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Huang C, Zhang H, Cheng X. R-Matrix Calculation of Electron Collisions with Molecular Oxygen in Its Electronically Excited States. J Phys Chem A 2022; 126:2061-2074. [PMID: 35324182 DOI: 10.1021/acs.jpca.1c09153] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Low-energy electron collisions with the X3Σg- ground state and a1Δg and b1Σg+, the Herzberg states (c1Σu-, A'3Δu, and A3Σu+), and B3Σu- excited states of the O2 molecules are studied using the fixed-nucleus R-matrix method. Integral elastic scattering and electronic excitation cross sections from the X3Σg- ground state overall agree well with the available experimental and theoretical results. The electronic (de-)excitation cross sections for the electron impact with the Herzberg states and the B3Σu- state are reported. The value of elastic cross sections for the six excited states decreases with the increment of electron energy, except for the resonance peaks. As the case of excitation from the X3Σg- ground state, the O2- 2Πu resonance makes a dominant contribution to the (de-)excitation cross sections from the a1Δg, b1Σg+, and the Herzberg states. The magnitude of the de-excitation cross sections at the location of the 2Πu resonance from the Herzberg states to the ground state is about 2 to 8 times those of the excitation cross sections for the corresponding excitation transitions. These results should be significant for models of oxygen plasma and the dynamics of the Herzberg states of molecular oxygen in the earth's atmosphere.
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Affiliation(s)
- ChaoWen Huang
- Institute of Atomic and Molecular Physics, Sichuan University, Chengdu 610065, China
| | - Hong Zhang
- College of Physics, Sichuan University, Chengdu 610065, China
| | - XinLu Cheng
- Institute of Atomic and Molecular Physics, Sichuan University, Chengdu 610065, China
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Pershin AA, Torbin AP, Mikheyev PA, Kaiser RI, Mebel AM, Azyazov VN. Ozone destruction due to the recombination of oxygen atoms. J Chem Phys 2021; 155:164307. [PMID: 34717353 DOI: 10.1063/5.0064361] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Kinetics of ozone destruction due to the recombination of oxygen atoms produced by pulsed 266 nm laser photolysis of O3/M (M = CO2 and/or N2) mixtures was studied using the absorption and emission spectroscopy to follow time evolutions of O3 and electronically excited molecules O2* formed in the recombination process 2O(3P) + M → O2* + M. An unexpected high ozone destruction rate was observed when O2* was present in the system. The kinetic model developed for the oxygen nightglow on the terrestrial planets was adapted to interpret the detected temporal profiles of the ozone number density and the O2* emission intensities. It was deduced that the vibrationally excited singlet delta oxygen molecule O2(a1Δ, υ) formed in the secondary processes reacts efficiently with ozone in the process O2(a1Δ, υ ≥ 3) + O3 → 2O2 + O, and the rate constant of this process was estimated to be 3 × 10-11 cm3 s-1. Ab initio calculations at the CASPT2(14, 12)/cc-pVTZ/UωB97XD/cc-pVTZ level of theory were applied to find the reaction pathway from the reactants to products on the O5 potential energy surface. These calculations revealed that the O2(a1Δ) + O3 reaction is likely to proceed via singlet-triplet intersystem crossing exhibiting an energy barrier of 9.6 kcal/mol, which lies between two and three quanta of vibrational excitation of O2(a1Δ), and hence, O2(a1Δ, υ) with υ ≥ 3 could rapidly react with ozone.
