智能响应型Pickering乳液的制备及在物质分离中的应用进展

Progress on the preparation of intelligent responsive Pickering emulsions and their applications in matter separation

Pickering乳液是指由微纳米固体粒子代替传统表面活性剂作为乳化剂而稳定的乳液,具有较强的稳定性和超高油/水界面,能够为多相界面反应和物质传输提供高效稳定的场所。Pickering乳液的乳滴结构和性质与固体颗粒的尺寸形貌及表面性质密不可分,通过调控固体颗粒本身或表面的性质可以赋予Pickering乳液特定的响应性功能,拓宽其应用领域。本文对近年来不同响应型(磁性、CO_(2)、pH、光、温度等响应型)的Pickering乳液的主要研究成果进行了综述,重点介绍了Pickering乳液的稳定性原理、响应型Pickering乳液的制备方法和结构调控策略,以及近年来Pickering乳液在物质分离提取中的应用研究进展,最后对智能响应型Pickering乳液应用研究的发展趋势进行了展望。

Pickering emulsion refers to an emulsion that is stabilized by micro-nano solid particles instead of traditional surfactants as an emulsifier.It has strong stability and an ultra-high oil/water interface,which can provide an efficient and stable place for multi-phase interface reactions and mass transport.The structure of emulsion droplet and properties of Pickering emulsion depends on the size,morphology and surface properties of the solid particles.Pickering emulsions can be endowed with specific responsive functions via adjusting the properties of the solid particles or their surfaces,resulting in wide application fields.This paper reviewed the main research results of Pickering emulsions with different response types(magnetic,CO_(2),pH,light,temperature and other response types),focusing on the stability principle of Pickering emulsions,the preparation methods and structural regulation of response Pickering emulsions,and the recent application research progress of Pickering emulsion in matter separation.Finally,the development trend of the application research of Pickering emulsion was prospected.