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Chaudhuri S, Logsdail AJ, Maurer RJ. Stability of Single Gold Atoms on Defective and Doped Diamond Surfaces. THE JOURNAL OF PHYSICAL CHEMISTRY. C, NANOMATERIALS AND INTERFACES 2023; 127:16187-16203. [PMID: 37609382 PMCID: PMC10440818 DOI: 10.1021/acs.jpcc.3c03900] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 06/09/2023] [Revised: 07/20/2023] [Indexed: 08/24/2023]
Abstract
Polycrystalline boron-doped diamond (BDD) is widely used as a working electrode material in electrochemistry, and its properties, such as its stability, make it an appealing support material for nanostructures in electrocatalytic applications. Recent experiments have shown that electrodeposition can lead to the creation of stable small nanoclusters and even single gold adatoms on the BDD surfaces. We investigate the adsorption energy and kinetic stability of single gold atoms adsorbed onto an atomistic model of BDD surfaces by using density functional theory. The surface model is constructed using hybrid quantum mechanics/molecular mechanics embedding techniques and is based on an oxygen-terminated diamond (110) surface. We use the hybrid quantum mechanics/molecular mechanics method to assess the ability of different density functional approximations to predict the adsorption structure, energy, and barrier for diffusion on pristine and defective surfaces. We find that surface defects (vacancies and surface dopants) strongly anchor adatoms on vacancy sites. We further investigated the thermal stability of gold adatoms, which reveals high barriers associated with lateral diffusion away from the vacancy site. The result provides an explanation for the high stability of experimentally imaged single gold adatoms on BDD and a starting point to investigate the early stages of nucleation during metal surface deposition.
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Affiliation(s)
- Shayantan Chaudhuri
- Department
of Chemistry, University of Warwick, Coventry CV4 7AL, United Kingdom
- Centre
for Doctoral Training in Diamond Science and Technology, University of Warwick, Coventry CV4 7AL, United Kingdom
| | - Andrew J. Logsdail
- Cardiff
Catalysis Institute, School of Chemistry, Cardiff University, Cardiff CF10 3AT, United
Kingdom
| | - Reinhard J. Maurer
- Department
of Chemistry, University of Warwick, Coventry CV4 7AL, United Kingdom
- Department
of Physics, University of Warwick, Coventry CV4 7AL, United Kingdom
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SATO M, SUZUKI F, JIMBO K, TAKEDA K. Electronic Structures of Graphene and Silicene HavingSeveral Kinds of Imperfections such as Atomic Vacancies andHeteroatoms Replacement. JOURNAL OF COMPUTER CHEMISTRY-JAPAN 2019. [DOI: 10.2477/jccj.2019-0009] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- Masako SATO
- Faculty of Science and Engineering, Waseda University, Shinjuku, Tokyo 169-8555, Japan
| | - Fumiya SUZUKI
- Faculty of Science and Engineering, Waseda University, Shinjuku, Tokyo 169-8555, Japan
| | - Kae JIMBO
- Faculty of Science and Engineering, Waseda University, Shinjuku, Tokyo 169-8555, Japan
| | - Kyozaburo TAKEDA
- Faculty of Science and Engineering, Waseda University, Shinjuku, Tokyo 169-8555, Japan
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Liu J, Liang T, Wang C, Lai W. Oxygen adsorption and CO desorption behavior of B- and N-doped vacancy defected nuclear graphite by DFT study. RSC Adv 2017. [DOI: 10.1039/c6ra26103e] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Oxygen adsorption and desorption of gasification products are two factors that influence graphite oxidation behavior.
