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Kr. Saha S, Murmu M, Chandra Murmu N, Banerjee P. Benzothiazolylhydrazine azomethine derivatives for efficient corrosion inhibition of mild steel in acidic environment: Integrated experimental and density functional theory cum molecular dynamics simulation approach. J Mol Liq 2022. [DOI: 10.1016/j.molliq.2022.120033] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Sharma S, Ganjoo R, Kr. Saha S, Kang N, Thakur A, Assad H, Kumar A. Investigation of inhibitive performance of Betahistine dihydrochloride on mild steel in 1 M HCl solution. J Mol Liq 2022. [DOI: 10.1016/j.molliq.2021.118383] [Citation(s) in RCA: 26] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Synthesis, characterization and theoretical exploration of pyrene based Schiff base molecules as corrosion inhibitor. J Mol Struct 2021. [DOI: 10.1016/j.molstruc.2021.131098] [Citation(s) in RCA: 34] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Kumar G, VanGessel FG, Munday LB, Chung PW. 3-Phonon Scattering Pathways for Vibrational Energy Transfer in Crystalline RDX. J Phys Chem A 2021; 125:7723-7734. [PMID: 34338515 DOI: 10.1021/acs.jpca.1c03225] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Abstract
A long-held belief is that shock energy induces initiation of an energetic material through an energy up-pumping mechanism involving phonon scattering through doorway modes. In this paper, a Fermi's golden rule-based 3-phonon theoretical analysis of energy up-pumping in RDX is presented that considers possible doorway pathways through which energy transfer occurs. On average, modes with frequencies up to 102 cm-1 scatter quickly and transfer over 99% of the vibrational energy to other low-frequency modes up to 102 cm-1 within 0.16 ps. These low-frequency modes scatter less than 0.5% of the vibrational energy directly to modes with significant nitrogen-nitrogen (NN) activity. The midfrequency modes from 102 to 1331 cm-1 further up-pump the energy to these modes within 5.6 ps. The highest-frequency modes scatter and redistribute a small fraction of the vibrational energy to all other modes, which last over 2000 ps. The midfrequency modes between 457 and 462 cm-1 and between 831 and 1331 cm-1 are the most critical for vibrational heating of the NN modes and phenomena, leading to initiation in energetics. In contrast, modes stimulated by the shock with frequencies up to 102 cm-1 dominate vibrational cooling of the NN modes.
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Affiliation(s)
- Gaurav Kumar
- Center for Engineering Concepts Development, Department of Mechanical Engineering, University of Maryland, College Park 20742, United States
| | - Francis G VanGessel
- US Naval Surface Warfare Center Indian Head Division, Indian Head, Maryland 20640, United States
| | - Lynn B Munday
- Idaho National Laboratory, US Department of Energy, Idaho Falls, Idaho 83415, United States
| | - Peter W Chung
- Center for Engineering Concepts Development, Department of Mechanical Engineering, University of Maryland, College Park 20742, United States
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Adsorption and inhibition mechanism of efficient and environment friendly corrosion inhibitor for mild steel: Experimental and theoretical study. J Mol Liq 2021. [DOI: 10.1016/j.molliq.2021.116634] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Aslam R, Mobin M, Huda, Murmu M, Banerjee P, Aslam J. L-Alanine methyl ester nitrate ionic liquid: synthesis, characterization and anti-corrosive application. J Mol Liq 2021. [DOI: 10.1016/j.molliq.2021.116469] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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Banerjee T, Samanta A. Chemical computational approaches for optimization of effective surfactants in enhanced oil recovery. PHYSICAL SCIENCES REVIEWS 2021. [DOI: 10.1515/psr-2020-0098] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Abstract
Abstract
The surfactant flooding becomes an attractive method among several Enhanced Oil Recovery (EOR) processes to improve the recovery of residual oil left behind in the reservoir after secondary oil recovery process. The designing of a new effective surfactant is a comparatively complex and often time consuming process as well as cost-effective due to its dependency on the crude oil and reservoir properties. An alternative chemical computational approach is focused in this article to optimize the performance of effective surfactant system for EOR. The molecular dynamics (MD), dissipative particle dynamics (DPD) and density functional theory (DFT) simulations are mostly used chemical computational approaches to study the behaviour in multiple phase systems like surfactant/oil/brine. This article highlighted a review on the impact of surfactant head group structure on oil/water interfacial property like interfacial tensions, interface formation energy, interfacial thickness by MD simulation. The effect of entropy in micelle formation has also discussed through MD simulation. The polarity, dipole moment, charge distribution and molecular structure optimization have been illustrated by DFT. A relatively new coarse-grained method, DPD is also emphasized the phase behaviour of surfactant/oil/brine as well as polymer-surfactant complex system.
