用于环境修复的铁基磁性活性炭织物的工程设计
Engineering of Iron-Based Magnetic Activated Carbon Fabrics for Environmental Remediation.
作者信息
Haham Hai, Grinblat Judith, Sougrati Moulay-Tahar, Stievano Lorenzo, Margel Shlomo
机构信息
Institute of Nanotechnology and Advanced Materials, Department of Chemistry, Bar-Ilan University, Ramat-Gan 52900, Israel.
Institute Charles Gerhardt (UMR 5253 CNRS), Université Montpellier 2, CC 1502, Place E. Bataillon, Montpellier 34095, Cedex 5, France.
出版信息
Materials (Basel). 2015 Jul 22;8(7):4593-4607. doi: 10.3390/ma8074593.
Magnetic Fe₃O₄, Fe and Fe/Pd nanoparticles embedded within the pores of activated carbon fabrics (ACF) were prepared by impregnation of the ACF in iron acetylacetanoate (Fe(acac)₃) ethanol solution, followed by thermal decomposition of the embedded iron precursor at 200, 400 and 600 °C in an inert atmosphere. The effect of the annealing temperature on the chemical composition, shape, crystallinity, surface area, pore volume, and magnetic properties of the various functionalized ACF was elucidated. The Fe nanoparticles within the ACF were also doped with tinier Pd nanoparticles, by impregnation of the Fe/ACF in palladium acetate ethanol solution. The potential use of the functionalized ACF for removal of a model azo-dye, orange II, was demonstrated. This study illustrated the enhanced removal of the dye from an aqueous solution according to the following order: Fe/Pd/ACF > Fe/ACF > ACF. In addition, the enhanced activity of Fe₃O₄/ACF in the presence of increasing concentrations of H₂O₂ (Fenton catalysts) was also illustrated.
通过将活性炭织物（ACF）浸渍在乙酰丙酮铁（Fe(acac)₃）乙醇溶液中，然后在惰性气氛中于200、400和600℃对嵌入的铁前驱体进行热分解，制备了嵌入活性炭织物孔隙内的磁性Fe₃O₄、Fe和Fe/Pd纳米颗粒。阐明了退火温度对各种功能化ACF的化学成分、形状、结晶度、表面积、孔体积和磁性的影响。通过将Fe/ACF浸渍在醋酸钯乙醇溶液中，ACF内的Fe纳米颗粒还掺杂了更小的Pd纳米颗粒。展示了功能化ACF用于去除模型偶氮染料橙II的潜在用途。该研究表明，从水溶液中去除染料的能力增强顺序如下：Fe/Pd/ACF > Fe/ACF > ACF。此外，还展示了在H₂O₂（芬顿催化剂）浓度增加的情况下，Fe₃O₄/ACF的活性增强。
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