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Yang B, Xie Z, Liu J, Gui H, Zhang J, Wei X, Fan Z, Zhang D. Investigating the effect of volatility on the hygroscopicities of acetate nanoparticle aerosols by surface plasmon resonance microscopy. J Environ Sci (China) 2024; 138:167-178. [PMID: 38135385 DOI: 10.1016/j.jes.2023.03.013] [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: 11/24/2022] [Revised: 03/05/2023] [Accepted: 03/08/2023] [Indexed: 12/24/2023]
Abstract
Under high relative humidity (RH) conditions, the release of volatile components (such as acetate) has a significant impact on the aerosol hygroscopicity. In this work, one surface plasmon resonance microscopy (SPRM) measurement system was introduced to determine the hygroscopic growth factors (GFs) of three acetate aerosols separately or mixed with glucose at different RHs. For Ca(CH3COO)2 or Mg(CH3COO)2 aerosols, the hygroscopic growth trend of each time was lower than that of the previous time in three cyclic humidification from 70% RH to 90% RH, which may be due to the volatility of acetic acid leading to the formation of insoluble hydroxide (Ca(OH)2 or Mg(OH)2) under high RH conditions. Then the third calculated GF (using the Zdanovskii-Stokes-Robinson method) for Ca(CH3COO)2 or Mg(CH3COO)2 in bicomponent aerosols with 1:1 mass ratio were 3.20% or 5.33% lower than that of the first calculated GF at 90% RH. The calculated results also showed that the hygroscopicity change of bicomponent aerosol was negatively correlated with glucose content, especially when the mass ratio of Mg(CH3COO)2 to glucose was 1:2, the GF at 90% RH only decreased by 4.67% after three cyclic humidification. Inductively coupled plasma atomic emission spectrum (ICP-AES) based measurements also indicated that the changes of Mg2+concentration in bicomponent was lower than that of the single-component. The results of this study reveal thatduring the efflorescence transitions of atmospheric nanoparticles, the organic acids diffusion rate may be inhibited by the coating effect of neutral organic components, and the particles aging cycle will be prolonged.
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Affiliation(s)
- Bo Yang
- Key Laboratory of Environmental Optics and Technology, Anhui Institute of Optics and Fine Mechanics, Hefei Institutes of Physical Science, Chinese Academy of Sciences, Hefei 230031, China; University of Science and Technology of China, Hefei 230026, China
| | - Zhibo Xie
- Key Laboratory of Environmental Optics and Technology, Anhui Institute of Optics and Fine Mechanics, Hefei Institutes of Physical Science, Chinese Academy of Sciences, Hefei 230031, China.
| | - Jianguo Liu
- Key Laboratory of Environmental Optics and Technology, Anhui Institute of Optics and Fine Mechanics, Hefei Institutes of Physical Science, Chinese Academy of Sciences, Hefei 230031, China; University of Science and Technology of China, Hefei 230026, China; CAS Center for Excellence in Regional Atmospheric Environment, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen 361021, China.
| | - Huaqiao Gui
- Key Laboratory of Environmental Optics and Technology, Anhui Institute of Optics and Fine Mechanics, Hefei Institutes of Physical Science, Chinese Academy of Sciences, Hefei 230031, China; CAS Center for Excellence in Regional Atmospheric Environment, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen 361021, China
| | - Jiaoshi Zhang
- Key Laboratory of Environmental Optics and Technology, Anhui Institute of Optics and Fine Mechanics, Hefei Institutes of Physical Science, Chinese Academy of Sciences, Hefei 230031, China
| | - Xiuli Wei
- Key Laboratory of Environmental Optics and Technology, Anhui Institute of Optics and Fine Mechanics, Hefei Institutes of Physical Science, Chinese Academy of Sciences, Hefei 230031, China
| | - Zetao Fan
- Advanced Laser Technology Laboratory of Anhui Province, Department of Optics and Optical Engineering, University of Science and Technology of China, Hefei 230026, China
| | - Douguo Zhang
- Advanced Laser Technology Laboratory of Anhui Province, Department of Optics and Optical Engineering, University of Science and Technology of China, Hefei 230026, China
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2
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Zhang Q, Liu X, Lu Y, Ni Y, Xie W, Yan Z, Li F, Chen J. Sustainable Aqueous Batteries Based on Bipolar Dissociation of Aluminum Hydroxyacetate Electrolyte. J Am Chem Soc 2024; 146:5597-5604. [PMID: 38366992 DOI: 10.1021/jacs.3c13963] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/19/2024]
Abstract
Rechargeable aqueous batteries are potential systems for large-scale energy storage due to their high safety and low cost. However, developing aqueous batteries with high sustainability, affordability, and reversibility is urgent and challenging. Here we report an amphoteric aluminum hydroxyacetate (AlAc(OH)2) electrolyte with the ability of bipolar ionization of H+ and OH-, which facilitates the redox reactions at both the anthraquinone (AQ) anode and nickel hydroxide (Ni(OH)2) cathode. The bipolar ionization ability of the AlAc(OH)2(H2O)3 solvation structure results from the strong polarization ability of Al3+ and OH-. The H+/OH- dissociation ability with a dissociation constant of 5.0/3.0 is stronger than that of water (14.0), which boosts the simultaneous stable redox reactions of electrodes. Specifically, H+ uptake prevents the AQ anode from the formation of an ionic bond, suppressing the electrode dissolution, whereas OH- provides the local alkaline environment for the stable conversion reaction of the Ni(OH)2 cathode. The AQ anode in the designed AQ||Ni(OH)2 battery delivers a discharge capacity of 243.9 mAh g-1 and a capacity retention of 78.2% after 300 cycles with high reversibility. Moreover, a pouch cell with a discharge capacity of 0.90 Ah was assembled, exhibiting an energy density of 44.7 Wh kg-1 based on the total mass of the battery. This work significantly widens the types of aqueous batteries and represents a design philosophy of bipolar electrolytes and distinct electrochemical reactions with H+ and OH-.