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Affiliation(s)
- Tandrima Banerjee
- Department of Chemical Sciences , Indian Institute of Science Education and Research (IISER) Kolkata , West Bengal 741246 , India
| | - Abhijit Samanta
- School of Engineering and Applied Sciences , The Neotia University , Sarisha , West Bengal 743368 , India
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Sengupta S, Murmu M, Murmu NC, Banerjee P. Adsorption of redox-active Schiff bases and corrosion inhibiting property for mild steel in 1 molL−1 H2SO4: Experimental analysis supported by ab initio DFT, DFTB and molecular dynamics simulation approach. J Mol Liq 2021. [DOI: 10.1016/j.molliq.2020.115215] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
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Murmu M, Saha SK, Bhaumick P, Murmu NC, Hirani H, Banerjee P. Corrosion inhibition property of azomethine functionalized triazole derivatives in 1 mol L−1 HCl medium for mild steel: Experimental and theoretical exploration. J Mol Liq 2020. [DOI: 10.1016/j.molliq.2020.113508] [Citation(s) in RCA: 40] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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Study on phonon spectra and heat capacities of CL-20/MTNP cocrystal and co-formers by density functional theory method. J Mol Model 2020; 26:148. [PMID: 32440794 DOI: 10.1007/s00894-020-04415-3] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2020] [Accepted: 05/09/2020] [Indexed: 10/24/2022]
Abstract
The phonon spectra and heat capacities of 2, 4, 6, 8, 10, 12-hexanitrohexaazaisowurtzitane/1-methyl-3, 4, 5-trinitropyrazole (CL-20/MTNP) cocrystal and co-formers were calculated in the framework of DFT. By analyzing the phonon density of states (DOS), the energy flow directions and trigger bonds of cocrystal and co-formers have been obtained and the microscopic physical nature was revealed for thermal decomposition mechanism, detonation performance, and sensitivity. For CL-20/MTNP cocrystal, the phonon number of "doorway" modes and the characteristic vibrational frequencies Δωd are between those of its co-formers, which can provide the microscopic understanding for the ordering of impact sensitivity at experiment, ε-CL-20 > CL-20/MTNP > MTNP. In CL-20/MTNP cocrystal, more phonons and stronger phonon DOS peaks of CL-20 molecules than those of MTNP molecules mean cocrystal's detonation performance is mainly dominated by CL-20 molecules. The heat capacities obtained by the Debye model rise with elevated temperatures at 0-600 K and the order is ε-CL-20 > CL-20/MTNP > MTNP. Graphical abstract The phonon spectra and heat capacities of CL-20/MTNP cocrystal and co-formers were calculated by density functional theory (DFT). In CL-20/MTNP cocrystal, the detonation performance and impact sensitivity are mainly dominated by CL-20 molecules. The broken bonds caused by energy transfer may undergo a multi-phonon pumping process.
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Saha SK, Dutta A, Ghosh P, Sukul D, Banerjee P. Novel Schiff-base molecules as efficient corrosion inhibitors for mild steel surface in 1 M HCl medium: experimental and theoretical approach. Phys Chem Chem Phys 2016; 18:17898-911. [PMID: 27315235 DOI: 10.1039/c6cp01993e] [Citation(s) in RCA: 301] [Impact Index Per Article: 37.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Abstract
In order to evaluate the effect of the functional group present in the ligand backbone towards corrosion inhibition performances, three Schiff-base molecules namely, (E)-4-((2-(2,4-dinitrophenyl)hydrazono)methyl)pyridine (L(1)), (E)-4-(2-(pyridin-4-ylmethylene)hydrazinyl)benzonitrile (L(2)) and (E)-4-((2-(2,4-dinitrophenyl)hydrazono)methyl)phenol (L(3)) were synthesized and used as corrosion inhibitors on mild steel in 1 M HCl medium. The corrosion inhibition effectiveness of the studied inhibitors was investigated by weight loss and several sophisticated analytical tools such as potentiodynamic polarization and electrochemical impedance spectroscopy measurements. Experimentally obtained results revealed that corrosion inhibition efficiencies followed the sequence: L(3) > L(1) > L(2). Electrochemical findings showed that inhibitors impart high resistance towards charge transfer across the metal-electrolyte interface and behaved as mixed type inhibitors. Scanning electron microscopy (SEM) was also employed to examine the protective film formed on the mild steel surface. The adsorption as well as inhibition ability of the inhibitor molecules on the mild steel surface was investigated by quantum chemical calculation and molecular dynamic (MD) simulation. In quantum chemical calculations, geometry optimized structures of the Schiff-base inhibitors, electron density distribution in HOMO and LUMO and Fukui indices of each atom were employed for their possible mode of interaction with the mild steel surfaces. MD simulations revealed that all the inhibitors molecules adsorbed in parallel orientation with respect to the Fe(110) surface.
