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Zheng B, Fan J, Chen B, Qin X, Wang J, Wang F, Deng R, Liu X. Rare-Earth Doping in Nanostructured Inorganic Materials. Chem Rev 2022; 122:5519-5603. [PMID: 34989556 DOI: 10.1021/acs.chemrev.1c00644] [Citation(s) in RCA: 155] [Impact Index Per Article: 77.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
Impurity doping is a promising method to impart new properties to various materials. Due to their unique optical, magnetic, and electrical properties, rare-earth ions have been extensively explored as active dopants in inorganic crystal lattices since the 18th century. Rare-earth doping can alter the crystallographic phase, morphology, and size, leading to tunable optical responses of doped nanomaterials. Moreover, rare-earth doping can control the ultimate electronic and catalytic performance of doped nanomaterials in a tunable and scalable manner, enabling significant improvements in energy harvesting and conversion. A better understanding of the critical role of rare-earth doping is a prerequisite for the development of an extensive repertoire of functional nanomaterials for practical applications. In this review, we highlight recent advances in rare-earth doping in inorganic nanomaterials and the associated applications in many fields. This review covers the key criteria for rare-earth doping, including basic electronic structures, lattice environments, and doping strategies, as well as fundamental design principles that enhance the electrical, optical, catalytic, and magnetic properties of the material. We also discuss future research directions and challenges in controlling rare-earth doping for new applications.
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Affiliation(s)
- Bingzhu Zheng
- State Key Laboratory of Silicon Materials, Institute for Composites Science Innovation, School of Materials Science and Engineering, Zhejiang University, Hangzhou 310027, China
| | - Jingyue Fan
- Department of Chemistry, National University of Singapore, Singapore 117543, Singapore
| | - Bing Chen
- Department of Materials Science and Engineering, City University of Hong Kong, Hong Kong SAR 999077, China
| | - Xian Qin
- Department of Chemistry, National University of Singapore, Singapore 117543, Singapore
| | - Juan Wang
- Institute of Environmental Health, MOE Key Laboratory of Environmental Remediation and Ecosystem Health, College of Environmental & Resource Sciences, Zhejiang University, Hangzhou 310058, China
| | - Feng Wang
- Department of Materials Science and Engineering, City University of Hong Kong, Hong Kong SAR 999077, China
| | - Renren Deng
- State Key Laboratory of Silicon Materials, Institute for Composites Science Innovation, School of Materials Science and Engineering, Zhejiang University, Hangzhou 310027, China
| | - Xiaogang Liu
- Department of Chemistry, National University of Singapore, Singapore 117543, Singapore
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Zhang T, Doert T, Wang H, Zhang S, Ruck M. Inorganic Synthesis Based on Reactions of Ionic Liquids and Deep Eutectic Solvents. Angew Chem Int Ed Engl 2021; 60:22148-22165. [PMID: 34032351 PMCID: PMC8518931 DOI: 10.1002/anie.202104035] [Citation(s) in RCA: 48] [Impact Index Per Article: 16.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2021] [Indexed: 02/03/2023]
Abstract
Ionic liquids and deep eutectic solvents are of growing interest as solvents for the resource‐efficient synthesis of inorganic materials. This Review covers chemical reactions of various deep eutectic solvents and types of ionic liquids, including metal‐containing ionic liquids, [BF4]−‐ or [PF6]−‐based ionic liquids, basic ionic liquids, and chalcogen‐containing ionic liquids. Cases in which cations, anions, or both are incorporated into the final products are also included. The purpose of this Review is to raise caution about the chemical reactivity of ionic liquids and deep eutectic solvents and to establish a guide for their proper use.
