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首页> 外文期刊>Journal of Residuals Science & Technology >Modified Electro-spun Polyvinyl Alcohol Nanofibers Used as Super Adsorbing Material for Lead Ions in Aqueous Solution
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Modified Electro-spun Polyvinyl Alcohol Nanofibers Used as Super Adsorbing Material for Lead Ions in Aqueous Solution

机译：改性电纺聚乙烯醇纳米纤维作为水溶液中铅离子的超强吸附材料

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Polyvinyl alcohol nanofibers (PVA) and novel polyvihyl arcohol nanofibers incorporated with cobalt metal organic framework (PVA/Co-MOF) sorbents were produced via electrospinning. The produced nanofibers were confirmed by scanning electron microscope (SEM), thermogravimetric analysis (TGA) and Fourier transform infrared (FTIR). SEM images showed consistent and beads free nanofibers were synthesized. FTIR spectra's exhibited shifts in critical functional groups positions thus it confirmed that there was a given amount of cobalt metal organic frameworks implanted in the incorporated nanofibers. TGA plots also confirmed that PVA/MOF nanofibers exhibited higher decomposition temperatures than that of the pure polyvinyl alcohol nanofibers. Therefore, it affirmed the amalgamation between cobalt metal organic frameworks and polyvinyl alcohol nanofibers. The ability of PVA and novel PVA/Co-MOF nanofibers to remove Pb2+ ions from solution was investigated. The sorption Pb2+ ions on incorporated nanofibers (novel PVA/Co-MO) were two-fold as compared to the pure polyvinyl alcohol nanofibers. The thermodynamic parameters: Gibbs free energy (AG) and apparent enthalpy (AH) showed that the adsorption Pb2+ ions onto the electro-spun nanofibers were spontaneous and exothermic.
机译：聚乙烯醇纳米纤维（PVA）和掺有钴金属有机骨架（PVA / Co-MOF）吸附剂的新型聚乙烯基Arcohol纳米纤维是通过静电纺丝生产的。通过扫描电子显微镜（SEM），热重分析（TGA）和傅立叶变换红外光谱（FTIR）来确认所产生的纳米纤维。 SEM图像显示一致并且合成了无珠的纳米纤维。 FTIR光谱显示出关键官能团位置的变化，因此证实了在掺入的纳米纤维中植入了一定数量的钴金属有机骨架。 TGA图还证实，PVA / MOF纳米纤维的分解温度比纯聚乙烯醇纳米纤维的分解温度高。因此，它证实了钴金属有机骨架与聚乙烯醇纳米纤维之间的融合。研究了PVA和新型PVA / Co-MOF纳米纤维从溶液中去除Pb2 +离子的能力。与纯聚乙烯醇纳米纤维相比，掺入的纳米纤维（新型PVA / Co-MO）上的Pb2 +离子吸附量是原来的两倍。热力学参数：吉布斯自由能（AG）和表观焓（AH）表明，电纺纳米纤维上的Pb2 +离子吸附是自发的且放热的。

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