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Affiliation(s)
- Sourav Kr Saha
- Surface Engineering & Tribology Group, CSIR-Central Mechanical Engineering Research Institute, Mahatma Gandhi Avenue, Durgapur 713209, West Bengal, India.
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Vibrational properties, phonon spectrum and related thermal parameters of β-octahydro-1,3,5,7-tetranitro-1,3,5,7-tetrazocine: a theoretical study. J Mol Model 2015; 22:9. [PMID: 26669878 DOI: 10.1007/s00894-015-2877-9] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2015] [Accepted: 11/22/2015] [Indexed: 10/22/2022]
Abstract
The vibrational spectrum, phonon dispersion curve, and phonon density of states (DOS) of β-octahydro-1,3,5,7-tetranitro-1,3,5,7-tetrazocine (β-HMX) crystal were obtained by molecular simulation and calculations. As results, it was found that the peaks at low frequency (0-2.5 THz) are comparable with the experimental Terahertz absorption and the molecular vibrational modes are in agreement with previous reports. Thermodynamic properties including Gibbs free energy, enthalpy, and heat capacity as functions of temperature were obtained based on the calculated phonon spectrum. The heat capacity at normal temperature was calculated using linear fitting method, with a result consistent with experiments. Graphical Abstract Phonon spectrum and heat capacity of β-octahydro-1,3,5,7-tetranitro-1,3,5,7-tetrazocine from DFT calculation.
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Saha SK, Dutta A, Ghosh P, Sukul D, Banerjee P. Adsorption and corrosion inhibition effect of Schiff base molecules on the mild steel surface in 1 M HCl medium: a combined experimental and theoretical approach. Phys Chem Chem Phys 2015; 17:5679-90. [PMID: 25623363 DOI: 10.1039/c4cp05614k] [Citation(s) in RCA: 195] [Impact Index Per Article: 21.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Corrosion inhibition performance of 2-(2-hydroxybenzylideneamino)phenol (L(1)), 2-(5-chloro-2-hydroxybenzylideneamino)phenol (L(2)) and 2-(2-hydroxy-5-nitrobenzylideneamino)phenol (L(3)) on the corrosion behaviour of mild steel surface in a 1 M hydrochloric acid (HCl) solution is investigated by sophisticated analytical methods like potentiodynamic polarization, electrochemical impedance spectroscopy and weight loss measurements. Polarization studies showed that all the compounds are mixed type (cathodic and anodic) inhibitors and the inhibition efficiency (η%) increased with increasing inhibitor concentration. The inhibition actions of these Schiff base molecules are discussed in view of blocking the electrode surface by means of adsorption of the inhibitor molecule obeying the Langmuir adsorption isotherm. Scanning electron microscopy (SEM) studies of the metal surfaces confirmed the existence of an adsorbed film. Density functional theory (DFT) and molecular dynamics (MD) simulation have been used to determine the relationship between molecular configuration and their inhibition efficiencies. The order of inhibition performance obtained from experimental results is successfully verified by DFT and MD simulation.
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Affiliation(s)
- Sourav Kr Saha
- Surface Engineering & Tribology Group, CSIR-Central Mechanical Engineering Research Institute, Mahatma Gandhi Avenue, Durgapur 713209, West Bengal, India.
