1
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Negri C, Usberti N, Contaldo G, Bracconi M, Nova I, Maestri M, Tronconi E. Quantitative Kinetic Insights from Operando-UV/Vis Spectroscopy: An Application to NH 3-SCR of NOx on Cu-CHA Catalysts. Angew Chem Int Ed Engl 2024; 63:e202408328. [PMID: 38829015 DOI: 10.1002/anie.202408328] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2024] [Revised: 06/01/2024] [Accepted: 06/01/2024] [Indexed: 06/05/2024]
Abstract
We employ UV/Vis Diffuse Reflectance spectroscopy directly coupled with a packed bed flow reactor to extract quantitative kinetic information. We use as a show-case the CuII/CuI redox dynamics during the reduction half cycle of the NH3-Selective Catalytic Reduction (SCR) on Cu-CHA catalysts. Our measurements enable quantification of the fraction of oxidized Cu, reconstructed by Multivariate Curve Resolution (MCR) together with monitoring of the gas-phase evolution during the reaction. These data both on the dynamics of the gas-phase and of the active site oxidation state have been used to assess the reduction half cycle rate equation and estimate the rate constant. Our results in terms of reaction orders and kinetic constant are in line with previous findings in the literature. Overall, our results demonstrate that the combined analysis of the UV spectra and of the gas-phase dynamics provides converging and unparalleled kinetic insight: this approach effectively resolves ambiguities concerning RHC kinetics and mechanism. More in general, this work provides evidence that operando spectroscopy can be used to extract quantitative kinetic information on catalytic cycles.
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Affiliation(s)
- Chiara Negri
- Laboratory of Catalysis and Catalytic Processes, Dipartimento di Energia, Politecnico di Milano, Via La Masa 34, 20156, Milano, Italy
| | - Nicola Usberti
- Laboratory of Catalysis and Catalytic Processes, Dipartimento di Energia, Politecnico di Milano, Via La Masa 34, 20156, Milano, Italy
| | - Gabriele Contaldo
- Laboratory of Catalysis and Catalytic Processes, Dipartimento di Energia, Politecnico di Milano, Via La Masa 34, 20156, Milano, Italy
| | - Mauro Bracconi
- Laboratory of Catalysis and Catalytic Processes, Dipartimento di Energia, Politecnico di Milano, Via La Masa 34, 20156, Milano, Italy
| | - Isabella Nova
- Laboratory of Catalysis and Catalytic Processes, Dipartimento di Energia, Politecnico di Milano, Via La Masa 34, 20156, Milano, Italy
| | - Matteo Maestri
- Laboratory of Catalysis and Catalytic Processes, Dipartimento di Energia, Politecnico di Milano, Via La Masa 34, 20156, Milano, Italy
| | - Enrico Tronconi
- Laboratory of Catalysis and Catalytic Processes, Dipartimento di Energia, Politecnico di Milano, Via La Masa 34, 20156, Milano, Italy
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2
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Yang X, Gong B, Chen W, Chen J, Qian C, Lu R, Min Y, Jiang T, Li L, Yu H. In Situ Quantitative Monitoring of Adsorption from Aqueous Phase by UV-vis Spectroscopy: Implication for Understanding of Heterogeneous Processes. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2024; 11:e2402732. [PMID: 38923364 PMCID: PMC11348127 DOI: 10.1002/advs.202402732] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/15/2024] [Revised: 06/05/2024] [Indexed: 06/28/2024]
Abstract
The development of in situ techniques to quantitatively characterize the heterogeneous reactions is essential for understanding physicochemical processes in aqueous phase. In this work, a new approach coupling in situ UV-vis spectroscopy with a two-step algorithm strategy is developed to quantitatively monitor heterogeneous reactions in a compact closed-loop incorporation. The algorithm involves the inverse adding-doubling method for light scattering correction and the multivariate curve resolution-alternating least squares (MCR-ALS) method for spectral deconvolution. Innovatively, theoretical spectral simulations are employed to connect MCR-ALS solutions with chemical molecular structural evolution without prior information for reference spectra. As a model case study, the aqueous adsorption kinetics of bisphenol A onto polyamide microparticles are successfully quantified in a one-step UV-vis spectroscopic measurement. The practical applicability of this approach is confirmed by rapidly screening a superior adsorbent from commercial materials for antibiotic wastewater adsorption treatment. The demonstrated capabilities are expected to extend beyond monitoring adsorption systems to other heterogeneous reactions, significantly advancing UV-vis spectroscopic techniques toward practical integration into automated experimental platforms for probing aqueous chemical processes and beyond.
