nuclear magnetic resonance spectroscopy (DNP SENS) in combination with density functional theory (DFT) structure calculations shows that the addition of the aluminum organometallic precursor forms a ligand-precursor complex that interacts with the NP surface. This ligand-precursor complex is the first step for the nucleation of the shell and enables its further growth.
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Affiliation(s)
- Ona Segura Lecina
- Laboratory of Nanochemistry for Energy, Institute of Chemical Sciences and Engineering, École Polytechnique Fédérale de Lausanne (EPFL), CH-1950 Sion, Switzerland
| | - Michael A Hope
- Laboratory of Magnetic Resonance, Institute of Chemical Sciences and Engineering, Ecole Polytechnique Fédérale de Lausanne (EPFL), CH-1015 Lausanne, Switzerland
| | - Amrit Venkatesh
- Laboratory of Magnetic Resonance, Institute of Chemical Sciences and Engineering, Ecole Polytechnique Fédérale de Lausanne (EPFL), CH-1015 Lausanne, Switzerland
| | - Snædís Björgvinsdóttir
- Laboratory of Magnetic Resonance, Institute of Chemical Sciences and Engineering, Ecole Polytechnique Fédérale de Lausanne (EPFL), CH-1015 Lausanne, Switzerland
| | - Kevin Rossi
- Laboratory of Nanochemistry for Energy, Institute of Chemical Sciences and Engineering, École Polytechnique Fédérale de Lausanne (EPFL), CH-1950 Sion, Switzerland
| | - Anna Loiudice
- Laboratory of Nanochemistry for Energy, Institute of Chemical Sciences and Engineering, École Polytechnique Fédérale de Lausanne (EPFL), CH-1950 Sion, Switzerland
| | - Lyndon Emsley
- Laboratory of Magnetic Resonance, Institute of Chemical Sciences and Engineering, Ecole Polytechnique Fédérale de Lausanne (EPFL), CH-1015 Lausanne, Switzerland
| | - Raffaella Buonsanti
- Laboratory of Nanochemistry for Energy, Institute of Chemical Sciences and Engineering, École Polytechnique Fédérale de Lausanne (EPFL), CH-1950 Sion, Switzerland
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11
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An anhydrous precursor approach to BaYF5-based upconverting nanocrystals. J INDIAN CHEM SOC 2022. [DOI: 10.1016/j.jics.2021.100322] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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12
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Brune V, Raydan N, Sutorius A, Hartl F, Purohit B, Gahlot S, Bargiela P, Burel L, Wilhelm M, Hegemann C, Atamtürk U, Mathur S, Mishra S. Single source precursor route to nanometric tin chalcogenides. Dalton Trans 2021; 50:17346-17360. [PMID: 34788778 DOI: 10.1039/d1dt02964a] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Low-temperature solution phase synthesis of nanomaterials using designed molecular precursors enjoys tremendous advantages over traditional high-temperature solid-state synthesis. These include atomic-level control over stoichiometry, homogeneous elemental dispersion and uniformly distributed nanoparticles. For exploiting these advantages, however, rationally designed molecular complexes having certain properties are usually required. We report here the synthesis and complete characterization of new molecular precursors containing direct Sn-E bonds (E = S or Se), which undergo facile decomposition under different conditions (solid/solution phase, thermal/microwave heating, single/mixed solvents, varying temperatures, etc.) to afford phase-pure or mixed-phase tin chalcogenide nanoflakes with defined ratios.
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Affiliation(s)
- Veronika Brune
- University of Cologne, Institute of Inorganic Chemisty, Greinstraße 6, 50939 Cologne, Germany.
| | - Nidal Raydan
- Université Lyon 1, IRCELYON, CNRS-UMR 5256, 2 Avenue A. Einstein, 69626 Villeurbanne, France.
| | - Anja Sutorius
- University of Cologne, Institute of Inorganic Chemisty, Greinstraße 6, 50939 Cologne, Germany.
| | - Fabian Hartl
- University of Cologne, Institute of Inorganic Chemisty, Greinstraße 6, 50939 Cologne, Germany.
| | - Bhagyesh Purohit
- Université Lyon 1, IRCELYON, CNRS-UMR 5256, 2 Avenue A. Einstein, 69626 Villeurbanne, France.
| | - Sweta Gahlot
- Université Lyon 1, IRCELYON, CNRS-UMR 5256, 2 Avenue A. Einstein, 69626 Villeurbanne, France.