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Affiliation(s)
- Juan Liu
- State Key Laboratory of New Ceramics and Fine Processing
- Institute of Nuclear and New Energy Technology
- Tsinghua University
- Beijing
- China
| | - Tongxiang Liang
- School of Materials Science and Engineering
- Jiangxi University of Science and Technology
- Ganzhou
- China
| | - Chen Wang
- State Key Laboratory of New Ceramics and Fine Processing
- Institute of Nuclear and New Energy Technology
- Tsinghua University
- Beijing
- China
| | - Wenzheng Lai
- School of Materials Science and Engineering
- Tsinghua University
- Beijing
- China
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Pizzochero M, Leenaerts O, Partoens B, Martinazzo R, Peeters FM. Hydrogen adsorption on nitrogen and boron doped graphene. JOURNAL OF PHYSICS. CONDENSED MATTER : AN INSTITUTE OF PHYSICS JOURNAL 2015; 27:425502. [PMID: 26439097 DOI: 10.1088/0953-8984/27/42/425502] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
Hydrogen adsorption on boron and nitrogen doped graphene is investigated in detail by means of first-principles calculations. A comprehensive study is performed of the structural, electronic, and magnetic properties of chemisorbed hydrogen atoms and atom pairs near the dopant sites. The main effect of the substitutional atoms is charge doping which is found to greatly affect the adsorption process by increasing the binding energy at the sites closest to the substitutional species. It is also found that doping does not induce magnetism despite the odd number of electrons per atom introduced by the foreign species, and that it quenches the paramagnetic response of chemisorbed H atoms on graphene. Overall, the effects are similar for B and N doping, with only minor differences in the adsorption energetics due to different sizes of the dopant atoms and the accompanying lattice distortions.
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Affiliation(s)
- Michele Pizzochero
- Dipartimento di Chimica, Università degli Studi di Milano, via Golgi 19, 20133 Milan, Italy
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Gong PL, Huang LF, Zheng XH, Cao TF, Song LL, Zeng Z. The mechanisms of impurity–impurity and impurity–matrix interactions in B/N-doped graphene. Chem Phys Lett 2014. [DOI: 10.1016/j.cplett.2014.05.008] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Beckner M, Dailly A. Adsorption Enthalpy Calculations of Hydrogen Adsorption at Ambient Temperature and Pressures Exceeding 300 bar. ACTA ACUST UNITED AC 2013. [DOI: 10.4236/ajac.2013.410a3002] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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Kuchta B, Firlej L, Mohammadhosseini A, Boulet P, Beckner M, Romanos J, Pfeifer P. Hypothetical high-surface-area carbons with exceptional hydrogen storage capacities: open carbon frameworks. J Am Chem Soc 2012; 134:15130-7. [PMID: 22897685 DOI: 10.1021/ja306726u] [Citation(s) in RCA: 60] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
A class of high-surface-area carbon hypothetical structures has been investigated that goes beyond the traditional model of parallel graphene sheets hosting layers of physisorbed hydrogen in slit-shaped pores of variable width. The investigation focuses on structures with locally planar units (unbounded or bounded fragments of graphene sheets), and variable ratios of in-plane to edge atoms. Adsorption of molecular hydrogen on these structures was studied by performing grand canonical Monte Carlo simulations with appropriately chosen adsorbent-adsorbate interaction potentials. The interaction models were tested by comparing simulated adsorption isotherms with experimental isotherms on a high-performance activated carbon with well-defined pore structure (approximately bimodal pore-size distribution), and remarkable agreement between computed and experimental isotherms was obtained, both for gravimetric excess adsorption and for gravimetric storage capacity. From this analysis and the simulations performed on the new structures, a rich spectrum of relationships between structural characteristics of carbons and ensuing hydrogen adsorption (structure-function relationships) emerges: (i) Storage capacities higher than in slit-shaped pores can be obtained by fragmentation/truncation of graphene sheets, which creates surface areas exceeding of 2600 m(2)/g, the maximum surface area for infinite graphene sheets, carried mainly by edge sites; we call the resulting structures open carbon frameworks (OCF). (ii) For OCFs with a ratio of in-plane to edge sites ≈1 and surface areas 3800-6500 m(2)/g, we found record maximum excess adsorption of 75-85 g of H(2)/kg of C at 77 K and record storage capacity of 100-260 g of H(2)/kg of C at 77 K and 100 bar. (iii) The adsorption in structures having large specific surface area built from small polycyclic aromatic hydrocarbons cannot be further increased because their energy of adsorption is low. (iv) Additional increase of hydrogen uptake could potentially be achieved by chemical substitution and/or intercalation of OCF structures, in order to increase the energy of adsorption. We conclude that OCF structures, if synthesized, will give hydrogen uptake at the level required for mobile applications. The conclusions define the physical limits of hydrogen adsorption in carbon-based porous structures.
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Affiliation(s)
- Bogdan Kuchta
- Department of Physics and Astronomy, University of Missouri, Columbia, Missouri 65211, USA.
