JOURNAL OF MATERIALS SCIENCE
·
2021
·Vol. 56
·期 24
·13590-13603
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IF 4.22
Lin Feng,Meng Xiangyan,Tang Ke,Wu Lishun,Yuan Ruting,Liao Lijun
The design of the hierarchical structure and geometry of nanomaterials at the molecular and macroscopic level are crucial to determine their properties and applications. In this work, we describe a facile and effective method to control over the mesostructure and morphology of ethane-bridged PMOs with the assistance of various organic salts under basic conditions. It is demonstrated that the specific interaction between the surfactant and organic salts is responsible for the shape of surfactant micelles and the formation of ethane-bridged PMOs. Specifically, the structure and the hydrophobicity of the organic salts play a major role. The addition of organic salts with more hydrophobic organic moieties, such as sodium salicylate, sodium succinate and sodium benzoate, will increase the surfactant packing parameter more effectively, leading to the mesophase change from cubic Pm3n to 2-D hexagonal P6mm structure, whereas the addition of organic salts with lower hydrophobicity and larger polar head, like sodium oxalate, will result in the mesophase transformation from cubic Pm3n to 3-D hexagonal P6 3 /mmc structure. Moreover, the addition of organic salts will not only affect the micellar formation, but also influence the charge matching at the surfactant/silicate interface as well as the condensation and aggregation kinetics of silica species. The addition of large amount of any organic salts will eventually lead to the formation of PMOs with disordered mesoporous structure. Graphical abstract
研究领域:
材料化学
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纳米科技
✓ 已验证
产品关联
DOI
高影响因子
FOOD CHEMISTRY
·
2024
·
IF 8.5
Lingyu Han,Fang Ma,Ping He,Qun Zhou,Zhanping Li,Suqin Sun
The characterization of structure of organic salts in complex mixtures has been a difficult problem in analytical chemistry. In the analysis of Scutellariae Radix (SR), the pharmacopoeia of many countries stipulates that the quality control component is baicalin (≥9% by high performance liquid chromatography (HPLC)). The component with highest response in SR was also baicalin detected by liquid chromatography-mass spectrometry (LC-MS). However, in the attenuated total reflection Fourier transform infrared spectroscopy, the carbonyl peak of glucuronic acid of baicalin did not appear in SR. The results of element analysis, time of flight secondary ion mass spectrometry, matrix assisted laser desorption ionization mass spectrometry and solid-state nuclear magnetic resonance all supported the existence of baicalin magnesium salt. Based on this, this study proposes an analysis strategy guided by infrared spectroscopy and combined with multi-spectroscopy techniques to analyze the structure of organic salt components in medicinal plant. It is meaningful for the research of mechanisms, development of new drugs, and quality control.
研究领域:
药学
·
分析化学
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植物化学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Foods
·
2022
·Vol. 11
·期 2
·173
·
IF 5.561
Yanjiao Chu,Shanggui Deng,Guancheng Lv,Mingao Li,Hongli Bao,Yuanpei Gao,Ru Jia
In order to improve the quality of squid surimi products, squid surimi gels were prepared using several types of organic salts under two heating conditions to study the effects of organic salts on squid gel properties. Compared with the NaCl group, organic salts reduced the solubilization capacity of myofibrillar protein, and significant (p< 0.05) decreases in the breaking force, breaking distance, texture, and water-holding capacity of the gel were observed in the sodium gluconate group, while significant (p< 0.05) increases in the breaking force, breaking distance, texture, and water-holding capacity of the gel were observed in the sodium citrate and sodium tartrate groups. Although the mixed addition of NaCl and organic salt improved surimi gel quality, the effective improvement was still lower than that of only organic salt. Rheological properties indicated that sodium citrate and sodium tartrate had high viscoelasticity. The squid surimi gel prepared by direct heating exhibited better properties than gels prepared by two-step heating. The chemical force of squid gel prepared with sodium citrate and sodium tartrate formed a stronger matrix than the gels prepared with other salts. For color, the addition of sodium citrate resulted in an undesirable color of squid surimi gels, while the addition of sodium tartrate improved the whiteness of the surimi gel. The results showed that the quality of surimi gel was dependent upon the choice of heating method and the types of salt used. Sodium citrate and sodium tartrate could significantly improve the gel properties of squid surimi. This study provides reliable guidance for improving the overall quality of squid surimi gels.Keywords:squid surimi;myofibrillar protein;gel properties;organic salt
研究领域:
食品科学
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生物化学
✓ 已验证
DOI
PubMed
高影响因子
Science China-Chemistry
·
2015
·Vol. 59
·期 1
·114-121
·
IF 1.695
Zhao Wenping,Jin Yu,Zhang Wen
Two phase transition compounds, diethylammonium 1,5-naphthalenedisulfonate (1) and cyclohexylammonium 1,5-naphthalenedisulfonate (2), were screened from a series of organic salts based on 1,5-naphthalenedisulfonate. The phase transition behaviors were studied by differential scanning calorimetry, single-crystal X-ray analysis and dielectric measurements. Compounds 1 and 2 undergo phase transitions at about 202 and 148 K, respectively, accompanied by distinct dielectric changes. The origin of the phase transitions was ascribed to motional changes of the cations in the crystal lattices.
