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Bae G, Kang DG, Ahn C, Kim D, Nam HG, Hyun G, Jang D, Han SM, Jeon S. Metal Nanocomposites Reinforced by Ceramic Nanoarchitecture: Exploiting Extrinsic Size Effects for High Mechanical Strength. NANO LETTERS 2024. [PMID: 39298740 DOI: 10.1021/acs.nanolett.4c04010] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/22/2024]
Abstract
The pursuit of harnessing superior mechanical properties achieved through the size effect on a macroscopic scale has been a prominent focus in engineering, as size-induced strengthening is enabled only in the nanoscale regime. This study presents a metal/ceramic/metal (MCM) nanocomposite reinforced by ceramic nanoarchitectures. Through proximity-field nanopatterning, the inch-scale production of nanoarchitecture films is enabled in a single fabrication step. The developed three-dimensional (3D) Ni/Al2O3/Ni nanocomposite film exhibits significantly high compressive strength, corresponding to an increase of approximately 30% compared with that calculated using the upper limits of the conventional rule of mixtures. The exceptional strength of the 3D MCM nanocomposite can be attributed to the extrinsic size effect of the ceramic nanoarchitectures. By combining size-induced strengthening of ceramics with the strengthening law for composites, a new type of strengthening model is derived and experimentally validated using the 3D MCM nanocomposite.
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Affiliation(s)
- Gwangmin Bae
- Department of Materials Science and Engineering, Korea University, Seoul 02841, Republic of Korea
- Department of Materials Science and Engineering, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 34141, Republic of Korea
| | - Dong Gyu Kang
- Department of Materials Science and Engineering, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 34141, Republic of Korea
| | - Changui Ahn
- Engineering Ceramic Center, Korea Institute of Ceramic Engineering and Technology (KICET), Icheon, Gyeonggi 17303, Republic of Korea
| | - Daeho Kim
- Department of Materials Science and Engineering, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 34141, Republic of Korea
| | - Hyeon Gyun Nam
- Department of Materials Science and Engineering, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 34141, Republic of Korea
| | - Gayea Hyun
- Department of Materials Science and Engineering, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 34141, Republic of Korea
| | - Dongchan Jang
- Department of Nuclear and Quantum Engineering, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 34141, Republic of Korea
| | - Seung Min Han
- Department of Materials Science and Engineering, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 34141, Republic of Korea
| | - Seokwoo Jeon
- Department of Materials Science and Engineering, Korea University, Seoul 02841, Republic of Korea
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Lucas J, Padmanabha Naveen NS, Janik MJ, Alexopoulos K, Noh G, Aireddy D, Ding K, Dorman JA, Dooley KM. Improved Selectivity and Stability in Methane Dry Reforming by Atomic Layer Deposition on Ni-CeO 2-ZrO 2/Al 2O 3 Catalysts. ACS Catal 2024; 14:9115-9133. [PMID: 38933468 PMCID: PMC11197040 DOI: 10.1021/acscatal.4c02019] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2024] [Revised: 05/20/2024] [Accepted: 05/20/2024] [Indexed: 06/28/2024]
Abstract
Ni can be used as a catalyst for dry reforming of methane (DRM), replacing more expensive and less abundant noble metal catalysts (Pt, Pd, and Rh) with little sacrifice in activity. Ni catalysts deactivate quickly under realistic DRM conditions. Rare earth oxides such as CeO2, or as CeO2-ZrO2-Al2O3 (CZA), are supports that improve both the activity and stability of Ni DRM systems due to their redox activity. However, redox-active supports can also enhance the undesired reverse water gas shift (RWGS) reaction, reducing the hydrogen selectivity. In this work, Ni on CZA was coated with an ultrathin Al2O3 overlayer using atomic layer deposition (ALD) to study the effects of the overlayer on catalyst activity, stability, and H2/CO ratio. A low-conversion screening method revealed improved DRM activity and lower coking rate upon the addition of the Al2O3 ALD overcoat, and improvements were subsequently confirmed in a high-conversion reactor at long times onstream. The overcoated samples gave an H2/CO ratio of ∼1 at high conversion, much greater than uncoated catalysts, and no evidence of deactivation. Characterization of used (but still active) catalysts using several techniques suggests that active Ni is in formal oxidation state >0, Ni-Ce-Al is most likely present as a mixed oxide at the surface, and a nominal thickness of 0.5 nm for the Al2O3 overcoat is optimal.
