1
|
Orbán B, Höltzl T. The promoter role of sulfur in carbon nanotube growth. Dalton Trans 2022; 51:9256-9264. [PMID: 35667372 DOI: 10.1039/d2dt00355d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
We investigate the effect of sulfur on the interaction of iron catalyst nanoparticles and carbon nanotubes (CNTs), typically present in a floating catalyst chemical vapor deposition (FCCVD) process. As a reference, the interaction of graphene with the Fe fcc(111) surface is used. In both systems we performed a systematic density functional theory (DFT) study on the interaction with different sulfur contents. We found that the presence of sulfur changes the nature and strength of interaction between graphene and the iron surface from strong chemisorption to weak physisorption. Furthermore, sulfur significantly reduces the CNT-iron binding, indicating a beneficial effect on the CNT growth and its promoter role. We believe that these results induce further experimental studies and optimization of the CNT synthesis process.
Collapse
Affiliation(s)
- Balázs Orbán
- Budapest University of Technology and Economics, Department of Inorganic and Analytical Chemistry, Műegyetem rkp. 3, H-1111, Budapest, Hungary
| | - Tibor Höltzl
- Budapest University of Technology and Economics, Department of Inorganic and Analytical Chemistry, Műegyetem rkp. 3, H-1111, Budapest, Hungary.,MTA-BME Computation Driven Research Group, Műegyetem rkp. 3, H-1111, Budapest, Hungary.,Furukawa Electric Institute of Technology, Késmárk utca 28/A, H-1158, Budapest, Hungary.
| |
Collapse
|
2
|
Bie J, Wang J, Chen S, Fa W. Catalytic Ability Comparison of Five Transition Metal Clusters (Zn, Cu, Fe, Ni, and Ru) for Heat‐Induced Graphene Etching by Ab Initio Molecular Dynamics Simulations. ADVANCED THEORY AND SIMULATIONS 2021. [DOI: 10.1002/adts.202100380] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Jie Bie
- National Laboratory of Solid State Microstructures and Department of Physics Nanjing University Nanjing 210093 China
| | - Jinlan Wang
- School of Physics Southeast University Nanjing 211189 China
| | - Shuang Chen
- KuangYaming Honors School and Institute for Brain Sciences Nanjing University Nanjing 210023 China
| | - Wei Fa
- National Laboratory of Solid State Microstructures and Department of Physics Nanjing University Nanjing 210093 China
| |
Collapse
|
3
|
Designing of low Pt electrocatalyst through immobilization on metal@C support for efficient hydrogen evolution reaction in acidic media. J Electroanal Chem (Lausanne) 2021. [DOI: 10.1016/j.jelechem.2021.115076] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
|
4
|
Gao S, Wang L, Li H, Liu Z, Shi G, Peng J, Wang B, Wang W, Cho K. Core-shell PdAu nanocluster catalysts to suppress sulfur poisoning. Phys Chem Chem Phys 2021; 23:15010-15019. [PMID: 34128008 DOI: 10.1039/d1cp01274f] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
Reducing sulfur poisoning is significant for maintaining the catalytic efficiency and durability of heterogeneous catalysts. We screened PdAu nanoclusters with specific Pd : Au ratios based on Monte Carlo simulations and then carried out density functional calculations to reveal how to reduce sulfur poisoning via alloying. Among various nanoclusters, the core-shell structure Pd13Au42 (Pd@Au) exhibits a low adsorption energy of SO2 (-0.67 eV), comparable with O2 (-0.45 eV) and lower than CO (-1.25 eV), thus avoiding sulfur poisoning during the CO catalytic oxidation. Fundamentally, the weak adsorption of SO2 originates from the negative d-band center of the shell and delocalized charge distribution near the Fermi level, due to the appropriate charge transfer from the core to shell. Core-shell nanoclusters with a different core (Ni, Cu, Ag, Pt) and a Pd@Au slab model were further constructed to validate and extend the results. These findings provide insights into designing core-shell catalysts to suppress sulfur poisoning while optimizing catalytic behaviors.