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Affiliation(s)
- Xu‐Dan Yang
- CAS Key Laboratory of Urban Pollutant ConversionDepartment of Environmental Science and EngineeringUniversity of Science and Technology of ChinaHefei230026China
| | - Bo Gong
- CAS Key Laboratory of Urban Pollutant ConversionDepartment of Environmental Science and EngineeringUniversity of Science and Technology of ChinaHefei230026China
| | - Wei Chen
- School of Metallurgy and EnvironmentCentral South UniversityChangsha410083China
| | - Jie‐Jie Chen
- CAS Key Laboratory of Urban Pollutant ConversionDepartment of Environmental Science and EngineeringUniversity of Science and Technology of ChinaHefei230026China
| | - Chen Qian
- CAS Key Laboratory of Urban Pollutant ConversionDepartment of Environmental Science and EngineeringUniversity of Science and Technology of ChinaHefei230026China
| | - Rui Lu
- School of Environmental and Biological EngineeringNanjing University of Science and TechnologyNanjing210094China
| | - Yuan Min
- CAS Key Laboratory of Urban Pollutant ConversionDepartment of Environmental Science and EngineeringUniversity of Science and Technology of ChinaHefei230026China
| | - Ting Jiang
- CAS Key Laboratory of Urban Pollutant ConversionDepartment of Environmental Science and EngineeringUniversity of Science and Technology of ChinaHefei230026China
| | - Liang Li
- CAS Key Laboratory of Urban Pollutant ConversionDepartment of Environmental Science and EngineeringUniversity of Science and Technology of ChinaHefei230026China
| | - Han‐Qing Yu
- CAS Key Laboratory of Urban Pollutant ConversionDepartment of Environmental Science and EngineeringUniversity of Science and Technology of ChinaHefei230026China
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3
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Bols ML, Ma J, Rammal F, Plessers D, Wu X, Navarro-Jaén S, Heyer AJ, Sels BF, Solomon EI, Schoonheydt RA. In Situ UV-Vis-NIR Absorption Spectroscopy and Catalysis. Chem Rev 2024; 124:2352-2418. [PMID: 38408190 DOI: 10.1021/acs.chemrev.3c00602] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/28/2024]
Abstract
This review highlights in situ UV-vis-NIR range absorption spectroscopy in catalysis. A variety of experimental techniques identifying reaction mechanisms, kinetics, and structural properties are discussed. Stopped flow techniques, use of laser pulses, and use of experimental perturbations are demonstrated for in situ studies of enzymatic, homogeneous, heterogeneous, and photocatalysis. They access different time scales and are applicable to different reaction systems and catalyst types. In photocatalysis, femto- and nanosecond resolved measurements through transient absorption are discussed for tracking excited states. UV-vis-NIR absorption spectroscopies for structural characterization are demonstrated especially for Cu and Fe exchanged zeolites and metalloenzymes. This requires combining different spectroscopies. Combining magnetic circular dichroism and resonance Raman spectroscopy is especially powerful. A multitude of phenomena can be tracked on transition metal catalysts on various supports, including changes in oxidation state, adsorptions, reactions, support interactions, surface plasmon resonances, and band gaps. Measurements of oxidation states, oxygen vacancies, and band gaps are shown on heterogeneous catalysts, especially for electrocatalysis. UV-vis-NIR absorption is burdened by broad absorption bands. Advanced analysis techniques enable the tracking of coking reactions on acid zeolites despite convoluted spectra. The value of UV-vis-NIR absorption spectroscopy to catalyst characterization and mechanistic investigation is clear but could be expanded.
