Selective Ionic Transport through Tunable Subnanometer Pores in Single-Layer Graphene Membranes
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 per...
| Main Authors: | , , , , , , , |
|---|---|
| Other Authors: | |
| Format: | Article |
| Language: | en_US |
| Published: |
American Chemical Society (ACS)
2015
|
| Online Access: | http://hdl.handle.net/1721.1/99472 https://orcid.org/0000-0003-0588-9286 https://orcid.org/0000-0002-5603-7991 https://orcid.org/0000-0003-0551-1208 https://orcid.org/0000-0001-6309-2318 |
| _version_ | 1826216258725478400 |
|---|---|
| author | O’Hern, Sean C. Idrobo, Juan-Carlos Song, Yi Kong, Jing Laoui, Tahar Atieh, Muataz Boutilier, Michael Stephen Hatcher Karnik, Rohit |
| author2 | Massachusetts Institute of Technology. Department of Electrical Engineering and Computer Science |
| author_facet | Massachusetts Institute of Technology. Department of Electrical Engineering and Computer Science O’Hern, Sean C. Idrobo, Juan-Carlos Song, Yi Kong, Jing Laoui, Tahar Atieh, Muataz Boutilier, Michael Stephen Hatcher Karnik, Rohit |
| author_sort | O’Hern, Sean C. |
| collection | MIT |
| description | 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[superscript 12] cm[superscript –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. |
| first_indexed | 2024-09-23T16:44:50Z |
| format | Article |
| id | mit-1721.1/99472 |
| institution | Massachusetts Institute of Technology |
| language | en_US |
| last_indexed | 2024-09-23T16:44:50Z |
| publishDate | 2015 |
| publisher | American Chemical Society (ACS) |
| record_format | dspace |
| spelling | mit-1721.1/994722022-10-03T07:59:19Z Selective Ionic Transport through Tunable Subnanometer Pores in Single-Layer Graphene Membranes O’Hern, Sean C. Idrobo, Juan-Carlos Song, Yi Kong, Jing Laoui, Tahar Atieh, Muataz Boutilier, Michael Stephen Hatcher Karnik, Rohit Massachusetts Institute of Technology. Department of Electrical Engineering and Computer Science Massachusetts Institute of Technology. Department of Mechanical Engineering O’Hern, Sean C. Boutilier, Michael Stephen Hatcher Song, Yi Kong, Jing Karnik, Rohit 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[superscript 12] cm[superscript –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. Center for Clean Water and Clean Energy at MIT and KFUPM (Project R10-CW-09) United States. Dept. of Energy. Office of Basic Energy Sciences (Award DE-SC0008059) United States. Dept. of Energy. Office of Basic Energy Sciences (Oak Ridge National Laboratory. Center for Nanophase Materials Sciences) 2015-10-27T15:30:53Z 2015-10-27T15:30:53Z 2014-02 2014-01 Article http://purl.org/eprint/type/JournalArticle 1530-6984 1530-6992 http://hdl.handle.net/1721.1/99472 O’Hern, Sean C., Michael S. H. Boutilier, Juan-Carlos Idrobo, Yi Song, Jing Kong, Tahar Laoui, Muataz Atieh, and Rohit Karnik. “Selective Ionic Transport through Tunable Subnanometer Pores in Single-Layer Graphene Membranes.” Nano Lett. 14, no. 3 (March 12, 2014): 1234–1241. https://orcid.org/0000-0003-0588-9286 https://orcid.org/0000-0002-5603-7991 https://orcid.org/0000-0003-0551-1208 https://orcid.org/0000-0001-6309-2318 en_US http://dx.doi.org/10.1021/nl404118f Nano Letters Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use. application/pdf American Chemical Society (ACS) Prof. Karnik via Angie Locknar |
| spellingShingle | O’Hern, Sean C. Idrobo, Juan-Carlos Song, Yi Kong, Jing Laoui, Tahar Atieh, Muataz Boutilier, Michael Stephen Hatcher Karnik, Rohit Selective Ionic Transport through Tunable Subnanometer Pores in Single-Layer Graphene Membranes |
| title | Selective Ionic Transport through Tunable Subnanometer Pores in Single-Layer Graphene Membranes |
| title_full | Selective Ionic Transport through Tunable Subnanometer Pores in Single-Layer Graphene Membranes |
| title_fullStr | Selective Ionic Transport through Tunable Subnanometer Pores in Single-Layer Graphene Membranes |
| title_full_unstemmed | Selective Ionic Transport through Tunable Subnanometer Pores in Single-Layer Graphene Membranes |
| title_short | Selective Ionic Transport through Tunable Subnanometer Pores in Single-Layer Graphene Membranes |
| title_sort | selective ionic transport through tunable subnanometer pores in single layer graphene membranes |
| url | http://hdl.handle.net/1721.1/99472 https://orcid.org/0000-0003-0588-9286 https://orcid.org/0000-0002-5603-7991 https://orcid.org/0000-0003-0551-1208 https://orcid.org/0000-0001-6309-2318 |
| work_keys_str_mv | AT ohernseanc selectiveionictransportthroughtunablesubnanometerporesinsinglelayergraphenemembranes AT idrobojuancarlos selectiveionictransportthroughtunablesubnanometerporesinsinglelayergraphenemembranes AT songyi selectiveionictransportthroughtunablesubnanometerporesinsinglelayergraphenemembranes AT kongjing selectiveionictransportthroughtunablesubnanometerporesinsinglelayergraphenemembranes AT laouitahar selectiveionictransportthroughtunablesubnanometerporesinsinglelayergraphenemembranes AT atiehmuataz selectiveionictransportthroughtunablesubnanometerporesinsinglelayergraphenemembranes AT boutiliermichaelstephenhatcher selectiveionictransportthroughtunablesubnanometerporesinsinglelayergraphenemembranes AT karnikrohit selectiveionictransportthroughtunablesubnanometerporesinsinglelayergraphenemembranes |