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Affiliation(s)
- Tao Zhang
- Beijing Key Laboratory of Ionic Liquids Clean Process, CAS Key Laboratory of Green Process and Engineering, Institute of Process Engineering, Chinese Academy of Sciences, 100190, Beijing, China.,Innovation Academy for Green Manufacture, Chinese Academy of Sciences, Beijing, 100190, China
| | - Thomas Doert
- Faculty of Chemistry and Food Chemistry, Technische Universität Dresden, 01062, Dresden, Germany
| | - Hui Wang
- Beijing Key Laboratory of Ionic Liquids Clean Process, CAS Key Laboratory of Green Process and Engineering, Institute of Process Engineering, Chinese Academy of Sciences, 100190, Beijing, China.,Innovation Academy for Green Manufacture, Chinese Academy of Sciences, Beijing, 100190, China
| | - Suojiang Zhang
- Beijing Key Laboratory of Ionic Liquids Clean Process, CAS Key Laboratory of Green Process and Engineering, Institute of Process Engineering, Chinese Academy of Sciences, 100190, Beijing, China.,Innovation Academy for Green Manufacture, Chinese Academy of Sciences, Beijing, 100190, China
| | - Michael Ruck
- Faculty of Chemistry and Food Chemistry, Technische Universität Dresden, 01062, Dresden, Germany.,Max Planck Institute for Chemical Physics of Solids, 01187, Dresden, Germany
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Zhang T, Doert T, Wang H, Zhang S, Ruck M. Ionische Flüssigkeiten und stark eutektische Lösungsmittel in der anorganischen Synthese. Angew Chem Int Ed Engl 2021. [DOI: 10.1002/ange.202104035] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Affiliation(s)
- Tao Zhang
- Beijing Key Laboratory of Ionic Liquids Clean Process CAS Key Laboratory of Green Process and Engineering Institute of Process Engineering Chinese Academy of Sciences 100190 Beijing China
- Innovation Academy for Green Manufacture Chinese Academy of Sciences Beijing 100190 China
| | - Thomas Doert
- Fakultät für Chemie und Lebensmittelchemie Technische Universität Dresden 01062 Dresden Deutschland
| | - Hui Wang
- Beijing Key Laboratory of Ionic Liquids Clean Process CAS Key Laboratory of Green Process and Engineering Institute of Process Engineering Chinese Academy of Sciences 100190 Beijing China
- Innovation Academy for Green Manufacture Chinese Academy of Sciences Beijing 100190 China
| | - Suojiang Zhang
- Beijing Key Laboratory of Ionic Liquids Clean Process CAS Key Laboratory of Green Process and Engineering Institute of Process Engineering Chinese Academy of Sciences 100190 Beijing China
- Innovation Academy for Green Manufacture Chinese Academy of Sciences Beijing 100190 China
| | - Michael Ruck
- Fakultät für Chemie und Lebensmittelchemie Technische Universität Dresden 01062 Dresden Deutschland
- Max-Planck-Institut für Chemische Physik fester Stoffe 01187 Dresden Deutschland
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Li Z, Dong J, Wang L, Zhang Y, Zhuang T, Wang H, Cui X, Wang Z. A power-triggered preparation strategy of nano-structured inorganics: sonosynthesis. NANOSCALE ADVANCES 2021; 3:2423-2447. [PMID: 36134164 PMCID: PMC9418414 DOI: 10.1039/d1na00038a] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/14/2021] [Accepted: 03/05/2021] [Indexed: 06/16/2023]
Abstract
Ultrasound irradiation covers many chemical reactions crucially aiming to design and synthesize various structured materials as an enduring trend in frontier research studies. Here, we focus on the latest progress of ultrasound-assisted synthesis and present the basic principles or mechanisms of sonosynthesis (or sonochemical synthesis) from ultrasound irradiation in a brand new way, including primary sonosynthesis, secondary sonosynthesis, and synergetic sonosynthesis. This current review describes in detail the various sonochemical synthesis strategies for nano-structured inorganic materials and the unique aspects of products including the size, morphology, structure, and properties. In addition, the review points out the probable challenges and technological potential for future advancement. We hope that such a review can provide a comprehensive understanding of sonosynthesis and emphasize the great significance of structured materials synthesis as a power-induced strategy broadening the updated applications of ultrasound.
