1
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Medoš Ž, Bešter-Rogač M, Leontidis E, Tellinghuisen J. Calibrating ITC instruments: Problems with weak base neutralization. Anal Biochem 2024; 694:115602. [PMID: 38977233 DOI: 10.1016/j.ab.2024.115602] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2024] [Revised: 06/28/2024] [Accepted: 07/05/2024] [Indexed: 07/10/2024]
Abstract
Modern isothermal titration calorimetry instruments give great precision, but for comparable accuracy they require chemical calibration. For the heat factor, one recommended process is HCl into the weak base TRIS. In studying this reaction with a VP-ITC and two Nano-ITCs, we have encountered some problems, most importantly a titrant volume shortfall Δv ≈ 0.3 μL, which we attribute to diffusive loss of HCl in the syringe tip. This interpretation is supported by a mathematical treatment of the diffusion problem. The effect was discovered through a variable-v protocol, which thus should be used to properly allow for it in any reaction that similarly approaches completion. We also find that the effects from carbonate contamination and from OH- from weak base hydrolysis can be more significant that previously thought. To facilitate proper weighting in the least-squares fitting of data, we have estimated data variance functions from replicate data. All three instruments have low-signal precision of σ ≈ 1 μJ; titrant volume uncertainty is a factor of ∼2 larger for the Nano-ITCs than for the VP-ITC. The final heat factors remain uncertain by more than the ∼1 % precision of the instruments and are unduly sensitive to the HCl concentration.
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Affiliation(s)
- Žiga Medoš
- Faculty of Chemistry and Chemical Technology, University of Ljubljana, Večna pot 113, 1000, Ljubljana, Slovenia.
| | - Marija Bešter-Rogač
- Faculty of Chemistry and Chemical Technology, University of Ljubljana, Večna pot 113, 1000, Ljubljana, Slovenia
| | | | - Joel Tellinghuisen
- Department of Chemistry, Vanderbilt University, Nashville, TN, 37235, United States.
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2
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He X, Xi Y, Lv C, He C, Kang J, Li Z. Construction of Silicone Composite With Controllable Micro-nano Structure Via In-situ Polymerization on Fiber Surface and Study on SO2 Adsorption Performance. Colloids Surf A Physicochem Eng Asp 2022. [DOI: 10.1016/j.colsurfa.2022.130815] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
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3
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Diveky ME, Gleichweit MJ, Roy S, Signorell R. Shining New Light on the Kinetics of Water Uptake by Organic Aerosol Particles. J Phys Chem A 2021; 125:3528-3548. [PMID: 33739837 DOI: 10.1021/acs.jpca.1c00202] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The uptake of water vapor by various organic aerosols is important in a number of applications ranging from medical delivery of pharmaceutical aerosols to cloud formation in the atmosphere. The coefficient that describes the probability that the impinging gas-phase molecule sticks to the surface of interest is called the mass accommodation coefficient, αM. Despite the importance of this coefficient for the description of water uptake kinetics, accurate values are still lacking for many systems. In this Feature Article, we present various experimental techniques that have been evoked in the literature to study the interfacial transport of water and discuss the corresponding strengths and limitations. This includes our recently developed technique called photothermal single-particle spectroscopy (PSPS). The PSPS technique allows for a retrieval of αM values from three independent, yet simultaneous measurements operating close to equilibrium, providing a robust assessment of interfacial mass transport. We review the currently available data for αM for water on various organics and discuss the few studies that address the temperature and relative humidity dependence of αM for water on organics. The knowledge of the latter, for example, is crucial to assess the water uptake kinetics of organic aerosols in the Earth's atmosphere. Finally, we argue that PSPS might also be a viable method to better restrict the αM value for water on liquid water.
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Affiliation(s)
- Matus E Diveky
- Laboratory of Physical Chemistry, Department of Chemistry and Applied Biosciences, ETH Zürich, Vladimir-Prelog-Weg 2, CH-8093 Zürich, Switzerland
| | - Michael J Gleichweit
- Laboratory of Physical Chemistry, Department of Chemistry and Applied Biosciences, ETH Zürich, Vladimir-Prelog-Weg 2, CH-8093 Zürich, Switzerland
| | - Sandra Roy
- Laboratory of Physical Chemistry, Department of Chemistry and Applied Biosciences, ETH Zürich, Vladimir-Prelog-Weg 2, CH-8093 Zürich, Switzerland
| | - Ruth Signorell
- Laboratory of Physical Chemistry, Department of Chemistry and Applied Biosciences, ETH Zürich, Vladimir-Prelog-Weg 2, CH-8093 Zürich, Switzerland
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4
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XU J, HUANG MQ. Influence of Inorganic Gases on Formation and Chemical Composition of Monoaromatic Hydrocarbons Secondary Organic Aerosol. CHINESE JOURNAL OF ANALYTICAL CHEMISTRY 2020. [DOI: 10.1016/s1872-2040(20)60008-1] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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5
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Global airborne sampling reveals a previously unobserved dimethyl sulfide oxidation mechanism in the marine atmosphere. Proc Natl Acad Sci U S A 2020; 117:4505-4510. [PMID: 32071211 DOI: 10.1073/pnas.1919344117] [Citation(s) in RCA: 75] [Impact Index Per Article: 18.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
Dimethyl sulfide (DMS), emitted from the oceans, is the most abundant biological source of sulfur to the marine atmosphere. Atmospheric DMS is oxidized to condensable products that form secondary aerosols that affect Earth's radiative balance by scattering solar radiation and serving as cloud condensation nuclei. We report the atmospheric discovery of a previously unquantified DMS oxidation product, hydroperoxymethyl thioformate (HPMTF, HOOCH2SCHO), identified through global-scale airborne observations that demonstrate it to be a major reservoir of marine sulfur. Observationally constrained model results show that more than 30% of oceanic DMS emitted to the atmosphere forms HPMTF. Coincident particle measurements suggest a strong link between HPMTF concentration and new particle formation and growth. Analyses of these observations show that HPMTF chemistry must be included in atmospheric models to improve representation of key linkages between the biogeochemistry of the ocean, marine aerosol formation and growth, and their combined effects on climate.
