Spraying-induced in situ growth of CaCO 3 for the modification of membranes for oil/water separation

Here, a simple spraying-induced in situ growth of inorganic particles strategy was adopted to fabricate composite membranes. Sodium alginate was first sprayed on a polyvinylidene fluoride membrane to provide active sites, and subsequently, alternate spraying of Ca 2+ and CO 3 2− induced in situ grow...

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Published in:New journal of chemistry 2024-02, Vol.48 (9), p.3785-3788
Main Authors: Cui, Jiuyun, Rui, Jiangping, Meng, Jiawei, Wang, Fan, Feng, Huiqing, Ge, Zhijun, Xie, Atian, Pan, Jianming
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container_issue 9
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container_title New journal of chemistry
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creator Cui, Jiuyun
Rui, Jiangping
Meng, Jiawei
Wang, Fan
Feng, Huiqing
Ge, Zhijun
Xie, Atian
Pan, Jianming
description Here, a simple spraying-induced in situ growth of inorganic particles strategy was adopted to fabricate composite membranes. Sodium alginate was first sprayed on a polyvinylidene fluoride membrane to provide active sites, and subsequently, alternate spraying of Ca 2+ and CO 3 2− induced in situ growth of CaCO 3 particles to construct hierarchical structures. The optimal membrane exhibited superhydrophilicity/underwater superoleophobicity. The membrane has good oil–water separation efficiency (>99%) and high flux (>2238 L m −2 h −1 ) for several oil–water emulsions. Importantly, the membrane retained acceptable separation performance even after 10 cycles, proving its good mechanical stability and anti-fouling features. The current work may open up a new avenue for the large-scale fabrication of super-wetting membranes for oily wastewater remediation.
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title Spraying-induced in situ growth of CaCO 3 for the modification of membranes for oil/water separation
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