Journal
SEPARATION AND PURIFICATION TECHNOLOGY
Volume 247, Issue -, Pages -Publisher
ELSEVIER
DOI: 10.1016/j.seppur.2020.116945
Keywords
Reduced graphene oxide; Polydopamine; Titanium carbide(MXene); Dye retention; Oil-water separation
Categories
Funding
- State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation (Southwest Petroleum University) [PLN201617]
Ask authors/readers for more resources
Titanium carbide (MXene) sheet membranes have become attractive candidates in terms of solvent nanofiltrafion performance. Whereas, the low contaminant removal ability limited the practical application of MXene membranes in efficient separation. Here, the reduced graphene oxide (RGO)/polydopamine (PDA)/titanium carbide (MXene) composites were prepared by dopamine modification method. Then, the RGO/PDA/MXene composites were suction filtrated on a nylon membrane to construct the two-dimensional-two-dimensional (2D2D) laminated composite membrane. The effects of MXene content on the surface hydrophilicity, dye retention and oil-water separation properties of the modified membrane were systematically studied. Among them, the RPM-8 membrane exhibited ultra-high separation effect (> 96%) and excellent throughput (> 200 L/m(2).h) for Methylene Blue (MB), Methyl Orange (MO), Methyl Red (MR), Congo Red (CO) and Evans Blue (EB). At the same time, the modified membrane shows very high oil-water separation effect on the emulsion (> 97%). In addition, long-term cycle experiments have also revealed the stability of RGO/PDA/MXene composite membranes. The above results further illustrated the importance of the regular straight rigid channels of the composite membrane in separation performance. Therefore, RGO/PDA/MXene composite membrane has tremendous potential in practical applications.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available