| ZIF-8/改性聚丙烯腈电纺纳米纤维的制备及其高效去除水中孔雀石绿 | |
| Preparation of zeolitic imidazolate frameworks-8/modified polyacrylonitrile electrospun nanofibers for efficient removal of malachite green from water | |
| 摘要: 通过原位生长方法，将最常见的金属有机骨架(MOFs)——沸石咪唑酯骨架材料(ZIF-8)固定到羧甲基化聚丙烯腈静电纺丝纳米纤维(PAN-COOH NFs)表面，得到ZIF-8/PAN-COOH NFs。通过扫描电子显微镜(SEM)、能量色散光谱(EDS)、X射线粉末衍射(XRD)和傅里叶变换红外光谱(FTIR)对合成的ZIF-8/PAN-COOH NFs形貌和结构进行表征，并深入研究ZIF-8/PAN-COOHNFs从废水中去除孔雀石绿(MG)的性能。研究发现： ZIF-8/PAN-COOH NFs对MG的吸附符合拟二级动力学方程，吸附过程可采用Langmuir等温线模型拟合，其对MG的最大吸附容量可达3 604 mg·g-1。此外，ZIF-8/PAN-COOH NFs在染料吸附实验中表现出良好的分离功能和重复利用性。 | |
| 关键词: ZIF-8 静电纺丝 纳米纤维 聚丙烯腈 吸附 孔雀石绿 | |
| 基金项目: 江苏省自然科学基金(No.BK20130969)和江苏省林业科技创新与推广项目(No.LYKJ-NANJING[2022]02)资助。 | |
| Abstract: A simple in-situ growth method was presented to synthesize zeolitic imidazolate framework-8 (ZIF-8), one of the most common metal-organic frameworks (MOFs) crystals, onto a carboxymethylated polyacrylonitrile electrospun nanofibers (PAN-COOH NFs). The synthesized ZIF-8/PAN-COOH NFs were characterized by field-emission scanning electron microscope (SEM), energy dispersive spectroscopy (EDS), X-ray powder diffraction (XRD), and Fourier-transform infrared (FTIR) spectroscopy. The characterization results confirmed that the ZIF-8 particles were successfully loaded on the surface of the PAN-COOH NFs. The ability of ZIF-8/PAN-COOH NFs to remove malachite green (MG), a model organic dye, from wastewater was evaluated to examine the potential of this novel material as an adsorbent. The adsorption to MG was consistent with the pseudo - second - order kinetic equation, and the adsorption process was expressed by the Langmuir isotherm model. The maximum adsorption capacity for MG was examined as 3 604 mg·g-1. It is noteworthy that the ZIF-8/PAN-COOH NFs could be easily separated from the dye solution and regenerated through a simple washing process for recycling. | |
| Keywords: ZIF-8 electrospinning nanofiber polyacrylonitrile adsorption malachite green | |
| 投稿时间：2023-03-30 修订日期：2023-06-28 | |
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| 徐鹏,戴伟,石伟山,邢刚,王钊贵,王莎莎,李群,游超群,郝德君.ZIF-8/改性聚丙烯腈电纺纳米纤维的制备及其高效去除水中孔雀石绿[J].无机化学学报,2023,39(10):1959-1968. | |
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