☆ 4.7 Article

Density, viscosity and spectroscopic studies of the binary system of ethylene glycol plus dimethyl sulfoxide at T = (298.15 to 323.15) K

JOURNAL OF MOLECULAR LIQUIDS (2015)

期刊

JOURNAL OF MOLECULAR LIQUIDS

卷 207, 期 -, 页码 315-322

出版社

ELSEVIER

DOI: 10.1016/j.molliq.2015.04.001

关键词

Density; Viscosity; Excess property; Ethylene glycol; Dimethyl sulfoxide; Intermolecular interaction

类别

Chemistry, Physical Physics, Atomic, Molecular & Chemical

资金

National Natural Science Foundation of China [21166017]
Research Fund for the Doctoral Program of Higher Education of China [20111514120002]
Natural Science Foundation of Inner Mongolia Autonomous Region [2014MS0208]
Inner Mongolia Science and Technology Key Projects
Program for Grassland Excellent Talents of Inner Mongolia Autonomous Region
Program for New Century Excellent Talents in University [NCET-12-1017]
Program for Young Talents of Science and Technology in Universities of Inner Mongolia Autonomous Region [NJYT-12-B13]

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摘要

Densities and viscosities of the binary system of ethylene glycol (EG) (1) + dimethyl sulfoxide (DMSO) (2) over the entire composition range were measured at T = (298.15,303.15, 308.15,313.15, 318.15, and 323.15) K and atmospheric pressure. Based on density and viscosity data, the excess molar volume, viscosity deviation, excess Gibbs free energy of activation for the viscous flow, and apparent molar volumes were calculated. These results were fitted to a Redlich-Kister equation to obtain the coefficients and to estimate the standard deviations between the experimental and calculated quantities. Meanwhile, from the kinematic viscosity data, the enthalpy of activation for viscous flow and entropy of activation for the viscous flow were also calculated. In addition, based on UV-vis and FTIR spectral results, the intermolecular interaction of EG with DMSO was discussed. (C) 2015 Elsevier B.V. All rights reserved.

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Unveiling regularities of B12N12-X nanocages as a drug delivery vehicle for the nitrosourea: The influence of periods and groups

Yan Zhang, Yafei Luo, Lingkai Tang, Mingyan E, Jianping Hu

Summary: This study investigates the effects of different transition metal decorations on B12N12 nanocages on the adsorption properties of nitrosourea drugs using computational methods. The results reveal the presence of weak non-covalent interactions between metals and nanocages, and the interaction between drugs and nanocages plays a significant role in drug adsorption. Compared to free drugs, the adsorption of drugs on nanocages can facilitate electron transfer, reduce energy gaps and chemical hardness, indicating activity at the target site.

JOURNAL OF MOLECULAR LIQUIDS (2024)

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Article Chemistry, Physical

Aromatic aldehyde oxidation by hexacyanoferrate(III) catalyzed by Ru(VI) in alkaline medium

C. I. Alcolado, J. Poblete, L. Garcia-Rio, E. Jimenez, F. J. Poblete

Summary: In this study, the selective oxidation of aromatic aldehydes was investigated using Ru(VI) as a catalyst and hexacyanoferrate (III) as a cooxidant in an alkaline medium. The reaction mechanism involves complex reaction orders for the oxidant and the aromatic aldehyde, while the reaction order for Ru(VI) is one. The proposed mechanism includes two catalytic cycles and the formation and decomposition of complexes. Quantitative structure-activity relationship analysis showed that deactivating groups in the para-position enhance the process.

JOURNAL OF MOLECULAR LIQUIDS (2024)

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Article Chemistry, Physical

Effective removal of hypnotic drug from the aqueous medium through adsorption on graphene oxide magnetic derivatives

Inez A. Barbieri, Marcos L. S. Oliveira, Franciele S. Bruckmann, Theodoro R. Salles, Leonardo Zancanaro, Luis F. O. Silva, Guilherme L. Dotto, Eder C. Lima, Mu. Naushad, Cristiano R. Bohn Rhoden

Summary: This study evaluated the adsorption of zolpidem on magnetic graphene oxide and synthesized magnetic graphene oxide adsorbents for zolpidem removal. The best magnetic nanoadsorbent was found to have a removal percentage of 87.07% at specific pH and temperature conditions. The results suggest that the removal of zolpidem is related to the surface chemistry of the adsorbent rather than the surface area of graphene oxide. The adsorbent showed excellent adsorption efficiency and magnetic behavior, making it a promising material for removing zolpidem from aqueous solutions.

JOURNAL OF MOLECULAR LIQUIDS (2024)

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Article Chemistry, Physical

A sensitivity analysis on thermal conductivity of Al2O3-H2O nanofluid: A case based on molecular dynamics and support vector regression method

Hongyan Huang, Chunquan Li, Siyuan Huang, Yuling Shang

Summary: This study examines the sensitivity of the thermal conductivity of water-based alumina nanofluids to changes in concentration, sphericity, and temperature. The results show that volume fraction and temperature have a significant impact on the thermal conductivity, while sphericity also needs to be considered. A support vector machine regression model was created to analyze the sensitivity of the thermal conductivity to different parameters. The findings indicate that temperature, sphericity, and volume fraction are the most sensitive variables.

JOURNAL OF MOLECULAR LIQUIDS (2024)

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Correction Chemistry, Physical

Canonical partition function and distance dependent correlation functions of a quasi-one-dimensional system of hard disks (vol 387,122572, 2023)

V. M. Pergamenshchik, T. Bryk, A. Trokhymchuk

JOURNAL OF MOLECULAR LIQUIDS (2024)

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Article Chemistry, Physical

Modifying optical nonlinearities of ionic liquid crystal glass by adding gold and carbon nanoparticles

Valentyn Rudenko, Anatolii Tolochko, Svitlana Bugaychuk, Dmytro Zhulai, Gertruda Klimusheva, Galina Yaremchuk, Tatyana Mirnaya, Yuriy Garbovskiy

Summary: This paper reports on the synthesis, structural characterization, spectral and nonlinear-optical properties of glass nanocomposites made of glass forming ionic liquid crystals and nanoparticles. The study reveals that by exciting the nanocomposites within their absorption band, a control over effective optical nonlinearities can be achieved, allowing the modification of the magnitude and sign of the effective nonlinear absorption coefficient. The proposed strategy using metal-alkanoates based glass-forming ionic liquid crystals and nanoparticles shows great potential for the development of nanophotonics and plasmonics technologies.

JOURNAL OF MOLECULAR LIQUIDS (2024)

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