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Affiliation(s)
- Qiu Zhang
- Frontiers Science Center for New Organic Matter, Key Laboratory of Advanced Energy Materials Chemistry (Ministry of Education), State Key Laboratory of Advanced Chemical Power Sources, College of Chemistry, Nankai University, Tianjin 300071, China
| | - Xiaomeng Liu
- Frontiers Science Center for New Organic Matter, Key Laboratory of Advanced Energy Materials Chemistry (Ministry of Education), State Key Laboratory of Advanced Chemical Power Sources, College of Chemistry, Nankai University, Tianjin 300071, China
| | - Yong Lu
- Frontiers Science Center for New Organic Matter, Key Laboratory of Advanced Energy Materials Chemistry (Ministry of Education), State Key Laboratory of Advanced Chemical Power Sources, College of Chemistry, Nankai University, Tianjin 300071, China
| | - Youxuan Ni
- Frontiers Science Center for New Organic Matter, Key Laboratory of Advanced Energy Materials Chemistry (Ministry of Education), State Key Laboratory of Advanced Chemical Power Sources, College of Chemistry, Nankai University, Tianjin 300071, China
| | - Weiwei Xie
- Frontiers Science Center for New Organic Matter, Key Laboratory of Advanced Energy Materials Chemistry (Ministry of Education), State Key Laboratory of Advanced Chemical Power Sources, College of Chemistry, Nankai University, Tianjin 300071, China
| | - Zhenhua Yan
- Frontiers Science Center for New Organic Matter, Key Laboratory of Advanced Energy Materials Chemistry (Ministry of Education), State Key Laboratory of Advanced Chemical Power Sources, College of Chemistry, Nankai University, Tianjin 300071, China
| | - Fujun Li
- Frontiers Science Center for New Organic Matter, Key Laboratory of Advanced Energy Materials Chemistry (Ministry of Education), State Key Laboratory of Advanced Chemical Power Sources, College of Chemistry, Nankai University, Tianjin 300071, China
| | - Jun Chen
- Frontiers Science Center for New Organic Matter, Key Laboratory of Advanced Energy Materials Chemistry (Ministry of Education), State Key Laboratory of Advanced Chemical Power Sources, College of Chemistry, Nankai University, Tianjin 300071, China
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Khalid S, Pianta N, Bonizzoni S, Ferrara C, Lorenzi R, Paleari A, Johansson P, Mustarelli P, Ruffo R. Structure-Property Correlations in Aqueous Binary Na +/K +-CH 3COO - Highly Concentrated Electrolytes. THE JOURNAL OF PHYSICAL CHEMISTRY. C, NANOMATERIALS AND INTERFACES 2023; 127:9823-9832. [PMID: 37255926 PMCID: PMC10226112 DOI: 10.1021/acs.jpcc.3c01017] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 02/14/2023] [Revised: 05/02/2023] [Indexed: 06/01/2023]
Abstract
Highly concentrated aqueous binary solutions of acetate salts are promising systems for different electrochemical applications, for example, energy storage devices. The very high solubility of CH3COOK allows us to obtain water-in-salt electrolyte concentrations, thus reducing ion activity and extending the cathodic stability of an aqueous electrolyte. At the same time, the presence of Li+ or Na+ makes these solutions compatible with intercalation materials for the development of rechargeable alkaline-ion batteries. Although there is a growing interest in these systems, a fundamental understanding of their physicochemical properties is still lacking. Here, we report and discuss the physicochemical and electrochemical properties of a series of solutions based on 20 mol kg-1 CH3COOK with different concentrations of CH3COONa. The most concentrated solution, 20 mol kg-1 CH3COOK + 7 mol kg-1 CH3COONa, gives the best compromise between transport properties and electrochemical stability, displaying a conductivity of 21.2 mS cm-1 at 25 °C and a stability window of up to 3 V in "ideal" conditions, i.e., using a small surface area and highly electrocatalytic electrode in a flooded cell. Careful Raman spectroscopy analyses help to address the interaction network, the phase evolution with temperature, and the crystallization kinetics.
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Affiliation(s)
- Shahid Khalid
- Department
of Materials Science, University of Milano-Bicocca, via Cozzi 55, 20125 Milano, Italy
| | - Nicolò Pianta
- Department
of Materials Science, University of Milano-Bicocca, via Cozzi 55, 20125 Milano, Italy
| | - Simone Bonizzoni
- Department
of Materials Science, University of Milano-Bicocca, via Cozzi 55, 20125 Milano, Italy
| | - Chiara Ferrara
- Department
of Materials Science, University of Milano-Bicocca, via Cozzi 55, 20125 Milano, Italy
- National
Reference Center for Electrochemical Energy Storage (GISEL), Consorzio Interuniversitario Nazionale per la Scienza
e Tecnologia dei Materiali (INSTM), 50121 Firenze, Italy
| | - Roberto Lorenzi
- Department
of Materials Science, University of Milano-Bicocca, via Cozzi 55, 20125 Milano, Italy
| | - Alberto Paleari
- Department
of Materials Science, University of Milano-Bicocca, via Cozzi 55, 20125 Milano, Italy
| | - Patrik Johansson
- Department
of Physics, Chalmers University of Technology, SE-41296 Göteborg, Sweden
| | - Piercarlo Mustarelli
- Department
of Materials Science, University of Milano-Bicocca, via Cozzi 55, 20125 Milano, Italy
- National
Reference Center for Electrochemical Energy Storage (GISEL), Consorzio Interuniversitario Nazionale per la Scienza
e Tecnologia dei Materiali (INSTM), 50121 Firenze, Italy
| | - Riccardo Ruffo
- Department
of Materials Science, University of Milano-Bicocca, via Cozzi 55, 20125 Milano, Italy
- National
Reference Center for Electrochemical Energy Storage (GISEL), Consorzio Interuniversitario Nazionale per la Scienza
e Tecnologia dei Materiali (INSTM), 50121 Firenze, Italy
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4
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Peng C, Chen L, Tang M. A database for deliquescence and efflorescence relative humidities of compounds with atmospheric relevance. FUNDAMENTAL RESEARCH 2022; 2:578-587. [PMID: 38934008 PMCID: PMC11197750 DOI: 10.1016/j.fmre.2021.11.021] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2021] [Revised: 10/09/2021] [Accepted: 11/03/2021] [Indexed: 11/21/2022] Open
Abstract
Deliquescence relative humidity (DRH) and efflorescence relative humidity (ERH), the two parameters that regulate phase state and hygroscopicity of substances, play important roles in atmospheric science and many other fields. A large number of experimental studies have measured the DRH and ERH values of compounds with atmospheric relevance, but these values have not yet been summarized in a comprehensive manner. In this work, we develop for the first-of-its-kind a comprehensive database which compiles the DRH and ERH values of 110 compounds (68 inorganics and 42 organics) measured in previous studies, provide the preferred DRH and ERH values at 298 K for these compounds, and discuss the effects of a few key factors (e.g., temperature and particle size) on the measured DRH and ERH values. In addition, we outline future work that will broaden the scope of this database and enhance its accessibility.