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6
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Shostak S, Kim K, Horbatenko Y, Choi CH. Sulfuric Acid Formation via H2SO3 Oxidation by H2O2 in the Atmosphere. J Phys Chem A 2019; 123:8385-8390. [DOI: 10.1021/acs.jpca.9b05444] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Svetlana Shostak
- Chemistry Department, Kyungpook National University, Daehak-ro 80, Daegu 41566, Republic of Korea
| | - Kitae Kim
- Korea Polar Research Institute (KOPRI), Incheon 21990, South Korea
- Department of Polar Sciences, University of Science and Technology (UST), Incheon 21990, South Korea
| | - Yevhen Horbatenko
- Chemistry Department, Kyungpook National University, Daehak-ro 80, Daegu 41566, Republic of Korea
| | - Cheol Ho Choi
- Chemistry Department, Kyungpook National University, Daehak-ro 80, Daegu 41566, Republic of Korea
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7
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Hu Z, Xie H, Wang Q, Chen S. Adsorption and diffusion of sulfur dioxide and nitrogen in single-wall carbon nanotubes. J Mol Graph Model 2019; 88:62-70. [DOI: 10.1016/j.jmgm.2019.01.003] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2018] [Revised: 01/08/2019] [Accepted: 01/08/2019] [Indexed: 10/27/2022]
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8
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Kolb C, Davidovits P, Jayne J, Shi Q, Worsnop D. Kinetics of Trace Gas Uptake by Liquid Surfaces. PROGRESS IN REACTION KINETICS AND MECHANISM 2019. [DOI: 10.3184/007967402103165324] [Citation(s) in RCA: 25] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Affiliation(s)
- C.E. Kolb
- Center for Aerosol and Cloud Chemistry, Aerodyne Research, Inc., Billerica, MA 01821-3976, USA
| | - P. Davidovits
- Center for Aerosol and Cloud Chemistry, Aerodyne Research, Inc., Billerica, MA 01821-3976, USA
- Department of Chemistry, Boston College, Chestnut Hill, MA 02467-3809, USA
| | - J.T. Jayne
- Center for Aerosol and Cloud Chemistry, Aerodyne Research, Inc., Billerica, MA 01821-3976, USA
| | - Q. Shi
- Center for Aerosol and Cloud Chemistry, Aerodyne Research, Inc., Billerica, MA 01821-3976, USA
| | - D.R. Worsnop
- Center for Aerosol and Cloud Chemistry, Aerodyne Research, Inc., Billerica, MA 01821-3976, USA
- Department of Chemistry, Boston College, Chestnut Hill, MA 02467-3809, USA
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9
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Goel H, Windom ZW, Jackson AA, Rai N. Performance of density functionals for modeling vapor liquid equilibria of CO 2 and SO 2. J Comput Chem 2018; 39:397-406. [PMID: 29164642 DOI: 10.1002/jcc.25123] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2017] [Revised: 10/12/2017] [Accepted: 11/07/2017] [Indexed: 01/16/2023]
Abstract
Vapor liquid equilibria (VLE) and condensed phase properties of carbon dioxide and sulfur dioxide are calculated using first principles Monte Carlo (FPMC) simulations to assess the performance of several density functionals, notably PBE-D3, BLYP-D3, PBE0-D3, M062X-D3, and rVV10. GGA functionals were used to compute complete vapor liquid coexistence curves (VLCCs) to estimate critical properties, while the hybrid and nonlocal van der Waals functionals were used only for computing density at a single state point due to the high computational cost. Our results show that the BLYP-D3 functional performs well in predicting VLE properties for both molecules when compared with other functionals. In the liquid phase, pair correlation functions reveal that there is not a significant difference in the location of the peak for the first solvation shell while the peak heights are different for different functionals. Overall, the BLYP-D3 functional is a good choice for modeling VLE of acidic gases with significant environmental implications such as CO2 and SO2 . © 2017 Wiley Periodicals, Inc.