研究领域:
材料科学
·
化学
✓ 已验证
DOI
高影响因子
FUEL
·
2021
·
IF 6.609
Mingwei Xia,Wei Chen,Jing Wu,Yingquan Chen,Haiping Yang,Xu Chen,Danchen Zhu,Hanping Chen
Developing green, high efficient and precursor-universal pore tailoring approach is a major issue for biomass-derived porous carbon (BPC). In this study, the unique effect of organic salt porogen (potassium acetate) was first elucidated through investigating the component and temperature-dependent structure evolution of BPC during pyrolysis-activation process. Hydrogen bonding with biomass char rather than melting would facilitate the dispersion of porogen. Potassium acetate would catalyze cracking of biopolymers (<400 ℃) into H 2 , CO 2 , CO and CH 4 etc. and lead to plentiful macropores by gas blowing. And it decomposed into potassium species that etch the char to form micropores. Differently, cellulose and hemicellulose char intermediates with abundant carbonyl incline to retain the porous structure. BPCs from cellulose and hemicellulose possess specific surface area (SSA) ~ 1700 m 2 /g with nano-passages and three-dimensional layer framework structure. While lignin-derived BPC performs equally high SSA but bulky microporous structure. Besides, carbon layer would form from acetate decomposition and deposited on the char surface thus lead to similar surface structure. This study provides a novel insight of interaction between biomass char intermediate and organic salt porogen, which may demonstrate a precursor-universal and high efficient approach for BPC preparation.
研究领域:
材料科学
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化学工程
·
生物质能
✓ 已验证
DOI
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
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2017
·
IF 4.233
Bingjie Hou,Huaizhi Liu,Shaopeng Qi,Yinyan Zhu,Bo Zhou,Xiaoqing Jiang,Lihua Zhu
High quality pristine graphene (PG) dispersions are prepared conveniently via an organic salts assisted exfoliation method in a green, non-toxic, cheap and low boiling point solvent: ethanol. The PG is characterized by transmission electron microscopy and atomic force microscopy. Furthermore, the PG is used as an electrode material for fabrication of nonenzymatic sensor of hydrogen peroxide (H 2 O 2 ). This nonenzymatic sensor shows enhanced electrocatalytic activity towards H 2 O 2 and displays two linear ranges from 2.0 to 37.0 μM and 37.0 to 437.0 μM with a detection limit of 0.19 μM (S/N = 3), which is comparable to those electrochemical sensors based on metal oxide or noble metal/graphene composites.
研究领域:
材料科学
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电化学
·
分析化学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF CHEMICAL AND ENGINEERING DATA
·
2015
·
IF 2.037
Jing Gao,Li Chen,Zongcheng Yan
This study evaluated the effects of ionic liquids (ILs) on the formation of aqueous biphasic systems (ABS) with organic salts. Phase diagrams, tie lines, and respective tie line lengths were determined at 298 K and atmospheric pressure. Using imidazolium-based ILs, the effects of the IL anions and salt anions, as well as the addition of dipolar aprotic solvents (DAS) on ABS formation were investigated. In general, the IL with hydrogen bond basicity ranging between 0.38 and 0.60 formed ABS with organic salts. However, those below this range were insoluble, and those above this range did not undergo phase separation. The salt anion capacity to induce ABS increased with increased valence and decreased Gibbs free energy of hydration. Moreover, the biphasic area for the IL-based ABS reduced with increased DAS concentration.
研究领域:
化学工程
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物理化学
✓ 已验证
产品关联
DOI
高影响因子
FUEL
·
2023
·
IF 7.4
Xiangyu Wang,Zhengjian Hou,Mingwei Zhao,Xuhao Wang,Peng Liu,Xufeng Lin,Zizhao Wang,Zhenfeng Ma,Caili Dai
Clean fracturing fluids (CFFs) hold great potential for the development of unconventional reservoirs due to their characteristics (e.g., fracturing-oil expulsion integration and low formation damage). Organic salts, as adjuvants, play a significant role in regulating the performance of CFFs. In this work, four CFFs containing different organic salts were prepared to investigate the impact of functional groups in organic salts on the CFF performance. Results show that the functional groups markedly influence the rheological properties, temperature resistance and drag reduction performances of CFFs through inducing the micelle formation and thus enhancing the micelle network strength. Sodium 4-vinylbenzenesulfonate (SV) with vinyl endowed the CFF with the stronger micelle network. Furthermore, the functional groups were found to impact the adsorption of surfactants at interface, which affects the oil–water interfacial tensions and regulates the spontaneous imbibition performance of CFFs. SV enables a higher imbibition efficiency of 25.6 % after 90 h. Density functional theory (DFT) calculation results confirmed that the functional groups of salts are capable of manipulating the interactions between salt anions and surfactant, ultimately determining the CFF performance. This work provides guidance for the selection of salt additives to improve the CFF performance.