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Affiliation(s)
- Chao Peng
- State Key Laboratory of Organic Geochemistry, Guangdong Key Laboratory of Environmental Protection and Resources Utilization, and Guangdong-Hong Kong-Macao Joint Laboratory for Environmental Pollution and Control, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou 510640, China
- CAS Center for Excellence in Deep Earth Science, Guangzhou 510640, China
| | - Lanxiadi Chen
- State Key Laboratory of Organic Geochemistry, Guangdong Key Laboratory of Environmental Protection and Resources Utilization, and Guangdong-Hong Kong-Macao Joint Laboratory for Environmental Pollution and Control, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou 510640, China
- CAS Center for Excellence in Deep Earth Science, Guangzhou 510640, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Mingjin Tang
- State Key Laboratory of Organic Geochemistry, Guangdong Key Laboratory of Environmental Protection and Resources Utilization, and Guangdong-Hong Kong-Macao Joint Laboratory for Environmental Pollution and Control, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou 510640, China
- CAS Center for Excellence in Deep Earth Science, Guangzhou 510640, China
- University of Chinese Academy of Sciences, Beijing 100049, China
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5
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Leong SX, Koh LK, Koh CSL, Phan-Quang GC, Lee HK, Ling XY. In Situ Differentiation of Multiplex Noncovalent Interactions Using SERS and Chemometrics. ACS APPLIED MATERIALS & INTERFACES 2020; 12:33421-33427. [PMID: 32578974 DOI: 10.1021/acsami.0c08053] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Probing changes of noncovalent interactions is crucial to study the binding efficiencies and strengths of (bio)molecular complexes. While surface-enhanced Raman scattering (SERS) offers unique molecular fingerprints to examine such interactions in situ, current platforms are only able to recognize hydrogen bonds because of their reliance on manual spectral identification. Here, we differentiate multiple intermolecular interactions between two interacting species by synergizing plasmonic liquid marble-based SERS platforms, chemometrics, and density functional theory. We demonstrate that characteristic 3-mercaptobenzoic acid (probe) Raman signals have distinct peak shifts upon hydrogen bonding and ionic interactions with tert-butylamine, a model interacting species. Notably, we further quantify the contributions from each noncovalent interaction coexisting in different proportions. As a proof-of-concept, we detect and categorize biologically important nucleotide bases based on molecule-specific interactions. This will potentially be useful to study how subtle changes in biomolecular interactions affect their structural and binding properties.
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Affiliation(s)
- Shi Xuan Leong
- Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, 637371, Singapore
| | - Li Keng Koh
- Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, 637371, Singapore
| | - Charlynn Sher Lin Koh
- Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, 637371, Singapore
| | - Gia Chuong Phan-Quang
- Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, 637371, Singapore
| | - Hiang Kwee Lee
- Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, 637371, Singapore
| | - Xing Yi Ling
- Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, 637371, Singapore
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6
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Olson NE, Xiao Y, Lei Z, Ault AP. Simultaneous Optical Photothermal Infrared (O-PTIR) and Raman Spectroscopy of Submicrometer Atmospheric Particles. Anal Chem 2020; 92:9932-9939. [PMID: 32519841 DOI: 10.1021/acs.analchem.0c01495] [Citation(s) in RCA: 28] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Physicochemical analysis of individual atmospheric aerosols at the most abundant sizes in the atmosphere (<1 μm) is analytically challenging, as hundreds to thousands of species are often present in femtoliter volumes. Vibrational spectroscopies, such as infrared (IR) and Raman, have great potential for probing functional groups in single particles at ambient pressure and temperature. However, the diffraction limit of IR radiation limits traditional IR microscopy to particles > ∼10 μm, which have less relevance to aerosol health and climate impacts. Optical photothermal infrared (O-PTIR) spectroscopy is a contactless method that circumvents diffraction limitations by using changes in the scattering intensity of a continuous wave visible laser (532 nm) to detect the photothermal expansion when a vibrational mode is excited by a tunable IR laser (QCL: 800-1800 cm-1 or OPO: 2600-3600 cm-1). Herein, we simultaneously collect O-PTIR spectra with Raman spectra at a single point for individual particles with aerodynamic diameters <400 nm (prior to impaction and spreading) at ambient temperature and pressure, by also collecting the inelastically scattered visible photons for Raman spectra. O-PTIR and Raman spectra were collected for submicrometer particles with different substrates, particle chemical compositions, and morphologies (i.e., core-shell), as well as IR mapping with submicron spatial resolution. Initial O-PTIR analysis of ambient atmospheric particles identified both inorganic and organic modes in individual sub- and supermicrometer particles. The simultaneous IR and Raman microscopy with submicrometer spatial resolution described herein has considerable potential both in atmospheric chemistry and numerous others fields (e.g., materials and biological research).
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Affiliation(s)
- Nicole E Olson
- Department of Chemistry, University of Michigan, Ann Arbor, Michigan 48109, United States
| | - Yao Xiao
- Department of Chemistry, University of Michigan, Ann Arbor, Michigan 48109, United States
| | - Ziying Lei
- Department of Environmental Health Sciences, University of Michigan, Ann Arbor, Michigan 48109, United States
| | - Andrew P Ault
- Department of Chemistry, University of Michigan, Ann Arbor, Michigan 48109, United States
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7
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Ai S, Huang Y, Xie T, Huang C. Facile Carboxylation of Sugarcane Bagasse and the Adsorption Mechanism for Cadmium Ions. Ind Eng Chem Res 2020. [DOI: 10.1021/acs.iecr.0c00037] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/07/2022]
Affiliation(s)
- Shuo Ai
- Department of Biological and Chemical Engineering, Guangxi University of Science and Technology, Liuzhou City 545006, China
- Guangxi Key Laboratory of Green Processing of Sugar Resources, Liuzhou City 545006, China
| | - Yongchun Huang
- Department of Biological and Chemical Engineering, Guangxi University of Science and Technology, Liuzhou City 545006, China
- Guangxi Key Laboratory of Green Processing of Sugar Resources, Liuzhou City 545006, China
| | - Tenghui Xie
- Department of Biological and Chemical Engineering, Guangxi University of Science and Technology, Liuzhou City 545006, China
- Guangxi Key Laboratory of Green Processing of Sugar Resources, Liuzhou City 545006, China
| | - Chengdu Huang
- Department of Biological and Chemical Engineering, Guangxi University of Science and Technology, Liuzhou City 545006, China
- Guangxi Key Laboratory of Green Processing of Sugar Resources, Liuzhou City 545006, China
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8
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Chang P, Gao X, Cai C, Ma J, Zhang Y. Effect of waiting time on the water transport kinetics of magnesium sulfate aerosol at gel-forming relative humidity using optical tweezers. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2020; 228:117727. [PMID: 31718970 DOI: 10.1016/j.saa.2019.117727] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/18/2018] [Revised: 10/28/2019] [Accepted: 10/28/2019] [Indexed: 06/10/2023]
Abstract
With the loss of water, the amorphous gel states in aqueous magnesium sulfate (MgSO4) aerosol forms and results in nonequilibrium dynamics, owing to the extended time scales for diffusive mixing. The mass transfer resistance in MgSO4 aerosol droplets during evaporation or condensation is investigated using aerosol optical tweezers (AOTs) coupled with Raman spectroscopy. In addition, the kinetics of water transport during hydration and dehydration after different waiting time is studied. With the cyclic change of the relative humidity (RH) below gel-forming, the waiting time is varied to examine the effect of the duration of drying and humidifying on water transport kinetics during subsequent hydration and dehydration process. Apparent diffusion coefficients (Dap) of water molecules in the gel state after different waiting time are obtained. The results indicate that the duration of drying will affect water transport kinetics for subsequent humidifying process due to the different structure and composition in MgSO4 aerosol droplet at different ambient humidities. However, the duration of humidifying has little effect on water transport kinetics for subsequent drying process below gel-forming RH.