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Affiliation(s)
- Himanshu Goel
- Dave C. Swalm School of Chemical Engineering, and Center for Advanced Vehicular Systems, Mississippi State University, Mississippi State, MS, 39762
| | - Zachary W Windom
- Dave C. Swalm School of Chemical Engineering, and Center for Advanced Vehicular Systems, Mississippi State University, Mississippi State, MS, 39762
| | - Amber A Jackson
- Dave C. Swalm School of Chemical Engineering, and Center for Advanced Vehicular Systems, Mississippi State University, Mississippi State, MS, 39762
| | - Neeraj Rai
- Dave C. Swalm School of Chemical Engineering, and Center for Advanced Vehicular Systems, Mississippi State University, Mississippi State, MS, 39762
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10
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Kinetics study of platinum and base metals precipitation in gas–liquid chloride system. INTERNATIONAL JOURNAL OF INDUSTRIAL CHEMISTRY 2017. [DOI: 10.1007/s40090-016-0095-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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11
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Maurya M, Singh JK. A grand canonical Monte Carlo study of SO2capture using functionalized bilayer graphene nanoribbons. J Chem Phys 2017; 146:044704. [DOI: 10.1063/1.4974309] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Affiliation(s)
- Manish Maurya
- Department of Chemical Engineering, Indian Institute of Technology Kanpur, Kanpur 208016, India
| | - Jayant K. Singh
- Department of Chemical Engineering, Indian Institute of Technology Kanpur, Kanpur 208016, India
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12
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Sahoo DK, Mundlapati VR, Gagrai AA, Biswal HS. Efficient SO2Capture through Multiple Chalcogen Bonds, Sulfur-Centered Hydrogen Bonds and S•••π Interactions: A Computational Study. ChemistrySelect 2016. [DOI: 10.1002/slct.201600061] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Dipak Kumar Sahoo
- School of Chemical Sciences; National Institute of Science Education and Research (NISER); PO- Bhimpur-Padanpur, Via-Jatni, District- Khurda, PIN- 752050 Bhubaneswar India
| | - V. Rao Mundlapati
- School of Chemical Sciences; National Institute of Science Education and Research (NISER); PO- Bhimpur-Padanpur, Via-Jatni, District- Khurda, PIN- 752050 Bhubaneswar India
| | - Arun Anand Gagrai
- School of Chemical Sciences; National Institute of Science Education and Research (NISER); PO- Bhimpur-Padanpur, Via-Jatni, District- Khurda, PIN- 752050 Bhubaneswar India
| | - Himansu S. Biswal
- School of Chemical Sciences; National Institute of Science Education and Research (NISER); PO- Bhimpur-Padanpur, Via-Jatni, District- Khurda, PIN- 752050 Bhubaneswar India
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13
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Abstract
Ionic liquids have generated interest for efficient SO2 absorption due to their low vapor pressure and versatility. In this work, a systematic investigation of the structure, thermodynamics, and dynamics of SO2 absorption by ionic liquids has been carried out through quantum chemical calculations and molecular dynamics (MD) simulations. MP2 level calculations of several ion pairs complexed with SO2 reveal its preferential interaction with the anion. Results of condensed phase MD simulations of SO2-IL mixtures manifested the essential role of both cations and anions in the solvation of SO2, where the solute is surrounded by the "cage" formed by the cations (primarily its alkyl tail) through dispersion interactions. These structural effects of gas absorption are substantiated by calculated Gibbs free energy of solvation; the dissolution is demonstrated to be enthalpy driven. The entropic loss of SO2 absorption in ionic liquids with a larger anion such as [NTf2](-) has been quantified and has been attributed to the conformational restriction of the anion imposed by its interaction with SO2. SO2 loading IL decreases its shear viscosity and enhances the electrical conductivity. This systematic study provides a molecular level understanding which can aid the design of task-specific ILs as electrolytes for efficient SO2 absorption.
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Affiliation(s)
- Anirban Mondal
- Chemistry and Physics of Materials Unit, Jawaharlal Nehru Centre for Advanced Scientific Research , Bangalore 560 064, India
| | - Sundaram Balasubramanian
- Chemistry and Physics of Materials Unit, Jawaharlal Nehru Centre for Advanced Scientific Research , Bangalore 560 064, India
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14
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Ding F, Zheng J, Chen Y, Chen K, Cui G, Li H, Wang C. Highly Efficient and Reversible SO2 Capture by Surfactant-Derived Dual Functionalized Ionic Liquids with Metal Chelate Cations. Ind Eng Chem Res 2014. [DOI: 10.1021/ie5035946] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
| | - Junjie Zheng
- Zhejiang
Tiandi
Environmental Protection Engineering Co., Ltd., Hangzhou, 310003, China
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15
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Johnson CM, Baldelli S. Vibrational Sum Frequency Spectroscopy Studies of the Influence of Solutes and Phospholipids at Vapor/Water Interfaces Relevant to Biological and Environmental Systems. Chem Rev 2014; 114:8416-46. [DOI: 10.1021/cr4004902] [Citation(s) in RCA: 106] [Impact Index Per Article: 10.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Affiliation(s)
- C. Magnus Johnson
- Division of Surface and Corrosion
Science, Royal Institute of Technology (KTH), Drottning Kristinas Väg 51, SE-100 44 Stockholm, Sweden
| | - Steven Baldelli
- Department
of Chemistry, University of Houston, Texas 77204-5003, United States
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16
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Hong SY, Kim H, Kim YJ, Jeong J, Cheong M, Lee H, Kim HS, Lee JS. Nitrile-functionalized tertiary amines as highly efficient and reversible SO2 absorbents. JOURNAL OF HAZARDOUS MATERIALS 2014; 264:136-143. [PMID: 24291666 DOI: 10.1016/j.jhazmat.2013.11.026] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/13/2013] [Revised: 10/23/2013] [Accepted: 11/07/2013] [Indexed: 06/02/2023]
Abstract
Three different types of nitrile-functionalized amines, including 3-(N,N-diethylamino)propionitrile (DEAPN), 3-(N,N-dibutylamino)propionitrile (DBAPN), and N-methyl-N,N-dipropionitrile amine (MADPN) were synthesized, and their SO2 absorption performances were evaluated and compared with those of hydroxy-functionalized amines such as N,N-diethyl-N-ethanol amine (DEEA), N,N-dibutyl-N-ethanol amine (DBEA), and N-methyl-N,N-diethanol amine (MDEA). Absorption-desorption cycle experiments clearly demonstrate that the nitrile-functionalized amines are more efficient than the hydroxy-functionalized amines in terms of absorption rate and regenerability. Computational calculations with DBEA and DBAPN revealed that DBEA bearing a hydroxyethyl group chemically interacts with SO2 through oxygen atom, forming an ionic compound with a covalently bound OSO2(-) group. On the contrary, DBAPN bearing a nitrile group physically interacts with SO2 through the nitrogen and the hydrogen atoms of the two methylene groups adjacent to the amino and nitrile functionalities.
