Facilitated Water Transport through Graphene Oxide Membranes Functionalized with Aquaporin-Mimicking Peptides
- Title
- Facilitated Water Transport through Graphene Oxide Membranes Functionalized with Aquaporin-Mimicking Peptides
- Author
- 이윤정
- Keywords
- biomimetic; graphene oxide; membranes; recognition; selectivity
- Issue Date
- 2018-02
- Publisher
- WILEY-V C H VERLAG GMBH
- Citation
- ADVANCED MATERIALS, v. 30, no. 14, Article no. 1705944
- Abstract
- Water purification by membranes is widely investigated to address concerns related to the scarcity of clean water. Achieving high flux and rejection simultaneously is a difficult challenge using such membranes because these properties are mutually exclusive in common artificial membranes. Nature has developed a method for this task involving water-channel membrane proteins known as aquaporins. Here, the design and fabrication of graphene oxide (GO)-based membranes with a surface-tethered peptide motif designed to mimic the water-selective filter of natural aquaporins is reported. The short RF8 (RFRFRFRF, where R and F represent arginine and phenylalanine, respectively) octapeptide is a concentrated form of the core component of the Ar/R (aromatic/arginine) water-selective filter in aquaporin. The resulting GO-RF8 shows superior flux and high rejection similar to natural aquaporins. Molecular dynamics simulation reveal the unique configuration of RF8 peptides and the transport of water in GO-RF8 membranes, supporting that RF8 effectively emulates the core function of aquaporins.
- URI
- https://onlinelibrary.wiley.com/doi/abs/10.1002/adma.201705944https://repository.hanyang.ac.kr/handle/20.500.11754/117378
- ISSN
- 0935-9648; 1521-4095
- DOI
- 10.1002/adma.201705944
- Appears in Collections:
- COLLEGE OF ENGINEERING[S](공과대학) > ENERGY ENGINEERING(에너지공학과) > Articles
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