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Wei H, Li T, Yao K, Xuan Z. ReaxFF molecular dynamics simulations on thermal decomposition of RDX-based CMDB propellants. J Mol Model 2022; 28:388. [DOI: 10.1007/s00894-022-05377-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2022] [Accepted: 11/04/2022] [Indexed: 11/18/2022]
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3
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Abdelhalim AOE, Sharoyko VV, Ageev SV, Farafonov VS, Nerukh DA, Postnov VN, Petrov AV, Semenov KN. Graphene Oxide of Extra High Oxidation: A Wafer for Loading Guest Molecules. J Phys Chem Lett 2021; 12:10015-10024. [PMID: 34618465 DOI: 10.1021/acs.jpclett.1c02766] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
We present a new modification of graphene oxide with very high content (85 wt %) of oxygen-containing functional groups (hydroxy, epoxy, lactol, carboxyl, and carbonyl groups) that forms stable aqueous dispersion in up to 9 g·L-1 concentration solutions. A novel faster method of the synthesis is described that produces up to 1 kg of the material and allows controlling the particle size in solution. The synthesized compound was characterized by various physicochemical methods and molecular dynamics modeling, revealing a unique structure in the form of a multilayered wafer of several sheets thick, where each sheet is highly corrugated. The ragged structure of the sheets forms pockets with hindered mobility of water that leads to the possibility of trapping guest molecules.
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Affiliation(s)
- Abdelsattar O E Abdelhalim
- Institute of Chemistry, Saint Petersburg State University, 26 Universitetskii prospekt, Saint Petersburg, 198504, Russia
- Environmental Research Department, National Center for Social and Criminological Research (NCSCR), Giza 11561, Egypt
| | - Vladimir V Sharoyko
- Institute of Chemistry, Saint Petersburg State University, 26 Universitetskii prospekt, Saint Petersburg, 198504, Russia
- Pavlov First Saint Petersburg State Medical University, 6-8 L'va Tolstogo ulitsa, Saint Petersburg, 197022, Russia
- A. M. Granov Russian Research Centre for Radiology and Surgical Technologies, 70 Leningradskaya ulitsa, Saint Petersburg, 197758, Russia
| | - Sergei V Ageev
- Institute of Chemistry, Saint Petersburg State University, 26 Universitetskii prospekt, Saint Petersburg, 198504, Russia
- Pavlov First Saint Petersburg State Medical University, 6-8 L'va Tolstogo ulitsa, Saint Petersburg, 197022, Russia
| | - Vladimir S Farafonov
- V. N. Karazin Kharkiv National University, 4 Svobody ploshchad', Kharkiv, 61022, Ukraine
| | - Dmitry A Nerukh
- Department of Mathematics, Aston University, Birmingham, B4 7ET, The United Kingdom
| | - Viktor N Postnov
- Institute of Chemistry, Saint Petersburg State University, 26 Universitetskii prospekt, Saint Petersburg, 198504, Russia
| | - Andrey V Petrov
- Institute of Chemistry, Saint Petersburg State University, 26 Universitetskii prospekt, Saint Petersburg, 198504, Russia
| | - Konstantin N Semenov
- Institute of Chemistry, Saint Petersburg State University, 26 Universitetskii prospekt, Saint Petersburg, 198504, Russia
- Pavlov First Saint Petersburg State Medical University, 6-8 L'va Tolstogo ulitsa, Saint Petersburg, 197022, Russia
- A. M. Granov Russian Research Centre for Radiology and Surgical Technologies, 70 Leningradskaya ulitsa, Saint Petersburg, 197758, Russia
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4
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Urrego‐Ortiz R, Builes S, Calle‐Vallejo F. Fast Correction of Errors in the DFT‐Calculated Energies of Gaseous Nitrogen‐Containing Species. ChemCatChem 2021. [DOI: 10.1002/cctc.202100125] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Ricardo Urrego‐Ortiz
- Departamento de Ingeniería de Procesos Universidad EAFIT Carrera 49 No 7 sur – 50 050022 Medellín Colombia
| | - Santiago Builes
- Departamento de Ingeniería de Procesos Universidad EAFIT Carrera 49 No 7 sur – 50 050022 Medellín Colombia
| | - Federico Calle‐Vallejo
- Departament de Ciència de Materials i Química Física & Institut de Química Teòrica i Computacional (IQTCUB) Universitat de Barcelona Martí i Franquès 1 08028 Barcelona Spain
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Shah J, Gorky F, Psarras P, Seong B, Gómez‐Gualdrón DA, Carreon ML. Enhancement of the Yield of Ammonia by Hydrogen‐Sink Effect during Plasma Catalysis. ChemCatChem 2019. [DOI: 10.1002/cctc.201901769] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Javishk Shah
