Fabrication of stainless steel mesh supported zeolite Al-beta coatings for oil/water separation

被引：0
|
作者：
Shang X. [1 ]
Zhang B. [1 ]
Li Y. [1 ]
机构：
[1] State Key Laboratory of Chemical Engineering, School of Chemical Engineering and Technology, Tianjin University, Tianjin
来源：
Huagong Xuebao/CIESC Journal | 2019年 / 70卷 / 10期
关键词：
Film; Oil/water separation; Stability; Stainless steel mesh; Superhydrophilic; Surface; Underwater superhydrophobic; Zeolite Al-beta;
D O I：
10.11949/0438-1157.20190355
中图分类号：
学科分类号：
摘要：
The zeolite Al-beta coating was fabricated on the stainless steel mesh by secondary growth method. Scanning electron microscopy (SEM), X-ray diffraction (XRD) and contact angle (CA) measurements were used to characterize the zeolite Al-beta coatings. The cross-linked zeolite Al-beta crystals with spherical morphology on the stainless steel mesh constituted a micro/nanoscale hierarchical structure. The as-synthesized stainless steel mesh supported zeolite Al-beta coatings exhibited superhydrophilic and underwater superoleophobic characteristics. The stainless steel mesh supported zeolite Al-beta coating was applied to the separation of various oil/water mixtures. It could maintain the high separation efficiency above 97.1% after 100 separation cycles. The stability of zeolite Al-beta coatings was checked by using corrosive and ultrasonic treatments. The treated stainless steel mesh supported zeolite Al-beta coatings exhibited almost the same surface morphologies and separation efficiencies as the untreated sample. In addition, the zeolite Al-beta coating displayed a strong attachment to the stainless steel mesh surface. Self-cleaning stainless steel mesh supported zeolite Al-beta coatings with superior durability and stability would show great application potentials in actual oil/water separation processes. © All Right Reserved.
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页码：3994 / 4001
页数：7
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