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Atran AA, Hamdy MS. Hydrogenation of cyclohexene over single-atom Pt or Pd incorporated porous ceria nanoparticles under solvent-free conditions. RSC Adv 2024; 14:10644-10652. [PMID: 38567333 PMCID: PMC10985592 DOI: 10.1039/d4ra01432d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2024] [Accepted: 03/25/2024] [Indexed: 04/04/2024] Open
Abstract
In order to maximize the utilization of noble metals in catalysis, single atom of palladium (Pd) and platinum (Pt) were incorporated individually in the framework of porous ceria (CeO2) by using a one-step flash combustion method. Samples with different Pd and Pt loading (0.5, 1, 2.5, and 5 wt%) were prepared and examined by using different analysis techniques such as XRD, ICP, N2 sorption measurements, SEM, HR-TEM, and XPS. The characterization data confirms the formation of zero-state single-atom Pt and Pd (with possible formation of Pd nanoparticles with a size less than 5 nm) incorporated onto the three-dimensional porous ceria structure. The catalytic activity of the synthesized materials was studied in the cyclohexene reduction to cyclohexane at 393 K and 3 atm of pure hydrogen (H2) gas as a model reaction. The obtained results demonstrated that the conversion percentage of cyclohexene is increasing with Pd or Pt loading. The best cyclohexene conversion, 21% and 29%, was achieved over the sample that contains 5 wt% of Pt and Pd, respectively. The collected catalytic data fit the zero-order reaction model, and the rate constant of each catalyst was determined. The catalytic experiments of the most-performed catalysts were repeated five times and the obtained loss in activity was insignificant.
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Affiliation(s)
- Amal A Atran
- Catalysis Research Group (CRG), Department of Chemistry, College of Science, King Khalid University P.O Box 9004 Abha 61413 Saudi Arabia
| | - Mohamed S Hamdy
- Catalysis Research Group (CRG), Department of Chemistry, College of Science, King Khalid University P.O Box 9004 Abha 61413 Saudi Arabia
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2
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Highly recyclable palladium ion substituted TiO2 as the versatile ligand-free catalyst for the selective oxidation of alcohols and the reduction of nitroarenes. J CHEM SCI 2022. [DOI: 10.1007/s12039-022-02089-3] [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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3
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Stadnichenko AI, Simanenko AA, Slavinskaya EM, Fedorova EA, Stonkus OA, Romanenko AV, Boronin AI. STUDY OF Pt/Ce-Mn-Ox CATALYSTS FOR THE LOW-TEMPERATURE CO OXIDATION REACTION. J STRUCT CHEM+ 2022. [DOI: 10.1134/s0022476622080017] [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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4
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Li F, Zhao B, Tan Y, Chen W, Tian M. Preparation of Al 2O 3–CeO 2 by Hydrothermal Method Supporting Copper Oxide for the Catalytic Oxidation of CO and C 3H 8. Ind Eng Chem Res 2022. [DOI: 10.1021/acs.iecr.1c03906] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Fan Li
- College of Chemistry and Chemical Engineering, Guizhou University, Guiyang 550025, Guizhou China
| | - Bing Zhao
- College of Chemistry and Chemical Engineering, Guizhou University, Guiyang 550025, Guizhou China
| | - Yifeng Tan
- College of Chemistry and Chemical Engineering, Guizhou University, Guiyang 550025, Guizhou China
| | - Wenlin Chen
- College of Chemistry and Chemical Engineering, Guizhou University, Guiyang 550025, Guizhou China
| | - Mengkui Tian
- College of Chemistry and Chemical Engineering, Guizhou University, Guiyang 550025, Guizhou China
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Pentyala P, Singhania V, Duggineni VK, Deshpande PA. Machine learning-assisted DFT reveals key descriptors governing the vacancy formation energy in Pd-substituted multicomponent ceria. MOLECULAR CATALYSIS 2022. [DOI: 10.1016/j.mcat.2022.112190] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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6
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Roach JM, Manukyan KV, Majumdar A, Dede S, Oliver AG, Burns PC, Aprahamian A. Hyperstoichiometric Uranium Dioxides: Rapid Synthesis and Irradiation-Induced Structural Changes. Inorg Chem 2021; 60:18938-18949. [PMID: 34889599 DOI: 10.1021/acs.inorgchem.1c02736] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Uranium dioxide (UO2), the primary fuel for commercial nuclear reactors, incorporates excess oxygen forming a series of hyperstoichiometric oxides. Thin layers of these oxides, such as UO2.12, form readily on the fuel surface and influence its properties, performance, and potentially geologic disposal. This work reports a rapid and straightforward combustion process in uranyl nitrate-glycine-water solutions to prepare UO2.12 nanomaterials and thin films. We also report on the investigation of the structural changes induced in the material by irradiation. Despite the simple processing aspects, the combustion synthesis of UO2.12 has a sophisticated chemical mechanism involving several exothermic steps. Raman spectroscopy and single-crystal X-ray diffraction (XRD) measurements reveal the formation of a complex compound containing the uranyl moiety, glycine, H2O, and NO3- groups in reactive solutions and dried combustion precursors. Combustion diagnostic methods, gas-phase mass spectroscopy, differential scanning calorimetry (DSC), and extracted activation energies from DSC measurements show that the rate-limiting step of the process is the reaction of ammonia with nitrogen oxides formed from the decomposition of glycine and uranyl nitrate, respectively. However, the exothermic decomposition of the complex compound determines the maximum temperature of the process. In situ transmission electron microscopy (TEM) imaging and electron diffraction measurements show that the decomposition of the complex compound directly produces UO2. The incorporation of oxygen at the cooling stage of the combustion process is responsible for the formation of UO2.12. Spin coating of the solutions and brief annealing at 670 K allow the deposition of uniform films of UO2.12 with thicknesses up to 300 nm on an aluminum substrate. Irradiation of films with Ar2+ ions (1.7 MeV energy, a fluence of up to 1 × 1017 ions/cm2) shows unusual defect-simulated grain growth and enhanced chemical mixing of UO2.12 with the substrate due to the high uranium ion diffusion in films. The method described in this work allows the preparation of actinide oxide targets for fundamental nuclear science research and studies associated with stockpile stewardship.
