Ye Xi, Xu Qingchi, Xu Jun
Department of Physics, Research Institute for Biomimetics and Soft Matter, Fujian Provincial Key Laboratory for Soft Functional Materials, Xiamen University Xiamen 361005 P. R. China
Jiujiang Research Institute of Xiamen University Jiujiang 332000 P. R. China.
RSC Adv. 2019 Feb 18;9(11):5895-5900. doi: 10.1039/c9ra00209j.
Polypyrrole (PPY) is a type of dye adsorbent with good adsorbing capability. Fabrication of PPY with a porous architecture, though technically challenging, can further enhance its dye adsorbing capability due to the tremendous increase of surface area. In this manuscript, an oxidant-templating strategy was developed to fabricate pure PPY hydrogel (PHG) beads comprising nanofibrous networks, which were utilized as highly efficient dye absorbents. For instance, PPY hydrogel beads showed a maximum adsorption capacity of 236.9 mg g for methyl orange (MO), which was significantly higher than that of PPY powder. The minimal effective concentration of MO for the adsorption was as low as 0.4 ppm. Besides that, the PPY hydrogel beads displayed good regeneration performance for adsorbing organic dyes. Thus, the PPY hydrogel beads with low solid contents and large surface area could be considered as a promising organic dye absorbent for wastewater treatment in various industrial fields.
聚吡咯（PPY）是一种具有良好吸附能力的染料吸附剂。制备具有多孔结构的PPY，尽管在技术上具有挑战性，但由于表面积的大幅增加，可以进一步提高其染料吸附能力。在本论文中，开发了一种氧化剂模板策略来制备包含纳米纤维网络的纯PPY水凝胶（PHG）珠，这些珠被用作高效染料吸附剂。例如，PPY水凝胶珠对甲基橙（MO）的最大吸附容量为236.9 mg/g，显著高于PPY粉末。吸附MO的最小有效浓度低至0.4 ppm。除此之外，PPY水凝胶珠在吸附有机染料方面表现出良好的再生性能。因此，具有低固体含量和大表面积的PPY水凝胶珠可被视为用于各种工业领域废水处理的有前途的有机染料吸附剂。