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Affiliation(s)
- Max L Bols
- Laboratory for Chemical Technology (LCT), University of Ghent, Technologiepark Zwijnaarde 125, 9052 Ghent, Belgium
| | - Jing Ma
- Department of Microbial and Molecular Systems, Center for Sustainable Catalysis and Engineering, KU Leuven, Celestijnenlaan 200F, B-3001 Leuven, Belgium
| | - Fatima Rammal
- Department of Microbial and Molecular Systems, Center for Sustainable Catalysis and Engineering, KU Leuven, Celestijnenlaan 200F, B-3001 Leuven, Belgium
| | - Dieter Plessers
- Department of Microbial and Molecular Systems, Center for Sustainable Catalysis and Engineering, KU Leuven, Celestijnenlaan 200F, B-3001 Leuven, Belgium
| | - Xuejiao Wu
- Department of Microbial and Molecular Systems, Center for Sustainable Catalysis and Engineering, KU Leuven, Celestijnenlaan 200F, B-3001 Leuven, Belgium
| | - Sara Navarro-Jaén
- Department of Microbial and Molecular Systems, Center for Sustainable Catalysis and Engineering, KU Leuven, Celestijnenlaan 200F, B-3001 Leuven, Belgium
| | - Alexander J Heyer
- Department of Microbial and Molecular Systems, Center for Sustainable Catalysis and Engineering, KU Leuven, Celestijnenlaan 200F, B-3001 Leuven, Belgium
- Department of Chemistry, Stanford University, Stanford, California 94305, United States
| | - Bert F Sels
- Department of Microbial and Molecular Systems, Center for Sustainable Catalysis and Engineering, KU Leuven, Celestijnenlaan 200F, B-3001 Leuven, Belgium
| | - Edward I Solomon
- Department of Chemistry, Stanford University, Stanford, California 94305, United States
| | - Robert A Schoonheydt
- Department of Microbial and Molecular Systems, Center for Sustainable Catalysis and Engineering, KU Leuven, Celestijnenlaan 200F, B-3001 Leuven, Belgium
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4
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Negri C, Colombo R, Bracconi M, Atzori C, Donazzi A, Lucotti A, Tommasini M, Maestri M. Operando UV-vis spectroscopy for real-time monitoring of nanoparticle size in reaction conditions: a case study on rWGS over Au nanoparticles. Catal Sci Technol 2024; 14:1318-1327. [PMID: 38449727 PMCID: PMC10913852 DOI: 10.1039/d3cy01392h] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2023] [Accepted: 01/27/2024] [Indexed: 03/08/2024]
Abstract
We propose the use of surface plasmon resonance (SPR) as a distinctive marker for real-time monitoring in reaction conditions of gold nanoparticles supported on α-Al2O3. The study leverages the SPR shape-and-size dependency to monitor metal nanoparticles in reaction conditions, evidencing an influence of both dimensions and agglomerations on the SPR peak position. Operando measurements, coupling UV-vis spectroscopy and catalytic testing, allows to follow the dynamics during nanoparticle formation (Au3+ to Au0 reduction) and during the reverse water gas shift reaction (CO2 + H2 → CO + H2O). The catalyst structure and stability in reaction conditions was further confirmed by operando X-ray spectroscopy and PXRD data. Overall, this approach enables the direct acquisition of information on the structure-activity relationship of metal-based supported catalysts under actual reaction conditions.
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Affiliation(s)
- Chiara Negri
- Laboratory of Catalysis and Catalytic Processes, Dipartimento di Energia Politecnico di Milano, Via la Masa 34 20156 Milano Italy
| | - Riccardo Colombo
- Laboratory of Catalysis and Catalytic Processes, Dipartimento di Energia Politecnico di Milano, Via la Masa 34 20156 Milano Italy
| | - Mauro Bracconi
- Laboratory of Catalysis and Catalytic Processes, Dipartimento di Energia Politecnico di Milano, Via la Masa 34 20156 Milano Italy
| | - Cesare Atzori
- European Synchrotron Radiation Facility 71 Avenue des Martyrs CS 40220 Grenoble France
| | - Alessandro Donazzi
- Laboratory of Catalysis and Catalytic Processes, Dipartimento di Energia Politecnico di Milano, Via la Masa 34 20156 Milano Italy
| | - Andrea Lucotti
- Department of Chemistry, Materials and Chemical Engineering, Politecnico di Milano Piazza Leonardo da Vinci 32 20133 Milano Italy
| | - Matteo Tommasini
- Department of Chemistry, Materials and Chemical Engineering, Politecnico di Milano Piazza Leonardo da Vinci 32 20133 Milano Italy
| | - Matteo Maestri
- Laboratory of Catalysis and Catalytic Processes, Dipartimento di Energia Politecnico di Milano, Via la Masa 34 20156 Milano Italy
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5
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Gong Y, He T. Gaining Deep Understanding of Electrochemical CO 2 RR with In Situ/Operando Techniques. SMALL METHODS 2023; 7:e2300702. [PMID: 37608449 DOI: 10.1002/smtd.202300702] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/03/2023] [Revised: 08/09/2023] [Indexed: 08/24/2023]
Abstract
Electrocatalysis for CO2 conversion has been extensively studied to mitigate the energy shortage and environmental issues, which are gaining ever-increasing attention. However, the complicated CO2 reduction process and the dynamic evolution occurring on electrocatalyst surface make it hard to understand the catalytic mechanism. The development of advanced in situ/operando techniques intelligently coupled with electrochemical cells sheds light on the related study via capturing surface atomic rearrangement, tracing chemical state change of catalysts, monitoring the behavior of intermediates and products, and depicting microenvironment near the electrode surface. In this review, fundamentals of the state-of-the-art in situ/operando techniques are clarified first. Case studies on the in situ/operando techniques performed to probe the CO2 reduction reaction processes are then discussed in detail. Finally, conclusions and outlook on this field are presented.
