Hydrothermal synthesis of silico-manganese nanohybrid for Cu(II) adsorption from aqueous solution
| Autor: | Qiufeng Zhu, Zehuan An, Feng Xudong, Hong Ye, Liting Wang |
|---|---|
| Rok vydání: | 2016 |
| Předmět: |
Aqueous solution
Materials science Metal ions in aqueous solution Inorganic chemistry General Physics and Astronomy chemistry.chemical_element 02 engineering and technology Surfaces and Interfaces General Chemistry Manganese 010501 environmental sciences 021001 nanoscience & nanotechnology Condensed Matter Physics 01 natural sciences Hydrothermal circulation Surfaces Coatings and Films Adsorption chemistry Zeta potential Hydrothermal synthesis Fourier transform infrared spectroscopy 0210 nano-technology 0105 earth and related environmental sciences |
| Zdroj: | Applied Surface Science. 371:102-111 |
| ISSN: | 0169-4332 |
| DOI: | 10.1016/j.apsusc.2016.02.219 |
| Popis: | A novel silico-manganese nanohybrid adsorbent (SMNA) was synthesized by a facile hydrothermal method, and characterized by X-ray diffraction (XRD), transmission electron microscopy (TEM), nitrogen adsorption-desorption, Fourier transform infrared spectroscopy (FT-IR) and zeta potential measurement. The adsorption of Cu(II) ions from aqueous solution on the SMNA was investigated with variations in contact time, pH and initial Cu(II) concentration. The results showed that hydrothermal method would generate nanowire/nanorod incomplete crystallite (δ-MnO2) adsorbent. The adsorption of Cu(II) onto SMNA increased sharply within 25 min and reached equilibrium gradually. The maximum adsorption capacities of SMNA for Cu(II) were ∼40–88 mg g−1, which was lower than δ-MnO2 (92.42 mg g−1) but had a lower pH dependency. As compared with δ-MnO2, higher adsorption capacities of SMNA (7.5–15 wt% of silica doping amount) for Cu(II) could be observed when pH of the aqueous solution was low ( |
| Databáze: | OpenAIRE |
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