Department of Applied Physics, Higher Institute for Applied Sciences and Technology, Damascus, Syria.
Environ Sci Pollut Res Int. 2019 Dec;26(36):37282-37295. doi: 10.1007/s11356-019-06654-1. Epub 2019 Nov 20.
This work evaluates the performance of electrospun nanofiber membranes of PLLA coated with p-toluenesulfonic acid doped polyaniline (pTSA-PANI). The adsorption on the prepared membranes of methyl orange (MO), taken as an example of anionic organic dye pollutants, was studied. The effects of different parameters on the adsorption capacity and removal efficiency, such as MO concentration, temperature, adsorbent dosage, pH, and ionic strength of the solution, were investigated. The results indicate the beneficial effect of coating PLLA membranes with pTSA-PANI in promoting the adsorption performance of the membranes. The grounds behind this enhancement are discussed. The adsorption kinetics and adsorption isotherms were performed. DC conductivity and AC impedance measurements of the studied membranes were conducted. The values were correlated to MO concentrations, suggesting the potential capacity of the current membrane to be used as a sensor of MO concentration. Graphical abstract.
这项工作评估了涂有对甲苯磺酸掺杂聚苯胺（pTSA-PANI）的 PLLA 电纺纳米纤维膜的性能。以阴离子有机染料污染物甲基橙（MO）为例，研究了其在制备的膜上的吸附作用。考察了不同参数对吸附容量和去除效率的影响，如 MO 浓度、温度、吸附剂用量、pH 值和溶液的离子强度。结果表明，用 pTSA-PANI 涂覆 PLLA 膜对促进膜的吸附性能有有益的影响。讨论了这种增强的原因。进行了吸附动力学和吸附等温线的研究。对所研究的膜进行了直流电导率和交流阻抗测量。这些值与 MO 浓度相关联，表明当前膜作为 MO 浓度传感器的潜在能力。
