4.4 Article

Methane adsorption on graphene from first principles including dispersion interaction

Journal

SURFACE SCIENCE
Volume 605, Issue 7-8, Pages 746-749

Publisher

ELSEVIER
DOI: 10.1016/j.susc.2011.01.012

Keywords

Density functional calculations; Graphene; Alkanes; Physical adsorption

Funding

  1. Hochstleistungs-Rechenzentrum Stuttgart
  2. Paderborn Center for Parallel Computing PC2
  3. Deutsche Forschungsgemeinschaft

Ask authors/readers for more resources

The methane-graphene interaction is studied using density functional theory complemented with a semiempirical dispersion correction scheme (DET-D), an oh initio van der Waals density functional (vdW-DF) ansatz as well as using Moller Plesset perturbation theory (MP2). The adsorption energy of 0.17 eV and the molecular distance of 3.28 angstrom obtained from the MP2 calculations are close to the experimental data, while the vdW-DF scheme results either in a realistic adsorption energy or a realistic adsorption geometry, depending on the underlying exchange-correlation functional. The present implementation of DFT-D overbinds about as much as bare DFT calculations underbind, but yields a meaningful adsorption height. (C) 2011 Elsevier B.V. All rights reserved.

Authors

I am an author on this paper
Click your name to claim this paper and add it to your profile.

Reviews

Primary Rating

4.4
Not enough ratings

Secondary Ratings

Novelty
-
Significance
-
Scientific rigor
-
Rate this paper

Recommended

Article Materials Science, Multidisciplinary

Bound polaron formation in lithium niobate from ab initio molecular dynamics

Marvin Krenz, Uwe Gerstmann, Wolf Gero Schmidt

Summary: Polarons in lithium niobate play a crucial role in optical applications. Ab initio molecular dynamics simulations reveal that even at elevated temperatures, the average formation time of polarons does not exceed 100 femtoseconds.

APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING (2022)

Article Chemistry, Multidisciplinary

Electron-Nuclear Coherent Coupling and Nuclear Spin Readout through Optically Polarized VB- Spin States in hBN

Fadis F. Murzakhanov, Georgy Vladimirovich Mamin, Sergei Borisovich Orlinskii, Uwe Gerstmann, Wolf Gero Schmidt, Timur Biktagirov, Igor Aharonovich, Andreas Gottscholl, Andreas Sperlich, Vladimir Dyakonov, Victor A. Soltamov

Summary: In this study, we demonstrated the coherent coupling of negatively charged boron vacancies (V-B(-)) with surrounding nuclei in hexagonal boron nitride (hBN), which meets the basic requirements for quantum technology applications. We successfully achieved the readout of the V-B(-) spin coherence using various techniques and showed the characteristics of elongation of coherence time and modulation of Hahn-echo decay. Additionally, the DFT calculation confirmed the confined electron-nuclear coupling in the defective layer.

NANO LETTERS (2022)

Article Chemistry, Multidisciplinary

Water/InP(001) from Density Functional Theory

Isaac Azahel Ruiz Alvarado, Wolf Gero Schmidt

Summary: The interface between water and the In-rich InP(001) surface was studied using density functional theory. It was found that single water molecules preferentially attach to three-fold coordinated surface In atoms. Water dissociation is energetically favorable but hindered by an energy barrier that decreases with increasing water coverage. Water films on InP are stabilized by anchoring to surface-bonded hydroxyl groups and show similar structural properties to ice Ih with increasing thickness.

ACS OMEGA (2022)

Article Physics, Condensed Matter

Clean and Hydrogen-Adsorbed AlInP(001) Surfaces: Structures and Electronic Properties

Luis Joel Glahn, Isaac Azahel Ruiz Alvarado, Sergej Neufeld, Mohammad Amin Zare Pour, Agnieszka Paszuk, David Ostheimer, Sahar Shekarabi, Oleksandr Romanyuk, Dominik Christian Moritz, Jan Philipp Hofmann, Wolfram Jaegermann, Thomas Hannappel, Wolf Gero Schmidt

Summary: Total energy and electronic structure calculations based on density functional theory were performed to determine the atomic structure and electronic properties of clean and hydrogen-adsorbed Al0.5In0.5P(001) surfaces. It was found that most of the stable surfaces obey the electron-counting rule and exhibit surface atom dimerization. The formation of surface metal atomic wires was predicted under specific preparation conditions.

