Tunable Graphene Oxide Nanofiltration Membrane for Effective Dye/Salt Separation and Desalination
Article
Xing, Chao, Han, Jing, Pei, Xin, Zhang, Yuting, He, Jing, Huang, Rong, Li, Suhong, Liu, Changyu, Lai, Chao, Shen, Lingdi, Nanjundan, Ashok Kumar and Zhang, Shanqing. 2021. "Tunable Graphene Oxide Nanofiltration Membrane for Effective Dye/Salt Separation and Desalination." ACS Applied Materials and Interfaces. 13 (46), pp. 55339-55348. https://doi.org/10.1021/acsami.1c16141
| Article Title | Tunable Graphene Oxide Nanofiltration Membrane for Effective Dye/Salt Separation and Desalination |
|---|---|
| ERA Journal ID | 40638 |
| Article Category | Article |
| Authors | Xing, Chao, Han, Jing, Pei, Xin, Zhang, Yuting, He, Jing, Huang, Rong, Li, Suhong, Liu, Changyu, Lai, Chao, Shen, Lingdi, Nanjundan, Ashok Kumar and Zhang, Shanqing |
| Journal Title | ACS Applied Materials and Interfaces |
| Journal Citation | 13 (46), pp. 55339-55348 |
| Number of Pages | 10 |
| Year | 2021 |
| Publisher | American Chemical Society |
| Place of Publication | United States |
| ISSN | 1944-8244 |
| 1944-8252 | |
| Digital Object Identifier (DOI) | https://doi.org/10.1021/acsami.1c16141 |
| Web Address (URL) | https://pubs.acs.org/doi/10.1021/acsami.1c16141 |
| Abstract | Effective dye separation and desalination are critical for the treatment of highly saline textile wastewater with dye mixtures. In this study, a graphene oxide (GO) membrane with a tunable interlayer distance (d) was fabricated to generate clean water via two-stage filtration, namely, the dye/salt separation and desalination stages. In the first stage, under low pressure (e.g., 0.3 MPa), the membrane with a d value of ca. 7.60 Å was suitable for removing the dye from the saline wastewater. The dye and salt (i.e., Na2SO4) rejection rates of >99% and <6.5% were achieved, respectively, indicating the significant potential to recycle the dyes from the highly saline dye wastewater. In the second stage, under a higher pressure (e.g., 0.8 MPa), the d value was reduced to ca. 7.15 Å, bestowing the membrane with a desalination function. The desalination rate of a single filtration process could reach up to 51.8% from 1.0 g/L saline (i.e., Na2SO4) water. The as-prepared membrane also exhibited excellent practical advantages, including ultrahigh permeability, significant antifouling (against dye) performance, and excellent stability. Furthermore, with the stacking of multistage filtration systems, the proposed membrane technology will be capable of regenerating dye and producing clean water. |
| Keywords | desalination; dye separation; graphene oxide; membrane; interlayer distance |
| ANZSRC Field of Research 2020 | 4018. Nanotechnology |
| Public Notes | Files associated with this item cannot be displayed due to copyright restrictions. |
| Byline Affiliations | Jiangsu Normal University, China |
| Griffith University | |
| Wuyi University, China | |
| University of Queensland |
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