Ultrafast Nanofiltration through Large-Area Single-layered Graphene Membranes

Citation:

Qin, Y. ; Hu, Y. ; Koehler, S. A. ; Cai, L. ; Wen, J. ; Tan, X. ; Xu, W. L. ; Sheng, Q. ; Hou, X. ; Xue, J. ; et al. Ultrafast Nanofiltration through Large-Area Single-layered Graphene Membranes. ACS Applied Materials & Interfaces 2017, 9 9239–9244. Copy at http://www.tinyurl.com/y3dsyvef
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Abstract:

Perforated single-layered graphene has demonstrated selectivity and flux that is orders of magnitude greater than state-of-the-art polymer membranes. However, only individual graphene sheets with sizes up to tens of micrometers have been successfully fabricated for pressurized permeation studies. Scaling-up and reinforcement of these atomic membranes with minimum cracks and pinholes remains a major hurdle for practical applications. We develop a large-area in situ, phase-inversion casting technique to create 63 cm2 high-quality single-layered perforated graphene membranes for ultrafast nanofiltration that can operate at pressures up to 50 bar. This result demonstrates the feasibility of our technique for creating robust large-area, high quality, single-layered graphene and its potential use as a pressurized nanofiltration membrane.

Publisher's Version

Last updated on 11/09/2020