1
|
Sun M, Zhou Y, Wang Y, Qiao X, Wang J, Zhang J. Heterogeneous Reaction of Peroxyacetyl Nitrate on Real-World PM 2.5 Aerosols: Kinetics, Influencing Factors, and Atmospheric Implications. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2022; 56:9325-9334. [PMID: 35704858 DOI: 10.1021/acs.est.2c03050] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
The formation and decomposition of peroxyacetyl nitrate (PAN), an important atmospheric nitrogen oxide reservoir, can impact the level and cycling of free radicals and nitrogen compounds in the atmosphere. PAN sinks are poorly understood, highlighting the importance of elucidating the heterogeneous reaction of PAN on aerosol surfaces. Here, we report for the first time the uptake behavior, kinetics, and potential mechanism of PAN uptake on real-world aerosol PM2.5 using a flow tube system. The uptake coefficients (γ) of PAN increased non-linearly from (1.5 ± 0.7) × 10-5 at 0% relative humidity (RH) to (9.3 ± 2.0) × 10-5 at 80% RH. The γ decrease with increasing initial PAN concentration is consistent with the Langmuir-Hinshelwood mechanism. Organic components of aerosols may promote heterogeneous loss of PAN through redox reactions. Higher γ occurs with higher water content, lower pH, and lower ionic strength in the aqueous phase of aerosols. The present study suggests that heterogeneous reaction of PAN on ambient aerosols plays a non-negligible role in the atmospheric PAN budget and provides new insights into the role of PAN in promoting atmospheric oxidation capacity during hazy periods with cold and wet weather conditions.
Collapse
Affiliation(s)
- Mei Sun
- State Key Joint Laboratory of Environmental Simulation and Pollution Control, College of Environmental Sciences and Engineering, Peking University, Beijing 100871, China
- Institute of Environmental Engineering, ETH Zürich, Zürich 8093, Switzerland
| | - Ying Zhou
- State Key Joint Laboratory of Environmental Simulation and Pollution Control, College of Environmental Sciences and Engineering, Peking University, Beijing 100871, China
| | - Yifei Wang
- State Key Joint Laboratory of Environmental Simulation and Pollution Control, College of Environmental Sciences and Engineering, Peking University, Beijing 100871, China
| | - Xueqi Qiao
- State Key Joint Laboratory of Environmental Simulation and Pollution Control, College of Environmental Sciences and Engineering, Peking University, Beijing 100871, China
| | - Jing Wang
- Institute of Environmental Engineering, ETH Zürich, Zürich 8093, Switzerland
- Laboratory for Advanced Analytical Technologies, Empa, Swiss Federal Laboratories for Materials Science and Technology, Dübendorf 8600, Switzerland
| | - Jianbo Zhang
- State Key Joint Laboratory of Environmental Simulation and Pollution Control, College of Environmental Sciences and Engineering, Peking University, Beijing 100871, China
| |
Collapse
|
2
|
Sandhiya L, Senthilkumar K. Unimolecular decomposition of acetyl peroxy radical: a potential source of tropospheric ketene. Phys Chem Chem Phys 2020; 22:26819-26827. [PMID: 33231595 DOI: 10.1039/d0cp04590j] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The unimolecular decomposition of acetyl peroxy radicals followed by subsequent nitration is known to lead to the formation of peroxy acetyl nitrate (PAN) in the troposphere. Using high level quantum chemical calculations, we show that the acetyl peroxy radical is a precursor in the formation of tropospheric ketene. The results show that the presence of a single or double water molecule(s) as a catalyst does not influence the decomposition reaction directly to form ketene and hydroperoxy radicals. The electronic excitation of the reactive and product complexes occurs in the wavelength range of ∼1400 nm, suggesting that the complexes undergo photoexcitation in the near IR region. The results ascertain that the dissociation of acetyl peroxy radicals into ketene and hydroperoxy radicals occurs more likely through the excitation route and the corresponding excitation wavelength reveals that the reactions are red-light driven. Three different product complexes, ketene·HO2, ketene·H2O·HO2 and ketene·(H2O)2·HO2, are formed from the reaction. The direct dynamics simulations show that the product complexes are more stable and possess a long lifetime. The calculated temperature dependent equilibrium constant of the product complexes reveals that their atmospheric abundances decrease with increasing altitudes.