Collapse
Affiliation(s)
- Shan Gao
- Integrated Circuits and Smart System Lab (Shenzhen), Renewable Energy Conversion and Storage Center, Tianjin Key Laboratory of Photo-Electronic Thin Film Device and Technology, College of Electronic Information and Optical Engineering, Nankai University, Tianjin, 300071, China. and State Key Laboratory of Medicinal Chemical Biology, College of Pharmacy, Nankai University, Tianjin, 300071, China
| | - Linxia Wang
- Integrated Circuits and Smart System Lab (Shenzhen), Renewable Energy Conversion and Storage Center, Tianjin Key Laboratory of Photo-Electronic Thin Film Device and Technology, College of Electronic Information and Optical Engineering, Nankai University, Tianjin, 300071, China.
| | - Hui Li
- Integrated Circuits and Smart System Lab (Shenzhen), Renewable Energy Conversion and Storage Center, Tianjin Key Laboratory of Photo-Electronic Thin Film Device and Technology, College of Electronic Information and Optical Engineering, Nankai University, Tianjin, 300071, China.
| | - Zunfeng Liu
- State Key Laboratory of Medicinal Chemical Biology, College of Pharmacy, Nankai University, Tianjin, 300071, China
| | - Guoliang Shi
- State Environmental Protection Key Laboratory of Urban Ambient Air Particulate Matter Pollution Prevention and Control, Tianjin Key Laboratory of Urban Transport Emission Research, College of Environmental Science and Engineering, Nankai University, Tianjin, 300350, China
| | - Jianfei Peng
- Tianjin Key Laboratory of Urban Transport Emission Research, College of Environmental Science and Engineering, Nankai University, Tianjin, 300071, China
| | - Bin Wang
- Shenzhen Key Laboratory of Advanced Thin Films and Applications, College of Physics and Optoelectronic Engineering, Shenzhen University, Shenzhen, 518060, China
| | - Weichao Wang
- Integrated Circuits and Smart System Lab (Shenzhen), Renewable Energy Conversion and Storage Center, Tianjin Key Laboratory of Photo-Electronic Thin Film Device and Technology, College of Electronic Information and Optical Engineering, Nankai University, Tianjin, 300071, China.
| | - Kyeongjae Cho
- Department of Material Science and Engineering, University of Texas at Dallas, Richardson, 75080, USA
| |
Collapse
|
5
|
Dixit GK, Kumar M, Katiyar A, Jansen APJ, van Bavel AP, Agrawal R, Shenai PM, Srinivasan V. Unraveling the activity of iron carbide clusters embedded in silica for thermocatalytic conversion of methane. Catal Sci Technol 2021. [DOI: 10.1039/d1cy01229k] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
We report the detailed mechanism of direct nonoxidative CH4 conversion on iron carbide clusters embedded in silica, revealing that the FeC3 sites generated in situ from FeC2 are mainly responsible for CH4 conversion to CH3 and H2.
Collapse
Affiliation(s)
- Gopal K. Dixit
- Department of Chemistry, Indian Institute of Science Education and Research Bhopal, Bhopal 462 066, India
| | - Manish Kumar
- Department of Chemistry, Indian Institute of Science Education and Research Bhopal, Bhopal 462 066, India
| | - Ankita Katiyar
- Department of Chemistry, Indian Institute of Science Education and Research Bhopal, Bhopal 462 066, India
| | | | | | - Ravi Agrawal
- Shell India Markets Pvt. Ltd., Bengaluru, Karnataka 562149, India
| | | | - Varadharajan Srinivasan
- Department of Chemistry, Indian Institute of Science Education and Research Bhopal, Bhopal 462 066, India
| |
Collapse
|
6
|
Liu C, Batista ER, Aguirre NF, Yang P, Cawkwell MJ, Jakubikova E. SCC-DFTB Parameters for Fe-C Interactions. J Phys Chem A 2020; 124:9674-9682. [PMID: 33164521 DOI: 10.1021/acs.jpca.0c08202] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
We present an optimized density-functional tight-binding (DFTB) parameterization for iron-based complexes based on the popular trans3d set of parameters. The transferability of the original and optimized parameterizations is assessed using a set of 50 iron complexes, which include carbonyl, cyanide, polypyridine, and cyclometalated ligands. DFTB-optimized structures predicted using the trans3d parameters show a good agreement with both experimental crystal geometries and density functional theory (DFT)-optimized structures for Fe-N bond lengths. Conversely, Fe-C bond lengths are systematically overestimated. We improve the accuracy of Fe-C interactions by truncating the Fe-O repulsive potential and reparameterizing the Fe-C repulsive potential using a training set of six isolated iron complexes. The new trans3d*-LANLFeC parameter set can produce accurate Fe-C bond lengths in both geometry optimizations and molecular dynamics (MD) simulations, without significantly affecting the accuracy of Fe-N bond lengths. Moreover, the potential energy curves of Fe-C interactions are considerably improved. This improved parameterization may open the door to accurate MD simulations at the DFTB level of theory for large systems containing iron complexes, such as sensitizer-semiconductor assemblies in dye-sensitized solar cells, that are not easily accessible with DFT approaches because of the large number of atoms.
