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Lu Y, Farrow MR, Fayon P, Logsdail AJ, Sokol AA, Catlow CRA, Sherwood P, Keal TW. Open-Source, Python-Based Redevelopment of the ChemShell Multiscale QM/MM Environment. J Chem Theory Comput 2019; 15:1317-1328. [PMID: 30511845 DOI: 10.1021/acs.jctc.8b01036] [Citation(s) in RCA: 31] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
ChemShell is a scriptable computational chemistry environment with an emphasis on multiscale simulation of complex systems using combined quantum mechanical and molecular mechanical (QM/MM) methods. Motivated by a scientific need to efficiently and accurately model chemical reactions on surfaces and within microporous solids on massively parallel computing systems, we present a major redevelopment of the ChemShell code, which provides a modern platform for advanced QM/MM embedding models. The new version of ChemShell has been re-engineered from the ground up with a new QM/MM driver module, an improved parallelization framework, new interfaces to high performance QM and MM programs, and a user interface written in the Python programming language. The redeveloped package is capable of performing QM/MM calculations on systems of significantly increased size, which we illustrate with benchmarks on zirconium dioxide nanoparticles of over 160000 atoms.
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Affiliation(s)
- You Lu
- Scientific Computing Department , STFC Daresbury Laboratory , Keckwick Lane, Daresbury , Warrington WA4 4AD , United Kingdom
| | - Matthew R Farrow
- Kathleen Lonsdale Materials Chemistry, Department of Chemistry , University College London , 20 Gordon Street , London WC1H 0AJ , United Kingdom
| | - Pierre Fayon
- Scientific Computing Department , STFC Daresbury Laboratory , Keckwick Lane, Daresbury , Warrington WA4 4AD , United Kingdom
| | - Andrew J Logsdail
- Kathleen Lonsdale Materials Chemistry, Department of Chemistry , University College London , 20 Gordon Street , London WC1H 0AJ , United Kingdom.,Cardiff Catalysis Institute, School of Chemistry , Cardiff University , Cardiff CF10 3AT , United Kingdom
| | - Alexey A Sokol
- Kathleen Lonsdale Materials Chemistry, Department of Chemistry , University College London , 20 Gordon Street , London WC1H 0AJ , United Kingdom
| | - C Richard A Catlow
- Kathleen Lonsdale Materials Chemistry, Department of Chemistry , University College London , 20 Gordon Street , London WC1H 0AJ , United Kingdom.,Cardiff Catalysis Institute, School of Chemistry , Cardiff University , Cardiff CF10 3AT , United Kingdom.,UK Catalysis Hub, Research Complex at Harwell, STFC Rutherford Appleton Laboratory , Harwell Science and Innovation Campus , Oxon OX11 0QX , United Kingdom
| | - Paul Sherwood
- Scientific Computing Department , STFC Daresbury Laboratory , Keckwick Lane, Daresbury , Warrington WA4 4AD , United Kingdom
| | - Thomas W Keal
- Scientific Computing Department , STFC Daresbury Laboratory , Keckwick Lane, Daresbury , Warrington WA4 4AD , United Kingdom
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Lazauskas T, Sokol AA, Buckeridge J, Catlow CRA, Escher SGET, Farrow MR, Mora-Fonz D, Blum VW, Phaahla TM, Chauke HR, Ngoepe PE, Woodley SM. Thermodynamically accessible titanium clusters TiN, N = 2–32. Phys Chem Chem Phys 2018; 20:13962-13973. [DOI: 10.1039/c8cp00406d] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
We have performed a genetic algorithm search on the tight-binding interatomic potential energy surface (PES) for small TiN (N = 2–32) clusters.
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Chutia A, Gibson EK, Farrow MR, Wells PP, Scanlon DO, Dimitratos N, Willock DJ, Catlow CRA. The adsorption of Cu on the CeO2(110) surface. Phys Chem Chem Phys 2017; 19:27191-27203. [DOI: 10.1039/c7cp04144f] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Abstract
A detailed density functional theory (DFT) study coupled with extended X-ray absorption fine structure (EXAFS) experiments on the geometrical and electronic properties of copper species on CeO2 surface demonstrating the effects of oxidation state and solvent environment.
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Affiliation(s)
| | - Emma K. Gibson
- UK Catalysis Hub
- RCaH
- Rutherford Appleton Laboratory
- Didcot
- UK
| | | | - Peter P. Wells
- UK Catalysis Hub
- RCaH
- Rutherford Appleton Laboratory
- Didcot
- UK
| | - David O. Scanlon
- Department of Chemistry
- University College London
- London
- UK
- Diamond Light Source Ltd
| | | | - David J. Willock
- Cardiff Catalysis Institute
- School of Chemistry
- Cardiff University
- Cardiff
- UK
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O'Malley AJ, Parker SF, Chutia A, Farrow MR, Silverwood IP, García-Sakai V, Catlow CRA. Room temperature methoxylation in zeolites: insight into a key step of the methanol-to-hydrocarbons process. Chem Commun (Camb) 2016; 52:2897-900. [DOI: 10.1039/c5cc08956e] [Citation(s) in RCA: 49] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Neutron scattering methods studying mobility and vibrational spectra observed complete room temperature methoxylation in a commercial sample of methanol-to-hydrocarbons (MTH) catalyst H-ZSM-5.
