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Siddique F, Gonzalez-Cortes S, Mirzaei A, Xiao T, Rafiq MA, Zhang X. Solution combustion synthesis: the relevant metrics for producing advanced and nanostructured photocatalysts. NANOSCALE 2022; 14:11806-11868. [PMID: 35920714 DOI: 10.1039/d2nr02714c] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
The current developments and progress in energy and environment-related areas pay special attention to the fabrication of advanced nanomaterials via green and sustainable paths to accomplish chemical circularity. The design and preparation methods of photocatalysts play a prime role in determining the structural, surface characteristics and optoelectronic properties of the final products. The solution combustion synthesis (SCS) technique is a relatively novel, cost-effective, and efficient method for the bulk production of nanostructured materials. SCS-fabricated metal oxides are of great technological importance in photocatalytic, environmental and energy applications. To date, the SCS route has been employed to produce a large variety of solid materials such as metals, sulfides, carbides, nitrides and single or complex metal oxides. This review intends to provide a holistic perspective of the different steps involved in the chemistry of SCS of advanced photocatalysts, and pursues several SCS metrics that influence their photocatalytic performances to establish a feasible approach to design advanced photocatalysts. The study highlights the fundamentals of SCS and the importance of various combustion parameters in the characteristics of the fabricated photocatalysts. Consequently, this work deals with the design of a concise framework to link the fine adjustment of SCS parameters for the development of efficient metal oxide photocatalysts for energy and environmental applications.
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Affiliation(s)
- Fizza Siddique
- School of Science, Minzu University of China, Beijing, 100081, People's Republic of China.
- Department of Physics and Applied Mathematics, Pakistan Institute of Engineering and Applied Sciences, Nilore, Islamabad 45650, Pakistan
| | - Sergio Gonzalez-Cortes
- Inorganic Chemistry Laboratory, Department of Chemistry, University of Oxford, South Parks Road, Oxford OX1 3QR, UK.
| | - Amir Mirzaei
- Institut National de la Recherche Scientifique, Centre Énergie, Matériaux et Télécommunications, 1650 Boulevard Lionel-Boulet, Varennes, Québec J3X 1P7, Canada
| | - Tiancun Xiao
- Inorganic Chemistry Laboratory, Department of Chemistry, University of Oxford, South Parks Road, Oxford OX1 3QR, UK.
| | - M A Rafiq
- Department of Physics and Applied Mathematics, Pakistan Institute of Engineering and Applied Sciences, Nilore, Islamabad 45650, Pakistan
| | - Xiaoming Zhang
- School of Science, Minzu University of China, Beijing, 100081, People's Republic of China.
- Optoelectronics Research Center, Minzu University of China, Beijing, 100081, People's Republic of China
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Wahib N, Riesen N, Riesen H. Reversible Mn valence state switching in submicron α-Al 2O 3:Mn by soft X-rays and blue light - a potential pathway towards multilevel optical data storage. Phys Chem Chem Phys 2022; 24:6155-6162. [PMID: 35225305 DOI: 10.1039/d1cp05737e] [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 generation of Mn4+ in α-Al2O3:Mn3+ by soft X-ray exposure is demonstrated with a large dynamic range of the X-ray generated Mn4+ luminescence signal, indicating the potential use of α-Al2O3:Mn3+ for multilevel optical data storage. Samples with a range of Mn concentrations (0.05, 0.1, 0.2, 0.4, 0.6 and 1.2 atom%) were prepared via a facile combustion method and the sample with 0.4 atom% was found to display the highest luminescence intensity. The stored information can be read out via the R-lines (2E → 4A2) under ∼470 nm (4A2 → 4T2), or ∼630 nm (4A2 → 2T1) excitation with the latter being preferred since photobleaching is minimized. Interestingly, the Mn4+ valence state can be fully switched back to Mn3+ by blue light exposure (e.g., 462 nm laser diode). The stored information could be repeatedly written and erased, showing no significant deterioration over five consecutive cycles, with less than 5% uncertainty.
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Affiliation(s)
- Norfadira Wahib
- School of Science, The University of New South Wales, Canberra ACT 2600, Australia.
| | - Nicolas Riesen
- ARC IDEAL Research Hub, Future Industries Institute, STEM, University of South Australia, Adelaide, SA 5095, Australia
| | - Hans Riesen
- School of Science, The University of New South Wales, Canberra ACT 2600, Australia.
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Hoffmann RC, Liedke MO, Butterling M, Wagner A, Trouillet V, Schneider JJ. Solution synthesis and dielectric properties of alumina thin films: understanding the role of the organic additive in film formation. Dalton Trans 2021; 50:8811-8819. [PMID: 34095921 DOI: 10.1039/d1dt01439k] [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
Alumina thin films are synthesized by combustion synthesis of mixtures of aluminium nitrate (ALN) and methylcarbazate (MCZ). The interdependence of the ratio of oxidizer and reducing agent on composition, microstructure and electronic properties of the resulting oxide layers is investigated. The dielectric and insulating behaviour is improved by addition of different amounts of MCZ (MCZ : ALN = 0.67 or 2.5). In this way films (thickness ∼140 nm) with a dielectric constant κ of 9.7 and a dielectric loss tan δ below 0.015 can be achieved. Medium concentrations of MCZ (MCZ : ALN = 1.0 or 1.5) lead to films with lower performance, though. Our studies indicate two opposing effects of the organic additive. Removal of organic residues during film formation as combustion gases is potentially detrimental. Larger amounts of MCZ, however, cause condensation reactions in the precusor mixture, which improve the microstructure. The porosity of the films can be sucessfully analyzed by positron annihilation liftetime studies. In this way the impact of the organic ligand sphere on the resulting microstructure can be quantified. Samples prepared from ALN alone exhibit mesopores and also larger micropores. In contrast, the formation of mesopores can be inhibited by addition of MCZ.