研究领域:
石油工程
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化学工程
✓ 已验证
产品关联
DOI
高影响因子
CHEMICAL ENGINEERING SCIENCE
·
2024
·
IF 4.1
Min Han,Lexuan Zhao,Hongye Cheng,Zhiwen Qi
Efficient deterpenation of essential oils is crucial for obtaining high value-added products. In this work, a biphasic extraction system integrated with associative extraction was utilized to enhance fractionation of terpenoids and terpenes, where organic salt and organic solvent were employed as extractants in each phase. Ten different organic solvents were evaluated in terms of their phase behavior, extraction performance, and EHS-related properties. The positive or negative effect of organic solvents on biphasic extraction performance was elucidated through molecular dynamics simulations and FT-IR spectra analysis. The results indicate that an organic solvent lacking hydrogen bonding ability can reduce its interaction with organic salt or terpenoids, thereby exerting a positive contribution to biphasic extraction. For crude orange sweet essential oil, the biphasic system containing tetrabutylammonium chloride and n-hexane achieves a 6.2-fold concentration of terpenoids, demonstrating its effectiveness in enhancing extractive deterpenation of essential oil.
研究领域:
植物化学
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食品科学
·
分离技术
✓ 已验证
产品关联
DOI
高影响因子
RSC Advances
·
2020
·Vol. 10
·期 3
·1595-1602
·
IF 3.119
Wei Zheng,Yawei Shi,Guozhu Liu,Bin Zhao,Liang Wang
Using organic salts as precursors, heteroatom-doped porous carbons prepared by in situ activation had surface areas of up to 2703 m2 g−1. These porous carbons have been found to be effective adsorbents for adsorption of sulfamethoxazole (SMX) from water. The effects of precursor type, calcination temperature, pH and ionic strength as well as the regeneration properties were investigated. The different adsorption performances of porous carbons were related to their textural structures and chemical properties, and a reasonable adsorption mechanism was proposed. The effects of different heteroatom functional groups on the adsorption of SMX were also analyzed in detail. For potential practical applications, the performance of the porous carbon for removing SMX from real water was also tested.
研究领域:
环境科学
·
材料科学
✓ 已验证
DOI
PubMed
高影响因子
Journal of Materiomics
·
2021
·
IF 6.425
Bin Liang,Kangwei Liu,Peng Liu,Long Qian,Guangyao Zhao,Weisheng Pan,Chaojie Chen
How to improve the efficiency of liquid-phase shear exfoliation (LPSE) for mass production of large-size graphene nanosheets still remains an ongoing challenge. In this work, we have developed a LPSE method using a rotor-stator mixer. It is quite simple and efficient by exfoliation of expanded graphite (EG) in N-methyl-2-pyrrolidone (NMP) with the assistance of organic salts including sodium citrate, potassium citrate and sodium tartrate. The LPSE of EG in NMP can provide improved yields, up to 6 times as high as values from exfoliation of natural flake graphite (NFG). The additive of organic salts in NMP can make a further improvement in graphene yields, 1.5 times higher than that obtained only in NMP. Remarkably, the yields of the as-exfoliated graphene are as high as 10% under optimal conditions, and up to 50% after multiple-cycle exfoliation. Organic salts in LPSE act as analogue grinding aids enhancing the applied shear forces and thus contributing to the improved efficiency of LPSE, but they do not intercalate into the interplanar spaces of graphite. This facile LPSE method should have excellent potential in the large scale production of graphene nanosheets for numerous applications.
研究领域:
材料科学
·
化学工程
✓ 已验证
DOI
高影响因子
JOURNAL OF DISPERSION SCIENCE AND TECHNOLOGY
·
2020
·
IF 1.701
Kaihe Lv,Wenjian Huang,Shaoyan Wang,Yugui Han,Qiuxia Wang,Tunan Sun,Hui Yan,Han Jia
The organic salt sodium 1-naphthalenesulfonate (SNS) with two conjugated structures was introduced to evaluate its effects on the interfacial activity of three cationic surfactants (1-dodecyl-3-methylimidazolium bromide (M12), N-dodecyl-N-methylpyrrolidinium bromide (L12), and dodecyltrimethylammonium bromide (DTAB)) at water/model oil interface. The intermolecular interactions of surfactants/SNS, mainly including electrostatic attraction and π-π stacking interaction, dominated the amplitudes of IFT reduction. Another three salts and two surfactants were employed in control experiments to demonstrate the essential roles of π-π stacking interaction and electrostatic attraction in the dramatic IFT reduction, respectively. Furthermore, the proposed models about the surfactant/salt interfacial interaction were repeatedly confirmed by the calculations of their interaction energies and the investigations on the effects of NaCl and temperature. In addition, the M12/SNS system with the optimum interfacial activity showed the remarkable ability to improve crude oil recovery.
研究领域:
化学
·
石油工程
✓ 已验证
产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）