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Affiliation(s)
- Jordan M Roach
- Department of Chemistry and Biochemistry, University of Notre Dame, Notre Dame, Indiana 46556, United States
| | - Khachatur V Manukyan
- Nuclear Science Laboratory, Department of Physics, University of Notre Dame, Notre Dame, Indiana 46556, United States
| | - Ashabari Majumdar
- Nuclear Science Laboratory, Department of Physics, University of Notre Dame, Notre Dame, Indiana 46556, United States
| | - Stefania Dede
- Nuclear Science Laboratory, Department of Physics, University of Notre Dame, Notre Dame, Indiana 46556, United States.,Cyclotron Institute, Texas A&M University, College Station, Texas 77843, United States
| | - Allen G Oliver
- Department of Chemistry and Biochemistry, University of Notre Dame, Notre Dame, Indiana 46556, United States
| | - Peter C Burns
- Department of Chemistry and Biochemistry, University of Notre Dame, Notre Dame, Indiana 46556, United States.,Department of Civil & Environmental Engineering & Earth Sciences, University of Notre Dame, Notre Dame, Indiana 46556, United States
| | - Ani Aprahamian
- Nuclear Science Laboratory, Department of Physics, University of Notre Dame, Notre Dame, Indiana 46556, United States.,A. Alikhanyan National Science Laboratory of Armenia, 2 Alikhanyan Brothers, 0036 Yerevan, Armenia
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Ikemoto S, Muratsugu S, Koitaya T, Tada M. Chromium Oxides as Structural Modulators of Rhodium Dispersion on Ceria to Generate Active Sites for NO Reduction. ACS Catal 2021. [DOI: 10.1021/acscatal.1c03807] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Satoru Ikemoto
- Department of Chemistry, Graduate School of Science, Nagoya University, Furo-cho, Chikusa-ku, Nagoya, Aichi 464-8602, Japan
| | - Satoshi Muratsugu
- Department of Chemistry, Graduate School of Science, Nagoya University, Furo-cho, Chikusa-ku, Nagoya, Aichi 464-8602, Japan
- Japan Science and Technology Agency (JST), Precursory Research for Embryonic Science and Technology (PRESTO), 4-1-8 Honcho, Kawaguchi 332-0012, Japan
| | - Takanori Koitaya
- Japan Science and Technology Agency (JST), Precursory Research for Embryonic Science and Technology (PRESTO), 4-1-8 Honcho, Kawaguchi 332-0012, Japan
- Department of Materials Molecular Science, Institute for Molecular Science, Myodaiji-cho, Okazaki, Aichi 444-8585, Japan
| | - Mizuki Tada
- Department of Chemistry, Graduate School of Science, Nagoya University, Furo-cho, Chikusa-ku, Nagoya, Aichi 464-8602, Japan
- Research Center for Materials Science (RCMS), Integrated Research Consortium on Chemical Sciences (IRCCS), and Institute for Advanced Study, Nagoya University, Furo-cho, Chikusa-ku, Nagoya, Aichi 464-8602, Japan
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Prasanna, Bhat SK, Usha KM, Hegde MS. Ligand and Base Free Synthesis of Biaryls from Aryl Halides in Aqueous Media with Recyclable Ti0.97Pd0.03O1.97 Catalyst. Catal Letters 2021. [DOI: 10.1007/s10562-021-03560-5] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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9
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Prasanna, Usha KM, Hegde MS. Highly recyclable Ti 0.97Ni 0.03O 1.97 catalyst coated on cordierite monolith for efficient transformation of arylboronic acids to phenols and reduction of 4-nitrophenol. Dalton Trans 2021; 50:14223-14234. [PMID: 34550140 DOI: 10.1039/d1dt02293h] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A stable Ni2+ substituted TiO2 catalyst (Ti0.97Ni0.03O1.97) has been synthesized by a solution combustion method with an average crystallite size of 7.5 nm. Ti1-xNixO2-x (x = 0.01-0.06) crystallizes in the TiO2 anatase structure with Ni2+ substituted in Ti4+ ion sites and Ni taking a nearly square planar geometry. This catalyst is found to be highly active in the transformation of diverse arylboronic acids to the corresponding phenols. The catalyst coated cordierite monolith can even be recycled for up to 20 cycles with a cumulative TOF of 1.8 × 105 h-1. In scale-up reactions, various phenols are synthesized by employing a single cordierite monolith. It also shows high performance in the reduction of 4-nitrophenol.
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Affiliation(s)
- Prasanna
- Talent Development Centre, Indian Institute of Science Challakere Campus at Kudapura, Chitradurga, Karnataka 577536, India. .,Department of Chemistry, University College Mangalore, Karnataka 575001, India
| | - K M Usha
- Department of Chemistry, University College Mangalore, Karnataka 575001, India
| | - M S Hegde
- Talent Development Centre, Indian Institute of Science Challakere Campus at Kudapura, Chitradurga, Karnataka 577536, India.
