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Anithaa V, Suresh R, Kuklin AV, Vijayakumar S. Adsorption of volatile organic compounds on pristine and defected nanographene. COMPUT THEOR CHEM 2022. [DOI: 10.1016/j.comptc.2022.113664] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
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Zarifi K, Rezaei F, Seyed Alizadeh SM. A model of FeN-decorated BeO layer particle for CO gas adsorption. MAIN GROUP CHEMISTRY 2022. [DOI: 10.3233/mgc-210100] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Carbon monoxide (CO) is known as a deathful gas produced by burning of hydrocarbons in a lack of enough oxygen, in which breathing CO leads to serious issues on human life health quality. Therefore, adsorption of CO gas is an essential task for diagnosis or removal of this dreadful gas in environment. To do this, a HEME-like model of iron-nitrogen-doped beryllium oxide (FeNBeO) monolayer was investigated for adsorbing CO gas by performing density functional theory (DFT) calculations. Two models were obtained for this process, in which relaxation of CO with C-head or O-head towards Fe region of monolayer. The results indicated that the formation of FeNBeO-CO model could be achieved more favorable than the formation of FeNBeO-OC model. The obtained optimized geometers and energies all approved this achievement for favorability of FeNBeO-CO model formation. Moreover, molecular orbital based electronic features indicated variations of such features for the models upon adsorption of CO substance, in which the models could be detectable in a sensor function for the existence of CO gas in the environment. As a consequence, the investigated FeNBeO monolayer could be proposed useful for adsorption of CO gas at least for the CO deathful gas diagnosis purposes.
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Affiliation(s)
- Kosar Zarifi
- Department of Chemical Engineering, Science and Research Branch, Islamic Azad University, Tehran, Iran
| | - Farnaz Rezaei
- Department of Chemistry, Faculty of Science, University of Zanjan, Zanjan, Iran
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Kuklin AV, Saykova DI, Suresh R, Begunovich LV, Baryshnikov GV, Karaush-Karmazin N, Saikova SV, Ågren H. Electronic and optical properties of C 16S 8 and C 16S 4Se 4 molecules and crystals. NEW J CHEM 2022. [DOI: 10.1039/d2nj02539f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Here we report electronic and optical properties of C16S8 and C16S4Se4 molecules and crystals and resolve previously reported experimental inconsistencies.
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Affiliation(s)
- Artem V. Kuklin
- Department of Physics and Astronomy, Uppsala University, Box 516, SE-751 20 Uppsala, Sweden
| | - Diana I. Saykova
- International Research Center of Spectroscopy and Quantum Chemistry - IRC SQC, Siberian Federal University, 79 Svobodny pr., 660041 Krasnoyarsk, Russia
- Division of Physical and Inorganic Chemistry, Institute of Non-ferrous Metals, Siberian Federal University, 79 Svobodny pr., 660041 Krasnoyarsk, Russia
| | - Rahul Suresh
- International Research Center of Spectroscopy and Quantum Chemistry - IRC SQC, Siberian Federal University, 79 Svobodny pr., 660041 Krasnoyarsk, Russia
| | - Lyudmila V. Begunovich
- International Research Center of Spectroscopy and Quantum Chemistry - IRC SQC, Siberian Federal University, 79 Svobodny pr., 660041 Krasnoyarsk, Russia
| | - Gleb V. Baryshnikov
- Laboratory of Organic Electronics, Department of Science and Technology, Linköping University, 60174, Norrköping, Sweden
- Department of Chemistry and Nanomaterials Science, Bohdan Khmelnytsky National University, 18031 Cherkasy, Ukraine
| | - Nataliya Karaush-Karmazin
- Department of Chemistry and Nanomaterials Science, Bohdan Khmelnytsky National University, 18031 Cherkasy, Ukraine
| | - Svetlana V. Saikova
- Division of Physical and Inorganic Chemistry, Institute of Non-ferrous Metals, Siberian Federal University, 79 Svobodny pr., 660041 Krasnoyarsk, Russia
| | - Hans Ågren
- Department of Physics and Astronomy, Uppsala University, Box 516, SE-751 20 Uppsala, Sweden
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Muthusaravanan S, Balasubramani K, Suresh R, Ganesh RS, Sivarajasekar N, Arul H, Rambabu K, Bharath G, Sathishkumar VE, Murthy AP, Banat F. Adsorptive removal of noxious atrazine using graphene oxide nanosheets: Insights to process optimization, equilibrium, kinetics, and density functional theory calculations. ENVIRONMENTAL RESEARCH 2021; 200:111428. [PMID: 34107284 DOI: 10.1016/j.envres.2021.111428] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/15/2021] [Revised: 05/10/2021] [Accepted: 05/22/2021] [Indexed: 06/12/2023]
Abstract