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Affiliation(s)
- Zhanfeng Li
- Shandong Sino-Japanese Center for Collaborative Research of Carbon Nanomaterials, College of Chemistry and Chemical Engineering, Instrumental Analysis Center of Qingdao University 266071 Qingdao China
| | - Jun Dong
- Shandong Sino-Japanese Center for Collaborative Research of Carbon Nanomaterials, College of Chemistry and Chemical Engineering, Instrumental Analysis Center of Qingdao University 266071 Qingdao China
| | - Lun Wang
- Shandong Sino-Japanese Center for Collaborative Research of Carbon Nanomaterials, College of Chemistry and Chemical Engineering, Instrumental Analysis Center of Qingdao University 266071 Qingdao China
| | - Yongqiang Zhang
- College of Chemistry, Jilin University 130012 Changchun China
- Junan Sub-Bureau of Linyi Ecological Environmental Bureau 276600 Linyi China
| | - Tingting Zhuang
- Shandong Sino-Japanese Center for Collaborative Research of Carbon Nanomaterials, College of Chemistry and Chemical Engineering, Instrumental Analysis Center of Qingdao University 266071 Qingdao China
| | - Huiqi Wang
- Shandong Sino-Japanese Center for Collaborative Research of Carbon Nanomaterials, College of Chemistry and Chemical Engineering, Instrumental Analysis Center of Qingdao University 266071 Qingdao China
| | - Xuejun Cui
- College of Chemistry, Jilin University 130012 Changchun China
| | - Zonghua Wang
- Shandong Sino-Japanese Center for Collaborative Research of Carbon Nanomaterials, College of Chemistry and Chemical Engineering, Instrumental Analysis Center of Qingdao University 266071 Qingdao China
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Invernizzi R, Guerlou-Demourgues L, Weill F, Lemoine A, Dourges MA, Baraille I, Flahaut D, Olchowka J. Controlled Nanostructuration of Cobalt Oxyhydroxide Electrode Material for Hybrid Supercapacitors. MATERIALS (BASEL, SWITZERLAND) 2021; 14:2325. [PMID: 33947167 PMCID: PMC8124577 DOI: 10.3390/ma14092325] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/30/2021] [Revised: 04/27/2021] [Accepted: 04/28/2021] [Indexed: 11/16/2022]
Abstract
Nanostructuration is one of the most promising strategies to develop performant electrode materials for energy storage devices, such as hybrid supercapacitors. In this work, we studied the influence of precipitation medium and the use of a series of 1-alkyl-3-methylimidazolium bromide ionic liquids for the nanostructuration of β(III) cobalt oxyhydroxides. Then, the effect of the nanostructuration and the impact of the different ionic liquids used during synthesis were investigated in terms of energy storage performances. First, we demonstrated that forward precipitation, in a cobalt-rich medium, leads to smaller particles with higher specific surface areas (SSA) and an enhanced mesoporosity. Introduction of ionic liquids (ILs) in the precipitation medium further strongly increased the specific surface area and the mesoporosity to achieve well-nanostructured materials with a very high SSA of 265 m2/g and porosity of 0.43 cm3/g. Additionally, we showed that ILs used as surfactant and template also functionalize the nanomaterial surface, leading to a beneficial synergy between the highly ionic conductive IL and the cobalt oxyhydroxide, which lowers the resistance charge transfer and improves the specific capacity. The nature of the ionic liquid had an important influence on the final electrochemical properties and the best performances were reached with the ionic liquid containing the longest alkyl chain.
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Affiliation(s)
- Ronan Invernizzi
- CNRS, University of Bordeaux, Bordeaux INP, ICMCB UMR CNRS #5026, F-33600 Pessac, France; (R.I.); (L.G.-D.); (F.W.)
- RS2E, Réseau Français sur le Stockage Electrochimique de l’Energie, FR CNRS #3459, CEDEX 1, F-80039 Amiens, France;
| | - Liliane Guerlou-Demourgues
- CNRS, University of Bordeaux, Bordeaux INP, ICMCB UMR CNRS #5026, F-33600 Pessac, France; (R.I.); (L.G.-D.); (F.W.)
- RS2E, Réseau Français sur le Stockage Electrochimique de l’Energie, FR CNRS #3459, CEDEX 1, F-80039 Amiens, France;
- ALISTORE-ERI European Research Institute, FR CNRS #3104, CEDEX 1, F-80039 Amiens, France
| | - François Weill
- CNRS, University of Bordeaux, Bordeaux INP, ICMCB UMR CNRS #5026, F-33600 Pessac, France; (R.I.); (L.G.-D.); (F.W.)