- Chemical and Biological Engineering Department Colorado School of Mines 1500 Illinois St. Golden CO–80401 USA
| | - Fnu Gorky
- Chemical and Biological Engineering Department South Dakota School of Mines & Technology 501 E Saint Joseph St. Rapid City SD–57701 USA
| | - Peter Psarras
- Chemical and Biological Engineering Department Colorado School of Mines 1500 Illinois St. Golden CO–80401 USA
| | - Bomsaerah Seong
- Chemical and Biological Engineering Department Colorado School of Mines 1500 Illinois St. Golden CO–80401 USA
| | - Diego A. Gómez‐Gualdrón
- Chemical and Biological Engineering Department Colorado School of Mines 1500 Illinois St. Golden CO–80401 USA
| | - Maria L. Carreon
- Chemical and Biological Engineering Department South Dakota School of Mines & Technology 501 E Saint Joseph St. Rapid City SD–57701 USA
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Furman D, Wales DJ. Transforming the Accuracy and Numerical Stability of ReaxFF Reactive Force Fields. J Phys Chem Lett 2019; 10:7215-7223. [PMID: 31682448 DOI: 10.1021/acs.jpclett.9b02810] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Molecular dynamics (MD) simulations provide an important link between theories and experiments. While ab initio methods can be prohibitively costly, the ReaxFF force field has facilitated in silico studies of chemical reactivity in complex, condensed-phase systems. However, the relatively poor energy conservation in ReaxFF MD has either limited the applicability to short time scales, in cases where energy propagation is important, or has required a continuous coupling of the system to a heat bath. In this study, we reveal the root cause of the unsatisfactory energy conservation, and offer a straightforward solution. The new scheme results in orders of magnitude improvement in energy conservation, numerical stability, and accuracy of ReaxFF force fields, compared to the previous state-of-the-art, at no additional cost. We anticipate that these improvements will open new avenues of research for more accurate reactive simulations in complex systems on long time scales.
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Affiliation(s)
- David Furman
- Department of Chemistry , University of Cambridge , Lensfield Road , Cambridge CB2 1EW , United Kingdom
- Division of Chemistry , NRCN , P.O. Box 9001, Beer-Sheva 84190 , Israel
| | - David J Wales
- Department of Chemistry , University of Cambridge , Lensfield Road , Cambridge CB2 1EW , United Kingdom
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Disrud B, Han Y, Gifford BJ, Kilin DS. Molecular dynamics of reactions between (4,0) zigzag carbon nanotube and hydrogen peroxide under extreme conditions. Mol Phys 2018. [DOI: 10.1080/00268976.2017.1420258] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Brendon Disrud
- Department of Chemistry and Biochemistry, North Dakota State University, Fargo, ND, USA
| | - Yulun Han
- Department of Chemistry and Biochemistry, North Dakota State University, Fargo, ND, USA
| | - Brendan J. Gifford
- Department of Chemistry and Biochemistry, North Dakota State University, Fargo, ND, USA
| | - Dmitri S. Kilin
- Department of Chemistry and Biochemistry, North Dakota State University, Fargo, ND, USA
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Duan X, Song M, Zhang L, Wang L, Zhu D, Chen Y. Hydroxylated carbon black as improved deposition support for discharge products in lithium air(oxygen)batteries. NEW J CHEM 2017. [DOI: 10.1039/c7nj02282d] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
The positive roles of the hydroxyls in improving the deposition of Li2O2and the performances of the Li–air battery are revealed.
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Affiliation(s)
- Xiaobo Duan
- Department of Materials Science & Engineering
- Xi’an University of Science and Technology
- Xi’an710054
- China
| | - Ming Song
- College of Chemistry and Chemical Engineering
- Xuzhou University of Technology
- Xuzhou 221111
- China
| | - Lei Zhang
- Department of Materials Science & Engineering
- Xi’an University of Science and Technology
- Xi’an710054
- China
| | - Lianli Wang
- Department of Materials Science & Engineering
- Xi’an University of Science and Technology
- Xi’an710054
- China
| | - Ding Zhu
- Department of Materials Science and Engineering
- Sichuan University
- Chengdu 610065
- China
| | - Yungui Chen
- Department of Materials Science and Engineering
- Sichuan University
- Chengdu 610065
- China
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