Atrazine is a toxic herbicide whose alarming rate of contamination in the drinking water and wastewater poses a severe threat to the environment and human health. Here in this study, the graphene oxide (GO) nanosheets were prepared using Hummers' method with minor modification and studied as a potential adsorbent for atrazine removal from simulated wastewater. The spectroscopy and microscopic analysis confirmed the successful formation of GO with a multilayer structure resembling the crumpled sheets with random stacking. The Response Surface Methodology (RSM) employing Box Behnken design (BBD) was successfully developed to predict the optimal conditions for maximal atrazine removal as adsorbent dosage 121.45 mg/L; initial feed concentration 27.03 mg/L; temperature 27.69 °C, pH 5.37, and time 180 min. The atrazine adsorption onto GO was found to be higher in acidic pH and lower temperature. Density functional theory (DFT) calculation of adsorbent-adsorbate complex in the implicit solvent medium suggests adsorption affinity energy of -24.4 kcal/mol for atrazine. A careful observation of the molecules configuration and binding energy showed that the π-π interactions and hydrogen bonds played a significant role in the adsorption phenomena. Langmuir isotherm suited well to the adsorption process with a maximum adsorption capacity of 138.19 mg/g, at 318 K. The fitness of kinetic models for atrazine adsorption onto GO nanosheets were in following order Ho < Sobkowsk-Czerwi < Avrami model based on their correlation coefficient (R2) values. Reusability analysis showed that GO nanosheets could be effectively recycled using 0.01 N NaOH up to six cycles of atrazine removal. Thus, this study provided a theoretical and experimental basis for the potential application of GO nanosheets as a novel adsorbent for the removal of hazardous atrazine.
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Affiliation(s)
- S Muthusaravanan
- Laboratory for Bioremediation Research, Unit Operations Laboratory, Department of Biotechnology, Kumaraguru College of Technology, Coimbatore, 641049, India; Department of Biotechnology, Mepco Schlenk Engineering College, Sivakasi, India
| | - K Balasubramani
- Department of Petrochemical Engineering, JCT College of Engineering and Technology, Coimbatore, 641105, India
| | - Rahul Suresh
- Department of Physics, Bharathiar University, Coimbatore, 641046, Tamil Nadu, India
| | - R Sankar Ganesh
- Department of Microbial Biotechnology, Bharathiar University, Coimbatore, 641046, Tamil Nadu, India
| | - N Sivarajasekar
- Laboratory for Bioremediation Research, Unit Operations Laboratory, Department of Biotechnology, Kumaraguru College of Technology, Coimbatore, 641049, India.
| | - H Arul
- Department of Physics, Kumaraguru College of Technology, Coimbatore, 641049, India
| | - K Rambabu
- Department of Chemical Engineering, Khalifa University, P.O. Box 127788, Abu Dhabi, United Arab Emirates.
| | - G Bharath
- Department of Chemical Engineering, Khalifa University, P.O. Box 127788, Abu Dhabi, United Arab Emirates
| | - V E Sathishkumar
- Department of Computer Science and Engineering, Kongu Engineering College, Perundurai, Erode, 638060, Tamilnadu, India
| | - A P Murthy
- Department of Chemistry, School of Advanced Sciences, Vellore Institute of Technology, Vellore, Tamilnadu, 632014, India
| | - Fawzi Banat
- Department of Chemical Engineering, Khalifa University, P.O. Box 127788, Abu Dhabi, United Arab Emirates
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Suresh R, Anithaa VS, Shankar R, Subramaniam V. A first principle study of heme molecule as an active adsorbent for halogenated hydrocarbons. J Mol Model 2021; 27:209. [PMID: 34173064 DOI: 10.1007/s00894-021-04821-1] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2021] [Accepted: 06/09/2021] [Indexed: 11/27/2022]
Abstract
Heme, a biomolecule with complex structure and unique properties and strong adsorption of oxygen, is utilized as an adsorbing material for haloalkene gas molecules. It has been systematically investigated employing density functional theory. Among the haloalkene gases chosen in the present study, the interaction energy is maximum for CDFM (-10.66 kcal/mol) and lowest for TFM (-5.02 kcal/mol). The calculated bond stabilization energy for heme-haloalkene complexes correlates with findings of interaction energy. The noncovalent interaction between heme and haloalkenes is confirmed from the topological analysis. The energy gap values decrease on adsorption of haloalkenes along with a decrease in reactivity of the complexes.
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Affiliation(s)
- Rahul Suresh
- Department of Physics, Bharathiar University, Coimbatore, India
| | - V S Anithaa
- Department of Physics, Bharathiar University, Coimbatore, India
| | - R Shankar
- Department of Physics, Bharathiar University, Coimbatore, India
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