| | - Pascal Bargiela
- Université Lyon 1, IRCELYON, CNRS-UMR 5256, 2 Avenue A. Einstein, 69626 Villeurbanne, France.
| | - Laurence Burel
- Université Lyon 1, IRCELYON, CNRS-UMR 5256, 2 Avenue A. Einstein, 69626 Villeurbanne, France.
| | - Michael Wilhelm
- University of Cologne, Institute of Inorganic Chemisty, Greinstraße 6, 50939 Cologne, Germany.
| | - Corinna Hegemann
- University of Cologne, Institute of Inorganic Chemisty, Greinstraße 6, 50939 Cologne, Germany.
| | - Ufuk Atamtürk
- University of Cologne, Institute of Inorganic Chemisty, Greinstraße 6, 50939 Cologne, Germany.
| | - Sanjay Mathur
- University of Cologne, Institute of Inorganic Chemisty, Greinstraße 6, 50939 Cologne, Germany.
| | - Shashank Mishra
- Université Lyon 1, IRCELYON, CNRS-UMR 5256, 2 Avenue A. Einstein, 69626 Villeurbanne, France.
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13
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Brune V, Grosch M, Weißing R, Hartl F, Frank M, Mishra S, Mathur S. Influence of the choice of precursors on the synthesis of two-dimensional transition metal dichalcogenides. Dalton Trans 2021; 50:12365-12385. [PMID: 34318836 DOI: 10.1039/d1dt01397a] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
The interest in transition metal dichalcogenides (TMDCs; MEy/2; M = transition metal; E = chalcogenide, y = valence of the metal) has grown exponentially across various science and engineering disciplines due to their unique structural chemistry manifested in a two-dimensional lattice that results in extraordinary electronic and transport properties desired for applications in sensors, energy storage and optoelectronic devices. Since the properties of TMDCs can be tailored by changing the stacking sequence of 2D monolayers with similar or dis-similar materials, a number of synthetic routes essentially based on the disintegration of bulk (e.g., chemical exfoliation) or the integration of atomic constituents (e.g., vapor phase growth) have been explored. Despite a large body of data available on the chemical synthesis of TMDCs, experimental strategies with high repeatability of control over film thickness, phase and compositional purity remain elusive, which calls for innovative synthetic concepts offering, for instance, self-limited growth in the z-direction and homogeneous lateral topography. This review summarizes the recent conceptual advancements in the growth of layered van der Waals TMDCs from both mixtures of metal and chalcogen sources (multi-source precursors; MSPs) and from molecular compounds containing metals and chalcogens in one starting material (single-source precursor; SSPs). The critical evaluation of the strengths, limitations and opportunities of MSP and SSP approaches is provided as a guideline for the fabrication of TMDCs from commercial and customized molecular precursors. For example, alternative synthetic pathways using tailored molecular precursors circumvent the challenges of differential nucleation and crystal growth kinetics that are invariably associated with conventional gas phase chemical vapor transport (CVT) and chemical vapor deposition (CVD) of a mixture of components. The aspects of achieving high compositional purity and alternatives to minimize competing reactions or side products are discussed in the context of efficient chemical synthesis of TMDCs. Moreover, a critical analysis of the potential opportunities and existing bottlenecks in the synthesis of TMDCs and their intrinsic properties is provided.
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Affiliation(s)
- Veronika Brune
- Institute of Inorganic Chemistry, University of Cologne, Greinstraße 6, D-50939 Cologne, Germany.
| | - Matthias Grosch
- Institute of Inorganic Chemistry, University of Cologne, Greinstraße 6, D-50939 Cologne, Germany.
| | - René Weißing
- Institute of Inorganic Chemistry, University of Cologne, Greinstraße 6, D-50939 Cologne, Germany.
| | - Fabian Hartl
- Institute of Inorganic Chemistry, University of Cologne, Greinstraße 6, D-50939 Cologne, Germany.
| | - Michael Frank
- Institute of Inorganic Chemistry, University of Cologne, Greinstraße 6, D-50939 Cologne, Germany.
| | - Shashank Mishra
- Université Claude Bernard Lyon 1, CNRS, UMR 5256, IRCELYON, 2 avenue Albert Einstein, 69626 Villeurbanne, France.
| | - Sanjay Mathur
- Institute of Inorganic Chemistry, University of Cologne, Greinstraße 6, D-50939 Cologne, Germany.
