用于油水分离的超疏水海绵制备创新实验

Innovative Experiment of Preparation of Superhydrophobic Magnetic Sponge Applied for Oil-water Separation

基于四川大学"化学与绿色化工"双一流学科建设需求,将可用于油水分离的超疏水海绵制备设计成本科生创新教学实验。该实验用胶水负载超疏水Fe3O4纳米颗粒的方法,在海绵表面构筑稳定的微纳米结构及引入低表面能物质,制备具有超疏水和超亲油特性的海绵。通过接触角和油污吸附量表征超疏水海绵的油水分离性能。通过探究式-小班化讨论,研究不同实验条件对海绵超疏水特性的影响。该实验设计能培养学生的创新意识和化工新产品、新工艺开发的能力,提高了学生的设计和动手能力,以及团队协作能力,实现了创新性实验的教学目的。

In response to the requirements of the "double first-class" discipline construction of "chemistry and green chemical engineering" of Sichuan University, the preparation of superhydrophobic polyurethane sponge that can be applied in oil-water separation is incorporated in innovation experimental teaching for undergraduate students. In this experiment, to prepare the sponge with superhydrophobic and superlipophilic properties, the superhydrophobic Fe3 O4 nanoparticles are loaded by glue to construct stable micro-nanostructures and introduce low surface energy materials on the sponge surface. The oil-water separation performance of the superhydrophobic sponge was characterized by the contact angle and the adsorption capacity of oil. The effects of different experimental conditions on the superhydrophobic properties of the sponges are discussed by small exploration class. This innovative experiment improves the students’ creativeness and their ability to develop the new chemical products and technologies as well as their overall design and hands-on skills, and achieves the objective of innovative experiment teaching.