Collapse
Affiliation(s)
- L Sandhiya
- CSIR - National Institute of Science, Technology and Development Studies, New Delhi-110012, India.
| | | |
Collapse
|
3
|
Dargent D, Zins EL, Madebène B, Alikhani ME. Topological insights into the 1/1 diacetyl/water complex gained using a new methodological approach. J Mol Model 2015. [PMID: 26224601 DOI: 10.1007/s00894-015-2751-9] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Abstract
The 1/1 diacetyl/water complex is of atmospheric relevance. Previous experimental and theoretical studies have focused on two isomeric forms, and geometry optimizations were carried out on them. Herein, we propose a six-step methodological approach based on topological properties to search for and characterize all of the isomeric forms of the 1/1 noncovalent diacetyl/water complex: (1) a molecular electrostatic potential (MESP) study to get an overview of the V min and V max regions on the molecular surfaces of the separate molecules (diacetyl and water); (2) a topological (QTAIM and ELF) study allowing thorough characterization of the electron densities (QTAIM) and irreducible ELF basins of the separate molecules; (3) full optimization of the predicted structures based on the interaction between complementary reaction sites; (4) energetic characterization based on a symmetry-adapted perturbation theory (SAPT) analysis; (5) topological characterization of the optimized complexes; (6) analysis of the complexes in terms of orbital overlaps (natural bond orbitals, NBO analysis). Using this approach, in addition to achieving the topological characterization of the two isomeric forms already reported, a third possible isomer was identified and characterized. Graphical Abstract Topological tools to study monohydrated complexes.
Collapse
Affiliation(s)
- D Dargent
- Sorbonne Universités, UPMC Univ. Paris 06, MONARIS, UMR 8233, Université Pierre et Marie Curie, Pr. M. Esmaïl Alikhani CC 49, 4 place Jussieu, 75252, Paris, France
| | | | | | | |
Collapse
|
4
|
Zhang T, Li G, Wang W, Du Y, Li C, Lü J. Theoretical studies on atmospheric reactions of CH2FO2 with HO2 and HO2⋅H2O complex. COMPUT THEOR CHEM 2012. [DOI: 10.1016/j.comptc.2012.03.016] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
|
5
|
Long B, Zhang WJ, Long ZW. Theoretical Study on Impact of Single Water Molecule on OH+O3 Reaction. CHINESE J CHEM PHYS 2011. [DOI: 10.1088/1674-0068/24/04/419-424] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
|
6
|
Long B, Zhang WJ, Tan XF, Long ZW, Wang YB, Ren DS. Theoretical Study on the Gas Phase Reaction of Sulfuric Acid with Hydroxyl Radical in the Presence of Water. J Phys Chem A 2011; 115:1350-7. [DOI: 10.1021/jp107550w] [Citation(s) in RCA: 40] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Affiliation(s)
- Bo Long
- College of Computer and Information Engineering, Guizhou University for Nationalities, Guiyang, China 550025
| | - Wei-jun Zhang
- Laboratory of Environment Spectroscopy, Anhui Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Hefei, China 230031
| | - Xing-feng Tan
- College of Photo-Electronics, Chongqing University of Posts and Telecommunications, Chongqing, China 400065
| | - Zheng-wen Long
- Department of Physics, Guizhou University, Guiyang, China 550025
| | - Yi-bo Wang
- Key Laboratory of Guizhou High Performance Computational Chemistry, Department of Chemistry, Guizhou University, Guiyang, China 550025
| | - Da-sen Ren
- College of Computer and Information Engineering, Guizhou University for Nationalities, Guiyang, China 550025
| |
Collapse
|
7
|
Long B, Tan XF, Long ZW, Ren DS, Zhang WJ. Theoretical Study on Decomposition of CF3OH Catalyzed by Water Dimer and Ammonia. CHINESE J CHEM PHYS 2011. [DOI: 10.1088/1674-0068/24/01/16-21] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
