Design and fabrication of in-situ N-doped paper-like carbon nanofiber film for thiophene removal from a liquid model fuel.

The novel nitrogen-doped porous carbon nanofibers film (PAN-CNFs) had been successfully prepared by electrospinning with polyacrylonitrile as carbon precursor after calcination under N atmosphere. The structure and physical properties of PAN-CNFs were determined by a series of characterizations. The results showed that the PAN-CNFs-800 have the higher N content (10.02 wt.%), larger surface area (354.327 m/g) and optional V/V (28.14 %). The adsorption desulphurization was examined by thiophene (TH) simulated oil. The experimental results demonstrated that the PAN-CNFs were the desirable adsorption materials as alternative candidate in present adsorption technique. Furthermore, the pseudo order kinetics and adsorption isotherm of the PAN-CNFs-800 was intensive studied, which exhibited good adsorptive capacity for thiophene (TH) reached 113.33 mg/L according to the Langmuir isotherm model and maintained promising recycling reusing performance. The adsorption mechanism was proposed by these models, which should be attributed to the cooperating effect of the proper pore structure and the π-π complexation interactions.