Article ID Journal Published Year Pages File Type
148571 Chemical Engineering Journal 2013 7 Pages PDF
Abstract

Ag+-loaded polystyrene (PS) nanofibrous membranes were prepared by electrospinning combined with crosslinking, sulfonation, and ion-exchange. The adsorption experiments of thiophene were carried out using the fibrous membranes with maximum silver ion loading. The membranes were characterized by scanning electron microscopy (SEM), Fourier transform infrared spectroscopy (FTIR), X-ray diffraction (XRD), and UV–vis diffuse reflectance spectroscopy (UV–vis). The characterization results suggested that the silver ions were successfully loaded on the PS nanofibers. With increase of the sulfonation time, the ion-exchange capacity (IEC) of membranes increased first and then decreased. The IEC could reach the maximum value when sulfonation time of membranes was 60 min, and the loading amount of silver ion was about 5.7 mmol/g. The obtained Ag+-loaded PS nanofibrous membranes were used to adsorb the thiophene and the results indicated that the thiophene can be removed effectively. The functionalized electrospun membrane used as the adsorption media of removing thiophene can enrich the adsorbent species and its high adsorption due to the large specific surface could supply broad application prospects for deep desulfurization.

Graphical abstractAg+-loaded PS nanofibrous membrane can remove the thiophene effectively.Figure optionsDownload full-size imageDownload as PowerPoint slideHighlights► The silver ions were loaded on the electrospun polystyrene nanofibrous membrane. ► The crosslinking, sulfonation and ion-exchange processes of membrane were studied. ► The Ag+-loaded PS membrane shows great adsorption properties for thiophene.

Related Topics
Physical Sciences and Engineering Chemical Engineering Chemical Engineering (General)
Authors
, , , , ,