二氧化碳可切换表面活性剂在反应性胶体制备和应用方面的进展

IF 15.9 1区 化学 Q1 CHEMISTRY, PHYSICAL
Saeid Dowlati , Rasoul Mokhtari , Lena Hohl , Reinhard Miller , Matthias Kraume
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引用次数: 2

摘要

CO2可切换表面活性剂具有选择性的表面活性,可以通过向溶液中添加或去除CO2来激活或失活。这一特性使我们能够将它们用于制造反应性胶体,这是一组分散的系统,可以通过改变环境条件来控制。在化学过程中,包括萃取、反应或多相催化,胶体在过程的某些特定步骤中是必需的,在这些步骤中,不混相或反应物之间需要最大的接触面积。之后,胶体必须被打破,以进行产品、溶剂和试剂的后处理,这可以通过在表面活性剂稳定的胶体中使用二氧化碳切换表面活性剂来促进。这些表面活性剂主要是阳离子的,在注入二氧化碳气体时,可以通过含氮基团的质子化来激活。另外,co2可切换的超两亲体可以通过至少一种co2可切换组分之间的非共价键形成。到目前为止,可切换co2表面活性剂已用于可切换co2的球形和蠕虫状胶束、囊泡、乳液、泡沫和皮克林乳液。在这里,我们回顾了这种反应性胶体的制备过程、化学结构、开关方案、稳定性、环境条件和设计理念。它们的应用领域很广泛,包括乳液聚合、催化、土壤洗涤、药物输送、萃取、粘度控制和石油运输。我们还强调了它们在二氧化碳辅助提高采收率(EOR)过程中的应用,作为应对气候变化的碳捕获、利用和储存的一种有前景的方法。
本文章由计算机程序翻译,如有差异,请以英文原文为准。

Advances in CO2-switchable surfactants towards the fabrication and application of responsive colloids

Advances in CO2-switchable surfactants towards the fabrication and application of responsive colloids

CO2-switchable surfactants have selective surface-activity, which can be activated or deactivated either by adding or removing CO2 from the solution. This feature enables us to use them in the fabrication of responsive colloids, a group of dispersed systems that can be controlled by changing the environmental conditions. In chemical processes, including extraction, reaction, or heterogeneous catalysis, colloids are required in some specific steps of the processes, in which maximum contact area between immiscible phases or reactants is desired. Afterward, the colloids must be broken for the postprocessing of products, solvents, and agents, which can be facilitated by using CO2-switchable surfactants in surfactant-stabilized colloids. These surfactants are mainly cationic and can be activated by the protonation of a nitrogen-containing group upon sparging CO2 gas. Also, CO2-switchable superamphiphiles can be formed by non-covalent bonding between components at least one of which is CO2-switchable. So far, CO2-switchable surfactants have been used in CO2-switchable spherical and wormlike micelles, vesicles, emulsions, foams, and Pickering emulsions. Here, we review the fabrication procedure, chemical structure, switching scheme, stability, environmental conditions, and design philosophy of such responsive colloids. Their fields of application are wide, including emulsion polymerization, catalysis, soil washing, drug delivery, extraction, viscosity control, and oil transportation. We also emphasize their application for the CO2-assisted enhanced oil recovery (EOR) process as a promising approach for carbon capture, utilization, and storage to combat climate change.

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来源期刊
CiteScore
28.50
自引率
2.60%
发文量
175
审稿时长
31 days
期刊介绍: "Advances in Colloid and Interface Science" is an international journal that focuses on experimental and theoretical developments in interfacial and colloidal phenomena. The journal covers a wide range of disciplines including biology, chemistry, physics, and technology. The journal accepts review articles on any topic within the scope of colloid and interface science. These articles should provide an in-depth analysis of the subject matter, offering a critical review of the current state of the field. The author's informed opinion on the topic should also be included. The manuscript should compare and contrast ideas found in the reviewed literature and address the limitations of these ideas. Typically, the articles published in this journal are written by recognized experts in the field.
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