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Affiliation(s)
- Jonathan Lucas
- Department
of Chemical Engineering, Louisiana State
University, Baton
Rouge, Louisiana 70803, United States
| | | | - Michael J. Janik
- Department
of Chemical Engineering, The Pennsylvania
State University, University
Park, Pennsylvania 16802, United States
| | - Konstantinos Alexopoulos
- Department
of Chemical Engineering, The Pennsylvania
State University, University
Park, Pennsylvania 16802, United States
| | - Gina Noh
- Department
of Chemical Engineering, The Pennsylvania
State University, University
Park, Pennsylvania 16802, United States
| | - Divakar Aireddy
- Department
of Chemical Engineering, Louisiana State
University, Baton
Rouge, Louisiana 70803, United States
| | - Kunlun Ding
- Department
of Chemical Engineering, Louisiana State
University, Baton
Rouge, Louisiana 70803, United States
| | - James A. Dorman
- Department
of Chemical Engineering, Louisiana State
University, Baton
Rouge, Louisiana 70803, United States
| | - Kerry M. Dooley
- Department
of Chemical Engineering, Louisiana State
University, Baton
Rouge, Louisiana 70803, United States
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Olowoyo JO, Gharahshiran VS, Zeng Y, Zhao Y, Zheng Y. Atomic/molecular layer deposition strategies for enhanced CO 2 capture, utilisation and storage materials. Chem Soc Rev 2024; 53:5428-5488. [PMID: 38682880 DOI: 10.1039/d3cs00759f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/01/2024]
Abstract
Elevated levels of carbon dioxide (CO2) in the atmosphere and the diminishing reserves of fossil fuels have raised profound concerns regarding the resulting consequences of global climate change and the future supply of energy. Hence, the reduction and transformation of CO2 not only mitigates environmental pollution but also generates value-added chemicals, providing a dual remedy to address both energy and environmental challenges. Despite notable advancements, the low conversion efficiency of CO2 remains a major obstacle, largely attributed to its inert chemical nature. It is imperative to engineer catalysts/materials that exhibit high conversion efficiency, selectivity, and stability for CO2 transformation. With unparalleled precision at the atomic level, atomic layer deposition (ALD) and molecular layer deposition (MLD) methods utilize various strategies, including ultrathin modification, overcoating, interlayer coating, area-selective deposition, template-assisted deposition, and sacrificial-layer-assisted deposition, to synthesize numerous novel metal-based materials with diverse structures. These materials, functioning as active materials, passive materials or modifiers, have contributed to the enhancement of catalytic activity, selectivity, and stability, effectively addressing the challenges linked to CO2 transformation. Herein, this review focuses on ALD and MLD's role in fabricating materials for electro-, photo-, photoelectro-, and thermal catalytic CO2 reduction, CO2 capture and separation, and electrochemical CO2 sensing. Significant emphasis is dedicated to the ALD and MLD designed materials, their crucial role in enhancing performance, and exploring the relationship between their structures and catalytic activities for CO2 transformation. Finally, this comprehensive review presents the summary, challenges and prospects for ALD and MLD-designed materials for CO2 transformation.
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Affiliation(s)
- Joshua O Olowoyo
- Department of Chemical and Biochemical Engineering, Thompson Engineering Building, Western University, London, ON N6A 5B9, Canada.
| | - Vahid Shahed Gharahshiran
- Department of Chemical and Biochemical Engineering, Thompson Engineering Building, Western University, London, ON N6A 5B9, Canada.
| | - Yimin Zeng
- Natural Resources Canada - CanmetMaterials, Hamilton, Canada
| | - Yang Zhao
- Department of Mechanical and Materials Engineering, Western University, London, ON N6A 5B9, Canada.
| | - Ying Zheng
- Department of Chemical and Biochemical Engineering, Thompson Engineering Building, Western University, London, ON N6A 5B9, Canada.
