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Thermodynamic Assessment and Microscale Raman Spectroscopy of Binary CO2/CH4 Hydrates Produced During Replacement Applications in Natural Reservoirs. J Mol Liq 2022. [DOI: 10.1016/j.molliq.2022.120739] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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Saha A, Sengupta S, Virmani A, Kumar A. Conformers of Piperazine on air-water interface studied by VSFG spectroscopy. J CHEM SCI 2022. [DOI: 10.1007/s12039-022-02093-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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3
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May sediments affect the inhibiting properties of NaCl on CH4 and CO2 hydrates formation? an experimental report. J Mol Liq 2022. [DOI: 10.1016/j.molliq.2022.119300] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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Wang Y, Li F, Fang W, Sun C, Men Z. Study of hydrogen bonding interactions in ethylene glycol-water binary solutions by Raman spectroscopy. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2021; 260:119916. [PMID: 34020386 DOI: 10.1016/j.saa.2021.119916] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/25/2021] [Accepted: 04/30/2021] [Indexed: 06/12/2023]
Abstract
EG (ethylene glycol) is a good model system for the study of the fundamental hydrogen bonds in aqueous solutions. Using Raman spectroscopy, we have investigated the EG volume fraction induced variation in the hydrogen bonding interactions and conformations of EG-H2O (water) binary solutions. New hydrogen bonding networks is evidenced by the appearance of remarkable changes in Raman spectra and the full width at half maximum (FWHM) when the mixing volume ratio is 0.5. The H-bond in water molecules firstly strengthened and then weakened with the increasing concentration of EG. Meanwhile, the dominant association structure also changed from H2O-H2O to EG-H2O in binary solutions in this process. We provide a simple but effective method for studying EG-H2O binary solutions. It also has exciting potential prospects and can be easily extended to other mixing situations.
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Affiliation(s)
- Ying Wang
- Key Laboratory of Physics and Technology for Advanced Batteries, College of Physics, Jilin University, Changchun 130012, China
| | - Fabing Li
- Key Laboratory of Physics and Technology for Advanced Batteries, College of Physics, Jilin University, Changchun 130012, China
| | - Wenhui Fang
- Key Laboratory of Physics and Technology for Advanced Batteries, College of Physics, Jilin University, Changchun 130012, China; School of Science, Changchun University of Science and Technology, Changchun 130022, China.
| | - Chenglin Sun
- Key Laboratory of Physics and Technology for Advanced Batteries, College of Physics, Jilin University, Changchun 130012, China
| | - Zhiwei Men
- Key Laboratory of Physics and Technology for Advanced Batteries, College of Physics, Jilin University, Changchun 130012, China.
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Li N, Xu Z, Zheng S, Dai H, Wang L, Tian Y, Dong Z, Jiang L. Superamphiphilic TiO 2 Composite Surface for Protein Antifouling. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2021; 33:e2003559. [PMID: 33984172 DOI: 10.1002/adma.202003559] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/25/2020] [Revised: 03/18/2021] [Indexed: 06/12/2023]
Abstract
Unwanted protein adsorption deteriorates fouling processes and reduces analytical device performance. Wettability plays an important role in protein adsorption by affecting interactions between proteins and surfaces. However, the principles of protein adsorption are not completely understood, and surface coatings that exhibit resistance to protein adsorption and long-term stability still need to be developed. Here, a nanostructured superamphiphilic TiO2 composite (TiO2 /SiO2 ) coating that can effectively prevent nonspecific protein adsorption on water/solid interfaces is reported. The confined water on the superamphiphilic surface enables a low adhesion force and the formation of an energy barrier that plays a key role in preventing protein adsorption. This adaptive design protects the capillary wall from fouling in a harsh environment during the bioanalysis of capillary electrophoresis and is further extended to applications in multifunctional microfluidics for liquid transportation. This facile approach is not only perfectly applied in channels with complicated configurations but may also offer significant insights into the design of advanced superwetting materials to control biomolecule adhesion in biomedical devices, microfluidics, and biological assays.