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Wang Y, Wu G, Xu H, Ma H, Yuan L, Feng W. Radiolytic stability of pillar[5]arene-based diglycolamides. RADIOCHIM ACTA 2020. [DOI: 10.1515/ract-2020-0049] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Abstract
Radiolytic stability of pillar[5]arene-based diglycolamides (P5DGAs) against gamma irradiation up to 1000 kGy adsorbed dose was studied. The results reveal the increase of radiation damage degree on P5DGAs with dose. The radiolysis products of P5DGAs including the gaseous and solid products were fully characterized by 1H NMR, HR-ESI-MS, GC, and HPLC techniques. It was found that the main radiolytic gas products of P5DGAs under argon are H2, N2, CO and gaseous hydrocarbons. The solid degradation products contain phenolic hydroxyl groups and secondary amine groups. In addition, solvent extraction toward Eu(III) was performed with P5DGAs, in which about 50% decrease on extraction efficiency was observed for irradiated P5DGAs with dose of 1000 kGy in comparison with the non-irradiated one. A radiolytic degradation pathway was also proposed based on the above results. This is the first time to investigate the radiolytic stability of neat P5DGAs and P5DGAs in molecular diluent in detail and provides useful information for further application of P5DGAs in practical applications for spent fuel reprocessing.
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Affiliation(s)
- Ying Wang
- Key Laboratory for Radiation Physics and Technology of Ministry of Education Institute of Nuclear Science and Technology, College of Chemistry, Sichuan University , Chengdu 610064 , China
| | - Geyang Wu
- Irradiation Preservation Technology Key Laboratory of Sichuan Province Sichuan Institute of Atomic Energy , Chengdu 610101 , China
| | - Hongjun Xu
- Irradiation Preservation Technology Key Laboratory of Sichuan Province Sichuan Institute of Atomic Energy , Chengdu 610101 , China
| | - Haoyang Ma
- Key Laboratory for Radiation Physics and Technology of Ministry of Education Institute of Nuclear Science and Technology, College of Chemistry, Sichuan University , Chengdu 610064 , China
| | - Lihua Yuan
- Key Laboratory for Radiation Physics and Technology of Ministry of Education Institute of Nuclear Science and Technology, College of Chemistry, Sichuan University , Chengdu 610064 , China
| | - Wen Feng
- Key Laboratory for Radiation Physics and Technology of Ministry of Education Institute of Nuclear Science and Technology, College of Chemistry, Sichuan University , Chengdu 610064 , China
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Trushina AP, Goldort VG, Kochubei SA, Baklanov AV. Quantum Yield and Mechanism of Singlet Oxygen Generation via UV Photoexcitation of O2–O2 and N2–O2 Encounter Complexes. J Phys Chem A 2012; 116:6621-9. [DOI: 10.1021/jp301471e] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Aleksandra P. Trushina
- Institute of Chemical Kinetics and Combustion, Institutskaya Str. 3, Novosibirsk 630090,
Russia
- Novosibirsk State University, Pirogova Str. 2, Novosibirsk
630090, Russia
| | - Veniamin G. Goldort
- Institute of Semiconductor Physics, Lavrentiev Ave. 13, Novosibirsk
630090, Russia
| | - Sergei A. Kochubei
- Institute of Semiconductor Physics, Lavrentiev Ave. 13, Novosibirsk
630090, Russia
| | - Alexey V. Baklanov
- Institute of Chemical Kinetics and Combustion, Institutskaya Str. 3, Novosibirsk 630090,
Russia
- Novosibirsk State University, Pirogova Str. 2, Novosibirsk
630090, Russia
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Pejaković DA, Copeland RA, Cosby PC, Slanger TG. Studies on the production of O2(a1Δg,υ= 0) and O2(b1Σg+,υ= 0) from collisional removal of O2(A3Σu+,υ′ = 6-10). ACTA ACUST UNITED AC 2007. [DOI: 10.1029/2007ja012520] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Dušan A. Pejaković
- Molecular Physics Laboratory; SRI International; Menlo Park California USA
| | | | - Philip C. Cosby
- Molecular Physics Laboratory; SRI International; Menlo Park California USA
| | - Tom G. Slanger
- Molecular Physics Laboratory; SRI International; Menlo Park California USA
