The combination of 2d layered graphene oxide and 3d porous cellulose heterogeneous membranes for nanofluidic osmotic power generation
Artikel i vetenskaplig tidskrift, 2021

Salinity gradient energy, as a type of blue energy, is a promising sustainable energy source. Its energy conversion efficiency is significantly determined by the selective membranes. Recently, nanofluidic membrane made by two-dimensional (2D) nanomaterials (e.g., graphene) with densely packed nanochannels has been considered as a high-efficient membrane in the osmotic power generation research field. Herein, the graphene oxide-cellulose acetate (GO–CA) heterogeneous membrane was assembled by combining a porous CA membrane and a layered GO membrane; the combination of 2D nanochannels and 3D porous structures make it show high surface-charge-governed property and excellent ion transport stability, resulting in an efficient osmotic power harvesting. A power density of about 0.13 W/m2 is achieved for the sea–river mimicking system and up to 0.55 W/m2 at a 500-fold salinity gradient. With different functions, the CA and GO membranes served as ion storage layer and ion selection layer, respectively. The GO–CA heterogeneous membrane open a promising avenue for fabrication of porous and layered platform for wide potential applications, such as sustainable power generation, water purification, and seawater desalination.

Graphene oxide

Energy generation

Reversed electrodialysis

Osmotic power

2D nanofluidics

Ion transport


Pan Jia

Hebei Normal University

Xinyi Du

Hebei Normal University

Ruiqi Chen

Student vid Chalmers

Jinming Zhou

Hebei Normal University

Marco Agostini

Chalmers, Fysik, Materialfysik

Jinhua Sun

Chalmers, Industri- och materialvetenskap, Material och tillverkning

Linhong Xiao

Uppsala universitet


1420-3049 (ISSN) 14203049 (eISSN)

Vol. 26 17 5343

Janus-like, Asymmetric graphene Nanosheets for Ultrafiltration and Sieving.

Vetenskapsrådet (VR) (2017-04456), 2018-01-01 -- 2021-12-31.

Graphene Core Project 3 (Graphene Flagship)

Europeiska kommissionen (EU) (EC/H2020/881603), 2020-04-01 -- 2023-03-31.


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