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Selective Ionic Transport through Tunable Subnanometer Pores in Single-Layer Graphene Membranes
Open accessAbstract
We report selective ionic transport through controlled, high-density, subnanometer diameter pores in macroscopic single-layer graphene membranes. Isolated, reactive defects were first introduced into the graphene lattice through ion bombardment and subsequently enlarged by oxidative etching into permeable pores with diameters of 0.40 ± 0.24 nm and densities exceeding 10(12) cm(-2), while retaining structural integrity of the graphene. Transport measurements across ion-irradiated graphene membranes subjected to in situ etching revealed that the created pores were cation-selective at short oxidation times, consistent with electrostatic repulsion from negatively charged functional groups terminating the pore edges. At longer oxidation times, the pores allowed transport of salt but prevented the transport of a larger organic molecule, indicative of steric size exclusion. The ability to tune the selectivity of graphene through controlled generation of subnanometer pores addresses a significant challenge in the development of advanced nanoporous graphene membranes for nanofiltration, desalination, gas separation, and other applications.
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Cited by
Tunable sieving of ions using graphene oxide membranes
Abraham, J., Vasu, K. S., Williams, C. D., Gopinadhan, K., Su, Y., Cherian, C. T., Dix, J., Prestat, E., Haigh, S. J., Grigorieva, I. V., et al. (2017) · Nature Nanotechnology · doi:10.1038/nnano.2017.21 · Cited by 1,875
Environmental applications of graphene-based nanomaterials
Perreault, F., Fonseca de Faria, A., & Elimelech, M. (2015) · Chemical Society Reviews · doi:10.1039/c5cs00021a · Cited by 1,528
Emerging desalination technologies for water treatment: A critical review
Subramani, A., & Jacangelo, J. G. (2015) · Water Research · doi:10.1016/j.watres.2015.02.032 · Cited by 959
Sodium Metal Anodes: Emerging Solutions to Dendrite Growth
Lee, B., Paek, E., Mitlin, D., & Lee, S. W. (2019) · Chemical Reviews · doi:10.1021/acs.chemrev.8b00642 · Cited by 940
Sun, P., Wang, K., & Zhu, H. (2016) · Advanced Materials · doi:10.1002/adma.201502595 · Cited by 668
Metadata
- Authors
- O’Hern, S. C., Boutilier, M. S. H., Idrobo, J.-C., Song, Y., Kong, J., Laoui, T., Atieh, M., & Karnik, R.
- Venue
- Nano Letters
- Publisher
- American Chemical Society (ACS)
- Published
- 2014-02-13
- Volume
- 14
- Issue
- 3
- Pages
- 1234-1241
- ISSN
- 1530-6984 (ISSN-L)
- 1530-6992
- OpenAlex
- W2022336433
- Cited by
- 820
- References
- 0
- FWCI
- 39.56
- Type
- journal article
- Language
- en
- Open access
- green
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- O’Hern, S. C., Boutilier, M. S. H., Idrobo, J.-C., Song, Y., Kong, J., Laoui, T., Atieh, M., & Karnik, R. (2014). Selective Ionic Transport through Tunable Subnanometer Pores in Single-Layer Graphene Membranes. Nano Letters. https://doi.org/10.1021/nl404118f
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