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Majumdar A, Manukyan KV, Dede S, Roach JM, Robertson D, Burns PC, Aprahamian A. Irradiation-Driven Restructuring of UO 2 Thin Films: Amorphization and Crystallization. ACS APPLIED MATERIALS & INTERFACES 2021; 13:35153-35164. [PMID: 34270887 DOI: 10.1021/acsami.1c08682] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Combustion synthesis in uranyl nitrate-acetylacetone-2-methoxyethanol solutions was used to deposit thin UO2 films on aluminum substrates to investigate the irradiation-induced restructuring processes. Thermal analysis revealed that the combustion reactions in these solutions are initiated at ∼160 °C. The heat released during the process and the subsequent brief annealing at 400 °C allow the deposition of polycrystalline films with 5-10 nm UO2 grains. The use of multiple deposition cycles enables tuning of the film thicknesses in the 35-260 nm range. Irradiation with Ar2+ ions (1.7 MeV energy and a fluence of up to 1 × 1017 ions/cm2) is utilized to generate a uniform distribution of atomic displacements within the films. X-ray fluorescence (XRF) and alpha-particle emission spectroscopy showed that the films were stable under irradiation and did not undergo sputtering degradation. X-ray photoelectron spectroscopy (XPS) showed that the stoichiometry and uranium ionic concentrations remain stable during irradiation. The high-resolution electron microscopy imaging and electron diffraction analysis demonstrated that at the early stages of irradiation (below 1 × 1016 ion/cm2) UO2 films show complete amorphization and beam-induced densification (sintering), resulting in a pore-free disordered film. Prolonged irradiation (5 × 1016 ion/cm2) is shown to trigger a crystallization process at the surface of the films that moves toward the UO2/Al interface, converting the entire amorphous material into a highly crystalline film. This work reports on an entirely different radiation-induced restructuring of the nanoscale UO2 compared to the coarse-grained counterpart. The preparation of thin UO2 films deposited on Al substrates fills an area of national need within the stockpile stewardship program of the National Nuclear Security Administration and fundamental research with actinides. The method reported in this work produces pure, robust, and uniform thin-film actinide targets for nuclear science measurements.
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Affiliation(s)
- Ashabari Majumdar
- Nuclear Science Laboratory, Department of Physics, University of Notre Dame, Notre Dame, Indiana 46556, United States
| | - Khachatur V Manukyan
- Nuclear Science Laboratory, Department of Physics, University of Notre Dame, Notre Dame, Indiana 46556, United States
| | - Stefania Dede
- Nuclear Science Laboratory, Department of Physics, University of Notre Dame, Notre Dame, Indiana 46556, United States
- Cyclotron Institute, Texas A&M University, College Station, Texas 77843, United States
| | - Jordan M Roach
- Department of Chemistry and Biochemistry, University of Notre Dame, Notre Dame, Indiana 46556, United States
| | - Daniel Robertson
- Nuclear Science Laboratory, Department of Physics, University of Notre Dame, Notre Dame, Indiana 46556, United States
| | - Peter C Burns
- Department of Chemistry and Biochemistry, University of Notre Dame, Notre Dame, Indiana 46556, United States
- Department of Civil and Environmental Engineering and Earth Sciences, University of Notre Dame, Notre Dame, Indiana 46556, United States
| | - Ani Aprahamian
- Nuclear Science Laboratory, Department of Physics, University of Notre Dame, Notre Dame, Indiana 46556, United States
- A. Alikhanyan National Science Laboratory of Armenia, 2 Alikhanyan Brothers, 0036 Yerevan, Armenia
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11
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Influence of Titania Synthesized by Pulsed Laser Ablation on the State of Platinum during Ammonia Oxidation. APPLIED SCIENCES-BASEL 2020. [DOI: 10.3390/app10144699] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
A set of physicochemical methods, including X-ray photoelectron spectroscopy (XPS), X-ray diraction, electron microscopy and X-ray absorption spectroscopy, was applied to study Pt/TiO2 catalysts prepared by impregnation using a commercial TiO2-P25 support and a support produced by pulsed laser ablation in liquid (PLA). The Pt/TiO2-PLA catalysts showed increased thermal stability due to the localization of the highly dispersed platinum species at the intercrystalline boundaries of the support particles. In contrast, the Pt/TiO2-P25 catalysts were characterized by uniform distributionof the Pt species over the support. Analysis of Pt4f XP spectra shows that oxidized Pt2+ and Pt4+ species are formed in the Pt/TiO2-P25 catalysts, while the platinum oxidation state in the Pt/TiO2-PLA catalysts is lower due to stronger interaction of the active component with the support due to stronginteraction via Pt-O-Ti bonds. The Pt4f XP spectra of the samples after reaction show Pt2+ and metallic platinum, which is the catalytically active species. The study of the catalytic properties in ammonia oxidation showed that, unlike the catalysts prepared with a commercial support, the Pt/TiO2-PLA samples show higher stability during catalysis and significantly higher selectivity to N2 in a wide temperature range of 200–400 C.
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12
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Highly Crystalline Ordered Cu-dopedTiO2Nanostructure by Paper Templated Method: Hydrogen Production and Dye Degradation under Natural Sunlight. JOURNAL OF COMPOSITES SCIENCE 2020. [DOI: 10.3390/jcs4020048] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
A highly crystalline ordered Cu-TiO2 nanostructure was synthesized using a simple paper template method using cupric nitrate and titanium isopropoxide as precursors. The structural study by XRD confirmed the formation of highly crystalline anatase phase of Cu-TiO2. The broad diffraction peaks of Cu-TiO2 exhibit the nanocrystalline nature of the product. The optical study by UV-DRS indicated the red shift in absorption wavelength with an increase in Cu doping, i.e., towards the visible region. The FE-SEM and FE-TEM study validated the formation of spherical shaped nanoparticles of Cu-TiO2 having sizes in the range of 20–30 nm. Considering the absorption in the visible region, the photocatalytic study was performed for water splitting and rhodamine-B (RhB) dye degradation under natural sunlight. The 2% Cu-doped TiO2 showed the highest photocatalytic hydrogen evolution, i.e., 1400 µmol·g−1·h−1 from water, among the prepared compositions. The photocatalytic performance of Cu-TiO2 conferred complete degradation of RhB dye within 40 min. The higher activity in both cases was attributed to the formation of highly crystalline ordered nanostructure of Cu-doped TiO2. This synthesis approach has potential to prepare other highly crystalline ordered nanostructured semiconductors for different applications.