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Kuchta B, Firlej L, Roszak S, Pfeifer P. A review of boron enhanced nanoporous carbons for hydrogen adsorption: numerical perspective. ADSORPTION 2010. [DOI: 10.1007/s10450-010-9235-0] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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Kuchta B, Firlej L, Cepel R, Pfeifer P, Wexler C. Structural and energetic factors in designing a nanoporous sorbent for hydrogen storage. Colloids Surf A Physicochem Eng Asp 2010. [DOI: 10.1016/j.colsurfa.2010.01.020] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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Zhang H, Smith SC, Nanbu S, Nakamura H. First-Principle Study of Atomic Hydrogen Interaction with a Fluorinated Corannulene Radical. Aust J Chem 2010. [DOI: 10.1071/ch09442] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
In this work, we study fluorination effects on atomic hydrogen interactions with the fluorinated corannulene radical (C15H10F5), which was built as a model for a partially fluorinated nanotube (or fullerene). Complete active space self-consistent field and multi-reference configuration interaction methods are employed to calculate the potential energy surfaces for both ground and excited electronic states, and the R-matrix quantum dynamics method is used to investigate the atomic hydrogen transmission and reflection dynamics through the five-membered ring in the fluorinated corannulene radical, which includes resonance effects as well as non-adiabatic transitions between the ground and excited electronic states. We also investigate hydrogen adsorptions at two sites in the middle five-membered ring, namely, on top of a carbon atom and in the middle of a carbon–carbon bond. We found that on carbon-top site, the adsorption is almost barrierless, whereas in the middle bond site, there is a barrier to hydrogen adsorption.
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Burress J, Kraus M, Beckner M, Cepel R, Suppes G, Wexler C, Pfeifer P. Hydrogen storage in engineered carbon nanospaces. NANOTECHNOLOGY 2009; 20:204026. [PMID: 19420674 DOI: 10.1088/0957-4484/20/20/204026] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
It is shown how appropriately engineered nanoporous carbons provide materials for reversible hydrogen storage, based on physisorption, with exceptional storage capacities (approximately 80 g H2/kg carbon, approximately 50 g H2/liter carbon, at 50 bar and 77 K). Nanopores generate high storage capacities (a) by having high surface area to volume ratios, and (b) by hosting deep potential wells through overlapping substrate potentials from opposite pore walls, giving rise to a binding energy nearly twice the binding energy in wide pores. Experimental case studies are presented with surface areas as high as 3100 m(2) g(-1), in which 40% of all surface sites reside in pores of width approximately 0.7 nm and binding energy approximately 9 kJ mol(-1), and 60% of sites in pores of width>1.0 nm and binding energy approximately 5 kJ mol(-1). The findings, including the prevalence of just two distinct binding energies, are in excellent agreement with results from molecular dynamics simulations. It is also shown, from statistical mechanical models, that one can experimentally distinguish between the situation in which molecules do (mobile adsorption) and do not (localized adsorption) move parallel to the surface, how such lateral dynamics affects the hydrogen storage capacity, and how the two situations are controlled by the vibrational frequencies of adsorbed hydrogen molecules parallel and perpendicular to the surface: in the samples presented, adsorption is mobile at 293 K, and localized at 77 K. These findings make a strong case for it being possible to significantly increase hydrogen storage capacities in nanoporous carbons by suitable engineering of the nanopore space.
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Affiliation(s)
- Jacob Burress
- Alliance for Collaborative Research in Alternative Fuel Technology, University of Missouri, Columbia, MO 65211, USA
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Zhang H, Smith SC, Nanbu S, Nakamura H. Quantum mechanical study of atomic hydrogen interaction with a fluorinated boron-substituted coronene radical. JOURNAL OF PHYSICS. CONDENSED MATTER : AN INSTITUTE OF PHYSICS JOURNAL 2009; 21:144209. [PMID: 21825326 DOI: 10.1088/0953-8984/21/14/144209] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
In this work we study the transmission of atomic hydrogen across a fluorinated boron-substituted coronene radical (C(19)H(12)BF(6)) as a model for partially fluorinated and boron-doped nanotubes or fullerenes. Complete active space self-consistent field (CASSCF) and multi-reference configuration interaction (MRCI) methods are employed to calculate the potential energy surfaces for both ground and excited electronic states, and one-dimensional R-matrix propagation is utilized to investigate the transmission/reflection dynamics of atomic hydrogen, through the central six-member ring of the fluorinated boron-substituted coronene radical. The quantum scattering includes resonance effects as well as non-adiabatic transitions between the ground and excited electronic states. Within the sudden approximation, both centre and off-centre approach trajectories have been investigated. Implications for atomic hydrogen encapsulation by carbon nanotube and fullerene are discussed.
