Preparation and properties of superhydrophobic-highly oleophobic SiC membrane

被引：0

作者：

Li, Li ^{[1
]}

Cai, Xinyu ^{[1
]}

Chen, Yinjie ^{[1
]}

Zhang, Wenqi ^{[1
]}

Li, Guanghui ^{[2
]}

Rao, Pinhua ^{[1
]}

机构：

[1] School of Chemistry and Chemical Engineering, Shanghai University of Engineering Science, Shanghai

[2] Innovation Center for Environment and Resources, Shanghai University of Engineering Science, Shanghai

来源：

Huagong Jinzhan/Chemical Industry and Engineering Progress | 2024年 / 43卷 / 08期

关键词：

self-cleaning; SiC membrane; spraying; superhydrophobic-highly oleophobic; surface modification;

D O I：

10.16085/j.issn.1000-6613.2023-1195

中图分类号：

学科分类号：

摘要：

A process was developed to prepare a superhydrophobic-highly oleophobic surface on SiC membrane based on SiO2 particle blending spraying and immersion method. By spraying SiO2 particles of different sizes, a micro-nano dual rough structure with amphiphobic capability was created on the surface of the SiC membrane. Then, perfluorodecyltrimethoxysilane was grafted onto the SiC membrane surface through immersion, successfully achieving a SiC membrane with superhydrophobic-highly oleophobic characteristics and excellent self-cleaning performance. The effects of different parameters, such as fluorine content and surface roughness, on surface wettability were analyzed. The modified superhydrophobic-highly oleophobic SiC membrane exhibited the static water contact angle of 152.6°and the static contact angle of n-hexadecane of 146.3°. The sliding angles were measured to be 5.2°and 10.2°, respectively. These properties could be attributed to the micro-nano structure on the SiC membrane surface and the low surface energy material, which reduced the adhesion between the surface and other substances. The superhydrophobic-highly oleophobic SiC membrane also exhibited stable amphiphobicity in strong acid and alkali solutions. This research provided a simple process for constructing superhydrophobic-highly oleophobic surfaces with excellent acid-base resistance on inorganic membranes. © 2024 Chemical Industry Press Co., Ltd.. All rights reserved.

引用

页码：4516 / 4522

页数：6

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