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Ikemoto S, Huang X, Muratsugu S, Nagase S, Koitaya T, Matsui H, Yokota GI, Sudoh T, Hashimoto A, Tan Y, Yamamoto S, Tang J, Matsuda I, Yoshinobu J, Yokoyama T, Kusaka S, Matsuda R, Tada M. Reversible low-temperature redox activity and selective oxidation catalysis derived from the concerted activation of multiple metal species on Cr and Rh-incorporated ceria catalysts. Phys Chem Chem Phys 2019; 21:20868-20877. [PMID: 31517357 DOI: 10.1039/c9cp04625a] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The ceria-based catalyst incorporated with Cr and a trace amount of Rh (Cr0.19Rh0.06CeOz) was prepared and the reversible redox performances and oxidation catalysis of CO and alcohol derivatives with O2 at low temperatures (<373 K) were investigated. In situ X-ray absorption fine structure (XAFS), ambient-pressure X-ray photoelectron spectroscopy (AP-XPS), high angle annular dark-field scanning transmission electron microscopy (HAADF-STEM)-EDS/EELS and temperature-programmed reduction/oxidation (TPR/TPO) revealed the structures and redox mechanisms of three metals in Cr0.19Rh0.06CeOz: dispersed Rh3+δ species (<1 nm) and Cr6-γO3-x nanoparticles (∼1 nm) supported on CeO2 in Cr0.19Rh0.06CeOz were transformed to Rh nanoclusters, Cr(OH)3 species and CeO2-x with two Ce3+-oxide layers at the surface in a concerted activation manner of the three metal species with H2.
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Affiliation(s)
- Satoru Ikemoto
- Department of Chemistry, Graduate School of Science, Nagoya University, Furo-cho, Chikusa-ku, Nagoya, Aichi 464-8602, Japan.
| | - Xiubing Huang
- Research Center for Materials Science (RCMS) & Integrated Research Consortium on Chemical Sciences (IRCCS), Nagoya University, Furo-cho, Chikusa-ku, Nagoya, Aichi 464-8602, Japan.
| | - Satoshi Muratsugu
- Department of Chemistry, Graduate School of Science, Nagoya University, Furo-cho, Chikusa-ku, Nagoya, Aichi 464-8602, Japan. and Japan Science and Technology Agency (JST), Precursory Research for Embryonic Science and Technology (PRESTO), 4-1-8 Honcho, Kawaguchi 332-0012, Japan
| | - Shoko Nagase
- Department of Chemistry, Graduate School of Science, Nagoya University, Furo-cho, Chikusa-ku, Nagoya, Aichi 464-8602, Japan.
| | - Takanori Koitaya
- Japan Science and Technology Agency (JST), Precursory Research for Embryonic Science and Technology (PRESTO), 4-1-8 Honcho, Kawaguchi 332-0012, Japan and Department of Materials Molecular Science, Institute for Molecular Science, Myodaiji-cho, Okazaki, Aichi 444-8585, Japan
| | - Hirosuke Matsui
- Department of Chemistry, Graduate School of Science, Nagoya University, Furo-cho, Chikusa-ku, Nagoya, Aichi 464-8602, Japan.
| | - Gen-Ichi Yokota
- Department of Chemistry, Graduate School of Science, Nagoya University, Furo-cho, Chikusa-ku, Nagoya, Aichi 464-8602, Japan.
| | - Takatoshi Sudoh
- Department of Chemistry, Graduate School of Science, Nagoya University, Furo-cho, Chikusa-ku, Nagoya, Aichi 464-8602, Japan.
| | - Ayako Hashimoto
- Japan Science and Technology Agency (JST), Precursory Research for Embryonic Science and Technology (PRESTO), 4-1-8 Honcho, Kawaguchi 332-0012, Japan and In-situ Characterization Technique Development Group, National Institute for Materials Science, 1-2-1 Sengen, Tsukuba 305-0047, Japan
| | - Yuanyuan Tan
- Research Center for Materials Science (RCMS) & Integrated Research Consortium on Chemical Sciences (IRCCS), Nagoya University, Furo-cho, Chikusa-ku, Nagoya, Aichi 464-8602, Japan.
| | - Susumu Yamamoto
- The Institute for Solid State Physics, The University of Tokyo, 5-1-5, Kashiwanoha, Kashiwa, Chiba 277-8581, Japan
| | - Jiayi Tang
- Graduate School of Engineering, University of Hyogo, 2167, Shosha, Himeji, Hyogo 671-2280, Japan
| | - Iwao Matsuda
- The Institute for Solid State Physics, The University of Tokyo, 5-1-5, Kashiwanoha, Kashiwa, Chiba 277-8581, Japan
| | - Jun Yoshinobu
- The Institute for Solid State Physics, The University of Tokyo, 5-1-5, Kashiwanoha, Kashiwa, Chiba 277-8581, Japan
| | - Toshihiko Yokoyama
- Department of Materials Molecular Science, Institute for Molecular Science, Myodaiji-cho, Okazaki, Aichi 444-8585, Japan
| | - Shinpei Kusaka
- Department of Chemistry and Biotechnology, Graduate School of Engineering, Nagoya University, Furo-cho, Chikusa-ku, Nagoya, Aichi 464-8602, Japan
| | - Ryotaro Matsuda
- Department of Chemistry and Biotechnology, Graduate School of Engineering, Nagoya University, Furo-cho, Chikusa-ku, Nagoya, Aichi 464-8602, Japan
| | - Mizuki Tada
- Department of Chemistry, Graduate School of Science, Nagoya University, Furo-cho, Chikusa-ku, Nagoya, Aichi 464-8602, Japan. and Research Center for Materials Science (RCMS) & Integrated Research Consortium on Chemical Sciences (IRCCS), Nagoya University, Furo-cho, Chikusa-ku, Nagoya, Aichi 464-8602, Japan.