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Affiliation(s)
- Sung Yun Hong
- Department of Chemistry and Research Institute of Basic Sciences, Kyung Hee University, 1 Hoegi-dong, Dongdaemun-gu, Seoul 130-701, Republic of Korea
| | - Heehwan Kim
- Department of Chemistry and Research Institute of Basic Sciences, Kyung Hee University, 1 Hoegi-dong, Dongdaemun-gu, Seoul 130-701, Republic of Korea
| | - Young Jin Kim
- Department of Chemistry and Research Institute of Basic Sciences, Kyung Hee University, 1 Hoegi-dong, Dongdaemun-gu, Seoul 130-701, Republic of Korea
| | - Junkyo Jeong
- Department of Chemistry and Research Institute of Basic Sciences, Kyung Hee University, 1 Hoegi-dong, Dongdaemun-gu, Seoul 130-701, Republic of Korea
| | - Minserk Cheong
- Department of Chemistry and Research Institute of Basic Sciences, Kyung Hee University, 1 Hoegi-dong, Dongdaemun-gu, Seoul 130-701, Republic of Korea
| | - Hyunjoo Lee
- Clean Energy Center, Korea Institute of Science and Technology, Seoul 136-791, Republic of Korea
| | - Hoon Sik Kim
- Department of Chemistry and Research Institute of Basic Sciences, Kyung Hee University, 1 Hoegi-dong, Dongdaemun-gu, Seoul 130-701, Republic of Korea.
| | - Je Seung Lee
- Department of Chemistry and Research Institute of Basic Sciences, Kyung Hee University, 1 Hoegi-dong, Dongdaemun-gu, Seoul 130-701, Republic of Korea.
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17
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Wang C, Zheng J, Cui G, Luo X, Guo Y, Li H. Highly efficient SO2 capture through tuning the interaction between anion-functionalized ionic liquids and SO2. Chem Commun (Camb) 2013; 49:1166-8. [PMID: 23169110 DOI: 10.1039/c2cc37092a] [Citation(s) in RCA: 109] [Impact Index Per Article: 9.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A strategy to improve SO(2) capture through tuning the electronegativity of the interaction site in ILs has been presented. Two types of imidazolium ionic liquids that include less electronegative sulfur or carbon sites were used for the capture of SO(2), which exhibit extremely highly available capacity, rapid absorption rate and excellent reversibility.
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Affiliation(s)
- Congmin Wang
- Department of Chemistry, Zhejiang University, Hangzhou 310027, China.
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18
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Shamay ES, Valley NA, Moore FG, Richmond GL. Staying hydrated: the molecular journey of gaseous sulfur dioxide to a water surface. Phys Chem Chem Phys 2013; 15:6893-902. [DOI: 10.1039/c3cp50609f] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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19
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Mabayoje O, Seredych M, Bandosz TJ. Cobalt (hydr)oxide/graphite oxide composites: importance of surface chemical heterogeneity for reactive adsorption of hydrogen sulfide. J Colloid Interface Sci 2012; 378:1-9. [PMID: 22551475 DOI: 10.1016/j.jcis.2012.04.007] [Citation(s) in RCA: 42] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2012] [Revised: 04/03/2012] [Accepted: 04/04/2012] [Indexed: 02/03/2023]
Abstract
Composites of cobalt (hydr)oxide and graphite oxide (GO) were obtained and evaluated as adsorbents of hydrogen sulfide at ambient conditions. The surface properties of the initial and exhausted samples were studied by FTIR, TEM, SEM/EDX, XRD, adsorption of nitrogen, potentiometric titration, and thermal analysis. The results obtained show a significant improvement in their adsorption capacities compared to parent compounds. The importance of the OH groups of cobalt (hydr)oxide/GO composites and new interface chemistry for the adsorption of hydrogen sulfide on these materials is revealed. The oxygen activation by the carbonaceous component resulted in formation of sulfites. Water enhanced the removal process. This is the result of the basic environment promoting dissociation of H(2)S and acid-base reactions. Finally, the differences in the performance of the materials with different mass ratios of GO were linked to the availability of active sites on the surface of the adsorbents, dispersion of these sites, their chemical heterogeneity, and location in the pore system.