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Gahlot S, Purohit B, Jeanneau E, Mishra S. Coinage Metal Complexes with Di‐tertiary‐butyl Sulfide as Precursors with Ultra‐Low Decomposition Temperature. Chemistry 2021; 27:10826-10832. [DOI: 10.1002/chem.202101471] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2021] [Indexed: 02/06/2023]
Affiliation(s)
- Sweta Gahlot
- Université Lyon 1 CNRS UMR 5256 IRCELYON Institut de recherches sur la catalyse et l'environnement de Lyon 2 avenue Albert Einstein 69626 Villeurbanne France
| | - Bhagyesh Purohit
- Université Lyon 1 CNRS UMR 5256 IRCELYON Institut de recherches sur la catalyse et l'environnement de Lyon 2 avenue Albert Einstein 69626 Villeurbanne France
| | - Erwann Jeanneau
- Université Lyon 1 Centre de Diffractométrie Henri Longchambon 5 rue de La Doua 69100 Villeurbanne France
| | - Shashank Mishra
- Université Lyon 1 CNRS UMR 5256 IRCELYON Institut de recherches sur la catalyse et l'environnement de Lyon 2 avenue Albert Einstein 69626 Villeurbanne France
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15
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Nahrstedt V, Raauf A, Hegemann C, Brune V, Schläfer J, Mathur S. Unusual Reactivity of Silicon Grease Towards Metal Alkoxides: Serendipity for Structural Chemistry. Z Anorg Allg Chem 2021. [DOI: 10.1002/zaac.202000474] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Vanessa Nahrstedt
- Institute of Inorganic Chemistry University of Cologne Greinstrasse 6 D-50939 Cologne Germany
| | - Aida Raauf
- Institute of Inorganic Chemistry University of Cologne Greinstrasse 6 D-50939 Cologne Germany
| | - Corinna Hegemann
- Institute of Inorganic Chemistry University of Cologne Greinstrasse 6 D-50939 Cologne Germany
| | - Veronika Brune
- Institute of Inorganic Chemistry University of Cologne Greinstrasse 6 D-50939 Cologne Germany
| | - Johannes Schläfer
- Institute of Inorganic Chemistry University of Cologne Greinstrasse 6 D-50939 Cologne Germany
| | - Sanjay Mathur
- Institute of Inorganic Chemistry University of Cologne Greinstrasse 6 D-50939 Cologne Germany
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16
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Barreca D, Fois E, Gasparotto A, Maccato C, Oriani M, Tabacchi G. The Early Steps of Molecule-to-Material Conversion in Chemical Vapor Deposition (CVD): A Case Study. Molecules 2021; 26:molecules26071988. [PMID: 33916041 PMCID: PMC8037710 DOI: 10.3390/molecules26071988] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2021] [Revised: 03/27/2021] [Accepted: 03/29/2021] [Indexed: 02/06/2023] Open
Abstract
Transition metal complexes with β-diketonate and diamine ligands are valuable precursors for chemical vapor deposition (CVD) of metal oxide nanomaterials, but the metal-ligand bond dissociation mechanism on the growth surface is not yet clarified in detail. We address this question by density functional theory (DFT) and ab initio molecular dynamics (AIMD) in combination with the Blue Moon (BM) statistical sampling approach. AIMD simulations of the Zn β-diketonate-diamine complex Zn(hfa)2TMEDA (hfa = 1,1,1,5,5,5-hexafluoro-2,4-pentanedionate; TMEDA = N,N,N′,N′-tetramethylethylenediamine), an amenable precursor for the CVD of ZnO nanosystems, show that rolling diffusion of this precursor at 500 K on a hydroxylated silica slab leads to an octahedral-to-square pyramidal rearrangement of its molecular geometry. The free energy profile of the octahedral-to-square pyramidal conversion indicates that the process barrier (5.8 kcal/mol) is of the order of magnitude of the thermal energy at the operating temperature. The formation of hydrogen bonds with surface hydroxyl groups plays a key role in aiding the dissociation of a Zn-O bond. In the square-pyramidal complex, the Zn center has a free coordination position, which might promote the interaction with incoming reagents on the deposition surface. These results provide a valuable atomistic insight on the molecule-to-material conversion process which, in perspective, might help to tailor by design the first nucleation stages of the target ZnO-based nanostructures.