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Affiliation(s)
- Pianpian Chang
- The Institute of Chemical Physics, Key Laboratory of Cluster Science, Beijing Institute of Technology, Beijing, 100081, PR China
| | - Xiaoyan Gao
- School of Chemical Engineering, Key Laboratory for Palygorskite Science and Applied Technology of Jiangsu, Huaiyin Institute of Technology, Jiangsu, Huaian, 223003, China
| | - Chen Cai
- Department of Atmospheric and Oceanic Sciences, School of Physics, Peking University, Beijing, 100871, China
| | - Jiabi Ma
- The Institute of Chemical Physics, Key Laboratory of Cluster Science, Beijing Institute of Technology, Beijing, 100081, PR China.
| | - Yunhong Zhang
- The Institute of Chemical Physics, Key Laboratory of Cluster Science, Beijing Institute of Technology, Beijing, 100081, PR China.
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9
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Mendes de Oliveira D, Zukowski SR, Palivec V, Hénin J, Martinez-Seara H, Ben-Amotz D, Jungwirth P, Duboué-Dijon E. Binding of divalent cations to acetate: molecular simulations guided by Raman spectroscopy. Phys Chem Chem Phys 2020; 22:24014-24027. [DOI: 10.1039/d0cp02987d] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
We combine Raman-MCR vibrational spectroscopy experiments with ab initio and classical MD simulations to gain molecular insights into carboxylate–cation binding.
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Affiliation(s)
| | | | - Vladimir Palivec
- Institute of Organic Chemistry and Biochemistry
- Academy of Sciences of the Czech Republic
- Flemingovo nám. 2
- 16610 Prague 6
- Czech Republic
| | - Jérôme Hénin
- CNRS, Université de Paris
- UPR 9080
- Laboratoire de Biochimie Théorique
- 13 Rue Pierre et Marie Curie
- Paris
| | - Hector Martinez-Seara
- Institute of Organic Chemistry and Biochemistry
- Academy of Sciences of the Czech Republic
- Flemingovo nám. 2
- 16610 Prague 6
- Czech Republic
| | - Dor Ben-Amotz
- Department of Chemistry
- Purdue University
- West Lafayette
- USA
| | - Pavel Jungwirth
- Institute of Organic Chemistry and Biochemistry
- Academy of Sciences of the Czech Republic
- Flemingovo nám. 2
- 16610 Prague 6
- Czech Republic
| | - Elise Duboué-Dijon
- Institute of Organic Chemistry and Biochemistry
- Academy of Sciences of the Czech Republic
- Flemingovo nám. 2
- 16610 Prague 6
- Czech Republic
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10
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Isolation and characterization of dextran produced by Lactobacillus sakei L3 from Hubei sausage. Carbohydr Polym 2019; 223:115111. [DOI: 10.1016/j.carbpol.2019.115111] [Citation(s) in RCA: 25] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2019] [Revised: 07/05/2019] [Accepted: 07/19/2019] [Indexed: 11/22/2022]
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11
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Shao X, Wu FM, Yang H, Pang SF, Zhang YH. Observing HNO 3 release dependent upon metal complexes in malonic acid/nitrate droplets. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2018; 201:399-404. [PMID: 29775933 DOI: 10.1016/j.saa.2018.05.026] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/21/2017] [Revised: 04/28/2018] [Accepted: 05/07/2018] [Indexed: 06/08/2023]
Abstract
Although the dicarboxylic acid has been reported to react with nitrate for aged internally mixed aerosols in atmosphere, the quantitative nitrate depletion dependent upon composition in particles is still not well constrained. The chemical composition evolutions for malonic acid/sodium nitrate (MA/SN), malonic acid/magnesium nitrate (MA/MN) and malonic acid/calcium nitrate (MA/CN) particles with the organic to inorganic molar ratio (OIR) of 1:1 are investigated by vacuum Fourier transform infrared spectroscopy (FTIR). Upon dehydration, the intensity of the asymmetric stretching mode of COO- group (νas-COO-) increases, accompanying the decrease in OH feather band and COOH band and NO3- band. These band changes suggest malonate salts formation and HNO3 release. The quantitative NO3- depletion data shows that the reactivity of MA-MN is most and that of MA-SN is least. Analysis of the stretching mode of COO- indicates the different bond type between metal cation and carboxylate anion. In addition, water content in particles decreases at the constant RH, implying water loss with the chemical reaction. When the RH changes very quickly, water uptake delay during the humidification process reveals that water mass transport is limited below 37% RH.
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Affiliation(s)
- Xu Shao
- The Institute of Chemical Physics, School of Chemistry and Chemical Engineering, Beijing Institute of Technology. Beijing 100081, People's Republic of China; Beijing General Research Institute for Nonferrous Metals, People's Republic of China
| | - Feng-Min Wu
- The Institute of Chemical Physics, School of Chemistry and Chemical Engineering, Beijing Institute of Technology. Beijing 100081, People's Republic of China
| | - Hui Yang
- The Institute of Chemical Physics, School of Chemistry and Chemical Engineering, Beijing Institute of Technology. Beijing 100081, People's Republic of China
| | - Shu-Feng Pang
- The Institute of Chemical Physics, School of Chemistry and Chemical Engineering, Beijing Institute of Technology. Beijing 100081, People's Republic of China.
| | - Yun-Hong Zhang
- The Institute of Chemical Physics, School of Chemistry and Chemical Engineering, Beijing Institute of Technology. Beijing 100081, People's Republic of China
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12
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Lv XJ, Wang Y, Cai C, Pang SF, Ma JB, Zhang YH. Investigation of gel formation and volatilization of acetate acid in magnesium acetate droplets by the optical tweezers. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2018; 200:179-185. [PMID: 29680496 DOI: 10.1016/j.saa.2018.04.027] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/07/2018] [Revised: 04/06/2018] [Accepted: 04/13/2018] [Indexed: 06/08/2023]
Abstract
Hygroscopicity and volatility of single magnesium acetate (MgAc2) aerosol particles at various relative humidities (RHs) are studied by a single-beam optical tweezers, and refractive indices (RIs) and morphology are characterized by cavity enhanced Raman spectroscopy. Gel formation and volatilization of acetate acid (HAc) in MgAc2 droplets are observed. Due to the formation of amorphous gel structure, water transposition in droplets at RH < 50% is significantly impeded on a time scale of 140,000 s. Different phase transition at RH < 10% is proposed to explain the distinct water loss after the gel formation. To compare volatilization of HAc in different systems, MgAc2 and sodium acetate (NaAc) droplets are maintained at several different stable RHs during up to 86,000 s. At RH ≈ 74%, magnesium hydroxide (Mg(OH)2) inclusions are formed in MgAc2 droplets due to the volatilization of HAc, and whispering gallery modes (WGMs) of MgAc2 droplets in the Raman spectrum quench after 50,000 s. In sharp contrast, after 86,000 s at RH ≈ 70%, NaAc droplets are in well-mixed liquid states, containing soluble sodium hydroxide (NaOH). At this state, the RI of NaAc droplet is increased, and the quenching of WGMs is not observable.