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Affiliation(s)
- Yue Gong
- CAS Laboratory of Nanosystem and Hierarchical Fabrication, National Center for Nanoscience and Technology, Beijing, 100190, P. R. China
- University of Chinese Academy of Sciences, Beijing, 100049, P. R. China
| | - Tao He
- CAS Laboratory of Nanosystem and Hierarchical Fabrication, National Center for Nanoscience and Technology, Beijing, 100190, P. R. China
- University of Chinese Academy of Sciences, Beijing, 100049, P. R. China
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6
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Qi Y, Zhang R, Rajarahm P, Zhang S, Ebrahim Attia AB, Bi R, Olivo M. Simultaneous Dual-Wavelength Source Raman Spectroscopy with a Handheld Confocal Probe for Analysis of the Chemical Composition of In Vivo Human Skin. Anal Chem 2023; 95:5240-5247. [PMID: 36930570 PMCID: PMC10062338 DOI: 10.1021/acs.analchem.2c05065] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2022] [Accepted: 02/21/2023] [Indexed: 03/18/2023]
Abstract
Confocal Raman spectroscopy (CRS) is a powerful tool that has been widely used for biological tissue analysis because of its noninvasive nature, high specificity, and rich biochemical information. However, current commercial CRS systems suffer from limited detection regions (450-1750 cm-1), bulky sizes, nonflexibilities, slow acquisitions by consecutive excitations, and high costs if using a Fourier transform (FT) Raman spectroscopy with an InGaAs detector, which impede their adoption in clinics. In this study, we developed a portable CRS system with a simultaneous dual-wavelength source and a miniaturized handheld probe (120 mm × 60 mm × 50 mm) that can acquire spectra in both fingerprint (FP, 450-1750 cm-1) and high wavenumber (HW, 2800-3800 cm-1) regions simultaneously. An innovative design combining 671 and 785 nm lasers for simultaneous excitation through a compact and high-efficiency (>90%) wavelength combiner was implemented. Moreover, to decouple the fused FP and HW spectra, a first-of-its-kind precise Raman spectra separation algorithm (PRSSA) was developed based on the maximum a posteriori probability (MAP) estimate. The accuracy of spectra separation was greater than 99%, demonstrated in both phantom experiments and in vivo human skin measurements. The total data acquisition time was reduced by greater than 50% compared to other CRS systems. The results proved our proposed CRS system and PRSSA's superior capability in fast and ultrawideband spectra acquisition will significantly improve the integration of CRS in the clinical workflow.
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Affiliation(s)
- Yi Qi
- Institute
of Bioengineering and Bioimaging, A*STAR, Singapore 138667, Singapore
| | - Ruochong Zhang
- Institute
of Bioengineering and Bioimaging, A*STAR, Singapore 138667, Singapore
| | | | - Shuyan Zhang
- Institute
of Bioengineering and Bioimaging, A*STAR, Singapore 138667, Singapore
| | | | - Renzhe Bi
- Institute
of Bioengineering and Bioimaging, A*STAR, Singapore 138667, Singapore
| | - Malini Olivo
- Institute
of Bioengineering and Bioimaging, A*STAR, Singapore 138667, Singapore
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7
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Rettenmaier K, Zickler GA, Redhammer GJ, Berger T. Substrate-Enabled Room-Temperature Electrochemical Deposition of Crystalline ZnMnO 3. Chemphyschem 2023; 24:e202200586. [PMID: 36070988 PMCID: PMC10092203 DOI: 10.1002/cphc.202200586] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2022] [Revised: 09/07/2022] [Indexed: 01/04/2023]
Abstract
Mixed transition metal oxides have emerged as promising electrode materials for electrochemical energy storage and conversion. To optimize the functional electrode properties, synthesis approaches allowing for a systematic tailoring of the materials' composition, crystal structure and morphology are urgently needed. Here we report on the room-temperature electrodeposition of a ternary oxide based on earth-abundant metals, specifically, the defective cubic spinel ZnMnO3 . In this unprecedented approach, ZnO surfaces act as (i) electron source for the interfacial reduction of MnO4 - in aqueous solution, (ii) as substrate for epitaxial growth of the deposit and (iii) as Zn precursor for the formation of ZnMnO3 . Epitaxial growth of ZnMnO3 on the lateral facets of ZnO nanowires assures effective electronic communication between the electroactive material and the conducting scaffold and gives rise to a pronounced 2-dimensional morphology of the electrodeposit forming - after partial delamination from the substrate - twisted nanosheets. The synthesis strategy shows promise for the direct growth of different mixed transition metal oxides as electroactive phase onto conductive substrates and thus for the fabrication of binder-free nanocomposite electrodes.