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Pressure effect on the absorption and photodissociation of O2 near the dissociation threshold. JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY C-PHOTOCHEMISTRY REVIEWS 2003. [DOI: 10.1016/j.jphotochemrev.2003.09.003] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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Sugimoto K, Otomo J, Koda S. Wavelength Dependence of the Primary Ozone Formation in High-Pressure O2 and O2/CO2 Mixtures under Irradiation from 232 to 255 nm. J Phys Chem A 2003. [DOI: 10.1021/jp020367l] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Affiliation(s)
- Kazuko Sugimoto
- Department of Chemical System Engineering, School of Engineering, The University of Tokyo, Hongo 7-3-1, Bunkyo-ku, Tokyo 113-8656, Japan
| | - Junichiro Otomo
- Department of Chemical System Engineering, School of Engineering, The University of Tokyo, Hongo 7-3-1, Bunkyo-ku, Tokyo 113-8656, Japan
| | - Seiichiro Koda
- Department of Chemical System Engineering, School of Engineering, The University of Tokyo, Hongo 7-3-1, Bunkyo-ku, Tokyo 113-8656, Japan
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Otomo J, Oshima Y, Takami A, Koda S. KrF Excimer Laser-induced Ozone Formation in Supercritical Carbon Dioxide. J Phys Chem A 2000. [DOI: 10.1021/jp9935485] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Affiliation(s)
- Junichiro Otomo
- Department of Chemical System Engineering, School of Engineering, The University of Tokyo, Hongo 7-3-1, Bunkyo-ku, Tokyo 113-8656, Japan
| | - Yoshito Oshima
- Department of Chemical System Engineering, School of Engineering, The University of Tokyo, Hongo 7-3-1, Bunkyo-ku, Tokyo 113-8656, Japan
| | - Akinori Takami
- Department of Chemical System Engineering, School of Engineering, The University of Tokyo, Hongo 7-3-1, Bunkyo-ku, Tokyo 113-8656, Japan
| | - Seiichiro Koda
- Department of Chemical System Engineering, School of Engineering, The University of Tokyo, Hongo 7-3-1, Bunkyo-ku, Tokyo 113-8656, Japan
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Koda S, Ebukuro T, Otomo J, Tsuruno T, Oshima Y. Photo-oxidation reactions of ethylene in supercritical CO2. J Photochem Photobiol A Chem 1998. [DOI: 10.1016/s1010-6030(98)00240-8] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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11
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Lauvergnat D, Clary DC. Reactive scattering of highly vibrationally excited oxygen molecules: Ozone formation? J Chem Phys 1998. [DOI: 10.1063/1.475751] [Citation(s) in RCA: 42] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023] Open
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Bahou M, Schriver-Mazzuoli L, Camy-Peyret C, Schriver A. Photolysis of ozone at 693 nm in solid oxygen. Isotopic effects in ozone reformation. Chem Phys Lett 1997. [DOI: 10.1016/s0009-2614(97)00590-3] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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13
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Mack JA, Huang Y, Wodtke AM, Schatz GC. The product vibrational, rotational, and translational energy distribution for the reaction O(3PJ)+O3→2O2: Breakdown of the spectator bond mechanism. J Chem Phys 1996. [DOI: 10.1063/1.472576] [Citation(s) in RCA: 23] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022] Open
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Affiliation(s)
- Laura Brown
- Department of Chemistry and Biochemistry, University of Colorado, Campus Box 215, Boulder, Colorado 80309-0215
| | - Veronica Vaida
- Department of Chemistry and Biochemistry, University of Colorado, Campus Box 215, Boulder, Colorado 80309-0215
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Photooxidation reactions in supercritical CO2. ACTA ACUST UNITED AC 1996. [DOI: 10.1016/s0921-8610(96)80018-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register]
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Bao Z, Yu WO, Barker JR. Absolute integrated cross sections for some O2 Herzberg I transitions near 248–249 nm. J Chem Phys 1995. [DOI: 10.1063/1.469624] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Schriver‐Mazzuoli L, de Saxcé A, Lugez C, Camy‐Peyret C, Schriver A. Ozone generation through photolysis of an oxygen matrix at 11 K: Fourier transform infrared spectroscopy identification of the O...O3 complex and isotopic studies. J Chem Phys 1995. [DOI: 10.1063/1.469181] [Citation(s) in RCA: 44] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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