Growth ZIF-8 on electrospun PAN nanofiber for TFME procedure

As a new geometry for solid-phase microextraction, thin-film microextraction (TFME) has become an attractive sample-preparation technique[1]. The high surface area-to-volume ratio together with the increase of extraction-phase volume enhanced the sensitivity of this technique without sacrificing the sampling time compared to other microextraction approaches. Comprehensive research has demonstrated the good agreement of the experimental data with the fundamental principle of this technique. In this work, Zeolitic imidazolate framework-8 (ZIF-8)-based PAN nanofibrous films were successfully fabricated by a simple strategy of in situ loading on a PAN substrate. In addition, the thin film was confirmed by scanning electron microscopy and X-ray diffraction. This thin film nanofibrous was applied in water treatment [2] by combining the unique properties of microporous material as active sizes for TFME procedure with a high surface area of electrospun polyacrylonitrile (PAN) film as the porous substrate.