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Affiliation(s)
- Hong Zhang
- Centre for Computational Molecular Science, AIBN Building (#75), The University of Queensland, Qld 4072, Brisbane, Australia. Research Institute for Information Technology, Kyushu University, 6-10-1 Hakozaki, Higashi-ku, Fukuoka 812-8581, Japan
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Miwa RH, Martins TB, Fazzio A. Hydrogen adsorption on boron doped graphene: an ab initio study. NANOTECHNOLOGY 2008; 19:155708. [PMID: 21825632 DOI: 10.1088/0957-4484/19/15/155708] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
(i) The electronic and structural properties of boron doped graphene sheets, and (ii) the chemisorption processes of hydrogen adatoms on the boron doped graphene sheets have been examined by ab initio total energy calculations. In (i) we find that the structural deformations are very localized around the boron substitutional sites, and in accordance with previous studies (Endo et al 2001 J. Appl. Phys. 90 5670) there is an increase of the electronic density of states near the Fermi level. Our simulated scanning tunneling microscope (STM) images, for occupied states, indicate the formation of bright (triangular) spots lying on the substitutional boron (center) and nearest-neighbor carbon (edge) sites. Those STM images are attributed to the increase of the density of states within an energy interval of 0.5 eV below the Fermi level. For a boron concentration of ∼2.4%, we find that two boron atoms lying on the opposite sites of the same hexagonal ring (B1-B2 configuration) represents the energetically most stable configuration, which is in contrast with previous theoretical findings. Having determined the energetically most stable configuration for substitutional boron atoms on graphene sheets, we next considered the hydrogen adsorption process as a function of the boron concentration, (ii). Our calculated binding energies indicate that the C-H bonds are strengthened near boron substitutional sites. Indeed, the binding energy of hydrogen adatoms forming a dimer-like structure on the boron doped B1-B2 graphene sheet is higher than the binding energy of an isolated H(2) molecule. Since the formation of the H dimer-like structure may represent the initial stage of the hydrogen clustering process on graphene sheets, we can infer that the formation of H clusters is quite likely not only on clean graphene sheets, which is in consonance with previous studies (Hornekær et al 2006 Phys. Rev. Lett. 97 186102), but also on B1-B2 boron doped graphene sheets. However, for a low concentration of boron atoms, the formation of H dimer structures is not expected to occur near a single substitutional boron site. That is, the formation (or not) of H clusters on graphene sheets can be tuned by the concentration of substitutional boron atoms.
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Affiliation(s)
- R H Miwa
- Instituto de Física, Universidade Federal de Uberlândia, Caixa Postal 593, 38400-902, Uberlândia, MG, Brazil
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Kerwin J, Jackson B. The sticking of H and D atoms on a graphite (0001) surface: The effects of coverage and energy dissipation. J Chem Phys 2008; 128:084702. [DOI: 10.1063/1.2868771] [Citation(s) in RCA: 56] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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15
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Zhang C, Alavi A. Hydrogen absorption in bulk BC3: A first-principles study. J Chem Phys 2007; 127:214704. [DOI: 10.1063/1.2802338] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Kerwin J, Sha X, Jackson B. Classical Studies of H Atom Trapping on a Graphite Surface†. J Phys Chem B 2006; 110:18811-7. [PMID: 16986871 DOI: 10.1021/jp057136+] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
The trapping and sticking of H and D atoms on the graphite (0001) surface is examined over the energy range 0.1-0.9 eV. Total electronic energy calculations based on density functional theory are used to develop a potential energy surface that allows for the full three-dimensional motion of the incident atom and the reconstruction of the bonding carbon atom, which must pucker out of the surface to form a stable bond. Classical methods are used to compute trapping cross sections as a function of incident energy. The C-H bond, once formed, rapidly dissociates without a mechanism to dissipate its excess energy. However, a number of long-lived trapping resonances exist, and for impact parameters below 1 A or so, several percent of the incident H atoms can remain trapped for 1 ps or more. This long-time trapping probability increases significantly when additional lattice degrees of freedom are added to carry energy away from the C-H stretch. Trapping can also increase with an increasing collision impact parameter, as H vibrations parallel to the surface become excited, leaving less energy in the C-H stretch. The trapping cross section at 1 ps reaches a maximum of 0.2 A2 for an H atom energy of 0.3 eV. Assuming that any atoms remaining trapped after 1 ps fully relax and stick, we estimate a lower bound for the sticking probability of H and D to be 0.024 and 0.050, respectively, about an order of magnitude below the experimental values.