Collapse
Affiliation(s)
- Chang Liu
- Department of Chemistry, North Carolina State University, Raleigh, North Carolina 27606, United States.,Theoretical Division, Los Alamos National Laboratory, Los Alamos, New Mexico 87545, United States
| | - Enrique R Batista
- Theoretical Division, Los Alamos National Laboratory, Los Alamos, New Mexico 87545, United States
| | - Néstor F Aguirre
- Theoretical Division, Los Alamos National Laboratory, Los Alamos, New Mexico 87545, United States
| | - Ping Yang
- Theoretical Division, Los Alamos National Laboratory, Los Alamos, New Mexico 87545, United States
| | - M J Cawkwell
- Theoretical Division, Los Alamos National Laboratory, Los Alamos, New Mexico 87545, United States
| | - Elena Jakubikova
- Department of Chemistry, North Carolina State University, Raleigh, North Carolina 27606, United States
| |
Collapse
|
7
|
Comprehensive study to design advanced metal-carbide@garaphene and metal-carbide@iron oxide nanoparticles with tunable structure by the laser ablation in liquid. J Colloid Interface Sci 2019; 556:180-192. [DOI: 10.1016/j.jcis.2019.08.056] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2019] [Revised: 07/30/2019] [Accepted: 08/15/2019] [Indexed: 11/22/2022]
|
8
|
Reda M, Hansen HA, Vegge T. DFT Study of the Oxygen Reduction Reaction on Carbon-Coated Iron and Iron Carbide. ACS Catal 2018. [DOI: 10.1021/acscatal.8b02167] [Citation(s) in RCA: 39] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Affiliation(s)
- Mateusz Reda
- Department of Energy Conversion and Storage, Technical University of Denmark, DK-2800 Kgs. Lyngby, Denmark
| | - Heine Anton Hansen
- Department of Energy Conversion and Storage, Technical University of Denmark, DK-2800 Kgs. Lyngby, Denmark
| | - Tejs Vegge
- Department of Energy Conversion and Storage, Technical University of Denmark, DK-2800 Kgs. Lyngby, Denmark
| |
Collapse
|
9
|
Cilpa-Karhu G, Laasonen K. Computational exploration of Fe55@C240-catalyzed Fischer–Tropsch synthesis. Phys Chem Chem Phys 2018; 20:2741-2753. [DOI: 10.1039/c7cp06473j] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
DFT calculations showed possible hydrocarbon chain growth on Fe55@C240 preferentially via a CO insertion mechanism.
Collapse
Affiliation(s)
- Geraldine Cilpa-Karhu
- Department of Chemistry and Materials Science
- Aalto University
- COMP centre of Excellence in computational Nanoscience
- FI-OOO76 Aalto
- Finland
| | - Kari Laasonen
- Department of Chemistry and Materials Science
- Aalto University
- COMP centre of Excellence in computational Nanoscience
- FI-OOO76 Aalto
- Finland
| |
Collapse
|
10
|
Chen X, Zheng J, Zhong X, Jin Y, Zhuang G, Li X, Deng S, Wang JG. Tuning the confinement space of N-carbon shell-coated ruthenium nanoparticles: highly efficient electrocatalysts for hydrogen evolution reaction. Catal Sci Technol 2017. [DOI: 10.1039/c7cy01539a] [Citation(s) in RCA: 31] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Development of efficient and durable catalysts for the hydrogen evolution reaction (HER) in an alkaline system is vital for the transformation of renewable energy into hydrogen fuel.
