Continuous ZIF-8/reduced graphene oxide nanocoating for ultrafast oil/water separation

Dae Woo Kim; Kiwon Eum; Hanim Kim; Daeok Kim; Matheus Dorneles de Mello; Kangho Park; Michael Tsapatsis

doi:10.1016/j.cej.2019.04.179

Continuous ZIF-8/reduced graphene oxide nanocoating for ultrafast oil/water separation

Dae Woo Kim, Kiwon Eum, Hanim Kim, Daeok Kim, Matheus Dorneles de Mello, Kangho Park, Michael Tsapatsis

Department of Chemical and Biomolecular Engineering

Research output: Contribution to journal › Article › peer-review

59 Citations (Scopus)

Abstract

Continuous ZIF-8/reduced graphene oxide (RGO)nanocoating is fabricated by growing ZIF-8 on RGO-coated polyurethane (PU)foam. Surface modification of PU foam can be easily achieved by immersing the PU foam in GO solution, followed by mild thermal treatment to turn the GO layer into RGO layer. Adhesion between polymer foam and ZIF-8 layer was enhanced by the inserted RGO layer because oxygen-containing groups of RGO could interact with Zn²⁺ precursor of ZIF-8 localizing the layer growth preferentially on the surface of RGO. The synergetic hydrophobic/oleophilic properties of RGO and ZIF-8 enable selective oil absorption of PU foam with an absorption capacity of 15–35 g/g depending on the viscosity of organic solvents. Most of all, the ZIF-8/RGO coated PU foam can filter organic solvent selectively via vacuum filtration, showing ultrafast hexane flux up to 800,000 Lm⁻² h⁻¹ and no water flux.

Original language	English
Pages (from-to)	509-515
Number of pages	7
Journal	Chemical Engineering Journal
Volume	372
DOIs	https://doi.org/10.1016/j.cej.2019.04.179
Publication status	Published - 2019 Sept 15

Bibliographical note

Funding Information:
This work was supported by Basic Science Research Program through the National Research Foundation of Korea (NRF) funded by the Ministry of Education ( 2015R1A6A3A04057367 ). The authors declare no conflict of interest to this work.

Publisher Copyright:
© 2019 Elsevier B.V.

All Science Journal Classification (ASJC) codes

Chemistry(all)
Environmental Chemistry
Chemical Engineering(all)
Industrial and Manufacturing Engineering

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10.1016/j.cej.2019.04.179

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title = "Continuous ZIF-8/reduced graphene oxide nanocoating for ultrafast oil/water separation",

abstract = "Continuous ZIF-8/reduced graphene oxide (RGO)nanocoating is fabricated by growing ZIF-8 on RGO-coated polyurethane (PU)foam. Surface modification of PU foam can be easily achieved by immersing the PU foam in GO solution, followed by mild thermal treatment to turn the GO layer into RGO layer. Adhesion between polymer foam and ZIF-8 layer was enhanced by the inserted RGO layer because oxygen-containing groups of RGO could interact with Zn2+ precursor of ZIF-8 localizing the layer growth preferentially on the surface of RGO. The synergetic hydrophobic/oleophilic properties of RGO and ZIF-8 enable selective oil absorption of PU foam with an absorption capacity of 15–35 g/g depending on the viscosity of organic solvents. Most of all, the ZIF-8/RGO coated PU foam can filter organic solvent selectively via vacuum filtration, showing ultrafast hexane flux up to 800,000 Lm−2 h−1 and no water flux.",

author = "Kim, {Dae Woo} and Kiwon Eum and Hanim Kim and Daeok Kim and Mello, {Matheus Dorneles de} and Kangho Park and Michael Tsapatsis",

note = "Funding Information: This work was supported by Basic Science Research Program through the National Research Foundation of Korea (NRF) funded by the Ministry of Education ( 2015R1A6A3A04057367 ). The authors declare no conflict of interest to this work. Publisher Copyright: {\textcopyright} 2019 Elsevier B.V.",

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doi = "10.1016/j.cej.2019.04.179",

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AU - Mello, Matheus Dorneles de

AU - Park, Kangho

AU - Tsapatsis, Michael

N1 - Funding Information: This work was supported by Basic Science Research Program through the National Research Foundation of Korea (NRF) funded by the Ministry of Education ( 2015R1A6A3A04057367 ). The authors declare no conflict of interest to this work. Publisher Copyright: © 2019 Elsevier B.V.

PY - 2019/9/15

Y1 - 2019/9/15

N2 - Continuous ZIF-8/reduced graphene oxide (RGO)nanocoating is fabricated by growing ZIF-8 on RGO-coated polyurethane (PU)foam. Surface modification of PU foam can be easily achieved by immersing the PU foam in GO solution, followed by mild thermal treatment to turn the GO layer into RGO layer. Adhesion between polymer foam and ZIF-8 layer was enhanced by the inserted RGO layer because oxygen-containing groups of RGO could interact with Zn2+ precursor of ZIF-8 localizing the layer growth preferentially on the surface of RGO. The synergetic hydrophobic/oleophilic properties of RGO and ZIF-8 enable selective oil absorption of PU foam with an absorption capacity of 15–35 g/g depending on the viscosity of organic solvents. Most of all, the ZIF-8/RGO coated PU foam can filter organic solvent selectively via vacuum filtration, showing ultrafast hexane flux up to 800,000 Lm−2 h−1 and no water flux.

AB - Continuous ZIF-8/reduced graphene oxide (RGO)nanocoating is fabricated by growing ZIF-8 on RGO-coated polyurethane (PU)foam. Surface modification of PU foam can be easily achieved by immersing the PU foam in GO solution, followed by mild thermal treatment to turn the GO layer into RGO layer. Adhesion between polymer foam and ZIF-8 layer was enhanced by the inserted RGO layer because oxygen-containing groups of RGO could interact with Zn2+ precursor of ZIF-8 localizing the layer growth preferentially on the surface of RGO. The synergetic hydrophobic/oleophilic properties of RGO and ZIF-8 enable selective oil absorption of PU foam with an absorption capacity of 15–35 g/g depending on the viscosity of organic solvents. Most of all, the ZIF-8/RGO coated PU foam can filter organic solvent selectively via vacuum filtration, showing ultrafast hexane flux up to 800,000 Lm−2 h−1 and no water flux.

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Continuous ZIF-8/reduced graphene oxide nanocoating for ultrafast oil/water separation

Abstract

Bibliographical note

All Science Journal Classification (ASJC) codes

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