- RS2E, Réseau Français sur le Stockage Electrochimique de l’Energie, FR CNRS #3459, CEDEX 1, F-80039 Amiens, France;
| | - Alexia Lemoine
- CNRS/University of Pau and Pays de l’Adour/E2S UPPA, Institut des Sciences Analytiques et de Physicochimie pour l’Environnement et les Matériaux—UMR 5254, F-64000 Pau, France; (A.L.); (I.B.)
| | - Marie-Anne Dourges
- Institut des Sciences Molaires, University of Bordeaux, UMR 5255, F-33405 Talence, France;
| | - Isabelle Baraille
- CNRS/University of Pau and Pays de l’Adour/E2S UPPA, Institut des Sciences Analytiques et de Physicochimie pour l’Environnement et les Matériaux—UMR 5254, F-64000 Pau, France; (A.L.); (I.B.)
| | - Delphine Flahaut
- RS2E, Réseau Français sur le Stockage Electrochimique de l’Energie, FR CNRS #3459, CEDEX 1, F-80039 Amiens, France;
- CNRS/University of Pau and Pays de l’Adour/E2S UPPA, Institut des Sciences Analytiques et de Physicochimie pour l’Environnement et les Matériaux—UMR 5254, F-64000 Pau, France; (A.L.); (I.B.)
| | - Jacob Olchowka
- CNRS, University of Bordeaux, Bordeaux INP, ICMCB UMR CNRS #5026, F-33600 Pessac, France; (R.I.); (L.G.-D.); (F.W.)
- RS2E, Réseau Français sur le Stockage Electrochimique de l’Energie, FR CNRS #3459, CEDEX 1, F-80039 Amiens, France;
- ALISTORE-ERI European Research Institute, FR CNRS #3104, CEDEX 1, F-80039 Amiens, France
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Li Z, Dong J, Zhang H, Zhang Y, Wang H, Cui X, Wang Z. Sonochemical catalysis as a unique strategy for the fabrication of nano-/micro-structured inorganics. NANOSCALE ADVANCES 2021; 3:41-72. [PMID: 36131881 PMCID: PMC9418832 DOI: 10.1039/d0na00753f] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/08/2020] [Accepted: 10/22/2020] [Indexed: 05/14/2023]
Abstract
Ultrasound-assisted approaches, as an important trend in material synthesis, have emerged for designing and creating nano-/micro-structures. This review simply presents the basic principles of ultrasound irradiation including acoustic cavitation, sonochemical effects, physical and/or mechanical effects, and on the basis of the latest progress, it newly summarizes sonochemical catalysis for the fabrication of nano-structured or micro-structured inorganic materials such as metals, alloys, metal compounds, non-metal materials, and inorganic composites, where the theories or mechanisms of catalytic synthetic routes, and the morphologies, structures, sizes, properties and applications of products are described in detail. In the review, a few technological potentials and probable challenges of sonochemical catalysis are also highlighted for the future advance of synthesis methods. Therefore, sonochemical catalysis or ultrasound-assisted synthesis will serve as a unique strategy to reveal its great significance in material fabrication.
