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Sainju R, Rathnayake D, Tan H, Bollas G, Dongare AM, Suib SL, Zhu Y. In Situ Studies of Single-Nanoparticle-Level Nickel Thermal Oxidation: From Early Oxide Nucleation to Diffusion-Balanced Oxide Thickening. ACS NANO 2022; 16:6468-6479. [PMID: 35413193 DOI: 10.1021/acsnano.2c00742] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
High-temperature oxidation mechanisms of metallic nanoparticles have been extensively investigated; however, it is challenging to determine whether the kinetic modeling is applicable at the nanoscale and how the differences in nanoparticle size influence the oxidation mechanisms. In this work, we study thermal oxidation of pristine Ni nanoparticles ranging from 4 to 50 nm in 1 bar 1%O2/N2 at 600 °C using in situ gas-cell environmental transmission electron microscopy. Real-space in situ oxidation videos revealed an unexpected nanoparticle surface refacetting before oxidation and a strong Ni nanoparticle size dependence, leading to distinct structural development during the oxidation and different final NiO morphology. By quantifying the NiO thickness/volume change in real space, individual nanoparticle-level oxidation kinetics was established and directly correlated with nanoparticle microstructural evolution with specified fast and slow oxidation directions. Thus, for the size-dependent Ni nanoparticle oxidation, we propose a unified oxidation theory with a two-stage oxidation process: stage 1: dominated by the early NiO nucleation (Avrami-Erofeev model) and stage 2: the Wagner diffusion-balanced NiO shell thickening (Wanger model). In particular, to what extent the oxidation would proceed into stage 2 dictates the final NiO morphology, which depends on the Ni starting radius with respect to the critical thickness under given oxidation conditions. The overall oxidation duration is controlled by both the diffusivity of Ni2+ in NiO and the Ni in Ni self-diffusion. We also compare the single-particle kinetic curve with the collective one and discuss the effects of nanoparticle size differences on kinetic model analysis.
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2
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Zafer M, Keskin CS, Özdemir A. Highly sensitive determination of Co(II) ions in solutions by using modified silver nanoparticles. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2020; 239:118487. [PMID: 32485604 DOI: 10.1016/j.saa.2020.118487] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/21/2020] [Revised: 05/09/2020] [Accepted: 05/13/2020] [Indexed: 06/11/2023]
Abstract
In this manuscript, we report the development of a rapid and facile optic sensor for highly sensitive and selective detection of cobalt ions (Co(II)). The detection strategy was based on the specific silver nanoparticle-glutathione interaction and later on secondary interaction of this structure with cysteine and Co(II) ion. The interaction of these structures creates a new absorption band in the UV region. The intensity change of this band can be correlated by Co(II) ion concentration. The addition of cysteine decreases the Surface Plasmon Resonance (SPR) of silver nanoparticles but does not provide quantitative information. The proposed method offers the advantage of improved sensitivity for detection of Co(II) ions in a very short time period. Co(II) ions create a unique absorption peak during the complex formation and this peak provides sensitive determination of this metal ion in existence of other metal ions. The peak is visible only after taking the first derivative of absorption spectra. Under the optimized conditions, the detection limit of the method is around 0.68 μM. In addition, the synthesized silver nanoparticles (AgNPs) were characterized by atomic force microscopy (AFM). The proposed metal ion sensor provides a very facile and convenient way to determine the concentration of Co(II) ions in aqueous system.
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Affiliation(s)
- Merve Zafer
- Department of Chemistry, Faculty of Arts and Sciences, Sakarya University, 54050 Serdivan, Sakarya, Turkey
| | - Can Serkan Keskin
- Department of Chemistry, Faculty of Arts and Sciences, Sakarya University, 54050 Serdivan, Sakarya, Turkey
| | - Abdil Özdemir
- Department of Chemistry, Faculty of Arts and Sciences, Sakarya University, 54050 Serdivan, Sakarya, Turkey.
