Superwetting Polypropylene Nonwoven Fabrics Modified by a Catechol-Based Biomimetic Strategy for Oil/Water Separation
Source abstract
Abstract
The superwetting membrane with superhydrophilic/underwater superoleophobic properties is one of the ideal materials for treating oily wastewater. We combined a catechol/silane biomimetic composite coating system and a metal-phenolic network structure to co-deposit a dopamine-like superhydrophilic coating on polypropylene nonwoven fabrics. The modified fabric separated oil–water mixtures with a filtration efficiency of up to 99%. Besides, the as-prepared material has the property of nonstick oil underwater and outstanding stability. After 30 cycles of separation tests, the pure water flux can be restored to 94.5% of the initial value after rinsing with deionized water. It maintained underwater superoleophobic properties after being immersed in a harsh environment of pH 1 or 13 for 1 h. Compared with dopamine hydrophilic modification, this method was more economical and time-consuming and could fabricate a full-scale separation material.
Source: openalex_inverted_index · Quality: baseline
Research context
OpenAlex topics: Surface Modification and Superhydrophobicity · Advanced Sensor and Energy Harvesting Materials · Membrane Separation Technologies
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
College of Textiles Science and Engineering, Zhejiang Sci-Tech University, Hangzhou 310018, China
School of Electrical and Mechanical Engineering, Xinjiang Institute of Engineering, Urumqi 830023, China
Zhejiang Provincial Innovation Center of Advanced Textile Technology, Shaoxing 312000, China
Funding
Science and Technology Department of Zhejiang Province · Natural Science Foundation of Zhejiang Province · National Innovation Center of Advanced Dyeing and Finishing Technology
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