PHYSICA STATUS SOLIDI B-BASIC SOLID STATE PHYSICS (2022)

Article Nanoscience & Nanotechnology

P-Terminated InP (001) Surfaces: Surface Band Bending and Reactivity to Water

Dominik Christian Moritz, Isaac Azahel Ruiz Alvarado, Mohammad Amin Zare Pour, Agnieszka Paszuk, Tilo Friess, Erich Runge, Jan P. Hofmann, Thomas Hannappel, Wolf Gero Schmidt, Wolfram Jaegermann

Summary: Stable InP (001) surfaces have occupied valence bands and empty conduction bands, but experimental results show that the surface Fermi level is slightly below the midgap energy, causing surface band bending. Surface defects on P-rich InP (001) surfaces formed from hydrogen desorption are responsible for this discrepancy. These hydrogen-related defects are stable when water is adsorbed, as long as water does not dissociate. Therefore, water exposure does not affect the surface band bending on a flat InP (001) surface.

ACS APPLIED MATERIALS & INTERFACES (2022)

Article Crystallography

DC Ionic Conductivity in KTP and Its Isomorphs: Properties, Methods for Suppression, and Its Connection to Gray Tracking

Laura Padberg, Viktor Quiring, Adriana Bocchini, Matteo Santandrea, Uwe Gerstmann, Wolf Gero Schmidt, Christine Silberhorn, Christof Eigner

Summary: This study investigates the DC conductivity in potassium titanyl phosphate (KTP) and its isomorphs, and suggests a method to reduce the overall ionic conductivity in KTP. Gray tracking phenomena are observed in KTP, which leads to decreased ionic conductivity and additional optical absorption. A thermal treatment in an oxygen-rich atmosphere can eliminate gray tracking and restore the ionic conductivity and optical transmission. These findings can guide the selection of materials and treatments for specific applications.

CRYSTALS (2022)

Article Chemistry, Multidisciplinary

Diquat Based Dyes: A New Class of Photoredox Catalysts and Their Use in Aerobic Thiocyanation

Armin Meier, Sabuhi V. Badalov, Timur Biktagirov, Wolf Gero Schmidt, Rene Wilhelm

Summary: A series of new organic dyes incorporating diquat as an electron acceptor unit were synthesized and characterized. DFT calculations supported the analytical data. These dyes exhibited high photocatalytic activity under visible light, achieving isolated yields of up to 97% in the aerobic thiocyanation of indoles and pyrroles. Additionally, the photocatalytic activity of diquat and methyl viologen through formation of an electron donor acceptor complex was demonstrated.

CHEMISTRY-A EUROPEAN JOURNAL (2023)

Article Chemistry, Physical

Adsorption of Cyclic (Alkyl) (Amino) Carbenes on Monohydride Si(001) Surfaces: Interface Bonding and Electronic Properties

Lukas Meier, Wolf Gero Schmidt

Summary: The adsorption of cyclic (alkyl) (amino) carbenes on the Si(001) surface was studied using density-functional theory. Two adsorption mechanisms, carbene insertion in Si-H bonds and binding to a surface defect, were investigated. The stability of these configurations depended on the hydrogen chemical potential and the molecular side groups. Molecular diffusion was also influenced by the side groups. Adsorption configurations resulted in electronic states within the silicon band gap and a reduction in the work function.

JOURNAL OF PHYSICAL CHEMISTRY C (2023)

Article Physics, Condensed Matter

Third-Order Susceptibility of Lithium Niobate: Influence of Polarons and Bipolarons

Agnieszka L. Kozub, Uwe Gerstmann, Wolf Gero Schmidt

Summary: The third-order susceptibility Chi(3) of lithium niobate (LiNbO3) is calculated using a Berry-phase formulation of the dynamical polarization based on the electronic structure obtained within density-functional theory (DFT). Maximum |Chi zzzz(3)| values of the order of 10-19 m2 V-2 are calculated for photon energies between 1.2 and 2 eV, which are in the lower half of the optical bandgap of lithium niobate. Both free and bound electron (bi)polarons are found to significantly enhance the third-order susceptibility for photon energies below 1 eV.