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Affiliation(s)
- Rudolf C Hoffmann
- Eduard-Zintl-Institut für Anorganische und Physikalische Chemie, Technische Universität Darmstadt, Alarich-Weiss-Straße 12, 64287 Darmstadt, Germany.
| | - Maciej O Liedke
- Institute of Radiation Physics, Helmholtz-Zentrum Dresden-Rossendorf, Bautzner Landstraße 400, 01328 Dresden, Germany
| | - Maik Butterling
- Institute of Radiation Physics, Helmholtz-Zentrum Dresden-Rossendorf, Bautzner Landstraße 400, 01328 Dresden, Germany
| | - Andreas Wagner
- Institute of Radiation Physics, Helmholtz-Zentrum Dresden-Rossendorf, Bautzner Landstraße 400, 01328 Dresden, Germany
| | - Vanessa Trouillet
- Institute for Applied Materials (IAM-ESS) and Karlsruhe Nano Micro Facility (KNMF), Karlsruhe Institute of Technology (KIT), Hermann-von-Helmholtz-Platz 1, 76344 Eggenstein-Leopoldshafen, Germany
| | - Jörg J Schneider
- Eduard-Zintl-Institut für Anorganische und Physikalische Chemie, Technische Universität Darmstadt, Alarich-Weiss-Straße 12, 64287 Darmstadt, Germany.
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Liquid phase oxidation of benzyl alcohol to benzaldehyde over chromium borophosphate catalyst synthesized by solution combustion method using different types of fuel. RESEARCH ON CHEMICAL INTERMEDIATES 2020. [DOI: 10.1007/s11164-020-04155-2] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
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Frikha K, Limousy L, Bouaziz J, Chaari K, Josien L, Nouali H, Michelin L, Vidal L, Hajjar-Garreau S, Bennici S. Binary Oxides Prepared by Microwave-Assisted Solution Combustion: Synthesis, Characterization and Catalytic Activity. MATERIALS 2019; 12:ma12060910. [PMID: 30893838 PMCID: PMC6471156 DOI: 10.3390/ma12060910] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/25/2019] [Revised: 03/11/2019] [Accepted: 03/15/2019] [Indexed: 11/16/2022]
Abstract
Three different alumina-based Ni, Cu, Co oxide catalysts with metal loading of 10 wt %, and labeled 10Ni–Al, 10Co–Al and 10Cu–Al, were prepared by microwave-assisted solution combustion. Their morphological, structural and surface properties were deeply investigated by complementary physico-chemical techniques. Finally, the three materials were tested in CO oxidation used as test reaction for comparing their catalytic performance. The 10Cu–Al catalyst was constituted of copper oxide phase, while the 10Ni–Al and 10Co–Al catalysts showed the presence of “spinels” phases on the surface. The well-crystallized copper oxide phase in the 10Cu–Al catalyst, obtained by microwave synthesis, allowed for obtaining very high catalytic activity. With a CO conversion of 100% at 225 °C, the copper containing catalyst showed a much higher activity than that usually measured for catalytic materials of similar composition, thus representing a promising alternative for oxidation processes.
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Affiliation(s)
- Kawthar Frikha
- Université de Haute-alsace, CNRS, IS2M UMR 7361, F-68100 Mulhouse, France.
- Université de Strasbourg, F-67000 Strasbourg, France.
- Laboratoire de Chimie Industrielle, Ecole Nationale d'Ingénieurs de Sfax, Université de Sfax, Sfax BP1173, Tunisie.
| | - Lionel Limousy
- Université de Haute-alsace, CNRS, IS2M UMR 7361, F-68100 Mulhouse, France.
- Université de Strasbourg, F-67000 Strasbourg, France.
| | - Jamel Bouaziz
- Laboratoire de Chimie Industrielle, Ecole Nationale d'Ingénieurs de Sfax, Université de Sfax, Sfax BP1173, Tunisie.
| | - Kamel Chaari
- Laboratoire de Chimie Industrielle, Ecole Nationale d'Ingénieurs de Sfax, Université de Sfax, Sfax BP1173, Tunisie.
| | - Ludovic Josien
- Université de Haute-alsace, CNRS, IS2M UMR 7361, F-68100 Mulhouse, France.
- Université de Strasbourg, F-67000 Strasbourg, France.
| | - Habiba Nouali
- Université de Haute-alsace, CNRS, IS2M UMR 7361, F-68100 Mulhouse, France.
- Université de Strasbourg, F-67000 Strasbourg, France.
| | - Laure Michelin
- Université de Haute-alsace, CNRS, IS2M UMR 7361, F-68100 Mulhouse, France.
- Université de Strasbourg, F-67000 Strasbourg, France.
| | - Loic Vidal
- Université de Haute-alsace, CNRS, IS2M UMR 7361, F-68100 Mulhouse, France.
- Université de Strasbourg, F-67000 Strasbourg, France.
| | - Samar Hajjar-Garreau
- Université de Haute-alsace, CNRS, IS2M UMR 7361, F-68100 Mulhouse, France.
- Université de Strasbourg, F-67000 Strasbourg, France.
| | - Simona Bennici
- Université de Haute-alsace, CNRS, IS2M UMR 7361, F-68100 Mulhouse, France.
- Université de Strasbourg, F-67000 Strasbourg, France.
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