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Affiliation(s)
- Davide Barreca
- CNR-ICMATE and INSTM, Department of Chemical Sciences, Padova University, 35131 Padova, Italy;
| | - Ettore Fois
- Department of Science and High Technology, Insubria University and INSTM, 22100 Como, Italy; (E.F.); (M.O.)
| | - Alberto Gasparotto
- Department of Chemical Sciences, Padova University and INSTM, 35131 Padova, Italy; (A.G.); (C.M.)
| | - Chiara Maccato
- Department of Chemical Sciences, Padova University and INSTM, 35131 Padova, Italy; (A.G.); (C.M.)
| | - Mario Oriani
- Department of Science and High Technology, Insubria University and INSTM, 22100 Como, Italy; (E.F.); (M.O.)
| | - Gloria Tabacchi
- Department of Science and High Technology, Insubria University and INSTM, 22100 Como, Italy; (E.F.); (M.O.)
- Correspondence:
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Nahrstedt V, Stadler D, Fischer T, Duchoň T, Mueller DN, Schneider CM, Mathur S. Molecular Level Synthesis of InFeO 3 and InFeO 3/Fe 2O 3 Nanocomposites. Inorg Chem 2021; 60:3719-3728. [PMID: 33621076 DOI: 10.1021/acs.inorgchem.0c03425] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
New heterometallic In-Fe alkoxides [InFe(OtBu)4(PyTFP)2] (1), [InFe2(OneoPen)9(Py)] (2), and [InFe3(OneoPen)12] (3) were synthesized and structurally characterized. The arrangement of metal centers in mixed-metal framework was governed by the In:Fe ratio and the coordination preferences of Fe(III) and In(III) centers to be in tetrahedral and octahedral environments, respectively. 3 displayed a star-shaped so-called "Mitsubishi" motif with the central In atom coordinated with three tetrahedral {Fe(OneoPen)4}- anionic units. The deterministic structural influence of the larger In atom was evident in 1 and 2 which displayed the coordination of neutral coligands to achieve the desired coordination number. Thermal decomposition studies of compounds 1-3 under inert conditions with subsequent powder diffraction studies revealed the formation of Fe2O3 and In2O3 in the case of 3 and 2, whereas 1 intriguingly produced elemental In and Fe. In contrary, the thermal decomposition of 1-3 under ambient conditions produced a ternary oxide, InFeO3, with additional Fe2O3 present as a secondary phase in a different stoichiometric ratio predetermined through the In:Fe ratio in 2 and 3. The intimate mixing of different phases in InFeO3/Fe2O3 nanocomposites was confirmed by transmission electron microscopy of solid residues obtained after the decomposition of 1 and 2. The pure InFeO3 particles demonstrated ferromagnetic anomalies around 170 K as determined by temperature-dependent field-cooled and zero-field-cooled magnetization experiments. A first-order magnetic transition with an increase in the ZFC measurements was explained by temperature-induced reduction of the Fe-Fe distance and the corresponding increase in superexchange.
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Affiliation(s)
- Vanessa Nahrstedt
- Institute of Inorganic Chemistry, University of Cologne, Greinstr. 6, 50939 Cologne, Germany
| | - Daniel Stadler
- Institute of Inorganic Chemistry, University of Cologne, Greinstr. 6, 50939 Cologne, Germany
| | - Thomas Fischer
- Institute of Inorganic Chemistry, University of Cologne, Greinstr. 6, 50939 Cologne, Germany
| | - Tomáš Duchoň
- PGI-6, Research Centre, Juelich GmbH, Leo-Brandt-Str., 52428 Juelich, Germany
| | - David N Mueller
- PGI-6, Research Centre, Juelich GmbH, Leo-Brandt-Str., 52428 Juelich, Germany
| | - Claus M Schneider
- PGI-6, Research Centre, Juelich GmbH, Leo-Brandt-Str., 52428 Juelich, Germany
| | - Sanjay Mathur
- Institute of Inorganic Chemistry, University of Cologne, Greinstr. 6, 50939 Cologne, Germany
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18