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Affiliation(s)
- Xi-Juan Lv
- The Institute of Chemical Physics, School of Chemistry and Chemical Engineering, Beijing Institute of Technology, Beijing 100081, People's Republic of China
| | - Yang Wang
- The Institute of Chemical Physics, School of Chemistry and Chemical Engineering, Beijing Institute of Technology, Beijing 100081, People's Republic of China
| | - Chen Cai
- The Institute of Chemical Physics, School of Chemistry and Chemical Engineering, Beijing Institute of Technology, Beijing 100081, People's Republic of China
| | - Shu-Feng Pang
- The Institute of Chemical Physics, School of Chemistry and Chemical Engineering, Beijing Institute of Technology, Beijing 100081, People's Republic of China
| | - Jia-Bi Ma
- The Institute of Chemical Physics, School of Chemistry and Chemical Engineering, Beijing Institute of Technology, Beijing 100081, People's Republic of China.
| | - Yun-Hong Zhang
- The Institute of Chemical Physics, School of Chemistry and Chemical Engineering, Beijing Institute of Technology, Beijing 100081, People's Republic of China.
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Wang N, Cai C, He X, Pang SF, Zhang YH. Vacuum FTIR study on the hygroscopicity of magnesium acetate aerosols. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2018; 192:420-426. [PMID: 29202386 DOI: 10.1016/j.saa.2017.11.058] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/14/2017] [Revised: 11/22/2017] [Accepted: 11/26/2017] [Indexed: 06/07/2023]
Abstract
Hygroscopicity and volatility of secondary organic aerosol (SOA) are two important properties, which determine the composition, concentration, size, phase state of SOA and thus chemical and optical properties for SOA. In this work, magnesium acetate (Mg(Ac)2) aerosol was used as a simple SOA model in order to reveal relationship between hygroscopicity and volatility. A novel approach was set up based on a combination of a vacuum FTIR spectrometer and a home-made relative humidity (RH) controlling system. The striking advantage of this approach was that the RH and the compositions of aerosols could be obtained from a same IR spectrum, which guaranteed the synchronism between RH and spectral features on a sub-second scale. At the constant RH of 90% and 80% for 3000s, the water content within Mg(Ac)2 aerosol particles decreased about 19.0% and 9.4% while there were 13.4% and 6.0% of acetate loss. This was attributed to a cooperation between volatile of acetic acid and Mg2+ hydrolysis in Mg(Ac)2 aerosols, which greatly suppressed the hygroscopicity of Mg(Ac)2 aerosols. When the RH changed with pulsed mode between ~70% and ~90%, hygroscopicity relaxation was observed for Mg(Ac)2 aerosols. Diffuse coefficient of water in the relaxation process was estimated to be ~5×10-12m2·s-1 for the Mg(Ac)2 aerosols. Combining the IR spectra analysis, the decrease in the diffuse coefficient of water was due to the formation of magnesium hydroxide accompanying acetic acid evaporation in the aerosols.
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Affiliation(s)
- Na Wang
- The Institute of Chemical Physics, School of Chemistry and Chemical Engineering, Beijing Institute of Technology, Beijing 100081, People's Republic of China
| | - Chen Cai
- The Institute of Chemical Physics, School of Chemistry and Chemical Engineering, Beijing Institute of Technology, Beijing 100081, People's Republic of China
| | - Xiang He
- The Institute of Chemical Physics, School of Chemistry and Chemical Engineering, Beijing Institute of Technology, Beijing 100081, People's Republic of China
| | - Shu-Feng Pang
- The Institute of Chemical Physics, School of Chemistry and Chemical Engineering, Beijing Institute of Technology, Beijing 100081, People's Republic of China.
| | - Yun-Hong Zhang
- The Institute of Chemical Physics, School of Chemistry and Chemical Engineering, Beijing Institute of Technology, Beijing 100081, People's Republic of China.
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14
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Frontzek (neé Svanidze) AV, Paccou L, Guinet Y, Hédoux A. Study of the phase transition in lysozyme crystals by Raman spectroscopy. Biochim Biophys Acta Gen Subj 2016; 1860:412-23. [DOI: 10.1016/j.bbagen.2015.10.020] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2015] [Revised: 10/15/2015] [Accepted: 10/23/2015] [Indexed: 11/27/2022]
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15
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Chen D, Han X, Du Y, Wang HL, Xu P. In Situ Raman Monitoring of Silver(I)-Aided Laser-Driven Cleavage Reaction of Cyclobutane. Chemphyschem 2016; 17:46-50. [PMID: 26510491 DOI: 10.1002/cphc.201500874] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2015] [Indexed: 11/07/2022]
Abstract
The cyclobutane cleavage reaction is an important process and has received continuous interest. Herein, we demonstrate the visible laser-driven cleavage reaction of cyclobutane in crystal form by using in situ Raman spectroscopy. Silver(I) coordination-induced strain and thermal effects from the laser irradiation are the two main driving forces for the cleavage of cyclobutane crystals. This work may open up a new avenue for studying cyclobutane cleavage reactions, as compared to the conventional routes using ex situ techniques.
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Affiliation(s)
- Dengtai Chen
- Department of Chemistry, Harbin Institute of Technology, Harbin, 150001, P. R. China
| | - Xijiang Han
- Department of Chemistry, Harbin Institute of Technology, Harbin, 150001, P. R. China.
| | - Yunchen Du
- Department of Chemistry, Harbin Institute of Technology, Harbin, 150001, P. R. China
| | - Hsing-Lin Wang
- Chemistry Division, Los Alamos National Laboratory, Los Alamos, NM 87545, USA
| | - Ping Xu
- Department of Chemistry, Harbin Institute of Technology, Harbin, 150001, P. R. China.