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Affiliation(s)
- Oluwaniyi Mabayoje
- The City College of New York, Department of Chemistry, New York, NY 10031, USA
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20
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21
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Wang C, Cui G, Luo X, Xu Y, Li H, Dai S. Highly efficient and reversible SO2 capture by tunable azole-based ionic liquids through multiple-site chemical absorption. J Am Chem Soc 2011; 133:11916-9. [PMID: 21751802 DOI: 10.1021/ja204808h] [Citation(s) in RCA: 315] [Impact Index Per Article: 24.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
A novel strategy for SO(2) capture through multiple-site absorption in the anion of several azole-based ionic liquids is reported. An extremely high capacity of SO(2) (>3.5 mol/mol) and excellent reversibility (28 recycles) were achieved by tuning the interaction between the basic anion and acidic SO(2). Spectroscopic investigations and quantum-mechanical calculations showed that such high SO(2) capacity originates from the multiple sites of interaction between the anion and SO(2). These tunable azole-based ionic liquids with multiple sites offer significant improvements over commonly used absorbents, indicating the promise for industrial applications in acid gas separation.
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Affiliation(s)
- Congmin Wang
- Department of Chemistry, Zhejiang University, Hangzhou 310027, PR China.
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22
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Ota ST, Richmond GL. Chilling out: a cool aqueous environment promotes the formation of gas-surface complexes. J Am Chem Soc 2011; 133:7497-508. [PMID: 21520889 DOI: 10.1021/ja201027k] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
SO(2), an important atmospheric pollutant, has been implicated in environmental phenomena such as acid rain, climate change, and cloud formation. In addition, SO(2) is fundamentally interesting because it forms spectroscopically identifiable complexes with water at aqueous surfaces. Vibrational sum frequency spectroscopy (VSFS) is used here to further investigate the mechanism by which SO(2) adsorbs to water at tropospherically relevant temperatures (0-23 °C). The spectral results lead to two important conclusions. SO(2) surface affinity is enhanced at colder temperatures, with nearly all of the topmost water molecules showing evidence of binding to SO(2) at 0 °C as compared to a much lower fraction at room temperature. This surface adsorption results in significant changes in water orientation at the surface, but is reversible at the temperatures examined here. Second, the SO(2) complex formation at aqueous surfaces is independent of aqueous solution acidity. One challenge in previous uptake studies was the ability to distinguish between the effects of surface adsorption as compared to bulk accommodation. The surface and vibrational specificity of these studies make this distinction possible, allowing a selective study of how the aqueous properties temperature and pH influence SO(2) surface affinity.
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Affiliation(s)
- Stephanie T Ota
- Department of Chemistry, University of Oregon, Eugene, Oregon 97403, USA
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23
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Levinger NE, Rubenstrunk LC, Baruah B, Crans DC. Acidification of reverse micellar nanodroplets by atmospheric pressure CO2. J Am Chem Soc 2011; 133:7205-14. [PMID: 21506532 DOI: 10.1021/ja2011737] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Abstract
Water absorption of atmospheric carbon dioxide lowers the solution pH due to carbonic acid formation. Bulk water acidification by CO(2) is well documented, but significantly less is known about its effect on water in confined spaces. Considering its prominence as a greenhouse gas, the importance of aerosols in acid rain, and CO(2)-buffering in cellular systems, surprisingly little information exists about the absorption of CO(2) by nanosized water droplets. The fundamental interactions of CO(2) with water, particularly in nanosized structures, may influence a wide range of processes in our technological society. Here results from experiments investigating the uptake of gaseous CO(2) by water pools in reverse micelles are presented. Despite the small number of water molecules in each droplet, changes in vanadium probes within the water pools, measured using vanadium-51 NMR spectroscopy, indicate a significant drop in pH after CO(2) introduction. Collectively, the pH-dependent vanadium probes show CO(2) dissolves in the nanowater droplets, causing the reverse micelle acidity to increase.
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Affiliation(s)
- Nancy E Levinger
- Department of Chemistry, Colorado State University, Fort Collins, Colorado 80523-1872, USA.
