Xie Junbao, Liang Anqi, Lin Qin, Chen Nantian, Ahmed Abbas, Li Xiaoyan, Jian Rongkun, Sun Luyi, Ding Fuchuan
Fujian Key Laboratory of Polymer Science, College of Chemistry and Materials Science, Fujian Normal University, Fuzhou 350007, China.
Polymer Program, Institute of Materials Science and Department of Chemical & Biomolecular Engineering, University of Connecticut, Storrs, CT 06269, USA.
Molecules. 2025 Apr 21;30(8):1857. doi: 10.3390/molecules30081857.
A superhydrophilic silica coating was prepared using a sequential dipping process involving acid-catalyzed silica, base-catalyzed silica, and 3-(trihydroxysilyl)propanesulfonic acid. Acid-catalyzed and base-catalyzed silica particles with varying diameters were synthesized by hydrolyzing tetraethyl orthosilicate using HCl and NH·HO as catalysts, respectively. 3-(Trihydroxysilyl)propanesulfonic acid was obtained by oxidizing mercaptopropyl trimethoxysilane with hydrogen peroxide under acidic conditions. The resulting silica coating exhibited exceptional superhydrophilicity, with a water static contact angle of 5.0°, and demonstrated underwater superoleophobicity, with a hexadecane underwater contact angle exceeding 140°. Surfaces coated with the superhydrophilic silica coatings showed excellent performances in oil-water separation, anti-protein adsorption, and anti-fogging applications.
采用一种连续浸渍工艺制备了一种超亲水性二氧化硅涂层，该工艺涉及酸催化二氧化硅、碱催化二氧化硅和3-(三羟基甲硅烷基)丙烷磺酸。分别以HCl和NH₃·H₂O为催化剂，通过水解正硅酸四乙酯合成了不同直径的酸催化和碱催化二氧化硅颗粒。在酸性条件下用过氧化氢氧化巯基丙基三甲氧基硅烷得到3-(三羟基甲硅烷基)丙烷磺酸。所得二氧化硅涂层表现出优异的超亲水性，水静态接触角为5.0°，并表现出水下超疏油性，十六烷水下接触角超过140°。涂有超亲水性二氧化硅涂层的表面在油水分离、抗蛋白质吸附和防雾应用中表现出优异的性能。