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16
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Zhang WJ, Hou GL, Wang P, Xu HG, Feng G, Xu XL, Zheng WJ. Microsolvation of sodium acetate in water: Anion photoelectron spectroscopy and ab initio calculations. J Chem Phys 2015; 143:054302. [DOI: 10.1063/1.4927668] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Affiliation(s)
- Wen-Jing Zhang
- Beijing National Laboratory for Molecular Sciences, State Key Laboratory of Molecular Reaction Dynamics, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China
| | - Gao-Lei Hou
- Beijing National Laboratory for Molecular Sciences, State Key Laboratory of Molecular Reaction Dynamics, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China
| | - Peng Wang
- Beijing National Laboratory for Molecular Sciences, State Key Laboratory of Molecular Reaction Dynamics, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China
| | - Hong-Guang Xu
- Beijing National Laboratory for Molecular Sciences, State Key Laboratory of Molecular Reaction Dynamics, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China
| | - Gang Feng
- Beijing National Laboratory for Molecular Sciences, State Key Laboratory of Molecular Reaction Dynamics, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China
| | - Xi-Ling Xu
- Beijing National Laboratory for Molecular Sciences, State Key Laboratory of Molecular Reaction Dynamics, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China
| | - Wei-Jun Zheng
- Beijing National Laboratory for Molecular Sciences, State Key Laboratory of Molecular Reaction Dynamics, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China
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17
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Leng CB, Pang SF, Zhang Y, Cai C, Liu Y, Zhang YH. Vacuum FTIR Observation on the Dynamic Hygroscopicity of Aerosols under Pulsed Relative Humidity. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2015; 49:9107-9115. [PMID: 26161462 DOI: 10.1021/acs.est.5b01218] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
A novel approach based on a combination of a pulse RH controlling system and a rapid scan vacuum FTIR spectrometer (PRHCS-RSVFTIR) was utilized to investigate dynamic hygroscopicity of two atmospheric aerosols: ammonium sulfate ((NH4)2SO4) and magnesium sulfate (MgSO4). In this approach, rapid-scan infrared spectra of water vapor and aerosols were obtained to determine relative humidity (RH) in sample cell and hygroscopic property of aerosols with a subsecond time resolution. Heterogeneous nucleation rates of (NH4)2SO4 were, for the first time, measured under low RH conditions (<35% RH). In addition, studies of MgSO4 aerosols revealed that water mass transport may be limited by different processes depending on RH values (surface limited at 40% < RH < 52% and bulk phase limited at RH < 40%). Furthermore, we are also the first to report water diffusion constants in micron size MgSO4 aerosols at very low RH values. Our results have shown that the PRHCS-RSVFTIR is well-suited for determination of hygroscopicity of atmospheric aerosols and water transport and nucleation kinetics of liquid aerosols.
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Affiliation(s)
- Chun-Bo Leng
- †Institute of Chemical Physics, School of Chemistry, Beijing Institute of Technology, Beijing 100081, China
- ‡Department of Chemistry, University of Colorado Denver, Denver, Colorado 80217, United States
| | - Shu-Feng Pang
- †Institute of Chemical Physics, School of Chemistry, Beijing Institute of Technology, Beijing 100081, China
| | - Yun Zhang
- †Institute of Chemical Physics, School of Chemistry, Beijing Institute of Technology, Beijing 100081, China
| | - Chen Cai
- †Institute of Chemical Physics, School of Chemistry, Beijing Institute of Technology, Beijing 100081, China
| | - Yong Liu
- ‡Department of Chemistry, University of Colorado Denver, Denver, Colorado 80217, United States
| | - Yun-Hong Zhang
- †Institute of Chemical Physics, School of Chemistry, Beijing Institute of Technology, Beijing 100081, China
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18
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19
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Kadam SA, Martin K, Haav K, Toom L, Mayeux C, Pung A, Gale PA, Hiscock JR, Brooks SJ, Kirby IL, Busschaert N, Leito I. Towards the Discrimination of Carboxylates by Hydrogen-Bond Donor Anion Receptors. Chemistry 2015; 21:5145-60. [DOI: 10.1002/chem.201405858] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2014] [Indexed: 11/09/2022]
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20
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Henrot S, Soussen C, Dossot M, Brie D. Does deblurring improve geometrical hyperspectral unmixing? IEEE TRANSACTIONS ON IMAGE PROCESSING : A PUBLICATION OF THE IEEE SIGNAL PROCESSING SOCIETY 2014; 23:1169-1180. [PMID: 24723521 DOI: 10.1109/tip.2014.2300822] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
In this paper, we consider hyperspectral unmixing problems where the observed images are blurred during the acquisition process, e.g., in microscopy and spectroscopy. We derive a joint observation and mixing model and show how it affects end-member identifiability within the geometrical unmixing framework. An analysis of the model reveals that nonnegative blurring results in a contraction of both the minimum-volume enclosing and maximum-volume enclosed simplex. We demonstrate this contraction property in the case of a spectrally invariant point-spread function. The benefit of prior deconvolution on the accuracy of the restored sources and abundances is illustrated using simulated and real Raman spectroscopic data.
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21
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Lucas M, Hanson SK, Wagner GL, Kimball DB, Rector KD. Evidence for room temperature delignification of wood using hydrogen peroxide and manganese acetate as a catalyst. BIORESOURCE TECHNOLOGY 2012; 119:174-80. [PMID: 22728198 DOI: 10.1016/j.biortech.2012.05.086] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/28/2011] [Revised: 04/17/2012] [Accepted: 05/18/2012] [Indexed: 05/16/2023]
Abstract
Manganese acetate was found to catalyze the oxidative delignification of wood with hydrogen peroxide at room temperature. The delignification reaction was monitored by optical and Raman microscopy, and liquid chromatography/mass spectrometry. When exposed to H(2)O(2) and Mn(OAc)(3) in aqueous solution, poplar wood sections were converted into a fine powder-like material which consisted of individual wood cells within 4 days at room temperature and without agitation. Optical and Raman microscopy provided the spatial distribution of cellulose and lignin in the wood structure, and showed the preferential oxidation of lignin-rich middle lamellae. Raman spectra from the solid residue revealed a delignified and cellulose-rich material. Glucose yields following enzymatic hydrolysis were 20-40% higher in poplar sawdust pretreated with Mn(OAc)(3) for 2, 4, and 7 days at room temperature than those in sawdust exposed to water only for identical durations, suggesting the viability of this mild, inexpensive method for pretreatment of lignocellulosic biomass.