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Zhou H, Docherty SR, Phongprueksathat N, Chen Z, Bukhtiyarov AV, Prosvirin IP, Safonova OV, Urakawa A, Copéret C, Müller CR, Fedorov A. Combining Atomic Layer Deposition with Surface Organometallic Chemistry to Enhance Atomic-Scale Interactions and Improve the Activity and Selectivity of Cu-Zn/SiO 2 Catalysts for the Hydrogenation of CO 2 to Methanol. JACS AU 2023; 3:2536-2549. [PMID: 37772188 PMCID: PMC10523371 DOI: 10.1021/jacsau.3c00319] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 06/18/2023] [Revised: 08/08/2023] [Accepted: 08/09/2023] [Indexed: 09/30/2023]
Abstract
The direct synthesis of methanol via the hydrogenation of CO2, if performed efficiently and selectively, is potentially a powerful technology for CO2 mitigation. Here, we develop an active and selective Cu-Zn/SiO2 catalyst for the hydrogenation of CO2 by introducing copper and zinc onto dehydroxylated silica via surface organometallic chemistry and atomic layer deposition, respectively. At 230 °C and 25 bar, the optimized catalyst shows an intrinsic methanol formation rate of 4.3 g h-1 gCu-1 and selectivity to methanol of 83%, with a space-time yield of 0.073 g h-1 gcat-1 at a contact time of 0.06 s g mL-1. X-ray absorption spectroscopy at the Cu and Zn K-edges and X-ray photoelectron spectroscopy studies reveal that the CuZn alloy displays reactive metal support interactions; that is, it is stable under H2 atmosphere and unstable under conditions of CO2 hydrogenation, indicating that the dealloyed structure contains the sites promoting methanol synthesis. While solid-state nuclear magnetic resonance studies identify methoxy species as the main stable surface adsorbate, transient operando diffuse reflectance infrared Fourier transform spectroscopy indicates that μ-HCOO*(ZnOx) species that form on the Cu-Zn/SiO2 catalyst are hydrogenated to methanol faster than the μ-HCOO*(Cu) species that are found in the Zn-free Cu/SiO2 catalyst, supporting the role of Zn in providing a higher activity in the Cu-Zn system.
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Affiliation(s)
- Hui Zhou
- Department
of Mechanical and Process Engineering, ETH
Zürich, CH-8092 Zürich, Switzerland
- Department
of Energy and Power Engineering, Tsinghua
University, 100084 Beijing, China
| | - Scott R. Docherty
- Department
of Chemistry and Applied Biosciences, ETH
Zürich, CH-8093 Zürich, Switzerland
| | - Nat Phongprueksathat
- Department
of Chemical Engineering, Delft University
of Technology, 2629 HZ Delft, The
Netherlands
| | - Zixuan Chen
- Department
of Mechanical and Process Engineering, ETH
Zürich, CH-8092 Zürich, Switzerland
| | - Andrey V. Bukhtiyarov
- Synchrotron
Radiation Facility SKIF, Boreskov Institute
of Catalysis SB RAS, 630559 Kol’tsovo, Russia
| | | | | | - Atsushi Urakawa
- Department
of Chemical Engineering, Delft University
of Technology, 2629 HZ Delft, The
Netherlands
| | - Christophe Copéret
- Department
of Chemistry and Applied Biosciences, ETH
Zürich, CH-8093 Zürich, Switzerland
| | - Christoph R. Müller
- Department
of Mechanical and Process Engineering, ETH
Zürich, CH-8092 Zürich, Switzerland
| | - Alexey Fedorov
- Department
of Mechanical and Process Engineering, ETH
Zürich, CH-8092 Zürich, Switzerland
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Xue Q, Li Z, Yan B, Wang Y, Luo G. Inhibition of sintering and coking by post-coating group IIA metal oxides on trace-Rh-promoted Ni-based catalysts for high-temperature steam reforming. J Catal 2023. [DOI: 10.1016/j.jcat.2022.12.005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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