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Saha SK, Banerjee P. A theoretical approach to understand the inhibition mechanism of steel corrosion with two aminobenzonitrile inhibitors. RSC Adv 2015. [DOI: 10.1039/c5ra15173b] [Citation(s) in RCA: 132] [Impact Index Per Article: 14.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
The adsorption behavior and corresponding inhibition mechanism of two aminobenzonitrile derivatives in aqueous acidic medium on steel surfaces have been investigated using quantum chemical calculations and molecular dynamics (MD) simulations.
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Affiliation(s)
- Sourav Kr. Saha
- Surface Engineering & Tribology Group
- CSIR-Central Mechanical Engineering Research Institute
- Durgapur 713209
- India
- Academy of Scientific & Innovative Research at CSIR-CMERI
| | - Priyabrata Banerjee
- Surface Engineering & Tribology Group
- CSIR-Central Mechanical Engineering Research Institute
- Durgapur 713209
- India
- Academy of Scientific & Innovative Research at CSIR-CMERI
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Effect of surfactant headgroups on the oil/water interface: An interfacial tension measurement and simulation study. J Mol Struct 2013. [DOI: 10.1016/j.molstruc.2013.07.049] [Citation(s) in RCA: 95] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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Pereverzev A, Sewell TD, Thompson DL. Molecular dynamics study of the pressure-dependent terahertz infrared absorption spectrum of α- and γ-RDX. J Chem Phys 2013; 139:044108. [DOI: 10.1063/1.4813795] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023] Open
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Wu Q, Zhu W, Xiao H. Periodic DFT study of structural, electronic, absorption, and thermodynamic properties of crystalline α-RDX under hydrostatic compression. Struct Chem 2013. [DOI: 10.1007/s11224-013-0306-1] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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Ahuja BL, Jain P, Sahariya J, Heda NL, Soni P. Electronic Properties of RDX and HMX: Compton Scattering Experiment and First-Principles Calculation. J Phys Chem A 2013; 117:5685-92. [PMID: 23763382 DOI: 10.1021/jp404093p] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- B. L. Ahuja
- Department of Physics, M. L. Sukhadia University, Udaipur 313001, India
| | - Pradeep Jain
- Department of Physics, M. L. Sukhadia University, Udaipur 313001, India
| | - Jagrati Sahariya
- Department of Physics, M. L. Sukhadia University, Udaipur 313001, India
| | - N. L. Heda
- Department of Pure and Applied
Physics, University of Kota, Kota 324010,
India
| | - Pramod Soni
- Terminal Ballistics Research Laboratory, DRDO, Sector-30, Chandigarh 160003,
India
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Kraczek B, Chung PW. Investigation of direct and indirect phonon-mediated bond excitation in α-RDX. J Chem Phys 2013; 138:074505. [DOI: 10.1063/1.4790637] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022] Open
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Computational Methods for the Assignment of Vibrational Modes in Crystalline Materials. TERAHERTZ SPECTROSCOPY AND IMAGING 2012. [DOI: 10.1007/978-3-642-29564-5_7] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
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Analysis of the vibrational spectrum of dihydrazinium 5,5′-azotetrazolate dihydrate by electronic structure calculations. J Mol Struct 2010. [DOI: 10.1016/j.molstruc.2010.03.072] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Derzsi M, Colognesi D. Inelastic neutron scattering and DFT study of potassium hydrogen phthalate. J Mol Struct 2010. [DOI: 10.1016/j.molstruc.2009.12.044] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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Miao MS, Dreger ZA, Winey JM, Gupta YM. Density Functional Theory Calculations of Pressure Effects on the Vibrational Structure of α-RDX. J Phys Chem A 2008; 112:12228-34. [DOI: 10.1021/jp807285u] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- M. S. Miao
- Institute for Shock Physics and Department of Physics, Washington State University, Pullman, Washington 99164-2816
| | - Z. A. Dreger
- Institute for Shock Physics and Department of Physics, Washington State University, Pullman, Washington 99164-2816
| | - J. M. Winey
- Institute for Shock Physics and Department of Physics, Washington State University, Pullman, Washington 99164-2816
| | - Y. M. Gupta
- Institute for Shock Physics and Department of Physics, Washington State University, Pullman, Washington 99164-2816
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Sládkovičová M, Smrčok Ľ, Mach P, Tunega D, Ramirez-Cuesta AJ. Inelastic neutron scattering and DFT study of 1,6-anhydro-β-d-glucopyranose (levoglucosan). J Mol Struct 2008. [DOI: 10.1016/j.molstruc.2007.03.042] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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