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Galani SM, Giri AK, Ghosh SC, Panda AB. Development of Easily Separable ZnO-Supported Au Nanocatalyst for the Oxidative Esterification of Alcohols and Reduction of Nitroarenes. ChemistrySelect 2018. [DOI: 10.1002/slct.201801730] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Affiliation(s)
- Sunil M. Galani
- Natural Products and Green Chemistry Division; Central Salt and Marine Chemicals Research Institute (CSIR-CSMCRI), G.B. Marg; Bhavnagar-364002, Gujarat India
- Academy of Scientific and Innovative Research; Central Salt and Marine Chemicals Research Institute (CSIR-CSMCRI), G.B. Marg; Bhavnagar-364002, Gujarat India
| | - Arnab K. Giri
- Inorganic Materials and Catalysis Division; Central Salt and Marine Chemicals Research Institute (CSIR-CSMCRI), G.B. Marg; Bhavnagar-364002, Gujarat India
| | - Subhash C. Ghosh
- Natural Products and Green Chemistry Division; Central Salt and Marine Chemicals Research Institute (CSIR-CSMCRI), G.B. Marg; Bhavnagar-364002, Gujarat India
- Academy of Scientific and Innovative Research; Central Salt and Marine Chemicals Research Institute (CSIR-CSMCRI), G.B. Marg; Bhavnagar-364002, Gujarat India
| | - Asit B. Panda
- Inorganic Materials and Catalysis Division; Central Salt and Marine Chemicals Research Institute (CSIR-CSMCRI), G.B. Marg; Bhavnagar-364002, Gujarat India
- Academy of Scientific and Innovative Research; Central Salt and Marine Chemicals Research Institute (CSIR-CSMCRI), G.B. Marg; Bhavnagar-364002, Gujarat India
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The Current Status of Heterogeneous Palladium Catalysed Heck and Suzuki Cross-Coupling Reactions. Molecules 2018; 23:molecules23071676. [PMID: 29996491 PMCID: PMC6099673 DOI: 10.3390/molecules23071676] [Citation(s) in RCA: 85] [Impact Index Per Article: 14.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2018] [Revised: 06/22/2018] [Accepted: 06/23/2018] [Indexed: 12/20/2022] Open
Abstract
In the last 30 years, C–C cross coupling reactions have become a reliable technique in organic synthesis due their versatility and efficiency. While drawbacks have been experienced on an industrial scale with the use of homogenous systems, many attempts have been made to facilitate a heterogeneous renaissance. Thus, this review gives an overview of the current status of the use of heterogeneous catalysts particularly in Suzuki and Heck reactions. Most recent developments focus on palladium immobilised or supported on various classes of supports, thus this review highlights and discuss contributions of the last decade.
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Ponnusamy R, Gangan A, Chakraborty B, Late DJ, Rout CS. Improved Nonenzymatic Glucose Sensing Properties of Pd/MnO2 Nanosheets: Synthesis by Facile Microwave-Assisted Route and Theoretical Insight from Quantum Simulations. J Phys Chem B 2018; 122:7636-7646. [DOI: 10.1021/acs.jpcb.8b01611] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Rajeswari Ponnusamy
- Centre for Nano and Material Sciences, Jain University, Jain Global Campus, Ramanagaram, Bengaluru 562112, India
| | - Abhijeet Gangan
- High Pressure and Synchrotron Radiation Physics Division, Bhabha Atomic Research Centre, Trombay, Mumbai 400085, India
| | - Brahmananda Chakraborty
- High Pressure and Synchrotron Radiation Physics Division, Bhabha Atomic Research Centre, Trombay, Mumbai 400085, India
| | - Dattatray J. Late
- Physical and Materials Chemistry Division, CSIR-National Chemical Laboratory, Dr. Homi Bhabha Road, Pashan, Pune 411008, India
| | - Chandra Sekhar Rout
- Centre for Nano and Material Sciences, Jain University, Jain Global Campus, Ramanagaram, Bengaluru 562112, India
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Mishra PK, Kumar R, Rai PK. Surfactant-free one-pot synthesis of CeO 2, TiO 2 and Ti@Ce oxide nanoparticles for the ultrafast removal of Cr(vi) from aqueous media. NANOSCALE 2018; 10:7257-7269. [PMID: 29632915 DOI: 10.1039/c7nr09563e] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Cerium oxide (CeO2), titanium oxide (TiO2) and titanium oxide impregnated with cerium oxide (Ti@Ce oxide) nanoparticles were synthesized using a simple one-pot surfactant-free method. The synthesized adsorbents were tested against the removal of Cr(vi) from aqueous medium. Comprehensive characterization methods like BET, XRD, SEM, EDAX, HR-TEM, SAED, HR-XPS and FT-IR were performed at different stages of the adsorption process and synthesis. A N2-BET study revealed the large surface area (268 m2 g-1) and pore size (6.8 nm) of CeO2 nanoparticles, which decreased after impregnation of titania. An XRD study demonstrated the phase transformation of TiO2 from the anatase phase to the rutile phase after the impregnation with CeO2 by lowering the phase transformation temperature from >550 °C to 400 °C. Ti0.3@Ce0.7 oxide nanoparticles showed 81% removal of Cr(vi) within 2.5 min of initiating the adsorption process while more than 92% removal of Cr(vi) was achieved within 10 min of adsorption. A HR-XPS study indicated the dual oxidation states of ceria and titania metals, which helped to convert the more toxic Cr(vi) ions to less toxic Cr(iii) ions during the adsorption process. The adsorption pattern depicted the monolayer behavior of Cr(vi) obeying the Redlich-Peterson isotherm and followed pseudo second-order kinetics. An intraparticle diffusion model disclosed the surface and pore resistance diffusion of Cr(vi) on the surface of adsorbents.