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Affiliation(s)
- Karin Rettenmaier
- Department of Chemistry and Physics of Materials, University of Salzburg, Jakob-Haringer-Straße 2a, A-5020, Salzburg, Austria
| | - Gregor A Zickler
- Department of Chemistry and Physics of Materials, University of Salzburg, Jakob-Haringer-Straße 2a, A-5020, Salzburg, Austria
| | - Günther J Redhammer
- Department of Chemistry and Physics of Materials, University of Salzburg, Jakob-Haringer-Straße 2a, A-5020, Salzburg, Austria
| | - Thomas Berger
- Department of Chemistry and Physics of Materials, University of Salzburg, Jakob-Haringer-Straße 2a, A-5020, Salzburg, Austria
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8
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Lee JS, Caratzoulas S, Lobo RF. Carbocation-Mediated Cyclization of Trienes in Acid Zeolites. J Phys Chem A 2021; 125:4062-4069. [PMID: 33969688 DOI: 10.1021/acs.jpca.0c11574] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The mechanism by which acid zeolites catalyze the formation of aromatic species is not fully understood and is important in an array of industrial processes such as the methanol to gasoline reaction. The so-called "carbon pool" mechanism is generally agreed to be the main channel for the formation of hydrocarbons from methanol. There is, however, no agreed sequence of elementary steps that explains how linear intermediates transform to cyclic intermediates, let alone aromatic rings. Recent work suggests the formation of conjugated trienes during zeolite-catalyzed aromatization, but mechanisms involving triene-derived carbocations have never been investigated using modern computational tools. In this work, we propose a new mechanism for cyclization of hexatriene over the Brønsted acid site of faujasite zeolite. Microkinetic models (MKM) using the results of Density Functional Theory (DFT) calculations predict selectivity for neutral 5-membered-ring intermediates over 6-membered-ring intermediates, as suggested by infrared and UV-vis spectroscopic results reported by others. Given that the products of aromatization are 6-membered rings, this result suggests that triene cyclization can only explain how linear hydrocarbons become cyclic intermediates but not the mechanisms that ultimately lead to the aromatic rings seen in industrial zeolite-catalyzed hydrocarbon processes.
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Affiliation(s)
- Jason S Lee
- Department of Chemical and Biomolecular Engineering, University of Delaware, Newark, Delaware 19716, United States.,Center for Neutron Research, University of Delaware, Newark, Delaware 19716, United States
| | - Stavros Caratzoulas
- Catalysis Center for Energy Innovation, University of Delaware, Newark, Delaware 19716, United States
| | - Raul F Lobo
- Department of Chemical and Biomolecular Engineering, University of Delaware, Newark, Delaware 19716, United States.,Center for Neutron Research, University of Delaware, Newark, Delaware 19716, United States.,Catalysis Center for Energy Innovation, University of Delaware, Newark, Delaware 19716, United States
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9
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Oda A, Shionoya H, Hotta Y, Takewaki T, Sawabe K, Satsuma A. Spectroscopic Evidence of Efficient Generation of Dicopper Intermediate in Selective Catalytic Reduction of NO over Cu-Ion-Exchanged Zeolites. ACS Catal 2020. [DOI: 10.1021/acscatal.0c03425] [Citation(s) in RCA: 27] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Affiliation(s)
- Akira Oda
- Department of Materials Chemistry, Graduate School of Engineering, Nagoya University, Nagoya 464-8603, Japan
- Elements Strategy Initiative for Catalysts and Batteries (ESICB), Kyoto University, Kyoto 615-8520, Japan
| | - Hitomi Shionoya
- Department of Materials Chemistry, Graduate School of Engineering, Nagoya University, Nagoya 464-8603, Japan
| | - Yuusuke Hotta
- Science & Innovation Center, Inorganic Materials Laboratory, Mitsubishi Chemical Corporation, Yokohama 227-8502, Japan
| | - Takahiko Takewaki
- Science & Innovation Center, Inorganic Materials Laboratory, Mitsubishi Chemical Corporation, Yokohama 227-8502, Japan
| | - Kyoichi Sawabe
- Department of Materials Chemistry, Graduate School of Engineering, Nagoya University, Nagoya 464-8603, Japan
| | - Atsushi Satsuma
- Department of Materials Chemistry, Graduate School of Engineering, Nagoya University, Nagoya 464-8603, Japan
