A three-dimensional magnetic carbon framework derived from Prussian blue and amylopectin impregnated polyurethane sponge for lead removal
| Autor: | Yong-Liang Yu, Yu-Ting Zhuang, Wei Gao, Jian-Hua Wang |
|---|---|
| Rok vydání: | 2016 |
| Předmět: |
Thermogravimetric analysis
Prussian blue Materials science chemistry.chemical_element 02 engineering and technology General Chemistry 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences 0104 chemical sciences law.invention chemistry.chemical_compound Adsorption chemistry Chemical engineering X-ray photoelectron spectroscopy law Specific surface area Amylopectin Organic chemistry General Materials Science Calcination 0210 nano-technology Carbon |
| Zdroj: | Carbon. 108:190-198 |
| ISSN: | 0008-6223 |
| DOI: | 10.1016/j.carbon.2016.06.107 |
| Popis: | A novel three-dimensional (3D) magnetic carbon framework (MCF) is developed and applied as an efficient absorbent for the removal of lead from aqueous medium. The MCF adsorbent was designed with Prussian blue (PB), amylopectin and polyurethane (PU) sponge serving as iron and carbon precursors at a calcination temperature of 450 °C. The framework is characterized by scanning electron microscopy (SEM), X-ray diffraction (XRD), Brunauer-Emmett-Teller (BET), thermogravimetric analysis (TGA), Fourier-transform infrared (FT-IR) spectroscopy, X-ray photoelectron spectroscopy (XPS) and surface charge analysis to elucidate the mechanism for the formation of the framework structure and its performance in Pb (II) removal. The 3D network structure of PU sponge provides an ideal support for the magnetic PB. Meanwhile, a better porous network structure obtained by the introduction of amylopectin endows MCF with a high specific surface area and a large number of active adsorption sites. An adsorption capacity of up to 386 mg g−1 for Pb (II) is achieved in aqueous medium at pH 7. MCF provides excellent features of regeneration and ease of magnetic separation, thus it shows a vast potential for water remediation. |
| Databáze: | OpenAIRE |
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