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Affiliation(s)
- Zhanfeng Li
- Shandong Sino-Japanese Center for Collaborative Research of Carbon Nanomaterials, Instrumental Analysis Center, College of Chemistry and Chemical Engineering, Qingdao University 266071 Qingdao China
| | - Jun Dong
- Shandong Sino-Japanese Center for Collaborative Research of Carbon Nanomaterials, Instrumental Analysis Center, College of Chemistry and Chemical Engineering, Qingdao University 266071 Qingdao China
| | - Huixin Zhang
- Shandong Sino-Japanese Center for Collaborative Research of Carbon Nanomaterials, Instrumental Analysis Center, College of Chemistry and Chemical Engineering, Qingdao University 266071 Qingdao China
| | - Yongqiang Zhang
- Junan Sub-Bureau of Linyi Ecological Environmental Bureau 276600 Linyi China
| | - Huiqi Wang
- Shandong Sino-Japanese Center for Collaborative Research of Carbon Nanomaterials, Instrumental Analysis Center, College of Chemistry and Chemical Engineering, Qingdao University 266071 Qingdao China
| | - Xuejun Cui
- College of Chemistry, Jilin University 130012 Changchun China
| | - Zonghua Wang
- Shandong Sino-Japanese Center for Collaborative Research of Carbon Nanomaterials, Instrumental Analysis Center, College of Chemistry and Chemical Engineering, Qingdao University 266071 Qingdao China
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Olchowka J, Nguyen LHB, Petit E, Camacho PS, Masquelier C, Carlier D, Croguennec L. Ionothermal Synthesis of Polyanionic Electrode Material Na3V2(PO4)2FO2 through a Topotactic Reaction. Inorg Chem 2020; 59:17282-17290. [DOI: 10.1021/acs.inorgchem.0c02546] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Jacob Olchowka
- CNRS, Univ. Bordeaux, Bordeaux INP, ICMCB UMR 5026, F-33600, Pessac, France
- RS2E, Réseau Français sur le Stockage Electrochimique de l’Energie, FR CNRS 3459, F-80039 Amiens Cedex 1, France
- ALISTORE-ERI European Research Institute, FR CNRS 3104, Amiens, F-80039 Cedex 1, France
| | - Long H. B. Nguyen
- CNRS, Univ. Bordeaux, Bordeaux INP, ICMCB UMR 5026, F-33600, Pessac, France
- RS2E, Réseau Français sur le Stockage Electrochimique de l’Energie, FR CNRS 3459, F-80039 Amiens Cedex 1, France
- Laboratoire de Réactivité et de Chimie des Solides, CNRS-UMR no. 7314, Université de Picardie Jules Verne, F-80039 Amiens Cedex 1, France
| | - Emmanuel Petit
- CNRS, Univ. Bordeaux, Bordeaux INP, ICMCB UMR 5026, F-33600, Pessac, France
- RS2E, Réseau Français sur le Stockage Electrochimique de l’Energie, FR CNRS 3459, F-80039 Amiens Cedex 1, France
| | - Paula Sanz Camacho
- CNRS, Univ. Bordeaux, Bordeaux INP, ICMCB UMR 5026, F-33600, Pessac, France
| | - Christian Masquelier
- RS2E, Réseau Français sur le Stockage Electrochimique de l’Energie, FR CNRS 3459, F-80039 Amiens Cedex 1, France
- ALISTORE-ERI European Research Institute, FR CNRS 3104, Amiens, F-80039 Cedex 1, France
- Laboratoire de Réactivité et de Chimie des Solides, CNRS-UMR no. 7314, Université de Picardie Jules Verne, F-80039 Amiens Cedex 1, France
| | - Dany Carlier
- CNRS, Univ. Bordeaux, Bordeaux INP, ICMCB UMR 5026, F-33600, Pessac, France
- RS2E, Réseau Français sur le Stockage Electrochimique de l’Energie, FR CNRS 3459, F-80039 Amiens Cedex 1, France
- ALISTORE-ERI European Research Institute, FR CNRS 3104, Amiens, F-80039 Cedex 1, France
| | - Laurence Croguennec
- CNRS, Univ. Bordeaux, Bordeaux INP, ICMCB UMR 5026, F-33600, Pessac, France
- RS2E, Réseau Français sur le Stockage Electrochimique de l’Energie, FR CNRS 3459, F-80039 Amiens Cedex 1, France
- ALISTORE-ERI European Research Institute, FR CNRS 3104, Amiens, F-80039 Cedex 1, France
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Olchowka J, Tailliez T, Bourgeois L, Dourges MA, Guerlou-Demourgues L. Ionic liquids to monitor the nano-structuration and the surface functionalization of material electrodes: a proof of concept applied to cobalt oxyhydroxide. NANOSCALE ADVANCES 2019; 1:2240-2249. [PMID: 36131974 PMCID: PMC9417896 DOI: 10.1039/c9na00171a] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/19/2019] [Accepted: 04/09/2019] [Indexed: 06/15/2023]
Abstract