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Parveen S, Premkumar T, Nguyen HH, Govindarajan S, Manikandan D, Anandasadagopan SK, Vijayakumar E. Isostructural metal hydrazones of 2-(methoxycarbonyl-hydrazono)-pentanedioic acid, H2L: Synthesis, cytotoxic activity of nano spinel ZnCo2O4 derived from single source precursor, [Zn1/3Co2/3(HL)2]·3H2O. Inorganica Chim Acta 2021. [DOI: 10.1016/j.ica.2020.120142] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
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19
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Urbain M, Riporto F, Beauquis S, Monnier V, Marty JC, Galez C, Durand C, Chevolot Y, Dantec RL, Mugnier Y. On the Reaction Pathways and Growth Mechanisms of LiNbO 3 Nanocrystals from the Non-Aqueous Solvothermal Alkoxide Route. NANOMATERIALS (BASEL, SWITZERLAND) 2021; 11:E154. [PMID: 33435460 PMCID: PMC7828100 DOI: 10.3390/nano11010154] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/08/2020] [Revised: 01/03/2021] [Accepted: 01/06/2021] [Indexed: 12/31/2022]
Abstract
Phase-pure, highly crystalline sub-50 nm LiNbO3 nanocrystals were prepared from a non-aqueous solvothermal process for 72 h at 230 °C and a commercial precursor solution of mixed lithium niobium ethoxide in its parent alcohol. A systematic variation of the reaction medium composition with the addition of different amounts of co-solvent including butanol, 1,3-propanediol, 1,4-butanediol, and 1,5-pentanediol resulted in the formation of nanocrystals of adjustable mean size and shape anisotropy, as demonstrated from XRD measurements and TEM imaging. Colloidal stability of ethanol- and water-based suspensions was evaluated from dynamic light scattering (DLS)/zeta potential studies and correlated with FTIR data. Thanks to the evolution in the nanocrystal size and shape distribution we observed, as well as to the available literature on the alkoxide chemistry, the reaction pathways and growth mechanisms were finally discussed with a special attention on the monomer formation rate, leading to the nucleation step. The polar, non-perovskite crystalline structure of LiNbO3 was also evidenced to play a major role in the nanocrystal shape anisotropy.
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Affiliation(s)
- Mathias Urbain
- SYMME, University of Savoie Mont Blanc, F-74000 Annecy, France; (M.U.); (F.R.); (S.B.); (J.-C.M.); (C.G.); (C.D.); (R.L.D.)
| | - Florian Riporto
- SYMME, University of Savoie Mont Blanc, F-74000 Annecy, France; (M.U.); (F.R.); (S.B.); (J.-C.M.); (C.G.); (C.D.); (R.L.D.)
| | - Sandrine Beauquis
- SYMME, University of Savoie Mont Blanc, F-74000 Annecy, France; (M.U.); (F.R.); (S.B.); (J.-C.M.); (C.G.); (C.D.); (R.L.D.)
| | - Virginie Monnier
- Institut des Nanotechnologies de Lyon (INL), UMR CNRS 5270, Ecole Centrale de Lyon, Université de Lyon, F-69134 Ecully CEDEX, France; (V.M.); (Y.C.)
| | - Jean-Christophe Marty
- SYMME, University of Savoie Mont Blanc, F-74000 Annecy, France; (M.U.); (F.R.); (S.B.); (J.-C.M.); (C.G.); (C.D.); (R.L.D.)
| | - Christine Galez
- SYMME, University of Savoie Mont Blanc, F-74000 Annecy, France; (M.U.); (F.R.); (S.B.); (J.-C.M.); (C.G.); (C.D.); (R.L.D.)
| | - Christiane Durand
- SYMME, University of Savoie Mont Blanc, F-74000 Annecy, France; (M.U.); (F.R.); (S.B.); (J.-C.M.); (C.G.); (C.D.); (R.L.D.)
| | - Yann Chevolot
- Institut des Nanotechnologies de Lyon (INL), UMR CNRS 5270, Ecole Centrale de Lyon, Université de Lyon, F-69134 Ecully CEDEX, France; (V.M.); (Y.C.)
| | - Ronan Le Dantec
- SYMME, University of Savoie Mont Blanc, F-74000 Annecy, France; (M.U.); (F.R.); (S.B.); (J.-C.M.); (C.G.); (C.D.); (R.L.D.)
| | - Yannick Mugnier
- SYMME, University of Savoie Mont Blanc, F-74000 Annecy, France; (M.U.); (F.R.); (S.B.); (J.-C.M.); (C.G.); (C.D.); (R.L.D.)
