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首页> 外文期刊>Materials >Preparation of Amidoxime Polyacrylonitrile Chelating Nanofibers and Their Application for Adsorption of Metal Ions
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Preparation of Amidoxime Polyacrylonitrile Chelating Nanofibers and Their Application for Adsorption of Metal Ions

机译：偕胺肟聚丙烯腈螯合纳米纤维的制备及其在金属离子吸附中的应用

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摘要

Polyacrylonitrile (PAN) nanofibers were prepared by electrospinning and they were modified with hydroxylamine to synthesize amidoxime polyacrylonitrile (AOPAN) chelating nanofibers, which were applied to adsorb copper and iron ions. The conversion of the nitrile group in PAN was calculated by the gravimetric method. The structure and surface morphology of the AOPAN nanofiber were characterized by a Fourier transform infrared spectrometer (FT-IR) and a scanning electron microscope (SEM), respectively. The adsorption abilities of Cu2+ and Fe3+ ions onto the AOPAN nanofiber mats were evaluated. FT-IR spectra showed nitrile groups in the PAN were partly converted into amidoxime groups. SEM examination demonstrated that there were no serious cracks or sign of degradation on the surface of the PAN nanofibers after chemical modification. The adsorption capacities of both copper and iron ions onto the AOPAN nanofiber mats were higher than those into the raw PAN nanofiber mats. The adsorption data of Cu2+ and Fe3+ ions fitted particularly well with the Langmuir isotherm. The maximal adsorption capacities of Cu2+ and Fe3+ ions were 215.18 and 221.37 mg/g, respectively.
机译：通过静电纺塑制备聚丙烯腈（锅）纳米纤维，并用羟胺改性，以合成偕胺肟聚丙烯腈（AOPAN）螯合纳米纤维，其应用于吸附铜和铁离子。通过重量法计算丁腈基团的转化物。通过傅里叶变换红外光谱仪（FT-IR）和扫描电子显微镜（SEM）的特征在于AOPAN纳米纤维的结构和表面形态。评估Cu 2 + / sup>和Fe 3 + / sup>离子在甲烷纳米纤维垫上的吸附能力。 FT-IR光谱在锅中显示丁腈基团部分地转化为偕胺肟基团。 SEM检查证明，在化学改性后，PAN纳米纤维表面没有严重裂缝或降解迹象。铜和铁离子在AOPAN纳米纤维垫上的吸附容量高于原始锅纳纤维垫的吸附容量。 Cu 2 + / sup>和Fe 3 + 离子的吸附数据特别良好，与Langmuir等温线特别均匀。 Cu 2 + / sup>和Fe 3 + 离子的最大吸附容量分别为215.18和221.37mg / g。

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