Browsing by Subject "VOC removal"
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Item Open Access Cyclodextrin short-nanofibers using sacrificial electrospun polymeric matrix for VOC removal(Springer, 2018) Çelebioğlu, Aslı; Uyar, TamerCyclodextrins (CD) are cyclic oligosaccharides that can form noncovalent host-guest inclusion complexes to yield intriguing supramolecular structures. Electrospinning of nanofibers from CD is challenging since they are small molecules, nonetheless, electrospun nanofibers from CD would be particularly attractive because of the distinctive properties obtained by combining the very large surface area of nanofibers along with the inclusion complexation capability of CD. Herein, we performed the electrospinning of native CD type (i.e. γ-CD) using a minimal amount of carrier polymeric matrix (polyethylene oxide (PEO)). Once, the uniform nanofibers were electrospun from γ-CD/PEO systems, the polymeric carrier matrix was selectively removed by simple washing procedure, at the end, γ-CD short-nanofibers were obtained. We observed that γ-CD short-nanofibers could remove volatile organic compounds (VOC) (i.e. aniline) due to the inclusion complexation capability whereas pristine γ-CD powder could not have the capability for the VOC removal.Item Open Access Removal of aniline from air and water by polymers of intrinsic microporosity (PIM-1) electrospun ultrafine fibers(Academic Press, 2018) Satılmış, Bekir; Uyar, TamerThis research aims to investigate the possibility of electrospun fibers from Polymers of Intrinsic Microporosity (PIM-1) as an alternative adsorbent for aniline removal from both air and aqueous solution. Adsorption properties of electrospun PIM-1 fibers were compared with powder and film form of PIM-1. While electrospun PIM-1 nanofibrous mat can adsorb 871 mg g−1 aniline from air, it can also adsorb 78 ± 5.4 mg g−1 aniline from aqueous environment when 50 mg L−1 aniline solution is used. The experimental maximum adsorption capacity of electrospun PIM-1 fibers was found as (qe) 138 mg g−1. Langmuir and Freundlich isotherm models have been studied and Langmuir model found more appropriate for aniline adsorption on electrospun PIM-1 fibers. The study reveals that self-standing electrospun fibrous mat of PIM-1 has shown potential to be used as an efficient adsorbent material for the adsorption of VOCs from air and aqueous system thanks to its fast kinetic and high adsorption capacity.