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20
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Shah S, Shaikh H, Farrukh S, Malik MI, Mughal ZUN, Bhagat S. Sonochemical synthesis of Co 3O 4 nanoparticles deposited on GO sheets and their potential application as a nanofiller in MMMs for O 2/N 2 separation. RSC Adv 2021; 11:19647-19655. [PMID: 35479244 PMCID: PMC9033576 DOI: 10.1039/d1ra02264d] [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: 03/22/2021] [Accepted: 04/26/2021] [Indexed: 11/21/2022] Open
Abstract
In this study we report an environmentally friendly, facile and straightforward sonochemical synthetic strategy for a Co3O4/GO nanocomposite using N,N′-bis(salicylidene)ethylenediaminocobalt(ii) as a precursor and graphene oxide sheets as an immobilization support for Co3O4 nanoparticles. The synthesis was facilitated by physical and chemical effects of cavitation bubbles. The synthesized nanocomposite was thoroughly characterized for its composition and morphology using Fourier transform infrared spectroscopy (FTIR), Energy dispersive X-ray spectroscopy (EDS), Scanning electron microscopy (SEM), UV-visible, Raman and X-ray diffraction spectroscopy (XRD), etc. The results show Co3O4 nanoparticles of 10 nm (SD 3 nm) were prepared on well exfoliated sheets of GO. The applicability of the synthesized Co3O4/GO nanocomposite was optimized as a nanofiller for mixed matrix membranes (MMMs) comprised of poly(2-acrylamido-2-methyl-1-propanesulfonic acid) and polyvinyl chloride. The affinity of the prepared MMMs was evaluated for the separation of O2/N2 gases by varying the concentration of nanofiller, i.e. 0.03%, 0.04%, 0.05% and 0.075% (w/v). The results display high separation performance for O2/N2 gases with excellent permeance (N2 167 GPU and O2 432 GPU at 1 bar) and O2/N2 selectivity of 2.58, when the MMMs were loaded with 0.05% (w/v) of Co3O4/GO nanocomposite. Sonochemical synthesis of Co3O4/GO nanocomposite.![]()
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Affiliation(s)
- Shahnila Shah
- National Center of Excellence in Analytical Chemistry
- University of Sindh
- Jamshoro-76080
- Pakistan
| | - Huma Shaikh
- National Center of Excellence in Analytical Chemistry
- University of Sindh
- Jamshoro-76080
- Pakistan
| | - Sarah Farrukh
- School of Chemical and Materials Engineering (SCME)
- National University of Sciences & Technology
- Islamabad
- Pakistan
| | - Muhammad Imran Malik
- H.E.J. Research Institute of Chemistry
- International Centre for Chemical and Biological Sciences (ICCBS)
- University of Karachi
- Karachi-75270
- Pakistan
| | - Zaib un Nisa Mughal
- National Center of Excellence in Analytical Chemistry
- University of Sindh
- Jamshoro-76080
- Pakistan
| | - Shabana Bhagat
- National Center of Excellence in Analytical Chemistry
- University of Sindh
- Jamshoro-76080
- Pakistan
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21
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Neto ADBS, Alves da Cruz MG, Jeanneau E, Oliveira AC, Essayem N, Mishra S. Designed sol–gel precursors for atomically dispersed Nb and Pb within TiO2 as catalysts for dihydroxyacetone transformation. Dalton Trans 2021; 50:1604-1609. [DOI: 10.1039/d0dt03726e] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Abstract
New N-methyldiethanolamine-modified metal alkoxides were synthesized and employed as sol–gel precursors to obtain atomically dispersed catalysts with high surface area and tunable acid–base properties.
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Affiliation(s)
- Antonio de Brito Santiago Neto
- Université Claude Bernard Lyon 1
- CNRS
- UMR 5256
- Institut de Recherches sur la Catalyse et l'Environnement de Lyon (IRCELYON)
- 69626 Villeurbanne
| | - Márcia Gabriely Alves da Cruz
- Université Claude Bernard Lyon 1
- CNRS
- UMR 5256
- Institut de Recherches sur la Catalyse et l'Environnement de Lyon (IRCELYON)
- 69626 Villeurbanne
| | - Erwann Jeanneau
- Université Claude Bernard Lyon 1
- Centre de Diffractométrie Henri Longchambon
- 69100 Villeurbanne
- France
| | - Alcineia Conceição Oliveira
- Universidade Federal do Ceará
- Campus do Pici-Bloco 940
- Departamento de Química Analítica e Fisioquímica
- 60.000.000 Fortaleza
- Brazil
| | - Nadine Essayem
- Université Claude Bernard Lyon 1
- CNRS
- UMR 5256
- Institut de Recherches sur la Catalyse et l'Environnement de Lyon (IRCELYON)
- 69626 Villeurbanne
| | - Shashank Mishra
- Université Claude Bernard Lyon 1
- CNRS
- UMR 5256
- Institut de Recherches sur la Catalyse et l'Environnement de Lyon (IRCELYON)
- 69626 Villeurbanne
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