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Affiliation(s)
- Prashant Kumar Mishra
- Environment Safety Group, Centre for Fire, Explosive and Environment Safety, Timarpur, Delhi-110054, India
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18
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Liu JX, Su Y, Filot IAW, Hensen EJM. A Linear Scaling Relation for CO Oxidation on CeO 2-Supported Pd. J Am Chem Soc 2018; 140:4580-4587. [PMID: 29498273 PMCID: PMC5890314 DOI: 10.1021/jacs.7b13624] [Citation(s) in RCA: 77] [Impact Index Per Article: 12.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2017] [Indexed: 11/28/2022]
Abstract
Resolving the structure and composition of supported nanoparticles under reaction conditions remains a challenge in heterogeneous catalysis. Advanced configurational sampling methods at the density functional theory level are used to identify stable structures of a Pd8 cluster on ceria (CeO2) in the absence and presence of O2. A Monte Carlo method in the Gibbs ensemble predicts Pd-oxide particles to be stable on CeO2 during CO oxidation. Computed potential energy diagrams for CO oxidation reaction cycles are used as input for microkinetics simulations. Pd-oxide exhibits a much higher CO oxidation activity than metallic Pd on CeO2. This work presents for the first time a scaling relation for a CeO2-supported metal nanoparticle catalyst in CO oxidation: a higher oxidation degree of the Pd cluster weakens CO binding and facilitates the rate-determining CO oxidation step with a ceria O atom. Our approach provides a new strategy to model supported nanoparticle catalysts.
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Affiliation(s)
- Jin-Xun Liu
- Inorganic Materials Chemistry, Department
of Chemistry and Chemical Engineering, Eindhoven
University of Technology, Eindhoven, 5600 MB, Netherlands
| | - Yaqiong Su
- Inorganic Materials Chemistry, Department
of Chemistry and Chemical Engineering, Eindhoven
University of Technology, Eindhoven, 5600 MB, Netherlands
| | - Ivo A. W. Filot
- Inorganic Materials Chemistry, Department
of Chemistry and Chemical Engineering, Eindhoven
University of Technology, Eindhoven, 5600 MB, Netherlands
| | - Emiel J. M. Hensen
- Inorganic Materials Chemistry, Department
of Chemistry and Chemical Engineering, Eindhoven
University of Technology, Eindhoven, 5600 MB, Netherlands
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19
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Rao C, Peng C, Peng H, Zhang L, Liu W, Wang X, Zhang N, Wu P. In Situ Embedded Pseudo Pd-Sn Solid Solution in Micropores Silica with Remarkable Catalytic Performance for CO and Propane Oxidation. ACS APPLIED MATERIALS & INTERFACES 2018; 10:9220-9224. [PMID: 29498506 DOI: 10.1021/acsami.8b01450] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Most of the industrial and environmental catalytic reactions are operated at high temperature for a long time, and the sintering of the active centers is the main factor leading to catalysts deactivation, especially for noble metal catalysts. Herein we develop a dual confinement (enhanced metal-oxide interaction and the porous shell confinement) strategy to prepare Pd-Sn pseudo solid solution and in situ embedded in microporous silica for the first time and showed superior catalytic performance for CO and propane total oxidation (two main vehicle emission gases), even stored more than 640 days.
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Affiliation(s)
- Cheng Rao
- Institute of Applied Chemistry, College of Chemistry , Nanchang University , 999 Xuefu Road , Nanchang , Jiangxi 330031 , China
| | - Cheng Peng
- Institute of Applied Chemistry, College of Chemistry , Nanchang University , 999 Xuefu Road , Nanchang , Jiangxi 330031 , China
| | - Honggen Peng
- Institute of Applied Chemistry, College of Chemistry , Nanchang University , 999 Xuefu Road , Nanchang , Jiangxi 330031 , China
- Chemical Sciences Division , Oak Ridge National Laboratory , Oak Ridge , Tennessee 37831 , United States
| | - Li Zhang
- Institute of Applied Chemistry, College of Chemistry , Nanchang University , 999 Xuefu Road , Nanchang , Jiangxi 330031 , China
| | - Wenming Liu
- Institute of Applied Chemistry, College of Chemistry , Nanchang University , 999 Xuefu Road , Nanchang , Jiangxi 330031 , China
| | - Xiang Wang
- Institute of Applied Chemistry, College of Chemistry , Nanchang University , 999 Xuefu Road , Nanchang , Jiangxi 330031 , China
| | - Ning Zhang
- Institute of Applied Chemistry, College of Chemistry , Nanchang University , 999 Xuefu Road , Nanchang , Jiangxi 330031 , China
| | - Peng Wu
- Shanghai Key Laboratory of Green Chemistry and Chemical Processes, Department of Chemistry and Molecular Engineering , East China Normal University , North Zhongshan Road 3663 , 200062 Shanghai , China
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20
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Zhou G, Li P, Ma Q, Tian Z, Liu Y. Density Functional Theory plus Hubbard U Study of the Segregation of Pt to the CeO 2- x Grain Boundary. NANO LETTERS 2018; 18:1668-1677. [PMID: 29446958 DOI: 10.1021/acs.nanolett.7b04680] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Grain boundaries (GBs) can be used as traps for solute atoms and defects, and the interaction between segregants and GBs is crucial for understanding the properties of nanocrystalline materials. In this study, we have systematically investigated the Pt segregation and Pt-oxygen vacancies interaction at the ∑3 (111) GB in ceria (CeO2). The Pt atom has a stronger tendency to segregate to the ∑3 (111) GB than to the (111) and (110) free surfaces, but the tendency is weaker than to (112) and (100). Lattice distortion plays a dominant role in Pt segregation. At the Pt-segregated-GB (Pt@GB), oxygen vacancies prefer to form spontaneously near Pt in the GB region. However, at the pristine GB, oxygen vacancies can only form under O-poor conditions. Thus, Pt segregation to the GB promotes the formation of oxygen vacancies, and their strong interactions enhance the interfacial cohesion. We propose that GBs fabricated close to the surfaces of nanocrystalline ceria can trap Pt from inside the grains or other types of surface, resulting in the suppression of the accumulation of Pt on the surface under redox reactions, especially under O-poor conditions.
