Biomaterial Functionalized Graphene-Magnetite Nanocomposite: A Novel Approach for Simultaneous Removal of Anionic Dyes and Heavy-Metal Ions
| Autor: | Sujoy K. Das, Priyadarshani Choudhary, Thanusu Parandhaman, Baskaran Ramalingam |
|---|---|
| Rok vydání: | 2018 |
| Předmět: |
Materials science
Nanocomposite biology Renewable Energy Sustainability and the Environment Graphene General Chemical Engineering Metal ions in aqueous solution Biomaterial 02 engineering and technology General Chemistry 010501 environmental sciences 021001 nanoscience & nanotechnology biology.organism_classification 01 natural sciences law.invention Contact angle Colloid Adsorption Chemical engineering law Environmental Chemistry Shewanella oneidensis 0210 nano-technology 0105 earth and related environmental sciences |
| Zdroj: | ACS Sustainable Chemistry & Engineering. 6:6328-6341 |
| ISSN: | 2168-0485 |
| Popis: | Despite of immense application potential of graphene in wastewater treatment, the colloidal stability, aggregation and recyclability remains a major challenge. To address this issue, we report biomaterial functionalized graphene-magnetite (Bio-GM) nanocomposite as a novel recyclable material for treatment of wastewater containing dyes and heavy metals. The integration of biomaterial including living cells of Shewanella oneidensis with graphene-magnetite nanocomposite was characterized through UV–vis, FTIR, FESEM and fluorescent microscopic studies. The contact angle measurement depicted the hydrophilic property (water contact-angle 27.93°), whereas VSM result demonstrated super paramagnetic behavior of the nanocomposite with saturation magnetization value of 30.2 emu/g. The Bio-GM nanocomposite exhibited excellent adsorption capacity toward dyes and Cr6+ in both single and multicomponent system with removal capacity of 189.63 ± 7.11 and 222.2 ± 8.64 mg/g of dyes and Cr6+, respectively, suggesting selectiv... |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|