- Elements Strategy Initiative for Catalysts and Batteries (ESICB), Kyoto University, Kyoto 615-8520, Japan
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10
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Chai Y, Shang W, Li W, Wu G, Dai W, Guan N, Li L. Noble Metal Particles Confined in Zeolites: Synthesis, Characterization, and Applications. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2019; 6:1900299. [PMID: 31453060 PMCID: PMC6702632 DOI: 10.1002/advs.201900299] [Citation(s) in RCA: 76] [Impact Index Per Article: 15.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/07/2019] [Revised: 03/14/2019] [Indexed: 05/19/2023]
Abstract
Noble metal nanoparticles or subnanometric particles confined in zeolites, that is, metal@zeolite, represent an important type of functional materials with typical core-shell structure. This type of material is known for decades and recently became a research hotspot due to their emerging applications in various fields. Remarkable achievements are made dealing with the synthesis, characterization, and applications of noble metal particles confined in zeolites. Here, the most representative research progress in metal@zeolites is briefly reviewed, aiming to boost further research on this topic. For the synthesis of metal@zeolites, various strategies, such as direct synthesis from inorganic or ligand-assisted noble metal precursors, multistep postsynthesis encapsulation and ion-exchange followed by reduction, are introduced and compared. For the characterization of metal@zeolites, several most useful techniques, such as electron microscopy, X-ray based spectroscopy, infrared and fluorescence emission spectroscopy, are recommended to check the successful confinement of noble metal particles in zeolite matrix and their unique physiochemical properties. For the applications of metal@zeolites, catalysis and optics are involved with an emphasis on catalytic applications including the size-dependent catalytic properties, the sintering-resistance properties, the substrate shape-selective catalysis, and catalysis modulation by zeolite microenvironment.
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Affiliation(s)
- Yuchao Chai
- School of Materials Science and EngineeringNational Institute for Advanced MaterialsNankai UniversityTianjin300350China
| | - Weixiang Shang
- School of Materials Science and EngineeringNational Institute for Advanced MaterialsNankai UniversityTianjin300350China
| | - Weijie Li
- School of Materials Science and EngineeringNational Institute for Advanced MaterialsNankai UniversityTianjin300350China
| | - Guangjun Wu
- School of Materials Science and EngineeringNational Institute for Advanced MaterialsNankai UniversityTianjin300350China
- Key Laboratory of Advanced Energy Materials Chemistry of Ministry of EducationCollaborative Innovation Center of Chemical Science and EngineeringNankai UniversityTianjin300071China
| | - Weili Dai
- School of Materials Science and EngineeringNational Institute for Advanced MaterialsNankai UniversityTianjin300350China
- Key Laboratory of Advanced Energy Materials Chemistry of Ministry of EducationCollaborative Innovation Center of Chemical Science and EngineeringNankai UniversityTianjin300071China
| | - Naijia Guan
- School of Materials Science and EngineeringNational Institute for Advanced MaterialsNankai UniversityTianjin300350China
- Key Laboratory of Advanced Energy Materials Chemistry of Ministry of EducationCollaborative Innovation Center of Chemical Science and EngineeringNankai UniversityTianjin300071China
| | - Landong Li
- School of Materials Science and EngineeringNational Institute for Advanced MaterialsNankai UniversityTianjin300350China
- Key Laboratory of Advanced Energy Materials Chemistry of Ministry of EducationCollaborative Innovation Center of Chemical Science and EngineeringNankai UniversityTianjin300071China
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11
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Negri C, Borfecchia E, Cutini M, Lomachenko KA, Janssens TVW, Berlier G, Bordiga S. Evidence of Mixed‐Ligand Complexes in Cu−CHA by Reaction of Cu Nitrates with NO/NH
3
at Low Temperature. ChemCatChem 2019. [DOI: 10.1002/cctc.201900590] [Citation(s) in RCA: 25] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Chiara Negri
- Department of Chemistry, NIS Centre and INSTM Reference CenterUniversity of Turin Via Giuria 7 Turin 10125 Italy
| | - Elisa Borfecchia
- Department of Chemistry, NIS Centre and INSTM Reference CenterUniversity of Turin Via Giuria 7 Turin 10125 Italy