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24
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Davidovits P, Kolb CE, Williams LR, Jayne JT, Worsnop DR. Update 1 of: Mass Accommodation and Chemical Reactions at Gas−Liquid Interfaces. Chem Rev 2011; 111:PR76-109. [DOI: 10.1021/cr100360b] [Citation(s) in RCA: 54] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Paul Davidovits
- Chemistry Department, 2609 Beacon Street, Boston College, Chestnut Hill, Massachusetts 02467, United States
| | - Charles E. Kolb
- Center for Aerosol and Cloud Chemistry, Aerodyne Research, Inc., 45 Manning Road, Billerica, Massachusetts 01821, United States
- This is a Chemical Reviews Perennial Review. The root paper of this title was published in Chem. Rev.2006, 106 (4), 1323−1354, DOI: 10.1021.cr040366k; Published (Web) March 16, 2006. Updates to the text appear in red type
| | - Leah R. Williams
- Center for Aerosol and Cloud Chemistry, Aerodyne Research, Inc., 45 Manning Road, Billerica, Massachusetts 01821, United States
- This is a Chemical Reviews Perennial Review. The root paper of this title was published in Chem. Rev.2006, 106 (4), 1323−1354, DOI: 10.1021.cr040366k; Published (Web) March 16, 2006. Updates to the text appear in red type
| | - John T. Jayne
- Center for Aerosol and Cloud Chemistry, Aerodyne Research, Inc., 45 Manning Road, Billerica, Massachusetts 01821, United States
- This is a Chemical Reviews Perennial Review. The root paper of this title was published in Chem. Rev.2006, 106 (4), 1323−1354, DOI: 10.1021.cr040366k; Published (Web) March 16, 2006. Updates to the text appear in red type
| | - Douglas R. Worsnop
- Center for Aerosol and Cloud Chemistry, Aerodyne Research, Inc., 45 Manning Road, Billerica, Massachusetts 01821, United States
- This is a Chemical Reviews Perennial Review. The root paper of this title was published in Chem. Rev.2006, 106 (4), 1323−1354, DOI: 10.1021.cr040366k; Published (Web) March 16, 2006. Updates to the text appear in red type
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Abstract
Molecular beam scattering experiments are used to investigate reactions of SO(2) at the surface of a molten alkali carbonate eutectic at 683 K. We find that two-thirds of the SO(2) molecules that thermalize at the surface of the melt are converted to gaseous CO(2) via the reaction SO(2)(g) + CO(3)(2-) --> CO(2)(g) + SO(3)(-2). The CO(2) product is formed from SO(2) in less than 10(-6) s, implying that the reaction takes place in a shallow liquid region less than 100 A deep. The reaction probability does not vary between 683 and 883 K, further implying a compensation between decreasing SO(2) residence time in the near-interfacial region and increasing reactivity at higher temperatures. These results demonstrate the remarkable efficiency of SO(2) --> CO(2) conversion by molten carbonates, which appear to be much more reactive than dry calcium carbonate or wet slurries commonly used for flue gas desulfurization in coal-burning power plants.
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Affiliation(s)
- Thomas Krebs
- Department of Chemistry, University of Wisconsin–Madison, 1101 University Avenue, Madison, WI 53706-1322
| | - Gilbert M. Nathanson
- Department of Chemistry, University of Wisconsin–Madison, 1101 University Avenue, Madison, WI 53706-1322
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26
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Hirokawa J, Kato T, Mafuné F. Uptake of gas-phase nitrous acid by pH-controlled aqueous solution studied by a wetted wall flow tube. J Phys Chem A 2009; 112:12143-50. [PMID: 18980362 DOI: 10.1021/jp8051483] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Abstract
Uptake kinetics of gas phase nitrous acid (HONO) by a pH-controlled aqueous solution was investigated by using a wetted wall flow tube. The gas phase concentration of HONO after exposure to the aqueous solution was measured selectively by the chemical ionization mass spectrometer in a high sensitive manner. The uptake rate of the gaseous HONO was found to depend on the pH of the solution. For the uptake by neutral and alkaline solutions, the gas phase concentration was observed to decay exponentially, suggesting that the uptake was fully limited by the gas phase diffusion. On the other hand, the uptake by the acidic solution was found to be determined by both the gas phase diffusion and the liquid phase processes such as physical absorption and reversible acid dissociation reaction. The decay was analyzed by the rate equations using the time dependent uptake coefficient involving the saturation of the liquid surface. While the uptake processes by the solution at pH = 2-3 were well described by those calculated using the physical and chemical parameters reported for the bulk, the uptake rates by the solution at 4 < pH < 7 deviate from the calculated ones. The present result can suggest that the pH at the liquid surface is lower than that in the bulk liquid, which is responsible for the additional resistance of mass transfer from the gas to the liquid phase.
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Affiliation(s)
- Jun Hirokawa
- Faculty of Environmental Earth Science, Hokkaido University, Kita-10, Nishi-5, Sapporo, 060-0810, Japan.
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27
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Mass spectrometry of interfacial layers during fast aqueous aerosol/ozone gas reactions of atmospheric interest. Chem Phys Lett 2008. [DOI: 10.1016/j.cplett.2008.02.075] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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28
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Davidovits P, Kolb CE, Williams LR, Jayne JT, Worsnop DR. Mass accommodation and chemical reactions at gas-liquid interfaces. Chem Rev 2007; 106:1323-54. [PMID: 16608183 DOI: 10.1021/cr040366k] [Citation(s) in RCA: 210] [Impact Index Per Article: 12.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Paul Davidovits
- Chemistry Department, 2609 Beacon Street, Boston College, Chestnut Hill, Massachusetts 02467, USA.