This paper reports on an innovative and efficient approach based on the use of ionic liquids to govern the nano-structuration of HCoO2, in order to optimize the porosity and enhance the ionic diffusion through the electrode materials. In this work, we show that (1-pentyl-3-methyl-imidazolium bromide (PMIMBr) and 1-ethyl-3-methylimidazolium tetrafluoroborate (EMIMBF4)) ionic liquids (ILs) used as templates during the synthesis orientate the nanoparticle aggregation which leads to increase of the porosity and the average pore size of the electrode material. It is also demonstrated that the ILs are strongly bonded to the HCoO2 surface, leading to surface functionalized HCoO2 materials, also called nanohybrids. This surface tailoring stabilizes the material upon cycling and shifts the oxidation potential linked to the Co(iii)/Co(iv) redox couple to lower voltage in an alkaline 5 M KOH electrolyte. The surface and porosity optimizations facilitate the ionic diffusion through the material, improve the electron transfer ability within the electrode and lead to greatly enhanced specific capacity in both alkaline 5 M-KOH and neutral 0.5 M-K2SO4 aqueous electrolytes (66.7 mA h g-1 and 47.5 mA h g-1 respectively for HCoO2-PMIMBr and HCoO2-EMIMBF4 compared to 18.1 mA h g-1 for bare HCoO2 in 5 M-KOH at 1 A g-1).
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Affiliation(s)
- Jacob Olchowka
- CNRS, Univ. Bordeaux, Bordeaux INP, ICMCB UMR 5026 F-33600 Pessac France
- RS2E, Réseau Français sur le Stockage Electrochimique de l'Energie, FR CNRS 3459 F-80039 Amiens Cedex 1 France
| | - Tiphaine Tailliez
- CNRS, Univ. Bordeaux, Bordeaux INP, ICMCB UMR 5026 F-33600 Pessac France
| | - Lydie Bourgeois
- Institut des Sciences Molaires, Univ. Bordeaux, UMR 5255 F-33405 Talence France
| | - Marie Anne Dourges
- Institut des Sciences Molaires, Univ. Bordeaux, UMR 5255 F-33405 Talence France
| | - Liliane Guerlou-Demourgues
- CNRS, Univ. Bordeaux, Bordeaux INP, ICMCB UMR 5026 F-33600 Pessac France
- RS2E, Réseau Français sur le Stockage Electrochimique de l'Energie, FR CNRS 3459 F-80039 Amiens Cedex 1 France
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Chang YH, Chang HC, Fu YP. Utilizing Infrared Spectroscopy to Analyze the Interfacial Structures of Ionic Liquids/Al₂O₃ and Ionic Liquids/Mica Mixtures under High Pressures. NANOMATERIALS 2019; 9:nano9030373. [PMID: 30841586 PMCID: PMC6473959 DOI: 10.3390/nano9030373] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/29/2019] [Revised: 02/26/2019] [Accepted: 02/28/2019] [Indexed: 01/05/2023]
Abstract
The interfacial interactions between ionic liquids (1,3-dimethylimidazolium methyl sulfate and 1-ethyl-3-methylimidazolium trifluoromethanesulfonate) and solid surfaces (mesoporous aluminum oxide and mica) have been studied by infrared spectroscopy at high pressures (up to 2.5 GPa). Under ambient pressure, the spectroscopic features of pure ionic liquids and mixtures of ionic liquids/solid particles (Al2O3 and mica) are similar. As the pressure is increased, the cooperative effect in the local structure of pure 1,3-dimethylimidazolium methyl sulfate becomes significantly enhanced as the imidazolium C–H absorptions of the ionic liquid are red-shifted. However, this pressure-enhanced effect is reduced by adding the solid particles (Al2O3 and mica) to 1,3-dimethylimidazolium methyl sulfate. Although high-pressure IR can detect the interactions between 1,3-dimethylimidazolium methyl sulfate and particle surfaces, the difference in the interfacial interactions in the mixtures of Al2O3 and mica is not clear. By changing the type of ionic liquid to 1-ethyl-3-methylimidazolium trifluoromethanesulfonate, the interfacial interactions become more sensitive to the type of solid surfaces. The mica particles in the mixture perturb the local structure of 1-ethyl-3-methylimidazolium trifluoromethanesulfonate under high pressures, forcing 1-ethyl-3-methylimidazolium trifluoromethanesulfonate to form into an isolated structure. For Al2O3, 1-ethyl-3-methylimidazolium trifluoromethanesulfonate tends to form an associated structure under high pressures.