PHYSICA STATUS SOLIDI B-BASIC SOLID STATE PHYSICS (2023)

Article Materials Science, Multidisciplinary

Rutile, anatase, brookite and titania thin film from Hubbard corrected and hybrid DFT

S. Badalov, A. Bocchini, R. Wilhelm, A. L. Kozub, U. Gerstmann, W. G. Schmidt

Summary: In this study, the structural, electronic, and optical properties of TiO2 crystals were calculated using Hubbard U correction and hybrid functional methods in density-functional theory. The results were compared with experimental observations, and it was found that the modified hybrid functionals and DFT + U method can provide accurate atomic structures and electronic structure data. The methods were also applied to study TiO2 amorphous ultra-thin films, and the agreement between the two methods was confirmed even for small details of the optical spectra.

MATERIALS RESEARCH EXPRESS (2023)

Article Physics, Applied

14N Hyperfine and nuclear interactions of axial and basal NV centers in 4H-SiC: A high frequency (94 GHz) ENDOR study

F. F. Murzakhanov, M. A. Sadovnikova, G. V. Mamin, S. S. Nagalyuk, H. J. von Bardeleben, W. G. Schmidt, T. Biktagirov, U. Gerstmann, V. A. Soltamov

Summary: In this study, the interaction parameters of nitrogen-vacancy (NV) centers in 4H silicon carbide were investigated using high-frequency electron-nuclear double resonance spectroscopy and first-principles density functional theory. It was found that different NV configurations have different electron-nuclear interaction parameters, suggesting that each NV center can act as a separate optically addressable qubit.

JOURNAL OF APPLIED PHYSICS (2023)

Article Crystallography

Vibrational Properties of the Potassium Titanyl Phosphate Crystal Family

Sergej Neufeld, Uwe Gerstmann, Laura Padberg, Christof Eigner, Gerhard Berth, Christine Silberhorn, Lukas M. Eng, Wolf Gero Schmidt, Michael Ruesing

Summary: This study calculated the phonon spectra of potassium titanyl phosphate and related compounds using density functional theory and compared them with experimental data, providing a more detailed assignment of spectral features. The findings improve the foundation for understanding the vibrational properties of the KTiOPO4 material family.

CRYSTALS (2023)

Article Chemistry, Physical

Synthesis of new graphene oxide/TiO2 and TiO2/SiO2 nanocomposites and their evaluation as photocatalysts

Marta Rosenthal, Timur Biktagirov, Wolf Gero Schmidt, Rene Wilhelm

Summary: This article discusses the synthesis and characterization of graphene oxide composites with P-25 and TiO2/SiO2 hybrid materials, as well as their photocatalytic behavior. Various synthetic routes were studied, including heat treatment and mechanical treatment with ultrasound. Different types of graphene oxide and TiO2 materials were used, and the influence of these factors on photocatalytic activity was analyzed.

CATALYSIS SCIENCE & TECHNOLOGY (2023)

Article Chemistry, Physical

Adsorption of Cyclic (Alkyl) (Amino) Carbenes on Monohydride Si(001) Surfaces: Interface Bonding and Electronic Properties

Lukas Meier, Wolf Gero Schmidt

Summary: The adsorption behavior of cyclic (alkyl) (amino) carbenes on the monohydride Si(001) surface is investigated using density functional theory. Two different adsorption mechanisms, carbene insertion in Si-H bonds and binding to a surface defect with missing hydrogen, are studied. The stability of these configurations depends on the hydrogen chemical potential and the molecular side groups. The molecular diffusion is also influenced by the side groups. Some adsorption configurations result in electronic states within the silicon bulk band gap. The work function is significantly reduced upon molecular adsorption.

JOURNAL OF PHYSICAL CHEMISTRY C (2023)

Article Nanoscience & Nanotechnology

P-Terminated InP (001) Surfaces: Surface Band Bending and Reactivity to Water

Dominik Christian Moritz, Isaac Azahel Ruiz Alvarado, Mohammad Amin Zare Pour, Agnieszka Paszuk, Tilo Friess, Erich Runge, Jan P. Hofmann, Thomas Hannappel, Wolf Gero Schmidt, Wolfram Jaegermann

Summary: Based on density functional theory calculations and experimental results, it is shown that surface defects formed on the InP (001) surface lead to band gap states, and these defects are stable for water adsorption, with significant water dissociation expected to occur at steps rather than terraces.