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29
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Shaka' H, Robertson WH, Finlayson-Pitts BJ. A new approach to studying aqueous reactions using diffuse reflectance infrared Fourier transform spectrometry: application to the uptake and oxidation of SO2 on OH-processed model sea salt aerosol. Phys Chem Chem Phys 2007; 9:1980-90. [PMID: 17431526 DOI: 10.1039/b612624c] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Diffuse reflectance infrared Fourier transform spectrometry (DRIFTS) is a powerful technique for analyzing solid powders and for following their reactions in real time. We demonstrate that it can also be applied to studying the uptake and reactions of gases in liquid films. Within the DRIFTS cell, a 10%(w/w) mixture of MgCl(2) x 6H(2)O in NaCl was equilibrated with air at 50% RH, which is above the deliquescence point of the magnesium salt but below that of NaCl. This mixture of NaCl coated with an aqueous magnesium chloride solution was then reacted with gas phase OH to generate hydroxide ions via a previously identified interface reaction. This treatment, hereafter referred to as OH-processing, was sufficient to convert some of the magnesium chloride to Mg(OH)(2) and Mg(2)(OH)(3)Cl x 4H(2)O, making the aqueous film basic and providing a reservoir of alkalinity. Subsequent addition of SO(2) to the basic processed mixture resulted in its uptake and conversion to sulfite which was measured by FTIR. The sulfite was simultaneously oxidized to sulfate by HOCl/OCl(-) that was formed in the initial OH-processing of the salt. Further uptake and oxidation of SO(2) in the aqueous film took place when the salt was subsequently exposed to O(3). These studies demonstrate that DRIFTS can be used to study the chemistry in liquid films in real time, and are consistent with the hypothesis that the reaction of gaseous OH with chloride ions generates alkalinity that enhances the uptake and oxidation of SO(2) under these laboratory conditions.
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Affiliation(s)
- Huda Shaka'
- Department of Chemistry, University of California Irvine, Irvine, CA92697-2025, USA
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30
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Tarbuck TL, Richmond GL. Adsorption and Reaction of CO2 and SO2 at a Water Surface. J Am Chem Soc 2006; 128:3256-67. [PMID: 16522107 DOI: 10.1021/ja057375a] [Citation(s) in RCA: 84] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The orientation and hydrogen bonding of water molecules in the vapor/water interfacial region in the presence of SO2 and CO2 gas are examined using vibrational sum-frequency spectroscopy (VSFS) to gain insight into the adsorption and reactions of these gases in atmospheric aerosols. The results show that an SO2 surface complex forms when the water surface is exposed to an atmosphere of SO2 gas. Reaction of SO2 with interfacial water leads to other spectral changes that are examined by studying the VSF spectra and surface tension isotherms of several salts added to the aqueous phase, specifically NaHSO3, NaHCO3, Na2SO3, Na2CO3, Na2SO4, and NaHSO4. The results are compared with similar studies of CO2 adsorption and reaction at the surface. A weakly bound surface complex is not observed with CO2.
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Affiliation(s)
- Teresa L Tarbuck
- Materials Science Institute and Department of Chemistry, University of Oregon, Eugene, Oregon 97403, USA
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31
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Thomas JL, Jimenez-Aranda A, Finlayson-Pitts BJ, Dabdub D. Gas-Phase Molecular Halogen Formation from NaCl and NaBr Aerosols: When Are Interface Reactions Important? J Phys Chem A 2006; 110:1859-67. [PMID: 16451018 DOI: 10.1021/jp054911c] [Citation(s) in RCA: 45] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
Unique interface reactions at the surface of sea-salt particles have been suggested as an important source of photolyzable gas-phase halogen species in the troposphere. Many factors influence the relative importance of interface chemistry compared to aqueous-phase chemistry. The Model of Aerosol, Gas, and Interfacial Chemistry (MAGIC 2.0) is used to study the influence of interface reactions on gas-phase molecular halogen production from pure NaCl and NaBr aerosols. The main focus is to identify the relative importance of bulk compared to interface chemistry and to determine when interface chemistry dominates. Results show that the interface process involving Cl-(surf) and OH(g) is the main source of Cl2(g). For the analogous oxidation of bromide by OH, gaseous Br2 is formed mainly in the bulk aqueous phase and transferred across the interface. However, the reaction of Br-(surf) with O3(g) at the interface is the primary source of Br2(g) under dark conditions. The effect of aerosol size is also studied. Potential atmospheric implications and effects of interface processes on aerosol pH are discussed.
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Affiliation(s)
- Jennie L Thomas
- Department of Chemistry, University of California, Irvine, Irvine, California 92697, USA
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32
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Tarbuck TL, Richmond GL. SO2:H2O Surface Complex Found at the Vapor/Water Interface. J Am Chem Soc 2005; 127:16806-7. [PMID: 16316225 DOI: 10.1021/ja056478q] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
A weakly bonded SO2:H2O surface complex is found at the vapor/water interface prior to the reaction and dissolution of SO2 into the aqueous phase. The results have important implications for understanding the formation of atmospheric aerosols and understanding the atmospheric sulfur cycle.
