Ultrasmall Cu3(PO4)2 Nanoparticles Reinforced Hydrogel Membrane for Super-antifouling Oil/ Water Emulsion Separation
Mo, YY1,2,3,4, Zhang, F 1,2,3,4*（张丰）, Dong, HF5, Zhang, XZ1,2,3,4, Gao, SJ6 , Zhang, SX 1,2,3,4, Jin, J1,2* (靳健)
1 Soochow Univ, Coll Chem, Chem Engn & Mat Sci, Suzhou 215123, Peoples R China
2 Soochow Univ, Collaborat Innovat Ctr, Suzhou Nano Sci & Technol, Suzhou 215123, Peoples R China
3 Soochow Univ, Suzhou Key Lab Macromol Design & Precis Synth, Suzhou 215123, Peoples R China
4 Soochow Univ, Jiangsu Key Lab Adv Negat Carbon Technol, Suzhou 215123, Peoples R China
5 China State Shipbuilding Corp Syst Engn Res Inst, Beijing 100036, Peoples R China
6 Suzhou Inst Nanotech & Nanob, Chinese Acad Sci, i Lab, Suzhou 215123, Peoples R China
ACS Nano 2022, 16, 12, 20786--20795
Membrane fouling is a persistent and crippling challenge for oily wastewater treatment due to the high susceptibility of membranes to contamination. A feasible strategy is to design a robust and stable hydration layer on the membrane surface to prevent contaminates. A hydrogel illustrates a distinct category of materials with outstanding antifouling performance but is limited by its weak
mechanical property. In this research, we report a reinforced hydrogel on a membrane by in situ growing ultrasmall hydrophilic Cu3(PO4)2 nanoparticles in a copper alginate (CuAlg) layer via metal-ion-coordination-mediated mineralization. The embeddedness of hydrophilic CCu3(PO4)2 nanoparticle with a size of 3−5 nm endows the CuAlg/Cu3(PO4)2 composite hydrogel with enhanced mechanical property as well as reinforced hydrate ability. The as-prepared CuAlg/CuAlg/Cu3(PO4)2 modified membrane exhibits a superior oil-repulsive property and achieves a nearly zero flux decline for separating surfactant stabilized oil-in-water emulsions with a high permeate flux up to ∼1330 L m−2 h−1 bar−1. Notably, it is capable of keeping similar permeate flux for both pure water and oil-in-water emulsions during filtration, which is superior to the currently reported membranes, indicating its super-antifouling properties.
链接：//pubs.acs.org/doi/full/10.1021/acsnano.2c07977
