Hot-pressed polymer nanofiber supported graphene membrane for high-performance nanofiltration
| Autor: | Che Ning Yeh, Zhao Wang, Todd J. Menkhaus, Hao Fong, Jiaxing Huang, Rajesh Sahadevan |
|---|---|
| Rok vydání: | 2017 |
| Předmět: |
Materials science
Bioengineering 02 engineering and technology 010402 general chemistry Hot pressing 01 natural sciences law.invention chemistry.chemical_compound law General Materials Science Electrical and Electronic Engineering Composite material chemistry.chemical_classification Graphene Mechanical Engineering Polyacrylonitrile General Chemistry Polymer 021001 nanoscience & nanotechnology Electrospinning 0104 chemical sciences Membrane chemistry Chemical engineering Mechanics of Materials Nanofiber Nanofiltration 0210 nano-technology |
| Zdroj: | Nanotechnology. 28:31LT02 |
| ISSN: | 1361-6528 0957-4484 |
| DOI: | 10.1088/1361-6528/aa7ba9 |
| Popis: | Graphene oxide (GO) sheets can be readily surface-overlaid on hot-pressed electrospun polyacrylonitrile (PAN) nanofiber membrane to form a continuous and crack-free layer; upon thermal reduction at 150 °C for 12 h, the resulting reduced GO (rGO) layer can reject ~90% MgSO4 with high water flux (due to the size exclusion mechanism), making the prepared PAN-rGO membranes promising nanofiltration media for water purification. It is important to note that no delamination of GO/rGO sheet layers has been observed throughout this study. We highlight that a simple processing method (i.e., hot pressing) is critical for the successful preparation of 2D materials (e.g., GO/rGO) based membranes/media. It is envisioned that the reported study can benefit many groups working on various membrane applications of 2D materials; in other words, the hot-pressed electrospun nanofiber membranes could be generally utilized as an innovative type of platform to support various 2D sheets for different separation applications such as highly efficient and cost-effective removal of dissolved components (e.g., organic molecules) and even (hydrated) ions from water. |
| Databáze: | OpenAIRE |
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