|
|||||
|
|
Oxolane-2,5-dione modified electrospun cellulose nanofibers for heavy metals adsorption |
|
| Authors: | Stephen Musyoka Catherine Ngila Brenda Moodley Andrew Kindness Leslie Petrik Corrine Greyling |
| Affiliation: | a University of Kwazulu-Natal, Private Bag X54001, Westville Durban 4000, South Africa b Environmental and NanoScience Lab, Department of Chemistry, Faculty of Science, University of Western Cape, Private Bag X17, Bellville 7535, South Africa c Cape Organic Chemical Optimization (Pty) Ltd 9 Avenue de Mist, Claremont 7708, South Africa d University of Johannesburg, Department of Chemical Technology, P.O Box 17011, Doornfontein 2028, Johannesburg, South Africa |
| Abstract: | Functionalized cellulose nanofibers have been obtained through electrospinning and modification with oxolane-2,5-dione. The application of the nanofibers for adsorption of cadmium and lead ions from model wastewater samples is presented for the first time. Physical and chemical properties of the nanofibers were characterized. Surface chemistry during preparation and functionalization was monitored using Fourier transform-infrared spectroscopy, scanning electron microscopy, carbon-13 solid state nuclear magnetic resonance spectroscopy and Brunauer Emmett and Teller. Enhanced surface area of 13.68 m2 g−1 was recorded for the nanofibers as compared to the cellulose fibers with a surface area of 3.22 m2 g−1. Freundlich isotherm was found to describe the interactions better than Langmuir: Kf = 1.0 and 2.91 mmol g−1 (r2 = 0.997 and 0.988) for lead and cadmium, respectively. Regenerability of the fiber mats was investigated and the results obtained indicate sustainability in adsorption efficacy of the material. |
| Keywords: | Electrospinning Functionalization Oxolane-2 5-dione Regenerability Nanofibers |
| 本文献已被 ScienceDirect PubMed 等数据库收录！ | |