非离子表面活性剂在酸盐四水合和相关盐中的自组合
Yashfeen Zahid1, Yizhen Li2, Ömer Dag3,4
1Sustainable Environment and Energy Systems, Middle East Technical University Northern Cyprus Campus, Kalkanlı, Güzelyurt, via Mersin 10, Türkiye.
Soft matter
|January 22, 2025
概括
这项研究揭示了离子如何在缩盐溶液中影响表面活性剂的自我组装. 酸促进独特的液晶相和增强的热稳定性,表明电化学应用的潜力.
科学领域:
- 材料科学 材料科学 材料科学
- 物理化学 物理化学
- 合体和表面化学
背景情况:
- 在极端的盐条件下,两性分子的自我组装还没有完全被理解.
- 研究离子对表面活性剂组织的特定影响对于设计新材料至关重要.
研究的目的:
- 为了研究离子对非离子表面活性剂C12E10在极端盐度下自我组装的特定影响.
- 了解控制水性融物中的两性分子组织的分子间相互作用.
主要方法:
- 构建二进制相位图的Ca(NO3) 2·4H2O-C12E10混合物.
- 盐表面活性剂系统的热和光谱分析 (ATR-FTIR).
- 与其他盐水合物 (CaCl2,CaBr2,Zn,Al,Li) 的酸盐进行比较.
主要成果:
- (Ca) (NO3) 2·4H2O-C12E10混合物形成了热和状相,与CaCl2或CaBr2系统不同.
- 与其他酸盐系统相比,Ca(NO3) 2系统的同位素化温度更高.
- Ca2+离子通过离子双极相互作用与表面活性剂头组相互作用,通过中间化能量和减少离子配对增强.
结论:
- 介质金属离子水化/协调能量导致更强的金属表面活性剂相互作用和热稳定的液晶.
- 在Ca(NO3) 2系统中减少的离子对形成增强了Ca2+-氧乙烯组相互作用,促进了盐分.
- 在电化学应用中,Ca(NO3) 2·xH2O-C12E10系统显示出有前途的电导率.
相关概念视频
03:10Precipitation Reactions
50.0K
In a precipitation reaction, aqueous solutions of soluble salts react to give an insoluble ionic compound – the precipitate. The reaction occurs when oppositely charged ions in solution overcome their attraction for water and bind to each other, forming a precipitate that separates out from the solution. Since such reactions involve the exchange of ions between ionic compounds in aqueous solution, they are also referred to as double displacement, double replacement, exchange reactions, or...
50.0K
01:19Ionic Strength: Effects on Chemical Equilibria
1.3K
The addition of an inert ionic compound increases the solubility of a sparingly soluble salt. For example, adding potassium nitrate to a saturated solution of calcium sulfate significantly enhances the solubility of calcium sulfate. Le Châtelier's principle cannot predict this shift in the equilibrium. Instead, this could be explained in terms of changes in the effective concentration of the ions in solution in the presence of added inert salt.
In this solution, the primary...
In this solution, the primary...
1.3K
02:42Ionic Crystal Structures
14.1K
Ionic crystals consist of two or more different kinds of ions that usually have different sizes. The packing of these ions into a crystal structure is more complex than the packing of metal atoms that are the same size.
Most monatomic ions behave as charged spheres, and their attraction for ions of opposite charge is the same in every direction. Consequently, stable structures for ionic compounds result (1) when ions of one charge are surrounded by as many ions as possible of the opposite...
Most monatomic ions behave as charged spheres, and their attraction for ions of opposite charge is the same in every direction. Consequently, stable structures for ionic compounds result (1) when ions of one charge are surrounded by as many ions as possible of the opposite...
14.1K
03:34Ionic Compounds: Formulas and Nomenclature
66.3K
An element composed of atoms that readily lose electrons (a metal) can react with an element composed of atoms that readily gain electrons (a nonmetal) to produce ions through complete electron transfer. The compound formed by this transfer is stabilized by the electrostatic attractions (ionic bonds) between the oppositely charged ions.
66.3K
02:55Solubility of Ionic Compounds
62.4K
Solubility is the measure of the maximum amount of solute that can be dissolved in a given quantity of solvent at a given temperature and pressure. Solubility is usually measured in molarity (M) or moles per liter (mol/L). A compound is termed soluble if it dissolves in water.
62.4K
01:09Colloidal precipitates
495
The high insolubility of some precipitates can result in an unfavorable relative supersaturation. This can lead to colloidal particles with a large surface-to-mass ratio, where adsorption is promoted. For instance, in the precipitation of silver chloride, silver ions are adsorbed on the surface of the colloidal particles, forming a primary layer. This layer attracts ions of opposite charge (such as nitrate ions), forming a diffuse secondary layer of adsorbed ions. This electric double layer...
495