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Niu F, Yan Z, Kusema BT, Bahri M, Ersen O, Khodakov AY, Ordomsky VV. Disassembly of Supported Co and Ni Nanoparticles by Carbon Deposition for the Synthesis of Highly Dispersed and Active Catalysts. ACS Catal 2020. [DOI: 10.1021/acscatal.0c00903] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Feng Niu
- Univ. Lille, CNRS, Centrale Lille, Univ. Artois, UMR 8181-UCCS-Unité de Catalyse et Chimie du Solide, F-59000 Lille, France
- E2P2L, UMI 3464 CNRS-Solvay, 3966 Jin Du Road, 201108 Shanghai, People’s Republic of China
| | - Zhen Yan
- E2P2L, UMI 3464 CNRS-Solvay, 3966 Jin Du Road, 201108 Shanghai, People’s Republic of China
| | - Bright T. Kusema
- E2P2L, UMI 3464 CNRS-Solvay, 3966 Jin Du Road, 201108 Shanghai, People’s Republic of China
| | - Mounib Bahri
- Institut de Physique et Chimie des Matériaux de Strasbourg (IPCMS)-UMR 7504 CNRS, Université de Strasbourg, 23 rue du Loess, BP 43, 67034 Strasbourg Cedex 2, France
| | - Ovidiu Ersen
- Institut de Physique et Chimie des Matériaux de Strasbourg (IPCMS)-UMR 7504 CNRS, Université de Strasbourg, 23 rue du Loess, BP 43, 67034 Strasbourg Cedex 2, France
| | - Andrei Y. Khodakov
- Univ. Lille, CNRS, Centrale Lille, Univ. Artois, UMR 8181-UCCS-Unité de Catalyse et Chimie du Solide, F-59000 Lille, France
| | - Vitaly V. Ordomsky
- Univ. Lille, CNRS, Centrale Lille, Univ. Artois, UMR 8181-UCCS-Unité de Catalyse et Chimie du Solide, F-59000 Lille, France
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Rolly GS, Meyerstein D, Yardeni G, Bar-Ziv R, Zidki T. New insights into HER catalysis: the effect of nano-silica support on catalysis by silver nanoparticles. Phys Chem Chem Phys 2020; 22:6401-6405. [DOI: 10.1039/c9cp06820a] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Nano-silica support affects the activity of silver nanoparticles towards the hydrogen evolution reaction by (CH3)2COH˙ radicals.
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Affiliation(s)
- Gifty Sara Rolly
- Department of Chemical Sciences
- The Center for Radical Reactions and the Schlesinger Family Center for Compact Accelerators
- Radiation Sources and Applications
- Ariel University
- Ariel
| | - Dan Meyerstein
- Department of Chemical Sciences
- The Center for Radical Reactions and the Schlesinger Family Center for Compact Accelerators
- Radiation Sources and Applications
- Ariel University
- Ariel
| | - Guy Yardeni
- Department of Chemistry
- Nuclear Research Centre Negev
- Beer-Sheva
- Israel
| | - Ronen Bar-Ziv
- Department of Chemistry
- Nuclear Research Centre Negev
- Beer-Sheva
- Israel
| | - Tomer Zidki
- Department of Chemical Sciences
- The Center for Radical Reactions and the Schlesinger Family Center for Compact Accelerators
- Radiation Sources and Applications
- Ariel University
- Ariel
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6
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Hernández Mejía C, van Deelen TW, de Jong KP. Activity enhancement of cobalt catalysts by tuning metal-support interactions. Nat Commun 2018; 9:4459. [PMID: 30367060 PMCID: PMC6203836 DOI: 10.1038/s41467-018-06903-w] [Citation(s) in RCA: 112] [Impact Index Per Article: 18.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2018] [Accepted: 10/02/2018] [Indexed: 11/24/2022] Open
Abstract
Interactions between metal nanoparticles and support materials can strongly influence the performance of catalysts. In particular, reducible oxidic supports can form suboxides that can decorate metal nanoparticles and enhance catalytic performance or block active sites. Therefore, tuning this metal-support interaction is essential for catalyst design. Here, we investigate reduction-oxidation-reduction (ROR) treatments as a method to affect metal-support interactions and related catalytic performance. Controlled oxidation of pre-reduced cobalt on reducible (TiO2 and Nb2O5) and irreducible (α-Al2O3) supports leads to the formation of hollow cobalt oxide particles. The second reduction results in a twofold increase in cobalt surface area only on reducible oxides and proportionally enhances the cobalt-based catalytic activity during Fischer-Tropsch synthesis at industrially relevant conditions. Such activities are usually only obtained by noble metal promotion of cobalt catalysts. ROR proves an effective approach to tune the interaction between metallic nanoparticles and reducible oxidic supports, leading to improved catalytic performance. Tuning metal-support interaction can strongly influence the performance of a catalyst, and is thus essential for catalyst design. Here, the authors investigate reduction-oxidation-reduction treatments as a method to affect metal-support interactions of cobalt-based catalysts in Fischer-Tropsch synthesis.