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Affiliation(s)
| | - Stewart F. Parker
- The UK Catalysis Hub
- Research Complex at Harwell
- Rutherford Appleton Laboratory
- Oxfordshire
- UK
| | - Arunabhiram Chutia
- The UK Catalysis Hub
- Research Complex at Harwell
- Rutherford Appleton Laboratory
- Oxfordshire
- UK
| | - Matthew R. Farrow
- Department of Chemistry
- Materials Chemistry
- University College London
- London
- UK
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Berger D, Logsdail AJ, Oberhofer H, Farrow MR, Catlow CRA, Sherwood P, Sokol AA, Blum V, Reuter K. Embedded-cluster calculations in a numeric atomic orbital density-functional theory framework. J Chem Phys 2015; 141:024105. [PMID: 25027997 DOI: 10.1063/1.4885816] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
We integrate the all-electron electronic structure code FHI-aims into the general ChemShell package for solid-state embedding quantum and molecular mechanical (QM/MM) calculations. A major undertaking in this integration is the implementation of pseudopotential functionality into FHI-aims to describe cations at the QM/MM boundary through effective core potentials and therewith prevent spurious overpolarization of the electronic density. Based on numeric atomic orbital basis sets, FHI-aims offers particularly efficient access to exact exchange and second order perturbation theory, rendering the established QM/MM setup an ideal tool for hybrid and double-hybrid level density functional theory calculations of solid systems. We illustrate this capability by calculating the reduction potential of Fe in the Fe-substituted ZSM-5 zeolitic framework and the reaction energy profile for (photo-)catalytic water oxidation at TiO2(110).
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Affiliation(s)
- Daniel Berger
- Chair for Theoretical Chemistry and Catalysis Research Center, Technische Universität München, Lichtenbergstr. 4, D-85747 Garching, Germany
| | - Andrew J Logsdail
- Department of Chemistry, Kathleen Lonsdale Materials Chemistry, University College London, 20 Gordon St., London WC1H 0AJ, United Kingdom
| | - Harald Oberhofer
- Chair for Theoretical Chemistry and Catalysis Research Center, Technische Universität München, Lichtenbergstr. 4, D-85747 Garching, Germany
| | - Matthew R Farrow
- Department of Chemistry, Kathleen Lonsdale Materials Chemistry, University College London, 20 Gordon St., London WC1H 0AJ, United Kingdom
| | - C Richard A Catlow
- Department of Chemistry, Kathleen Lonsdale Materials Chemistry, University College London, 20 Gordon St., London WC1H 0AJ, United Kingdom
| | - Paul Sherwood
- Scientific Computing Department, STFC Daresbury Laboratory, Daresbury, Warrington, United Kingdom
| | - Alexey A Sokol
- Department of Chemistry, Kathleen Lonsdale Materials Chemistry, University College London, 20 Gordon St., London WC1H 0AJ, United Kingdom
| | - Volker Blum
- Department of Mechanical Engineering and Materials Science, Duke University, Durham, North Carolina 27708, USA
| | - Karsten Reuter
- Chair for Theoretical Chemistry and Catalysis Research Center, Technische Universität München, Lichtenbergstr. 4, D-85747 Garching, Germany
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Sokol AA, Farrow MR, Buckeridge J, Logsdail AJ, Catlow CRA, Scanlon DO, Woodley SM. Double bubbles: a new structural motif for enhanced electron-hole separation in solids. Phys Chem Chem Phys 2014; 16:21098-105. [PMID: 24969266 DOI: 10.1039/c4cp01900h] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Electron-hole separation for novel composite systems comprised of secondary building units formed from different compounds is investigated with the aim of finding suitable materials for photocatalysis. Pure and mixed SOD and LTA superlattices of (ZnO)12 and (GaN)12, single-shell bubbles are constructed as well as core@shell single component frameworks composed of larger (ZnO)48 and (GaN)48 bubbles with each containing one smaller bubble. Enthalpies of formation for all systems are comparable with fullerenes. Hole and electron separation is achieved most efficiently by the edge sharing framework composed of (GaN)12@(ZnO)48 double bubbles, with the hole localised on the nitrogen within the smaller bubbles and the excited electron on zinc within the larger cages.
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Affiliation(s)
- A A Sokol
- Department of Chemistry, Kathleen Lonsdale Materials Chemistry, University College London, 20 Gordon Street, London WC1H 0AJ, UK.
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Farrow MR, Camp PJ, Dowding PJ, Lewtas K. The effects of surface curvature on the adsorption of surfactants at the solid–liquid interface. Phys Chem Chem Phys 2013; 15:11653-60. [DOI: 10.1039/c3cp50585e] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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