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The flotation and adsorption of mixed collectors on oxide and silicate minerals
Advances in Colloid and Interface Science ( IF 15.6 ) Pub Date : 2017-11-11 , DOI: 10.1016/j.cis.2017.11.003
Longhua Xu , Jia Tian , Houqin Wu , Zhongyuan Lu , Wei Sun , Yuehua Hu

The analysis of flotation and adsorption of mixed collectors on oxide and silicate minerals is of great importance for both industrial applications and theoretical research. Over the past years, significant progress has been achieved in understanding the adsorption of single collectors in micelles as well as at interfaces. By contrast, the self-assembly of mixed collectors at liquid/air and solid/liquid interfaces remains a developing area as a result of the complexity of the mixed systems involved and the limited availability of suitable analytical techniques. In this work, we systematically review the processes involved in the adsorption of mixed collectors onto micelles and at interface by examining four specific points, namely, theoretical background, factors that affect adsorption, analytical techniques, and self-assembly of mixed surfactants at the mineral/liquid interface. In the first part, the theoretical background of collector mixtures is introduced, together with several core solution theories, which are classified according to their application in the analysis of physicochemical properties of mixed collector systems. In the second part, we discuss the factors that can influence adsorption, including factors related to the structure of collectors and environmental conditions. We summarize their influence on the adsorption of mixed systems, with the objective to provide guidance on the progress achieved in this field to date. Advances in measurement techniques can greatly promote our understanding of adsorption processes. In the third part, therefore, modern techniques such as optical reflectometry, neutron scattering, neutron reflectometry, thermogravimetric analysis, fluorescence spectroscopy, ultrafiltration, atomic force microscopy, analytical ultracentrifugation, X-ray photoelectron spectroscopy, Vibrational Sum Frequency Generation Spectroscopy and molecular dynamics simulations are introduced in virtue of their application. Finally, focusing on oxide and silicate minerals, we review and summarize the flotation and adsorption of three most widely used mixed surfactant systems (anionic–cationic, anionic–nonionic, and cationic–nonionic) at the liquid/mineral interface in order to fully understand the self-assembly progress. In the end, the paper gives a brief future outlook of the possible development in the mixed surfactants.



中文翻译:

混合捕集剂在氧化物和硅酸盐矿物上的浮选和吸附

氧化物和硅酸盐矿物上混合捕收剂的浮选和吸附分析对于工业应用和理论研究均具有重要意义。在过去的几年中,在理解胶束以及界面中单个捕集剂的吸附方面已经取得了重大进展。相反,由于所涉及的混合系统的复杂性和适用的分析技术的有限性,在液体/空气和固体/液体界面处的混合收集器的自组装仍然是一个发展中的领域。在这项工作中,我们通过检查四个具体点,即理论背景,影响吸附的因素,分析技术,并在矿物/液体界面处自组装混合表面活性剂。在第一部分中,介绍了捕收剂混合物的理论背景,以及几种核心溶液理论,并根据它们在混合捕集剂系统的理化性质分析中的应用进行了分类。在第二部分中,我们讨论了影响吸附的因素,包括与收集器的结构和环境条件有关的因素。我们总结了它们对混合系统吸附的影响,目的是为迄今为止在该领域中取得的进展提供指导。测量技术的进步可以极大地增进我们对吸附过程的理解。因此,在第三部分中,采用了现代技术,例如光学反射法,中子散射,中子反射法,凭借它们的应用,介绍了热重分析,荧光光谱,超滤,原子力显微镜,分析超离心,X射线光电子能谱,振动总和频率产生谱和分子动力学模拟。最后,针对氧化物和硅酸盐矿物,我们回顾并总结了液/矿界面上三种最广泛使用的混合表面活性剂体系(阴离子-阳离子,阴离子-非离子和阳离子-非离子)的浮选和吸附,以便全面理解自组装进度。最后,本文对混合表面活性剂的可能发展作了简要的展望。借助它们的应用,介绍了X射线光电子能谱,振动总和频率产生谱和分子动力学模拟。最后,针对氧化物和硅酸盐矿物,我们回顾并总结了液/矿界面上三种最广泛使用的混合表面活性剂体系(阴离子-阳离子,阴离子-非离子和阳离子-非离子)的浮选和吸附,以便全面理解自组装进度。最后,本文对混合表面活性剂的可能发展作了简要的展望。借助它们的应用,介绍了X射线光电子能谱,振动总和频率产生谱和分子动力学模拟。最后,针对氧化物和硅酸盐矿物,我们回顾并总结了液/矿界面上三种最广泛使用的混合表面活性剂体系(阴离子-阳离子,阴离子-非离子和阳离子-非离子)的浮选和吸附,以便全面理解自组装进度。最后,本文对混合表面活性剂的可能发展作了简要的展望。为了全面了解自组装进展,我们回顾并总结了三种最广泛使用的混合表面活性剂系统(阴离子-阳离子,阴离子-非离子和阳离子-非离子)在液体/矿物界面上的浮选和吸附。最后,本文对混合表面活性剂的可能发展作了简要的展望。为了全面了解自组装进展,我们回顾并总结了三种最广泛使用的混合表面活性剂系统(阴离子-阳离子,阴离子-非离子和阳离子-非离子)在液体/矿物界面上的浮选和吸附。最后,本文对混合表面活性剂的可能发展作了简要的展望。

更新日期:2017-12-14
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