Flexible Underwater Oleophobic Cellulose Aerogels for Efficient Oil/Water Separation | Zendy

Bo Fu | Zendy; Qiqi Yang | Zendy; Fan Yang | Zendy

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Flexible Underwater Oleophobic Cellulose Aerogels for Efficient Oil/Water Separation

Author(s) -

Bo Fu,

Qiqi Yang,

Fan Yang

Publication year - 2020

Publication title -

acs omega

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.779

H-Index - 40

ISSN - 2470-1343

DOI - 10.1021/acsomega.0c00440

Subject(s) - materials science , aerogel , chemical engineering , underwater , porosity , cellulose , durability , oxide , graphene , membrane , permeation , composite material , nanotechnology , chemistry , oceanography , engineering , geology , biochemistry , metallurgy

Hybrid cellulose/ N , N '-methylene bisacrylamide/graphene oxide (GO) aerogels with high flexibility and underwater oleophobicity were fabricated via the NaOH/urea solvent system. The as-prepared aerogels demonstrated low density, high porosity, and good flexibility. Underwater oleophobicity is attributed to the abundant hydrophilic groups in the aerogel skeleton, rough surface, and homogeneous distribution of GO. The samples were shaped into the membrane and filtered for oil/water separation by gravity. The separation efficiency over membrane-shaped CG 1 was 99.8% with a permeate flux of 22,900 L/(m 2 ·h). Moreover, excellent reusability and durability were observed under long-term tests and corrosive conditions.

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