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Affiliation(s)
- Teresa L Tarbuck
- Department of Chemistry, University of Oregon, Eugene, 97403, USA
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33
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Vácha R, Slavíček P, Mucha M, Finlayson-Pitts BJ, Jungwirth P. Adsorption of Atmospherically Relevant Gases at the Air/Water Interface: Free Energy Profiles of Aqueous Solvation of N2, O2, O3, OH, H2O, HO2, and H2O2. J Phys Chem A 2004. [DOI: 10.1021/jp046268k] [Citation(s) in RCA: 163] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Robert Vácha
- Institute of Organic Chemistry and Biochemistry, Academy of Sciences of the Czech Republic and Center for Complex Molecular Systems and Biomolecules, Flemingovo nam. 2, 16610 Prague 6, Czech Republic, and Department of Chemistry, University of California, Irvine, California 92697-2025
| | - Petr Slavíček
- Institute of Organic Chemistry and Biochemistry, Academy of Sciences of the Czech Republic and Center for Complex Molecular Systems and Biomolecules, Flemingovo nam. 2, 16610 Prague 6, Czech Republic, and Department of Chemistry, University of California, Irvine, California 92697-2025
| | - Martin Mucha
- Institute of Organic Chemistry and Biochemistry, Academy of Sciences of the Czech Republic and Center for Complex Molecular Systems and Biomolecules, Flemingovo nam. 2, 16610 Prague 6, Czech Republic, and Department of Chemistry, University of California, Irvine, California 92697-2025
| | - Barbara J. Finlayson-Pitts
- Institute of Organic Chemistry and Biochemistry, Academy of Sciences of the Czech Republic and Center for Complex Molecular Systems and Biomolecules, Flemingovo nam. 2, 16610 Prague 6, Czech Republic, and Department of Chemistry, University of California, Irvine, California 92697-2025
| | - Pavel Jungwirth
- Institute of Organic Chemistry and Biochemistry, Academy of Sciences of the Czech Republic and Center for Complex Molecular Systems and Biomolecules, Flemingovo nam. 2, 16610 Prague 6, Czech Republic, and Department of Chemistry, University of California, Irvine, California 92697-2025
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34
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Hunt SW, Roeselová M, Wang W, Wingen LM, Knipping EM, Tobias DJ, Dabdub D, Finlayson-Pitts BJ. Formation of Molecular Bromine from the Reaction of Ozone with Deliquesced NaBr Aerosol: Evidence for Interface Chemistry. J Phys Chem A 2004. [DOI: 10.1021/jp0467346] [Citation(s) in RCA: 125] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Affiliation(s)
- S. W. Hunt
- Department of Chemistry, University of California, Irvine, California 92697-2025
| | - M. Roeselová
- Department of Chemistry, University of California, Irvine, California 92697-2025
| | - W. Wang
- Department of Chemistry, University of California, Irvine, California 92697-2025
| | - L. M. Wingen
- Department of Chemistry, University of California, Irvine, California 92697-2025
| | - E. M. Knipping
- Department of Chemistry, University of California, Irvine, California 92697-2025
| | - D. J. Tobias
- Department of Chemistry, University of California, Irvine, California 92697-2025
| | - D. Dabdub
- Department of Chemistry, University of California, Irvine, California 92697-2025
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35
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Finlayson-Pitts BJ. The Tropospheric Chemistry of Sea Salt: A Molecular-Level View of the Chemistry of NaCl and NaBr. Chem Rev 2003; 103:4801-22. [PMID: 14664634 DOI: 10.1021/cr020653t] [Citation(s) in RCA: 223] [Impact Index Per Article: 10.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Affiliation(s)
- B J Finlayson-Pitts
- Department of Chemistry, University of California, Irvine, CA 92697-2025, USA.
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36
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Hommel EL, Allen HC. 1-Methyl Naphthalene Reorientation at the Air−Liquid Interface upon Water Saturation Studied by Vibrational Broad Bandwidth Sum Frequency Generation Spectroscopy. J Phys Chem B 2003; 107:10823-8. [PMID: 26317557 DOI: 10.1021/jp027830e] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Elizabeth L. Hommel
- Department of Chemistry, The Ohio State University, 100 West 18th Avenue, Columbus, Ohio 43210
| | - Heather C. Allen
- Department of Chemistry, The Ohio State University, 100 West 18th Avenue, Columbus, Ohio 43210
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37
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Usher CR, Al-Hosney H, Carlos-Cuellar S, Grassian VH. A laboratory study of the heterogeneous uptake and oxidation of sulfur dioxide on mineral dust particles. ACTA ACUST UNITED AC 2002. [DOI: 10.1029/2002jd002051] [Citation(s) in RCA: 160] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- C. R. Usher
- Department of Chemistry; University of Iowa; Iowa City Iowa USA
| | - H. Al-Hosney
- Department of Chemistry; University of Iowa; Iowa City Iowa USA
| | | | - V. H. Grassian
- Department of Chemistry; University of Iowa; Iowa City Iowa USA
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38
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Knipping EM. Modeling Cl2formation from aqueous NaCl particles: Evidence for interfacial reactions and importance of Cl2decomposition in alkaline solution. ACTA ACUST UNITED AC 2002. [DOI: 10.1029/2001jd000867] [Citation(s) in RCA: 62] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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39
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Goodman AL, Li P, Usher CR, Grassian VH. Heterogeneous Uptake of Sulfur Dioxide On Aluminum and Magnesium Oxide Particles. J Phys Chem A 2001. [DOI: 10.1021/jp004423z] [Citation(s) in RCA: 154] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- A. L. Goodman
- Departments of Chemistry and Chemical and Biochemical Engineering, University of Iowa, Iowa City, Iowa 52246
| | - P. Li
- Departments of Chemistry and Chemical and Biochemical Engineering, University of Iowa, Iowa City, Iowa 52246
| | - C. R. Usher
- Departments of Chemistry and Chemical and Biochemical Engineering, University of Iowa, Iowa City, Iowa 52246
| | - V. H. Grassian
- Departments of Chemistry and Chemical and Biochemical Engineering, University of Iowa, Iowa City, Iowa 52246
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