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Affiliation(s)
- Ning Li
- CAS Key Laboratory of Bio-Inspired Materials and Interface Sciences, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing, 100190, P. R. China
- Key Laboratory of Bio-Inspired Smart Interfacial Science and Technology of Ministry of Education, Beijing Advanced Innovation Center for Biomedical Engineering, School of Chemistry, Beihang University, Beijing, 100191, P. R. China
| | - Zhe Xu
- Key Laboratory of Bio-Inspired Smart Interfacial Science and Technology of Ministry of Education, Beijing Advanced Innovation Center for Biomedical Engineering, School of Chemistry, Beihang University, Beijing, 100191, P. R. China
| | - Shuang Zheng
- CAS Key Laboratory of Bio-Inspired Materials and Interface Sciences, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing, 100190, P. R. China
| | - Haoyu Dai
- CAS Key Laboratory of Bio-Inspired Materials and Interface Sciences, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing, 100190, P. R. China
| | - Li Wang
- Key Laboratory of Bio-Inspired Smart Interfacial Science and Technology of Ministry of Education, Beijing Advanced Innovation Center for Biomedical Engineering, School of Chemistry, Beihang University, Beijing, 100191, P. R. China
| | - Ye Tian
- CAS Key Laboratory of Bio-Inspired Materials and Interface Sciences, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing, 100190, P. R. China
| | - Zhichao Dong
- CAS Key Laboratory of Bio-Inspired Materials and Interface Sciences, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing, 100190, P. R. China
| | - Lei Jiang
- CAS Key Laboratory of Bio-Inspired Materials and Interface Sciences, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing, 100190, P. R. China
- Key Laboratory of Bio-Inspired Smart Interfacial Science and Technology of Ministry of Education, Beijing Advanced Innovation Center for Biomedical Engineering, School of Chemistry, Beihang University, Beijing, 100191, P. R. China
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Dong Y, Gao M, Qiu W, Song Z. Effect of microplastics and arsenic on nutrients and microorganisms in rice rhizosphere soil. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2021; 211:111899. [PMID: 33453641 DOI: 10.1016/j.ecoenv.2021.111899] [Citation(s) in RCA: 130] [Impact Index Per Article: 43.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/19/2020] [Revised: 12/19/2020] [Accepted: 01/03/2021] [Indexed: 06/12/2023]
Abstract
The presence of microplastics and arsenic in soil can endanger crop growth; therefore, their effects on the properties of rhizosphere soil should be evaluated. Large (10-100 µm) and small (0.1-1 µm) polystyrene (PSMP) and polytetrafluorethylene (PTFE) particles were added to soil with different arsenic concentrations (1.4, 24.7, and 86.3 mg kg-1) to investigate the combined effect of microplastics and arsenic pollution on rice rhizosphere soil. After the addition of PSMP and PTFE, pH, arsenic (V) and arsenic (III) in the soil were observed to decrease. The interaction of arsenic with PSMP and PTFE resulted in this phenomenon, leading to a decrease of arsenic bioavailability in the soil. PSMP, PTFE, and arsenic reduced the abundance of Proteobacteria, increased the abundance of Chloroflexi and Acidobacteria, and inhibited soil urease, acid phosphatase, protease, dehydrogenase, and peroxidase activity via affecting the tertiary structure of the enzyme. PSMP, PTFE, and arsenic also reduced the available nitrogen and phosphorus content in the soil. Arsenic increased the soil organic matter content, whereas PSMP and PTFE reduced the organic matter content. Furthermore, microplastics inhibited the effects of arsenic on the microbial and chemical properties of the rhizosphere soil. This study revealed the effects of microplastic and arsenic pollution on rice rhizosphere microorganisms and nutrients, and elucidated the mechanism by which these pollutants retard crop growth in the designed growth medium.