|
8
|
Zhang T, Wang W, Zhang P, Lü J, Zhang Y. Water-catalyzed gas-phase hydrogen abstraction reactions of CH3O2 and HO2 with HO2: a computational investigation. Phys Chem Chem Phys 2011; 13:20794-805. [DOI: 10.1039/c1cp21563a] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
|
9
|
Favero LB, Caminati W. Hydrated complexes of atmospheric interest: rotational spectrum of diacetyl-water. J Phys Chem A 2009; 113:14308-11. [PMID: 20028157 DOI: 10.1021/jp903022x] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The rotational spectrum of the molecular complex diacetyl-water has been measured by pulsed jet Fourier transform microwave (FTMW) spectroscopy. The water molecule acts as an electrofore and induces a dipole moment when combined with nonpolar diacetyl. Only one conformer has been observed, corresponding to the global minimum. Its shape is unambiguously established: the water moiety is linked asymmetrically to the organic molecule; it behaves as a proton donor to one of its oxygen atoms and interferes with the internal rotation of adjacent methyl group through a C-H...O interaction. Each rotational transition appears as a quintuplet, due to the internal rotation of the two methyl groups, which are nonequivalent in the adduct. From the analysis of the observed splittings, the V(3) barriers to the internal rotation of the two methyl groups have been determined to be 3.81(2) and 4.11(2) kJ/mol, respectively.
Collapse
Affiliation(s)
- Laura B Favero
- Istituto per lo Studio dei Materiali Nanostrutturati (Sezione di Bologna), Consiglio Nazionale delle Ricerche, Via Gobetti 101, I-40129 Bologna, Italy
| | | |
Collapse
|
10
|
Trujillo C, Lamsabhi AM, Mó O, Yañez M. Reactions of F +( 3P) and F +( 1D) with Silicon Oxide. Possibility of Spin-Forbidden Processes. J Phys Chem A 2006; 110:7130-7. [PMID: 16737263 DOI: 10.1021/jp057281n] [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
High level ab initio and density functional theory calculations have been carried out to study the potential energy surfaces associated with the reactions of F(+) in its (3)P ground state and in its (1)D first excited state with silicon dioxide. The structures and vibrational frequencies of the stationary points of both potential energy surfaces were obtained at the B3LYP/6-31G(d) level. Final energies were calculated at the B3LYP/6-311+G(3df,2p) and at the G3X levels of theory. [Si, O(2), F](+) singlet and triplet state cations present very different bonding characteristics. The most favorable reactions path in F(+)((3)P) + SiO(2) reactions should yield O(2) + SiF(+), while in the reactions in the first excited state, only a charge exchange process, yielding F((2)P) + SiO(2)(+)((2)A), should be observed. However, both potential energy surfaces cross each other, because although the entrance F(+)((3)P) + SiO(2) lies 34.5 kcal/mol below F(+)((1)D) + SiO(2), the global minimum of the singlet PES lies 10.3 kcal/mol below the global minimum of the triplet. The minimum energy crossing point between them is close to the global minimum, and the spin-orbit coupling is not zero, suggesting that very likely some of the products will be formed in the singlet hypersurface. The existence of instabilities and large spin-contamination in the description of some of the systems render the DFT calculations unreliable.
Collapse
Affiliation(s)
- Cristina Trujillo
- Departamento de Química, C-9, Universidad Autónoma de Madrid, Cantoblanco, Spain
| | | | | | | |
Collapse
|
11
|
Ryzhkov AB, Ariya PA. The importance of water clusters (H2O)n (n=2,…,4) in the reaction of Criegee intermediate with water in the atmosphere. Chem Phys Lett 2006. [DOI: 10.1016/j.cplett.2005.12.016] [Citation(s) in RCA: 69] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
|