| | - Michele Cutini
- Department of Chemistry, NIS Centre and INSTM Reference CenterUniversity of Turin Via Giuria 7 Turin 10125 Italy
| | - Kirill A. Lomachenko
- European Synchrotron Radiation Facility 71 Avenue des Martyrs, CS 40220 Grenoble Cedex 9 38043 France
| | | | - Gloria Berlier
- Department of Chemistry, NIS Centre and INSTM Reference CenterUniversity of Turin Via Giuria 7 Turin 10125 Italy
| | - Silvia Bordiga
- Department of Chemistry, NIS Centre and INSTM Reference CenterUniversity of Turin Via Giuria 7 Turin 10125 Italy
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12
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Gallo E, Gorelov E, Guda AA, Bugaev AL, Bonino F, Borfecchia E, Ricchiardi G, Gianolio D, Chavan S, Lamberti C. Effect of Molecular Guest Binding on the d–d Transitions of Ni2+ of CPO-27-Ni: A Combined UV–Vis, Resonant-Valence-to-Core X-ray Emission Spectroscopy, and Theoretical Study. Inorg Chem 2017; 56:14408-14425. [DOI: 10.1021/acs.inorgchem.7b01471] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Affiliation(s)
- Erik Gallo
- NIS and INSTM Reference
Center, Department of Chemistry, University of Turin, Via Quarello
15, I-10135 Torino, Italy
- European Synchrotron Radiation Facility (ESRF), 6 Rue Jules Horowitz, BP 220, 38043, Grenoble Cedex
9, France
| | - Evgeny Gorelov
- European XFEL GmbH, Holzkoppel 4, 22869 Schenefeld, Germany
| | - Alexander A. Guda
- International Research Center “Smart Materials”, Southern Federal University, Zorge Street 5, 344090 Rostov-on-Don, Russia
| | - Aram L. Bugaev
- NIS and INSTM Reference
Center, Department of Chemistry, University of Turin, Via Quarello
15, I-10135 Torino, Italy
- International Research Center “Smart Materials”, Southern Federal University, Zorge Street 5, 344090 Rostov-on-Don, Russia
| | - Francesca Bonino
- NIS and INSTM Reference
Center, Department of Chemistry, University of Turin, Via Quarello
15, I-10135 Torino, Italy
| | - Elisa Borfecchia
- NIS and INSTM Reference
Center, Department of Chemistry, University of Turin, Via Quarello
15, I-10135 Torino, Italy
| | - Gabriele Ricchiardi
- NIS and INSTM Reference
Center, Department of Chemistry, University of Turin, Via Quarello
15, I-10135 Torino, Italy
| | - Diego Gianolio
- Harwell
Science and Innovation Campus, Diamond Light Source Ltd., OX11 0DE Didcot, United Kingdom
| | - Sachin Chavan
- Department of
Chemistry, University of Oslo, P.O. Box 1033 Blindern, N-0315 Oslo, Norway
| | - Carlo Lamberti
- International Research Center “Smart Materials”, Southern Federal University, Zorge Street 5, 344090 Rostov-on-Don, Russia
- CrisDi and INSTM Reference Center, Department of Chemistry, University of Turin, Via P. Giuria 7, I-10125 Torino, Italy
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13
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Taylor S, Samokhvalov A. Water as probe molecule for midgap states in nanocrystalline strontium titanate by conventional and synchronous luminescence spectroscopy under ambient conditions. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2017; 174:54-61. [PMID: 27875745 DOI: 10.1016/j.saa.2016.11.011] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/05/2016] [Revised: 10/16/2016] [Accepted: 11/12/2016] [Indexed: 06/06/2023]
Abstract
Alkaline earth metal titanates are broad bandgap semiconductors with applications in electronic devices, as catalysts, photocatalysts, sorbents, and sensors. Strontium titanate SrTiO3 is of interest in electronic devices, sensors, in the photocatalytic hydrogen generation, as catalyst and sorbent. Both photocatalysis and operation of electronic devices rely upon the pathways of relaxation of excited charge in the semiconductor, including relaxation through the midgap states. We report characterization of nanocrystalline SrTiO3 at room temperature by "conventional" vs. synchronous luminescence spectroscopy and complementary methods. We determined energies of radiative transitions in the visible range through the two midgap states in the nanocrystalline SrTiO3. Further, adsorption and desorption of vapor of water as "probe molecule" for midgap states in the nanocrystalline SrTiO3 was studied, for the first time, by luminescence spectroscopy under ambient conditions. Emission of visible light from the nanocrystalline SrTiO3 is significantly increased upon desorption of water and decreased (quenched) upon adsorption of water vapor, due to interactions with the surface midgap states.
