Bioassembly of fungal hyphae/graphene oxide composite as high performance adsorbents for U(VI) removal
| Autor: | Kui Zheng, Wenkun Zhu, Geng Zou, Lichun Dai, Siyi Yang, Tao Duan, Peiheng Shi, Yiren Lian, Tao Chen, Yi Li |
|---|---|
| Rok vydání: | 2018 |
| Předmět: |
Graphene
Composite number Oxide General Physics and Astronomy 02 engineering and technology Surfaces and Interfaces General Chemistry 010402 general chemistry 021001 nanoscience & nanotechnology Condensed Matter Physics 01 natural sciences Endothermic process 0104 chemical sciences Surfaces Coatings and Films law.invention chemistry.chemical_compound Adsorption X-ray photoelectron spectroscopy chemistry law Zeta potential Water treatment 0210 nano-technology Nuclear chemistry |
| Zdroj: | Applied Surface Science. 458:226-235 |
| ISSN: | 0169-4332 |
| DOI: | 10.1016/j.apsusc.2018.07.081 |
| Popis: | In this paper, fungus hyphae/graphene oxide (FH/GO) with interesting net structure was prepared through a simple biological culture method for U(VI) removal. SEM, Zeta potential, FT-IR and XPS were applied to characterize the physicochemical properties of the resulting FH/GO composites, and batch and column adsorption experiments were conducted to elucidate their U(VI) adsorption performances and mechanisms. Results showed that FH/GO composite was highly efficient in U(VI) adsorption with a high reusability and stability. Specifically, compared to biomass (FH), the U(VI) adsorption capacity was increased by 60% for FH/GO composite at initial pH 6.0 (±0.1) and 20 °C, and the maximum U(VI) adsorption capacity for the FH/GO was 199.37 mg/g. Furthermore, the adsorption kinetics, thermodynamics and isotherms analysis demonstrated that the U(VI) adsorption on FH/GO was depended on the chemical adsorption, and it was an endothermic and spontaneous process. Therefore, these results suggested that the as-prepared FH/GO composite was promising in nuclear waste water treatment. |
| Databáze: | OpenAIRE |
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