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Affiliation(s)
- Marcel Lucas
- Chemistry Division, Los Alamos National Laboratory, Los Alamos, NM 87545, USA
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22
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Ma Q, Liu Y, Liu C, He H. Heterogeneous reaction of acetic acid on MgO, α-Al2O3, and CaCO3 and the effect on the hygroscopic behaviour of these particles. Phys Chem Chem Phys 2012; 14:8403-9. [DOI: 10.1039/c2cp40510e] [Citation(s) in RCA: 62] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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23
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Iqbal U, Albaghdadi H, Nieh MP, Tuor UI, Mester Z, Stanimirovic D, Katsaras J, Abulrob A. Small unilamellar vesicles: a platform technology for molecular imaging of brain tumors. NANOTECHNOLOGY 2011; 22:195102. [PMID: 21436507 DOI: 10.1088/0957-4484/22/19/195102] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
Molecular imaging enables the non-invasive investigation of cellular and molecular processes. Although there are challenges to overcome, the development of targeted contrast agents to increase the sensitivity of molecular imaging techniques is essential for their clinical translation. In this study, spontaneously forming, small unilamellar vesicles (sULVs) (30 nm diameter) were used as a platform to build a bimodal (i.e., optical and magnetic resonance imaging (MRI)) targeted contrast agent for the molecular imaging of brain tumors. sULVs were loaded with a gadolinium (Gd) chelated lipid (Gd-DPTA-BOA), functionalized with targeting antibodies (anti-EGFR monoclonal and anti-IGFBP7 single domain), and incorporated a near infrared dye (Cy5.5). The resultant sULVs were characterized in vitro using small angle neutron scattering (SANS), phantom MRI and dynamic light scattering (DLS). Antibody targeted and nontargeted Gd loaded sULVs labeled with Cy5.5 were assessed in vivo in a brain tumor model in mice using time domain optical imaging and MRI. The results demonstrated that a spontaneously forming, nanosized ULVs loaded with a high payload of Gd can selectively target and image, using MR and optical imaging, brain tumor vessels when functionalized with anti-IGFBP7 single domain antibodies. The unique features of these targeted sULVs make them promising molecular MRI contrast agents.
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Affiliation(s)
- Umar Iqbal
- Institute for Biological Sciences, National Research Council of Canada, Ottawa, ON, Canada
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24
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Meresman H, Hudson AJ, Reid JP. Spectroscopic characterization of aqueous microdroplets containing inorganic salts. Analyst 2011; 136:3487-95. [PMID: 21373668 DOI: 10.1039/c0an00843e] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Abstract
We have developed and studied methods to characterize the time-varying composition of liquid microdroplets, under controlled changes to environmental conditions, using Raman tweezers. This work has focussed on measurements of inorganic salts, such as nitrate and sulfate anions, which comprise a major fraction of the dissolved solutes in atmospheric aerosols. The experimental Raman intensities for the anions of inorganic salts in optically tweezed droplets were found to be in good agreement with theoretical estimates of photon scattering. The detection limit for sodium nitrate salt in a single particle was found to be ~4 pg. The mass of an inorganic salt in the droplet can be estimated from the Raman intensity of the anion bands using a calibration curve which is independent of droplet volume. The volume of the droplet, and concentration of solute, can be found directly from the spacing of morphology dependent resonances in the Raman band of water, or indirectly from the integrated-intensity of the Raman band for the solvent. The later strategy eliminates the uncertainty in the collection efficiency of Raman-scattered light related to varying particle sizes.
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Affiliation(s)
- Helena Meresman
- School of Chemistry, University of Bristol, Cantock's Close, Bristol, BS8 1TS, UK
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25
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Ahn KH, Kim SM, Jung HJ, Lee MJ, Eom HJ, Maskey S, Ro CU. Combined Use of Optical and Electron Microscopic Techniques for the Measurement of Hygroscopic Property, Chemical Composition, and Morphology of Individual Aerosol Particles. Anal Chem 2010; 82:7999-8009. [DOI: 10.1021/ac101432y] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Kang-Ho Ahn
- Department of Mechanical Engineering, Hanyang University, Ansan, 425-791, Korea, and Department of Chemistry, Inha University, Incheon, 402-751, Korea
| | - Sun-Man Kim
- Department of Mechanical Engineering, Hanyang University, Ansan, 425-791, Korea, and Department of Chemistry, Inha University, Incheon, 402-751, Korea
| | - Hae-Jin Jung
- Department of Mechanical Engineering, Hanyang University, Ansan, 425-791, Korea, and Department of Chemistry, Inha University, Incheon, 402-751, Korea
| | - Mi-Jung Lee
- Department of Mechanical Engineering, Hanyang University, Ansan, 425-791, Korea, and Department of Chemistry, Inha University, Incheon, 402-751, Korea
| | - Hyo-Jin Eom
- Department of Mechanical Engineering, Hanyang University, Ansan, 425-791, Korea, and Department of Chemistry, Inha University, Incheon, 402-751, Korea
| | - Shila Maskey
- Department of Mechanical Engineering, Hanyang University, Ansan, 425-791, Korea, and Department of Chemistry, Inha University, Incheon, 402-751, Korea
| | - Chul-Un Ro
- Department of Mechanical Engineering, Hanyang University, Ansan, 425-791, Korea, and Department of Chemistry, Inha University, Incheon, 402-751, Korea
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26
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Tafipolsky M, Schmid R. A Consistent Force Field for the Carboxylate Group. J Chem Theory Comput 2009; 5:2822-34. [DOI: 10.1021/ct900304q] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Affiliation(s)
- Maxim Tafipolsky
- Lehrstuhl für Anorganische Chemie 2, Organometallics and Materials Chemistry, Ruhr-Universität Bochum, Universitätsstr. 150, D-44780 Bochum, Germany
| | - Rochus Schmid
- Lehrstuhl für Anorganische Chemie 2, Organometallics and Materials Chemistry, Ruhr-Universität Bochum, Universitätsstr. 150, D-44780 Bochum, Germany
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27
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Wang F, Zhang YH, Zhao LJ, Zhang H, Cheng H, Shou JJ. Micro-Raman study on the conformation behavior of succinate in supersaturated sodium succinate aerosols. Phys Chem Chem Phys 2008; 10:4154-8. [DOI: 10.1039/b719457a] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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28
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Takekiyo T, Yoshimura Y. Raman Study of the Coordination Structure of a Rare Earth−Acetate Complex in Water. J Phys Chem A 2007; 111:6039-43. [PMID: 17567111 DOI: 10.1021/jp070521+] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The Raman spectra of aqueous LnCl(3) x 20H(2)O x CH3(C)OOLi (LnCl(3), rare earth chloride) solutions have been measured in the liquid state. The change of the Raman symmetric Ln(3+)-OH(2) stretching band (v(w)) showed that the decrease in the ionic radius of rare earth (Ln(3+)) ions induces a change in coordination number of the Ln(3+) ion. The two peaks at 946 and 958 cm(-1) of the C-C stretching band (v(CC)) of the acetate ion are assigned to the bidentate ligand and the polymeric chain structure, respectively. The coordination structure of the acetate ion to Ln(3+) ion prefers the bidentate ligand to the polymeric chain structure throughout the rare earth series. The fraction of the bidentate ligand increases with decreasing ionic radius of the Ln(3+) ion. On the basis of the analyses of the v(w) and v(CC) bands, the change in the coordination number of the Ln(3+) ion is mainly due to the structural change (from the polymeric chain structure to the bidentate ligand) of the Ln(3+)-acetate complex rather than a elimination of one water molecule. Our results show that the Ln(3+) ions tend to form the bidentate ligand rather than the divalent (M(2+)) ions.
