Issue 9, 2024

Spraying-induced in situ growth of CaCO3 for the modification of membranes for oil/water separation

Abstract

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 Ca2+ and CO32− induced in situ growth of CaCO3 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.

Graphical abstract: Spraying-induced in situ growth of CaCO3 for the modification of membranes for oil/water separation

Supplementary files

Article information

Article type
Communication
Submitted
02 Jan 2024
Accepted
29 Jan 2024
First published
30 Jan 2024

New J. Chem., 2024,48, 3785-3788

Spraying-induced in situ growth of CaCO3 for the modification of membranes for oil/water separation

J. Cui, J. Rui, J. Meng, F. Wang, H. Feng, Z. Ge, A. Xie and J. Pan, New J. Chem., 2024, 48, 3785 DOI: 10.1039/D4NJ00008K

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