Synthesis and characterization of graphene oxide and reduced graphene oxide membranes for water purification applications
- Title
- Synthesis and characterization of graphene oxide and reduced graphene oxide membranes for water purification applications
- Creator
- Jose J.K.; Mishra B.; Cherian C.T.; Tripathi B.P.; Balachandran M.
- Description
- Graphene oxide and reduced graphene oxide-based laminar membranes have been receiving increased attention for its novel filtration applications. In the present work, graphene oxide (GO) solution is synthesized by modified Hummers method and coated on cellulose nitrate by vacuum filtration technique. Further, reduced graphene oxide (rGO) membranes are fabricated by the controlled reduction of GO membrane using vitamin C solution at 60 C. The formation of GO and rGO is confirmed from Raman, FTIR, and UVVis spectroscopy studies. Morphology and thickness of the membranes are investigated using surface and cross-sectional FESEM images. The filtration study showed that rGO membrane has higher water flux (52 L m?2h?1) than GO (40 L m?2h?1) membrane at differential pressure of 0.3MPa. Moreover, both membranes show congo red rejection of 96%. Prior studies showed that water flux decreased upon reduction of GO membrane which hindered the filtration properties of the membrane. Current work indicates that controlled reduction of GO leads to an enhancement in water flux, maintaining the dye rejection ratio. Graphical Abstract: [Figure not available: see fulltext.] 2023, Qatar University and Springer Nature Switzerland AG.
- Source
- Emergent Materials, Vol-6, No. 3, pp. 911-916.
- Date
- 2023-01-01
- Publisher
- Institute for Ionics
- Subject
- Dye rejection; Filtration; Graphene oxide; Reduced graphene oxide
- Coverage
- Jose J.K., Department of Physics and Electronics, Christ (Deemed to Be University), Karnataka, Bangalore, 560029, India; Mishra B., Department of Materials Science & Engineering, Indian Institute of Technology Delhi, Hauz Khas, New Delhi, 110016, India; Cherian C.T., Department of Physics and Electronics, Christ (Deemed to Be University), Karnataka, Bangalore, 560029, India; Tripathi B.P., Department of Materials Science & Engineering, Indian Institute of Technology Delhi, Hauz Khas, New Delhi, 110016, India; Balachandran M., Department of Physics and Electronics, Christ (Deemed to Be University), Karnataka, Bangalore, 560029, India
- Rights
- Restricted Access
- Relation
- ISSN: 25225731
- Format
- Online
- Language
- English
- Type
- Article
Collection
Citation
Jose J.K.; Mishra B.; Cherian C.T.; Tripathi B.P.; Balachandran M., “Synthesis and characterization of graphene oxide and reduced graphene oxide membranes for water purification applications,” CHRIST (Deemed To Be University) Institutional Repository, accessed February 25, 2025, https://archives.christuniversity.in/items/show/14217.