Collapse
Affiliation(s)
- Xianlang Chen
- Institute of Industrial Catalysis
- College of Chemical Engineering
- Zhejiang University of Technology
- Hangzhou 310032
- China
| | - Jian Zheng
- Institute of Industrial Catalysis
- College of Chemical Engineering
- Zhejiang University of Technology
- Hangzhou 310032
- China
| | - Xing Zhong
- Institute of Industrial Catalysis
- College of Chemical Engineering
- Zhejiang University of Technology
- Hangzhou 310032
- China
| | - Yihan Jin
- Institute of Industrial Catalysis
- College of Chemical Engineering
- Zhejiang University of Technology
- Hangzhou 310032
- China
| | - Guilin Zhuang
- Institute of Industrial Catalysis
- College of Chemical Engineering
- Zhejiang University of Technology
- Hangzhou 310032
- China
| | - Xiaonian Li
- Institute of Industrial Catalysis
- College of Chemical Engineering
- Zhejiang University of Technology
- Hangzhou 310032
- China
| | - Shengwei Deng
- Institute of Industrial Catalysis
- College of Chemical Engineering
- Zhejiang University of Technology
- Hangzhou 310032
- China
| | - Jian-guo Wang
- Institute of Industrial Catalysis
- College of Chemical Engineering
- Zhejiang University of Technology
- Hangzhou 310032
- China
| |
Collapse
|
11
|
Varnell JA, Tse ECM, Schulz CE, Fister TT, Haasch RT, Timoshenko J, Frenkel AI, Gewirth AA. Identification of carbon-encapsulated iron nanoparticles as active species in non-precious metal oxygen reduction catalysts. Nat Commun 2016; 7:12582. [PMID: 27538720 PMCID: PMC4992170 DOI: 10.1038/ncomms12582] [Citation(s) in RCA: 135] [Impact Index Per Article: 16.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2016] [Accepted: 07/13/2016] [Indexed: 12/25/2022] Open
Abstract
The widespread use of fuel cells is currently limited by the lack of efficient and cost-effective catalysts for the oxygen reduction reaction. Iron-based non-precious metal catalysts exhibit promising activity and stability, as an alternative to state-of-the-art platinum catalysts. However, the identity of the active species in non-precious metal catalysts remains elusive, impeding the development of new catalysts. Here we demonstrate the reversible deactivation and reactivation of an iron-based non-precious metal oxygen reduction catalyst achieved using high-temperature gas-phase chlorine and hydrogen treatments. In addition, we observe a decrease in catalyst heterogeneity following treatment with chlorine and hydrogen, using Mössbauer and X-ray absorption spectroscopy. Our study reveals that protected sites adjacent to iron nanoparticles are responsible for the observed activity and stability of the catalyst. These findings may allow for the design and synthesis of enhanced non-precious metal oxygen reduction catalysts with a higher density of active sites. Determining active species in non-precious metal catalysts for the oxygen reduction reaction remains a challenge due to catalyst heterogeneity. Here the authors perform gas-phase treatments on an iron-based catalyst to allow the identification of carbon-encapsulated iron nanoparticles as the active species.
Collapse
Affiliation(s)
- Jason A Varnell
- Department of Chemistry, University of Illinois at Urbana-Champaign, Urbana, Illinois 61801, USA
| | - Edmund C M Tse
- Department of Chemistry, University of Illinois at Urbana-Champaign, Urbana, Illinois 61801, USA
| | - Charles E Schulz
- Department of Physics, Knox College, Galesburg, Illinois 61401, USA
| | - Tim T Fister
- Chemical Sciences and Engineering Division, Argonne National Laboratory, Argonne, Illinois 60439, USA
| | - Richard T Haasch
- Frederick Seitz Materials Research Laboratory, University of Illinois, Urbana, Illinois 61801, USA
| | - Janis Timoshenko
- Department of Physics, Yeshiva University, New York, New York 10016, USA
| | - Anatoly I Frenkel
- Department of Physics, Yeshiva University, New York, New York 10016, USA
| | - Andrew A Gewirth
- Department of Chemistry, University of Illinois at Urbana-Champaign, Urbana, Illinois 61801, USA.,International Institute for Carbon Neutral Energy Research (WPI-I2CNER), Kyushu University, Fukuoka 812-8581, Japan
| |
Collapse
|
12
|
Tavakkoli M, Kallio T, Reynaud O, Nasibulin AG, Johans C, Sainio J, Jiang H, Kauppinen EI, Laasonen K. Single-Shell Carbon-Encapsulated Iron Nanoparticles: Synthesis and High Electrocatalytic Activity for Hydrogen Evolution Reaction. Angew Chem Int Ed Engl 2015. [DOI: 10.1002/ange.201411450] [Citation(s) in RCA: 56] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
|
13
|
Tavakkoli M, Kallio T, Reynaud O, Nasibulin AG, Johans C, Sainio J, Jiang H, Kauppinen EI, Laasonen K. Single-Shell Carbon-Encapsulated Iron Nanoparticles: Synthesis and High Electrocatalytic Activity for Hydrogen Evolution Reaction. Angew Chem Int Ed Engl 2015; 54:4535-8. [DOI: 10.1002/anie.201411450] [Citation(s) in RCA: 245] [Impact Index Per Article: 27.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2014] [Indexed: 01/28/2023]
|