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Affiliation(s)
- Carlos Hernández Mejía
- Inorganic Chemistry and Catalysis, Debye Institute for Nanomaterials Science, Utrecht University, Universiteitsweg 99, 3584 CG, Utrecht, The Netherlands
| | - Tom W van Deelen
- Inorganic Chemistry and Catalysis, Debye Institute for Nanomaterials Science, Utrecht University, Universiteitsweg 99, 3584 CG, Utrecht, The Netherlands
| | - Krijn P de Jong
- Inorganic Chemistry and Catalysis, Debye Institute for Nanomaterials Science, Utrecht University, Universiteitsweg 99, 3584 CG, Utrecht, The Netherlands.
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Aluha J, Abatzoglou N. Activation and deactivation scenarios in a plasma-synthesized Co/C catalyst for Fischer-Tropsch synthesis. CAN J CHEM ENG 2018. [DOI: 10.1002/cjce.23259] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Affiliation(s)
- James Aluha
- Department of Chemical and Biotechnological Engineering; Université de Sherbrooke; Québec, QC Canada J1K 2R1
| | - Nicolas Abatzoglou
- Department of Chemical and Biotechnological Engineering; Université de Sherbrooke; Québec, QC Canada J1K 2R1
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Zheng J, Cai J, Jiang F, Xu Y, Liu X. Investigation of the highly tunable selectivity to linear α-olefins in Fischer–Tropsch synthesis over silica-supported Co and CoMn catalysts by carburization–reduction pretreatment. Catal Sci Technol 2017. [DOI: 10.1039/c7cy01764b] [Citation(s) in RCA: 42] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
An efficient strategy to tune the selectivity to α-olefins in FTS over Co-based catalysts has been developed.
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Affiliation(s)
- Jiao Zheng
- Department of Chemical Engineering, School of Chemical and Material Engineering
- Jiangnan University
- 214122 Wuxi
- China
| | - Jian Cai
- Department of Chemical Engineering, School of Chemical and Material Engineering
- Jiangnan University
- 214122 Wuxi
- China
| | - Feng Jiang
- Department of Chemical Engineering, School of Chemical and Material Engineering
- Jiangnan University
- 214122 Wuxi
- China
| | - Yuebing Xu
- Department of Chemical Engineering, School of Chemical and Material Engineering
- Jiangnan University
- 214122 Wuxi
- China
| | - Xiaohao Liu
- Department of Chemical Engineering, School of Chemical and Material Engineering
- Jiangnan University
- 214122 Wuxi
- China
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Wolf M, Fischer N, Claeys M. Effectiveness of catalyst passivation techniques studied in situ with a magnetometer. Catal Today 2016. [DOI: 10.1016/j.cattod.2016.05.003] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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10
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Labuschagne J, Meyer R, Chonco Z, Botha J, Moodley D. Application of water-tolerant Co/β-SiC catalysts in slurry phase Fischer–Tropsch synthesis. Catal Today 2016. [DOI: 10.1016/j.cattod.2016.01.039] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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Kwak G, Kim DE, Kim YT, Park HG, Kang SC, Ha KS, Jun KW, Lee YJ. Enhanced catalytic activity of cobalt catalysts for Fischer–Tropsch synthesis via carburization and hydrogenation and its application to regeneration. Catal Sci Technol 2016. [DOI: 10.1039/c5cy01399b] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
In Fischer–Tropsch synthesis (FTS), cobalt carbide (Co2C) is not a catalytically active material, but rather an undesired cobalt phase associated with low catalytic performance.