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Affiliation(s)
- Jay Kerwin
- Department of Chemistry, University of Massachusetts, Amherst, Massachusetts 01003, USA
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Unterreiner BV, Carissan Y, Klopper W. Density Functional Study of Methyl Chemisorption on Polycyclic Aromatic Hydrocarbons. Chemphyschem 2006; 7:1311-21. [PMID: 16671151 DOI: 10.1002/cphc.200500673] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
The reactions of methyl radicals with large (up to C(96)H(24)) polycyclic aromatic hydrocarbons (PAHs) are studied by density functional calculations to shed light on the experimentally observed deposition of carbon on highly oriented pyrolytic graphite (HOPG), which occurs when hot HOPG (decorated by nanometre-sized defects) is exposed to methyl radicals. The equilibrium structures of the reaction products, together with transition structures for PAHs up to the size of phenanthroperylene, are determined using the density functionals B3LYP, TPSSh, BP86 and TPSS. The structures are analysed by computing the pi orbital axis vector (POAV) and the altitude of the reactive carbon above the molecular plane of the PAH. The strongest C-CH(3) bonds are found at the edges of the PAHs, where the s character of the C orbital involved in the bond is roughly 25 % (sp(3) hybrid orbital). Carbon atoms inside the PAH form bonds with the methyl radical through atomic orbitals with about 16 % s character in the POAV analysis. These bonds are much weaker than those at the edges of the PAH, while the reactive carbon has moved about 40 pm above the molecular plane. At the edges, the PAH carbon atoms do not leave the molecular plane to this extent. The computed barrier heights and geometrical parameters of the transition structures are in agreement with Hammond's postulate, and the relative energies of all of the equilibrium structures can be rationalized by Hückel molecular orbital (HMO) theory.
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Affiliation(s)
- Barbara V Unterreiner
- Lehrstuhl für Theoretische Chemie, Institut für Physikalische Chemie, Universität Karlsruhe TH, 76128 Karlsruhe, Germany.
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Ferro Y, Marinelli F, Jelea A, Allouche A. Adsorption, diffusion, and recombination of hydrogen on pure and boron-doped graphite surfaces. J Chem Phys 2004; 120:11882-8. [PMID: 15268222 DOI: 10.1063/1.1738636] [Citation(s) in RCA: 55] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Boron inserted as impurity by substitution of carbon atoms in graphite is known to modify the reactivity of the surface in interaction with hydrogen. Boron induces a better H retention capability in graphite while it makes easier the recombination into molecular hydrogen under heating in thermal-desorption experimental conditions. It has already been calculated that boron modifies the electronic structure of the surface, which results in an increase of the adsorption energy for H. This result seems in good agreement with the better retention for H in doped graphite, but contradictory with the easier recombination observed. The aim of this work is to dismiss this contradiction by elucidating the modifications induced by boron in the recombination mechanism. We studied the diffusion of H on pure and boron-doped graphite in the density functional theory framework. We determined a diffusionlike mechanism leading to molecular hydrogen formation. Finally, we have shown the fundamental modifications induced by boron on the [0001] graphite surface reactivity. From these calculations it stands out that recombination is the result of desorption on pure graphite and diffusion on B-doped surfaces, while the activation energy for the rate limiting step is half reduced by boron. The results are compared to experimental observations. The connection between the cluster and periodic quantum modes for graphite is also discussed.
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Affiliation(s)
- Y Ferro
- Physique des Interactions Ioniques et Moléculaires, CNRS and Université de Provence (UMR 6633), Campus Universitaire de Saint Jérôme, Case 242, 13397 Marseille Cedex 20 France.
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