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Affiliation(s)
- Takahiro Takekiyo
- Department of Applied Chemistry, National Defense Academy, 1-10-20, Hashirimizu, Yokosuka, Kanagawa 239-8686, Japan.
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29
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Li XH, Wang F, Lu PD, Dong JL, Wang LY, Zhang YH. Confocal Raman Observation of the Efflorescence/Deliquescence Processes of Individual NaNO3 Particles on Quartz. J Phys Chem B 2006; 110:24993-8. [PMID: 17149921 DOI: 10.1021/jp064221o] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Confocal Raman spectroscopy was used to study the structural changes of bulk NaNO3 solutions with molar water-to-solute ratios (WSRs) of 54.0-12.3 and NaNO3 droplets (10-100 microm) with WSRs of 9.5-1.0 on a quartz substrate. Upon reduction of the WSR, a blue shift of the symmetric stretching band (nu(1)(NO3-)) from approximately 1048 to approximately 1058 cm(-1) was observed in the confocal Raman spectra with high signal-to-noise ratios. Accordingly, the full width at half-height of the nu(1)(NO3-) band increased from approximately 8.4 cm-1 for the dilute solution (WSR = 54.0) to approximately 15.6 cm-1 for the extremely supersaturated droplet (WSR = 1.0), suggesting the formation of contact ion pairs with different structures. For the O-H stretching band, the ratio of weak hydrogen-bonding components to strong ones, i.e., I(3488)/I(3256), increased from approximately 1.2 at WSR = 54.0 to approximately 7.3 at WSR = 1.0, indicating that the strong hydrogen bonds were heavily destroyed between water molecules especially in the supersaturated droplets. In the humidifying process, two hygroscopic behaviors were observed depending on the morphology of solid NaNO3 particles. No surface water was detected for a solid NaNO3 particle with rhombohedral shape at relative humidities (RHs) below 86%. When the RH increased from 86% to 93%, it suddenly absorbed water and turned into a solution droplet. For a maple-leaf-shaped NaNO3 particle with a rough surface, however, a trace of residual water originally remained on the rough surface even at very low RH according to its Raman spectrum. Its initial water uptake from the ambient occurred at approximately 70% RH. The small amount of initially adsorbed water induced surface rearrangement of the maple-leaf-shaped particle. A further increase of RH made the particle gradually turn into a regular solid core swathed in a solution layer. Eventually, it completely deliquesced in the RH region of 86-93%, similar to the case of the NaNO3 particle with rhombohedral shape.
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Affiliation(s)
- Xiao-Hong Li
- The Institute for Chemical Physics, Beijing Institute of Technology, Beijing, China 100081
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30
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Wahab A, Mahiuddin S, Hefter G, Kunz W, Minofar B, Jungwirth P. Ultrasonic Velocities, Densities, Viscosities, Electrical Conductivities, Raman Spectra, and Molecular Dynamics Simulations of Aqueous Solutions of Mg(OAc)2 and Mg(NO3)2: Hofmeister Effects and Ion Pair Formation. J Phys Chem B 2005; 109:24108-20. [PMID: 16375403 DOI: 10.1021/jp053344q] [Citation(s) in RCA: 56] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The ultrasonic velocities, densities, viscosities, and electrical conductivities of aqueous solutions of magnesium nitrate and magnesium acetate have been measured from dilute to saturation concentrations at 0 < or = t/degrees C < or = 50. The temperature derivative of the isentropic compressibility, kappa(s), became zero at 2.28 and 2.90 mol kg(-1) for Mg(OAc)2 and Mg(NO3)2 solutions, respectively, at 25 degrees C. The total hydration numbers of the dissolved ions were estimated to be, respectively, 24.3 and 19.2 at these concentrations. Differences in kappa(s) for various M2+ salts, using the present and literature data, correlated with reported M2+-OH2 bond lengths and to a lesser extent with cationic charge densities (ionic radii). The influence of anions on kappa(s) appears to follow the Hofmeister series and also correlates approximately with the anionic charge density. Substantial differences between Mg(OAc)2(aq) and Mg(NO3)2(aq) occur with respect to their structural relaxation times (derived from compressibility and viscosity data) and their electrical conductivities. These differences were attributed to a much greater ion association in Mg(OAc)2 solutions. Raman spectra recorded at 28 degrees C confirmed the presence of various types of contact ion pairs including mono- and bidentate complexes in Mg(OAc)2(aq). In Mg(NO3)2(aq), only noncontact ion pairs appear to be formed even at high concentrations. The experimental results are supported by molecular dynamics simulations, which also reveal the much stronger tendency of OAc- compared to NO3- to associate with Mg2+ in aqueous solutions. The simulations also allow an evaluation of the ion-ion and ion-water radial distribution functions and cumulative sums and provide a molecular picture of ion hydration in Mg(OAc)2(aq) and Mg(NO3)2(aq) at varying concentrations.
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Affiliation(s)
- Abdul Wahab
- Material Science Division, Regional Research Laboratory, Jorhat--785 006, Assam, India
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31
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FTIR-ATR chamber for observation of efflorescence and deliquescence processes of NaClO4 aerosol particles on ZnSe substrate. ACTA ACUST UNITED AC 2005. [DOI: 10.1007/bf03182662] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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32
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Zhao LJ, Zhang YH, Wang LY, Hu YA, Ding F. FTIR spectroscopic investigations of supersaturated NaClO4 aerosols. Phys Chem Chem Phys 2005; 7:2723-30. [PMID: 16189586 DOI: 10.1039/b505605e] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Supersaturated NaClO4 aerosols have been studied using a Fourier transform infrared (FTIR) spectrometer coupled with an aerosol flow tube (AFT). Compared with previous Raman results, the water O-H stretching envelope in the supersaturated solutions of NaClO4 aerosols was more structured in response to changing RH, revealing at the same time the existence of water monomers weakly hydrogen-bonded with ClO4- at extremely high concentrations. Due to enhanced ion interactions in the supersaturated solutions of NaClO4 aerosols, the formation of contact ion pairs (CIPs) could be observed without component decomposition for the nondegenerate nu1 band of ClO4-, and the degenerate nu3 band of ClO4- was successfully related to the formation of CIPs in NaClO4 solutions. Based on these observations, a new mechanism featured by the attack of ClO4- upon hydrated Na+ for CIPs formation in the supersaturated solutions of NaClO4 aerosols was further proposed. The anhydrous NaClO4, characterized by the upper limit deliquescence relative humidity (DRH) of approximately 43% and the disappearance of the nu1 band of ClO4- in the infrared spectra, was observed to form on the silicon windows at low RHs.
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Affiliation(s)
- Li-Jun Zhao
- The Institute for Chemical Physics, Beijing Institute of Technology, Beijing, 1000081, P. R. China
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