ACS APPLIED MATERIALS & INTERFACES (2022)

Article Chemistry, Physical

Exploring the effects of potassium-doping on the reactive oxygen species of CeO2 (110) for formaldehyde catalytic oxidation: A DFT study

Erhao Gao, Wenjing Feng, Qi Jin, Li Han, Yi He

Summary: The influence of K-doping on the reactive oxygen species and elementary reactions of HCHO catalytic oxidation was investigated using density functional theory (DFT). The introduction of K-doping changed the electronic structures of Ce and O, facilitating the adsorption and activation of HCHO and O2 molecules, enhancing lattice oxygen mobility, and reducing the energy barrier for HCHO oxidation. K-doping also promoted the formation of hydroxyl groups, facilitating HCHO adsorption and oxidation.

SURFACE SCIENCE (2024)

Article Chemistry, Physical

Adsorption mechanism of formaldehyde, ammonia and sulfur dioxide gases on inexpensive metal-doped ZnO surface: A DFT study

Hao Fu, Zhangliang Xu

Summary: In this study, the adsorption mechanisms and detection performance of formaldehyde, ammonia, and sulfur dioxide on undoped and metal-doped ZnO surfaces were investigated using density functional theory. The results showed that formaldehyde and ammonia were physically adsorbed on the undoped ZnO surface, while sulfur dioxide was weakly chemisorbed. The adsorption energy was enhanced when ZnO was doped with metals. These findings provide theoretical guidance for the application of ZnO substrate materials in gas sensitivity research.

SURFACE SCIENCE (2024)

Article Chemistry, Physical

Comparison of tunneling spectra for normal and charge density wave states in 1T-TiSe2

Atsushi Nomura, Tohru Kurosawa, Migaku Oda, Satoshi Demura, Shogo Kuwahara, Sora Kobayashi, Hideaki Sakata

Summary: The study investigates the tunneling spectra of 1T-TiSe2 in the CDW state and the dip structure below the Fermi level, aiming to determine whether this dip is a CDW gap. The answer to this question is crucial for understanding the driving mechanism of CDW.

SURFACE SCIENCE (2024)

Article Chemistry, Physical

Sn-mediated transformations on Si(111) surface: Reconstructions, Electromigration, Homoepitaxy

A. S. Petrov, D. I. Rogilo, A. I. Vergules, V. G. Mansurov, D. V. Sheglov, A. V. Latyshev

Summary: This study investigates Si mass transport and morphological transformations on the Si(111) surface during (root 3 x root 3)-Sn reconstruction formation and Si homoepitaxy. The research shows that the formation of different Sn phases at different temperatures affects the Si island nucleation and monatomic step shift, which in turn impact the morphology of the Sn/Si(111) interface. Electromigration-induced drift of disordered Sn domains leads to enhanced noncompensated Si mass transport and surface roughening.

SURFACE SCIENCE (2024)

Article Chemistry, Physical

Alteration of the inter-chain distance between Au atomic wires on Si(111) induced by Tl adsorption

D. V. Gruznev, L. V. Bondarenko, A. Y. Tupchaya, A. A. Yakovlev, A. N. Mihalyuk, A. V. Zotov, A. A. Saranin

Summary: Deposition of thallium (Tl) onto the Au/Si(111)5 x 2 reconstruction followed by annealing results in the formation of a surface structure with 4 x 2 periodicity. The immiscibility of Au and Tl leads to the migration of Tl atoms over the Si chains. Thallium donates electrons to the surface, converting the metallic surface into an insulating state and altering the inter-chain distance within the array of Au atomic wires.

SURFACE SCIENCE (2024)

Article Chemistry, Physical

Structural and electronic characterization of Pb adsorption on clean and Cr or Ni doped Fe(100) surface: An ab-initio study

Simone Giusepponi, Francesco Buonocore, Barbara Ferrucci, Massimo Celino

Summary: Using ab-initio calculations, the interaction between lead adatom and both clean and doped iron (100) surfaces was investigated. It was found that the lead adatom prefers to adsorb in the hollow site, which is more stable compared to the top and bridge sites, and in this position, it is energetically favorable over the iron adatom. Moreover, lead adsorbed in the hollow site of the iron (100) surface doped with chromium was found to create a more stable system compared to nickel-doped surfaces with an iron adatom in the same position. The study also explored inter-layer distances, bonding mechanisms, magnetic behaviors, and charge density differences. The results provide insights into the role of doping in the interaction between lead adatom and iron surface, and have implications for the analysis of corrosion processes caused by liquid lead.