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Affiliation(s)
| | | | | | | | - Ying Liu
- State Key Lab of Nonferrous Metals & Processes , General Research Institute for Nonferrous Metal , Beijing 100088 , China
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21
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Rahman MM, Alam MM, Asiri AM. Selective hydrazine sensor fabrication with facile low-dimensional Fe2O3/CeO2 nanocubes. NEW J CHEM 2018. [DOI: 10.1039/c8nj01750f] [Citation(s) in RCA: 65] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Here, the binary-doped metal oxides of Fe2O3/CeO2 nanocubes were prepared using reliable hydrothermal process, which is applied to fabricate an efficient and selective hydrazine chemical sensor shows good analytical sensing performances as well as validated the sensor prove with the environmental and extracted real samples.
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Affiliation(s)
- Mohammed M. Rahman
- Chemistry Department
- King Abdulaziz University
- Faculty of Science
- Jeddah 21589
- Saudi Arabia
| | - M. M. Alam
- Department of Chemical Engineering and Polymer Science
- Shahjalal University of Science and Technology
- Sylhet 3100
- Bangladesh
| | - Abdullah M. Asiri
- Chemistry Department
- King Abdulaziz University
- Faculty of Science
- Jeddah 21589
- Saudi Arabia
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22
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Jodłowski PJ, Jędrzejczyk RJ, Chlebda DK, Dziedzicka A, Kuterasiński Ł, Gancarczyk A, Sitarz M. Non-Noble Metal Oxide Catalysts for Methane Catalytic Combustion: Sonochemical Synthesis and Characterisation. NANOMATERIALS 2017; 7:nano7070174. [PMID: 28686190 PMCID: PMC5535240 DOI: 10.3390/nano7070174] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/09/2017] [Revised: 06/29/2017] [Accepted: 07/01/2017] [Indexed: 11/19/2022]
Abstract
The aim of this study was to obtain nanocrystalline mixed metal-oxide–ZrO2 catalysts via a sonochemically-induced preparation method. The effect of a stabiliser’s addition on the catalyst parameters was investigated by several characterisation methods including X-ray Diffraction (XRD), nitrogen adsorption, X-ray fluorescence (XRF), scanning electron microscopy (SEM) equipped with energy dispersive X-ray spectrometer (EDS), transmission electron microscopy (TEM) and µRaman. The sonochemical preparation method allowed us to manufacture the catalysts with uniformly dispersed metal-oxide nanoparticles at the support surface. The catalytic activity was tested in a methane combustion reaction. The activity of the catalysts prepared by the sonochemical method was higher than that of the reference catalysts prepared by the incipient wetness method without ultrasonic irradiation. The cobalt and chromium mixed zirconia catalysts revealed their high activities, which are comparable with those presented in the literature.
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Affiliation(s)
- Przemysław J Jodłowski
- Faculty of Chemical Engineering and Technology, Cracow University of Technology, Warszawska 24, 31-155 Kraków, Poland.
| | - Roman J Jędrzejczyk
- Malopolska Centre of Biotechnology, Jagiellonian University, Gronostajowa 7A, 30-387 Kraków, Poland.
| | - Damian K Chlebda
- Faculty of Chemistry, Jagiellonian University, Ingardena 3, 30-060 Kraków, Poland.
| | - Anna Dziedzicka
- Faculty of Chemical Engineering and Technology, Cracow University of Technology, Warszawska 24, 31-155 Kraków, Poland.
| | - Łukasz Kuterasiński
- Jerzy Haber Institute of Catalysis and Surface Chemistry, Polish Academy of Sciences, Niezapominajek 8, 30-239 Kraków, Poland.
| | - Anna Gancarczyk
- Institute of Chemical Engineering, Polish Academy of Sciences, Bałtycka 5, 44-100 Gliwice, Poland.
| | - Maciej Sitarz
- Faculty of Materials Science and Ceramics, AGH University of Science and Technology, al. Mickiewicza 30, 30-059 Kraków, Poland.
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23
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24
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Derevyannikova EA, Kardash TY, Kibis LS, Slavinskaya EM, Svetlichnyi VA, Stonkus OA, Ivanova AS, Boronin AI. The structure and catalytic properties of Rh-doped CeO2 catalysts. Phys Chem Chem Phys 2017; 19:31883-31897. [DOI: 10.1039/c7cp06573f] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The PDF analysis with TEM, XPS and Raman spectroscopy indicates the formation of homogenous RhxCe1−xO2−δ nanocrystalline solid solutions.
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Affiliation(s)
- E. A. Derevyannikova
- Boreskov Institute of Catalysis SB RAS
- Novosibirsk
- Russia
- Novosibirsk State University
- Novosibirsk
| | - T. Yu. Kardash
- Boreskov Institute of Catalysis SB RAS
- Novosibirsk
- Russia
- Novosibirsk State University
- Novosibirsk
| | - L. S. Kibis
- Boreskov Institute of Catalysis SB RAS
- Novosibirsk
- Russia
- Novosibirsk State University
- Novosibirsk
| | - E. M. Slavinskaya
- Boreskov Institute of Catalysis SB RAS
- Novosibirsk
- Russia
- Novosibirsk State University
- Novosibirsk
| | | | - O. A. Stonkus
- Boreskov Institute of Catalysis SB RAS
- Novosibirsk
- Russia
- Novosibirsk State University
- Novosibirsk
| | - A. S. Ivanova
- Boreskov Institute of Catalysis SB RAS
- Novosibirsk
- Russia
| | - A. I. Boronin
- Boreskov Institute of Catalysis SB RAS
- Novosibirsk
- Russia
- Novosibirsk State University
- Novosibirsk
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25
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Varma A, Mukasyan AS, Rogachev AS, Manukyan KV. Solution Combustion Synthesis of Nanoscale Materials. Chem Rev 2016; 116:14493-14586. [PMID: 27610827 DOI: 10.1021/acs.chemrev.6b00279] [Citation(s) in RCA: 273] [Impact Index Per Article: 34.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Solution combustion is an exciting phenomenon, which involves propagation of self-sustained exothermic reactions along an aqueous or sol-gel media. This process allows for the synthesis of a variety of nanoscale materials, including oxides, metals, alloys, and sulfides. This Review focuses on the analysis of new approaches and results in the field of solution combustion synthesis (SCS) obtained during recent years. Thermodynamics and kinetics of reactive solutions used in different chemical routes are considered, and the role of process parameters is discussed, emphasizing the chemical mechanisms that are responsible for rapid self-sustained combustion reactions. The basic principles for controlling the composition, structure, and nanostructure of SCS products, and routes to regulate the size and morphology of the nanoscale materials are also reviewed. Recently developed systems that lead to the formation of novel materials and unique structures (e.g., thin films and two-dimensional crystals) with unusual properties are outlined. To demonstrate the versatility of the approach, several application categories of SCS produced materials, such as for energy conversion and storage, optical devices, catalysts, and various important nanoceramics (e.g., bio-, electro-, magnetic), are discussed.