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Affiliation(s)
- Youming Dong
- Agro-Environmental Protection Institute, Ministry of Agriculture of China, Tianjin 300191, China
| | - Minling Gao
- Department of Civil and Environmental Engineering, Shantou University, Shantou 515063, China
| | - Weiwen Qiu
- The New Zealand Institute for Plant and Food Research Limited, Private Bag 4704, Christchurch 8140, New Zealand
| | - Zhengguo Song
- Department of Civil and Environmental Engineering, Shantou University, Shantou 515063, China.
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Interaction of solute and water molecules in cryoprotectant mixture during vitrification and crystallization. J Mol Liq 2021. [DOI: 10.1016/j.molliq.2020.114658] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Yang B, Lang H, Liu Z, Wang S, Men Z, Sun C. Three stages of hydrogen bonding network in DMF-water binary solution. J Mol Liq 2021. [DOI: 10.1016/j.molliq.2020.114996] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
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Yang B, Cao X, Lang H, Wang S, Sun C. Study on hydrogen bonding network in aqueous methanol solution by Raman spectroscopy. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2020; 225:117488. [PMID: 31654975 DOI: 10.1016/j.saa.2019.117488] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/14/2019] [Revised: 08/07/2019] [Accepted: 08/25/2019] [Indexed: 06/10/2023]
Abstract
The Raman spectra of aqueous methanol solution with various concentrations were measured at room temperature and atmospheric pressure. We found that the CO stretching vibration mode of methanol showed a significant blue shift at Vm (Vm represents the volume fraction of methanol) >0.4, while the CH symmetric and asymmetric stretching vibration modes exhibited red shift under the same conditions. These results illustrate that the variation of hydrogen bond between methanol and water molecules lead to a phase transition of the methanol-water complex at Vm = 0.4. Furthermore, the red shift of the CH vibration mode indicates that there is no hydrogen bond formed between the CH3 group of methanol and water molecules. In addition, we found that the frequency shift of C-H is affected by the hydrogen bond C-O…H-O formed between methanol and water molecules, and the corresponding theoretical discussion is given. Finally, the phase transition process of methanol-water complex in methanol-water binary solution was given by theoretical analysis.
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Affiliation(s)
- Bo Yang
- Coherent Light and Atomic and Molecular Spectroscopy Laboratory, College of Physics, Jilin University, Changchun 130012, China
| | - Xianwen Cao
- Coherent Light and Atomic and Molecular Spectroscopy Laboratory, College of Physics, Jilin University, Changchun 130012, China
| | - Hongzhi Lang
- Coherent Light and Atomic and Molecular Spectroscopy Laboratory, College of Physics, Jilin University, Changchun 130012, China
| | - Shenghan Wang
- Coherent Light and Atomic and Molecular Spectroscopy Laboratory, College of Physics, Jilin University, Changchun 130012, China; Key Laboratory of Physics and Technology for Advanced Batteries (Ministry of Education), College of Physics, Jilin University, Changchun 130012, China; State Key Laboratory of Superhard Materials, College of Physics, Jilin University, Changchun 130012, China.
| | - Chenglin Sun
- Coherent Light and Atomic and Molecular Spectroscopy Laboratory, College of Physics, Jilin University, Changchun 130012, China; Key Laboratory of Physics and Technology for Advanced Batteries (Ministry of Education), College of Physics, Jilin University, Changchun 130012, China.
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Wang Y, Li F, Li Z, Sun C, Wang S, Men Z. Raman spectra study hydrogen bonds network in ice Ih with cooling. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2019; 220:117131. [PMID: 31158605 DOI: 10.1016/j.saa.2019.05.036] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/03/2019] [Revised: 05/04/2019] [Accepted: 05/12/2019] [Indexed: 06/09/2023]
Abstract
The Raman spectra of ice Ih (H2O and HDO) in the temperatures range from 253 to 83 K are measured. The results show that Raman peaks shift to low- or high-wavenumber due to the influence of temperature on hydrogen bonds dynamics. Importantly, Raman shifts are linear relationship with temperatures and its slope fully reflects the change of hydrogen bonds length. Finally, Raman intensity of ice Ih dependent on temperatures are also discussed.
