Abstract Electrospun carbon nanofibers (ECNFs) are hydrophobic materials and have inadequate dispersion in aqueous media. To solve this problem and sustain their applications in removing ionic pollutants, this study focuses on changing their nature to hydrophilic via surface functionalization using various amine-containing compounds such as ethylene diamine (EDA), p-phenylenediamine (PDA), 2,6-diaminopyridine (DAPy) and melamine (melam). These compounds can be grafted onto oxidized ECNFs (O-ECNFs) through amidation reaction, thus forming amine-functionalized electrospun carbon nanofibers (ECNFs-NH2). The morphology and structure of the prepared adsorbents were investigated using routine analysis. ECNFs-NH2 was applied for the removal of cationic dye and the obtained results showed that the adsorption capacity of ECNFs-NH2 was dependent on the type of amine agent. Moreover, the isotherm and kinetic studies of MB removal by ECNFs-NH2 followed Redlich-Peterson and pseudo-second order model, respectively. Adsorption mechanism of MB onto the surface of ECNFs-NH2 was proposed and calculated in terms of thermodynamic parameters.

中文翻译：

---

胺化电纺碳纳米纤维的合成及其在去除阳离子染料中的应用

摘要 电纺碳纳米纤维 (ECNFs) 是疏水性材料，在水性介质中分散不充分。为了解决这个问题并维持其在去除离子污染物方面的应用，本研究的重点是通过使用各种含胺化合物如乙二胺 (EDA)、对苯二胺 (PDA)、2,6-二氨基吡啶 (DAPy) 和三聚氰胺 (melam)。这些化合物可以通过酰胺化反应接枝到氧化的 ECNFs (O-ECNFs) 上，从而形成胺功能化的电纺碳纳米纤维 (ECNFs-NH2)。使用常规分析研究制备的吸附剂的形态和结构。ECNFs-NH2用于去除阳离子染料，所得结果表明ECNFs-NH2的吸附能力取决于胺剂的类型。此外，ECNFs-NH2 去除 MB 的等温线和动力学研究分别遵循 Redlich-Peterson 和伪二阶模型。根据热力学参数提出并计算了 MB 在 ECNFs-NH2 表面的吸附机制。