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Affiliation(s)
- Arvind Varma
- School of Chemical Engineering, Purdue University , West Lafayette, Indiana 47907, United States
| | | | - Alexander S Rogachev
- Institute of Structural Macrokinetics and Materials Science, RAS , Chernogolovka 142432, Russia.,National University of Science and Technology, MISiS , Moscow 119049, Russia
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26
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Pilger F, Testino A, Carino A, Proff C, Kambolis A, Cervellino A, Ludwig C. Size Control of Pt Clusters on CeO2 Nanoparticles via an Incorporation–Segregation Mechanism and Study of Segregation Kinetics. ACS Catal 2016. [DOI: 10.1021/acscatal.6b00934] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Frank Pilger
- Paul Scherrer Institut, Energy and Environment
Research Division, Villigen PSI CH-5232, Switzerland
- École Polytechnique Fédérale de Lausanne (EPFL), ENAC-IIE, CH-1015 Lausanne, Switzerland
| | - Andrea Testino
- Paul Scherrer Institut, Energy and Environment
Research Division, Villigen PSI CH-5232, Switzerland
| | - Agnese Carino
- Paul Scherrer Institut, Energy and Environment
Research Division, Villigen PSI CH-5232, Switzerland
- École Polytechnique Fédérale de Lausanne (EPFL), ENAC-IIE, CH-1015 Lausanne, Switzerland
| | - Christian Proff
- Paul Scherrer Institut, Energy and Environment
Research Division, Villigen PSI CH-5232, Switzerland
- Paul Scherrer Institut, Synchrotron Radiation
and Nanotechnology Research Department, Villigen PSI CH-5232, Switzerland
| | - Anastasios Kambolis
- Paul Scherrer Institut, Energy and Environment
Research Division, Villigen PSI CH-5232, Switzerland
- École Polytechnique Fédérale de Lausanne (EPFL), Institut des Sciences et Ingénierie Chimiques, CH-1015 Lausanne, Switzerland
| | - Antonio Cervellino
- Paul Scherrer Institut, Synchrotron Radiation
and Nanotechnology Research Department, Villigen PSI CH-5232, Switzerland
| | - Christian Ludwig
- Paul Scherrer Institut, Energy and Environment
Research Division, Villigen PSI CH-5232, Switzerland
- École Polytechnique Fédérale de Lausanne (EPFL), ENAC-IIE, CH-1015 Lausanne, Switzerland
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27
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Baidya T, Bera P, Kröcher O, Safonova O, Abdala PM, Gerke B, Pöttgen R, Priolkar KR, Mandal TK. Understanding the anomalous behavior of Vegard's law in Ce1−xMxO2 (M = Sn and Ti; 0 < x ≤ 0.5) solid solutions. Phys Chem Chem Phys 2016; 18:13974-83. [DOI: 10.1039/c6cp01525e] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A lattice parameter vs. ‘x’ curve in Ce1−xSnxO2 (x = 0.0–0.5) solid solutions is deviated from systematic linearity unlike in Ce1−xZrxO2 due to higher electronegativity of Sn.
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Affiliation(s)
- Tinku Baidya
- Solid State and Structural Chemistry Unit
- Indian Institute of Science
- Bangalore 560012
- India
- Paul Scherrer Institut
| | - Parthasarathi Bera
- Surface Engineering Division
- CSIR − National Aerospace Laboratories
- Bangalore 560017
- India
| | - Oliver Kröcher
- Paul Scherrer Institut
- 5253 Villigen
- Switzerland
- Ecole Polytechnique Fédérale de Lausanne (EPFL)
- 1015 Lausanne
| | | | - Paula M. Abdala
- SNBL
- European Synchrotron Radiation Facility
- 38043 Grenoble
- France
| | - Birgit Gerke
- Institut für Anorganische und Analytische Chemie
- Universität Münster
- 48149 Münster
- Germany
| | - Rainer Pöttgen
- Institut für Anorganische und Analytische Chemie
- Universität Münster
- 48149 Münster
- Germany
| | | | - Tapas Kumar Mandal
- Department of Chemistry and Centre of Nanotechnology
- Indian Institute of Technology Roorkee
- Roorkee 247667
- India
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28
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Tamiolakis I, Papadas IT, Spyridopoulos KC, Armatas GS. Mesoporous assembled structures of Cu2O and TiO2nanoparticles for highly efficient photocatalytic hydrogen generation from water. RSC Adv 2016. [DOI: 10.1039/c6ra08546f] [Citation(s) in RCA: 40] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Mesoporous assemblies of Cu2O/TiO2nanoparticle heterojunctions, which have a large internal surface area and narrow-sized pores, show highly efficient and robust photocatalytic hydrogen evolution from water using UV-visible light.
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Affiliation(s)
- I. Tamiolakis
- Department of Materials Science and Technology
- University of Crete
- 71003 Heraklion
- Greece
| | - I. T. Papadas
- Department of Materials Science and Technology
- University of Crete
- 71003 Heraklion
- Greece
| | - K. C. Spyridopoulos
- Department of Materials Science and Technology
- University of Crete
- 71003 Heraklion
- Greece
| | - G. S. Armatas
- Department of Materials Science and Technology
- University of Crete
- 71003 Heraklion
- Greece
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