One-step fabrication of transparent Barite colloid with dual superhydrophilicity for anti-crude oil fouling and anti-fogging

Wanshun Deng; Gang Wang; Lei Tang; Zhixiang Zeng; Tianhui Ren

doi:10.1016/j.jcis.2021.09.178

One-step fabrication of transparent Barite colloid with dual superhydrophilicity for anti-crude oil fouling and anti-fogging

J Colloid Interface Sci. 2022 Feb 15;608(Pt 1):186-192. doi: 10.1016/j.jcis.2021.09.178. Epub 2021 Sep 29.

Authors

Wanshun Deng¹, Gang Wang², Lei Tang², Zhixiang Zeng³, Tianhui Ren⁴

Affiliations

¹ School of Chemistry and Chemical Engineering, Frontiers Science Center for Transformative Molecules, Key Laboratory of Thin Film and Microfabrication Technology, Shanghai Jiao Tong University, Shanghai 200240, PR China; Key Laboratory of Marine Materials and Related Technologies, Zhejiang Key Laboratory of Marine Materials and Protective Technologies, Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, Ningbo 315201, PR China.
² Key Laboratory of Marine Materials and Related Technologies, Zhejiang Key Laboratory of Marine Materials and Protective Technologies, Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, Ningbo 315201, PR China.
³ Key Laboratory of Marine Materials and Related Technologies, Zhejiang Key Laboratory of Marine Materials and Protective Technologies, Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, Ningbo 315201, PR China. Electronic address: zengzhx@nimte.ac.cn.
⁴ School of Chemistry and Chemical Engineering, Frontiers Science Center for Transformative Molecules, Key Laboratory of Thin Film and Microfabrication Technology, Shanghai Jiao Tong University, Shanghai 200240, PR China. Electronic address: thren@sjtu.edu.cn.

PMID: 34626965
DOI: 10.1016/j.jcis.2021.09.178

Abstract

Hypothesis: Transparent superhydrophilic coatings are very promising in various scenarios. Appropriate fabrication of colloid coatings with superhydrophilicity both in air and under oil would enlarge their application potential in anti-oil fouling and facilitate anti-fogging of transparent surfaces.

Experiments: The Barite colloid was obtained from a one-step precipitation method and was transferred onto glasses to prepare transparent coatings with different thicknesses simply by dip-coating. Then, the impact of thickness on wettability and property was studied through the investigation of wettability in various phase, anti-crude oil fouling performance and anti-fogging ability.

Findings: Similar surface morphology and roughness of these coatings were achieved and all the coated surfaces showed ultra-hydrophilicity both in air and under oil. Moreover, the hydrophilicity in air and under oil was found to deteriorate with the decrease of coatings' thickness and dual superhydrophilicity could be achieved on thick coatings. More importantly, excellent anti-crude oil fouling property and durable anti-fogging ability were realized on these transparent coatings with dual superhydrophilicity.

Keywords: Anti-crude oil; Anti-fogging; Barite colloid; Dual superhydrophilicity.