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Affiliation(s)
- Ying Wang
- Coherent Light and Atomic and Molecular Spectroscopy Laboratory, College of Physics, Jilin University, Changchun 130012, China
| | - Fabing Li
- Coherent Light and Atomic and Molecular Spectroscopy Laboratory, College of Physics, Jilin University, Changchun 130012, China
| | - Zhanlong Li
- Coherent Light and Atomic and Molecular Spectroscopy Laboratory, College of Physics, Jilin University, Changchun 130012, China
| | - Chenglin Sun
- Key Laboratory of Physics and Technology for Advanced Batteries, College of Physics, Jilin University, Changchun 130012, China
| | - Shenghan Wang
- Coherent Light and Atomic and Molecular Spectroscopy Laboratory, College of Physics, Jilin University, Changchun 130012, China; Key Laboratory of Physics and Technology for Advanced Batteries, College of Physics, Jilin University, Changchun 130012, China.
| | - Zhiwei Men
- Coherent Light and Atomic and Molecular Spectroscopy Laboratory, College of Physics, Jilin University, Changchun 130012, China.
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Wang Y, Li F, Li Z, Sun C, Men Z. Si quantum dots enhanced hydrogen bonds networks of liquid water in a stimulated Raman scattering process. OPTICS LETTERS 2019; 44:3450-3453. [PMID: 31305545 DOI: 10.1364/ol.44.003450] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/24/2019] [Accepted: 06/17/2019] [Indexed: 06/10/2023]
Abstract
Stimulated Raman scattering (SRS) of silicon quantum dots (Si QD) water solutions of different sizes (2 and 5 nm) are investigated using Nd:YAG laser. Since strong and weak hydrogen bonds are formed by the charge transfer between water molecules and Si QDs, two SRS peaks of OH stretching vibrations of Si QDs solutions are observed in the forward direction. Simultaneously, characteristic feature peaks related to the interaction between OH groups and excess electrons are obtained in the backward SRS of 2 nm Si QDs solutions. The excess electrons induce a strong electrostatic field, leading to the transformation from water to an ice-VIII structure.
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Hu Q, Zhao H, Ouyang S. Interpreting the Raman OH/OD stretch band of ice from isotopic substitution and phase transition effects. Phys Chem Chem Phys 2018; 20:28600-28605. [PMID: 30406247 DOI: 10.1039/c8cp06281a] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Understanding the OD/OH stretch band (ODSB/OHSB) features for the Raman spectra of ice remains a challenge. This study measures the ODSB/OHSB for isotopically substituted D2O/H2O (with volume ratio VD2O/VH2O of 1/0, 4/1, 1/1, 1/4 and 0/1) ice Ih, and compares them with those for liquid water and ices in various phases. The data show that istopic substitution (IS) narrows the ODSB/OHSB of ice from both the low-frequency and the high-frequency side to the middle of the OD/OH stretch regions, but in contrast, IS enhances the high-frequency part of the ODSB/OHSB for liquid water. The ODSB/OHSB features of ice and their dependences on IS and phase transition can be understood basically from the concept that ice has diverse HB configurations that depend on the ice lattice form and the proton (dis)order and essentially determine the intermolecular vibrational couplings in ice. Combined with a Gaussian fitting analysis, more details for the HB configurations in ice are revealed: tetrahedral HB profiles, which are responsible for the main peak, are dominant and non-tetrahedral ones, which bring about the high-frequency shoulders, are also important. On IS, the proportion of tetrahedral HB profiles sees a dramatic decrease.
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Affiliation(s)
- Qingcheng Hu
- Key Laboratory of Integrated Exploitation of Bayan Obo Multi-Metal Resources, Inner Mongolia University of Science and Technology, Baotou 014010, China.
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