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Affiliation(s)
- Sean Taylor
- Chemistry Department, Rutgers University, 315 Penn St., Camden, NJ 08102, USA
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14
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Ventura B, Poronik YM, Deperasińska I, Gryko DT. How a Small Structural Difference Can Turn Optical Properties of π-Extended Coumarins Upside Down: The Role of Non-Innocent Saturated Rings. Chemistry 2016; 22:15380-15388. [DOI: 10.1002/chem.201603038] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2016] [Indexed: 02/04/2023]
Affiliation(s)
| | - Yevgen M. Poronik
- Institute of Organic Chemistry PAS; 44/52 Kasprzaka str. 01-224 Warsaw Poland
| | | | - Daniel T. Gryko
- Institute of Organic Chemistry PAS; 44/52 Kasprzaka str. 01-224 Warsaw Poland
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15
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Xiang D, Wang X, Jia C, Lee T, Guo X. Molecular-Scale Electronics: From Concept to Function. Chem Rev 2016; 116:4318-440. [DOI: 10.1021/acs.chemrev.5b00680] [Citation(s) in RCA: 816] [Impact Index Per Article: 102.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Affiliation(s)
- Dong Xiang
- Beijing
National Laboratory for Molecular Sciences, State Key Laboratory for
Structural Chemistry of Unstable and Stable Species, College of Chemistry
and Molecular Engineering, Peking University, Beijing 100871, China
- Key
Laboratory of Optical Information Science and Technology, Institute
of Modern Optics, College of Electronic Information and Optical Engineering, Nankai University, Tianjin 300071, China
| | - Xiaolong Wang
- Beijing
National Laboratory for Molecular Sciences, State Key Laboratory for
Structural Chemistry of Unstable and Stable Species, College of Chemistry
and Molecular Engineering, Peking University, Beijing 100871, China
| | - Chuancheng Jia
- Beijing
National Laboratory for Molecular Sciences, State Key Laboratory for
Structural Chemistry of Unstable and Stable Species, College of Chemistry
and Molecular Engineering, Peking University, Beijing 100871, China
| | - Takhee Lee
- Department
of Physics and Astronomy, and Institute of Applied Physics, Seoul National University, Seoul 08826, Korea
| | - Xuefeng Guo
- Beijing
National Laboratory for Molecular Sciences, State Key Laboratory for
Structural Chemistry of Unstable and Stable Species, College of Chemistry
and Molecular Engineering, Peking University, Beijing 100871, China
- Department
of Materials Science and Engineering, College of Engineering, Peking University, Beijing 100871, China
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16
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Savara A, Weitz E. Elucidation of Intermediates and Mechanisms in Heterogeneous Catalysis Using Infrared Spectroscopy. Annu Rev Phys Chem 2014; 65:249-73. [DOI: 10.1146/annurev-physchem-040513-103647] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
Infrared spectroscopy has a long history as a tool for the identification of chemical compounds. More recently, various implementations of infrared spectroscopy have been successfully applied to studies of heterogeneous catalytic reactions with the objective of identifying intermediates and determining catalytic reaction mechanisms. We discuss selective applications of these techniques with a focus on several heterogeneous catalytic reactions, including hydrogenation, deNOx, water-gas shift, and reverse-water-gas shift. The utility of using isotopic substitutions and other techniques in tandem with infrared spectroscopy is discussed. We comment on the modes of implementation and the advantages and disadvantages of the various infrared techniques. We also note future trends and the role of computational calculations in such studies. The infrared techniques considered are transmission Fourier transform infrared spectroscopy, infrared reflection-absorption spectroscopy, polarization-modulation infrared reflection-absorption spectroscopy, sum-frequency generation, diffuse reflectance infrared Fourier transform spectroscopy, attenuated total reflectance, infrared emission spectroscopy, photoacoustic infrared spectroscopy, and surface-enhanced infrared absorption spectroscopy.
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Affiliation(s)
- Aditya Savara
- Chemical Sciences Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37830
| | - Eric Weitz
- Department of Chemistry and Catalysis Center, Northwestern University, Evanston, Illinois 60208
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17
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Jae J, Mahmoud E, Lobo RF, Vlachos DG. Cascade of Liquid-Phase Catalytic Transfer Hydrogenation and Etherification of 5-Hydroxymethylfurfural to Potential Biodiesel Components over Lewis Acid Zeolites. ChemCatChem 2014. [DOI: 10.1002/cctc.201300978] [Citation(s) in RCA: 91] [Impact Index Per Article: 9.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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