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Affiliation(s)
- Geunjae Kwak
- Center for Carbon Resources Conversion
- Korea Research Institute of Chemical Technology (KRICT)
- Daejeon 305-600
- Republic of Korea
| | - Du-Eil Kim
- Center for Carbon Resources Conversion
- Korea Research Institute of Chemical Technology (KRICT)
- Daejeon 305-600
- Republic of Korea
| | - Yong Tae Kim
- Center for Carbon Resources Conversion
- Korea Research Institute of Chemical Technology (KRICT)
- Daejeon 305-600
- Republic of Korea
| | - Hae-Gu Park
- Center for Carbon Resources Conversion
- Korea Research Institute of Chemical Technology (KRICT)
- Daejeon 305-600
- Republic of Korea
| | - Seok Chang Kang
- Center for Carbon Resources Conversion
- Korea Research Institute of Chemical Technology (KRICT)
- Daejeon 305-600
- Republic of Korea
| | - Kyoung-Su Ha
- Nanoscale Catalysis and Reaction Engineering Lab
- Department of Chemical and Biomolecular Engineering
- Sogang University
- Seoul
- Republic of Korea
| | - Ki-Won Jun
- Center for Carbon Resources Conversion
- Korea Research Institute of Chemical Technology (KRICT)
- Daejeon 305-600
- Republic of Korea
| | - Yun-Jo Lee
- Center for Carbon Resources Conversion
- Korea Research Institute of Chemical Technology (KRICT)
- Daejeon 305-600
- Republic of Korea
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Turczyniak S, Luo W, Papaefthimiou V, Ramgir NS, Haevecker M, Machocki A, Zafeiratos S. A Comparative Ambient Pressure X-ray Photoelectron and Absorption Spectroscopy Study of Various Cobalt-Based Catalysts in Reactive Atmospheres. Top Catal 2015. [DOI: 10.1007/s11244-015-0531-5] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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14
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Bartling S, Yin C, Barke I, Oldenburg K, Hartmann H, von Oeynhausen V, Pohl MM, Houben K, Tyo EC, Seifert S, Lievens P, Meiwes-Broer KH, Vajda S. Pronounced Size Dependence in Structure and Morphology of Gas-Phase Produced, Partially Oxidized Cobalt Nanoparticles under Catalytic Reaction Conditions. ACS NANO 2015; 9:5984-5998. [PMID: 26027910 DOI: 10.1021/acsnano.5b00791] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
It is generally accepted that optimal particle sizes are key for efficient nanocatalysis. Much less attention is paid to the role of morphology and atomic arrangement during catalytic reactions. Here, we unravel the structural, stoichiometric, and morphological evolution of gas-phase produced and partially oxidized cobalt nanoparticles in a broad size range. Particles with diameters between 1.4 and 22 nm generated in cluster sources are size selected and deposited on amorphous alumina (Al2O3) and ultrananocrystalline diamond (UNCD) films. A combination of different techniques is employed to monitor particle properties at the stages of production, exposure to ambient conditions, and catalytic reaction, in this case, the oxidative dehydrogenation of cyclohexane at elevated temperatures. A pronounced size dependence is found, naturally classifying the particles into three size regimes. While small and intermediate clusters essentially retain their compact morphology, large particles transform into hollow spheres due to the nanoscale Kirkendall effect. Depending on the substrate, an isotropic (Al2O3) or anisotropic (UNCD) Kirkendall effect is observed. The latter results in dramatic lateral size changes. Our results shed light on the interplay between chemical reactions and the catalyst's structure and provide an approach to tailor the cobalt oxide phase composition required for specific catalytic schemes.
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Affiliation(s)
- Stephan Bartling
- †Institut für Physik, Universität Rostock, Universitätsplatz 3, D-18051 Rostock, Germany
| | | | - Ingo Barke
- †Institut für Physik, Universität Rostock, Universitätsplatz 3, D-18051 Rostock, Germany
| | - Kevin Oldenburg
- †Institut für Physik, Universität Rostock, Universitätsplatz 3, D-18051 Rostock, Germany
| | - Hannes Hartmann
- †Institut für Physik, Universität Rostock, Universitätsplatz 3, D-18051 Rostock, Germany
| | - Viola von Oeynhausen
- †Institut für Physik, Universität Rostock, Universitätsplatz 3, D-18051 Rostock, Germany
| | - Marga-Martina Pohl
- ¶Leibniz-Institut für Katalyse e.V. an der Universität Rostock (LIKAT), Albert-Einstein-Strasse 29a, D-18059 Rostock, Germany
| | - Kelly Houben
- §Laboratory of Solid-State Physics and Magnetism, KU Leuven, Celestijnenlaan 200d, Box 2414, 3001 Leuven, Belgium
| | | | | | - Peter Lievens
- §Laboratory of Solid-State Physics and Magnetism, KU Leuven, Celestijnenlaan 200d, Box 2414, 3001 Leuven, Belgium
| | | | - Stefan Vajda
- #Department of Chemical and Environmental Engineering, Yale University, 10 Hillhouse Avenue, New Haven, Connecticut 06520, United States
- @Institute for Molecular Engineering, The University of Chicago, 5801 South Ellis Avenue, Chicago, Illinois 60637, United States
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15
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Deactivation and Regeneration of Commercial Type Fischer-Tropsch Co-Catalysts—A Mini-Review. Catalysts 2015. [DOI: 10.3390/catal5020478] [Citation(s) in RCA: 64] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
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