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Affiliation(s)
- Yen-Hsu Chang
- Department of Chemistry, National Dong Hwa University, Shoufeng, Hualien 974, Taiwan.
| | - Hai-Chou Chang
- Department of Chemistry, National Dong Hwa University, Shoufeng, Hualien 974, Taiwan.
| | - Yen-Pei Fu
- Department of Materials Science and Engineering, National Dong Hwa University, Shoufeng, Hualien 974, Taiwan.
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Ruiz Arana L, Olchowka J, Terraschke H. Monitoring the solvation process and stability of Eu2+ in an ionic liquid by in situ luminescence analysis. ZEITSCHRIFT FUR NATURFORSCHUNG SECTION B-A JOURNAL OF CHEMICAL SCIENCES 2018. [DOI: 10.1515/znb-2018-0201] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Abstract
Ionic liquids (ILs) offer the remarkable possibility of the direct synthesis of Eu2+-doped nanophosphors in solution, under atmospheric conditions, without the necessity of a high-temperature post-synthetic reduction from its trivalent oxidation state. This work uses for the first time in situ luminescence measurements for monitoring the solvation process of Eu2+ from the solid salt to the IL and its stability against oxidation under atmospheric conditions. Upon the addition of EuBr2 to 1-butyl-3-methyl-imidazolium tetrafluoroborate, the formation of the solvation shell is detected by the shift of the emission band at approximately 24 100 cm−1 assigned to the 5d→4f electronic transitions of Eu2+ within EuBr2 to approximately 22 000 cm−1, assigned to Eu2+ within BminBF4, tracking the time-dependent influence of the Eu2+ coordination environment on the crystal field splitting of its d orbitals. Even though the solubility of EuBr2 was demonstrated to be improved by reducing the concentration and increasing the temperature to 60°C, the performance of reactions at room temperature is recommended for future synthesis of Eu2+ materials in ILs due to the slight oxidation to Eu3+ observed upon heating.
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Affiliation(s)
- Laura Ruiz Arana
- Institut für Anorganische Chemie , Christian-Albrechts-Universität zu Kiel , Max-Eyth-Straße 2 , 24118 Kiel , Germany
| | - Jacob Olchowka
- Département de Chimie Physique , Université de Genève, Quai Ernest Ansermet, 30 – Science II , 1211 Genève 4 , Switzerland
- CNRS , Université de Bordeaux, Bordeaux INP, ICMCB UMR 5026 , Pessac, F-33600 , France
| | - Huayna Terraschke
- Institut für Anorganische Chemie , Christian-Albrechts-Universität zu Kiel , Max-Eyth-Straße 2 , 24118 Kiel , Germany
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11
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Olchowka J, Hagemann H, Delgado T, Wickleder C. The influence of ionothermal synthesis using BmimBF 4 as a solvent on nanophosphor BaFBr:Eu 2+ photoluminescence. NANOSCALE 2018; 10:19706-19710. [PMID: 30350833 DOI: 10.1039/c8nr06842a] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Ionothermal synthesis is a strongly growing research area due to the outstanding physical and chemical properties of ionic liquids (ILs) in the design of new materials, however, the interaction of these IL molecules with optical materials and their effect on the luminescence properties of the materials are poorly known. In this work, it is shown that the imidazolium based BmimBF4 ionic liquid, used as a solvent during the synthesis, tethers at the surface of the nanoparticles and influences the photoluminescence of the nanophosphor BaFBr:Eu2+ materials. In time resolved spectra, two different emissions are observed for the material synthesized by the ionothermal approach, one corresponding to Eu(ii) 5d-4f transitions in the BaFBr host with a decay time of 843 ns and the other with a much faster decay time compared to the ionic liquid BmimBF4.
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Affiliation(s)
- Jacob Olchowka
- Département de Chimie-Physique, Université de Genève, CH-1211 Geneva 4, Switzerland.
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