SURFACE SCIENCE (2024)

Article Chemistry, Physical

Nitrogen vacancies in monolayer WSi2N4 for hydrogen evolution reaction: A first-principles study

Shuo Zhang, Jin-Ho Choi

Summary: The recent synthesis of two-dimensional layered WSi2N4 has attracted attention due to its potential applications. This study investigates the catalytic performance of WSi2N4 monolayers with nitrogen vacancies in the hydrogen evolution reaction using first-principles calculations. The results show that the defective WSi2N4 monolayers exhibit remarkably high catalytic activity comparable to platinum catalysts. Electronic structure calculations also reveal the emergence of spin-polarized states due to the introduction of nitrogen vacancies.

SURFACE SCIENCE (2024)

Article Chemistry, Physical

Efficient hydrogen production over Bi2Te3-modified TiO2 catalysts: A first principles study

Xiaoyan Yu, Xin Cao, Wei Kang, Shanhua Chen, Ao Jiang, Yuhao Luo, Wenwei Deng

Summary: First-principles calculations were used to investigate the electronic properties of a TiO2 heterostructure modified with Bi2Te3 co-catalyst. The study revealed that the Bi2Te3/TiO2 interface introduced optimal band offsets, effectively suppressing electron-hole recombination and enhancing the utilization efficiency of photo-generated carriers. Additionally, the Bi2Te3 co-catalyst introduced extra catalytic active sites, further boosting the photo-catalytic hydrogen evolution efficiency.

SURFACE SCIENCE (2024)

Article Chemistry, Physical

Hard X-ray photoelectron spectroscopy reveals self-organized structures of electrocatalytic nickel oxy-hydroxides

Filippo Longo, Emanuel Billeter, Selim Kazaz, Alessia Cesarini, Marin Nikolic, Aarati Chacko, Patrik Schmutz, Zbynek Novotny, Andreas Borgschulte

Summary: Alkaline water electrolysis is a simple and efficient method for renewable hydrogen production, utilizing cheap and abundant transition metals. The catalytic properties of Ni materials are enhanced by the formation of oxidized compounds on the surface. The high electrocatalytic activity of Ni (oxy)-hydroxides is directly related to water intercalation in the passivation layer, supporting the hypothesis of a water mediated OH- diffusion mechanism. The self-organization of the surface structure during passivation layer formation enables high electrode performance.

SURFACE SCIENCE (2024)

Article Chemistry, Physical

Subsurface nitrogen bonding and thermal stability of low-energy nitrogen implanted H-Diamond (100) surfaces studied by XPS and HREELS

Mohan Kumar Kuntumalla, Miriam Fischer, Alon Hoffman

Summary: By investigating the bonding, retention, and thermal stability of nitrogen in H-Diamond (100), it was found that nitrogen can partially recover its bonding with carbon atoms after high-temperature annealing, indicating a high thermal stability of nitrogen in diamond.

SURFACE SCIENCE (2024)

Article Chemistry, Physical

The adsorption behaviors of Cl2 on TiC (100) surface: A density functional theory study

Dong Yue, Liangying Wen, Rong Chen, Jianxin Wang, Zhongqing Yang

Summary: The adsorption behavior of Cl2 molecules on the TiC surface and the formation and transfer of reaction products were studied using first-principles ab initio calculations. The results show that the Cl atoms bonded to the surface Ti atoms are more stable, and the TiCl3 intermediate is easier to form than the TiCl2 intermediate.

SURFACE SCIENCE (2024)

Article Chemistry, Physical

Metal-Organic frameworks with two different metal centers for thiophene adsorption: Synthesis, characterization and mechanism analysis

Yatao Wang, Peng Zhang, Hongjuan Li, Qiuju Xu, Shujun Liu, Xiaopeng Liu, Xuehua Guo, Yitao Li, Jinzhang Liu, Sen Dong, Zhi Wei Seh, Qianfan Zhang

Summary: In this study, the adsorption performance of two types of metal-organic frameworks (MOFs) for thiophene and benzene was experimentally investigated. The results showed that IZE-1 exhibited high selectivity and superior adsorption capacity for thiophene, especially at low concentrations. First-principles calculations and molecular dynamics simulations provided insights into the mechanism of thiophene adsorption and the high selectivity observed. This research demonstrates the potential of MOFs for thiophene adsorption, particularly at high concentrations.

SURFACE SCIENCE (2024)