Preparation, characterization of electrospun meso-hydroxylapatite nanofibers and their sorptions on Co(II)

Journal of Hazardous Materials
Hualin WangShaotong Jiang

Abstract

In this work, mesoporous hydroxylapatite (meso-HA) nanofibers were prepared via calcination process with polyvinyl alcohol/HA (PVA/HA) hybrid nanofibers fabricated by electrospinning technique as precursors, and the removal efficiency of meso-HA nanofibers toward Co(II) was evaluated via sorption kinetics and sorption isotherms. Furthermore, the sorption behaviors of Co(II) on meso-HA nanofibers were explored as a function of pH, ionic strength, and thermodynamic parameters. There existed hydrogen bonds between HA and PVA matrix in precursor nanofibers which could change into meso-HA nanofibers with main pore diameter at 27nm and specific surface area at 114.26m(2)/g by calcination process. The sorption of Co(II) on meso-HA was strongly dependent on pH and ionic strength. Outer-sphere surface complexation or ion exchange was the main mechanisms of Co(II) adsorption on meso-HA at low pH, whereas inner-sphere surface complexation was the main adsorption mechanism at high pH. The sorption kinetic data were well fitted by the pseudo-second-order rate equation. The sorption isotherms could be well described by the Langmuir model. The thermodynamic parameters (ΔH°, ΔS° and ΔG°) calculated from the temperature-dependent sorption isoth...Continue Reading

References

Mar 30, 2004·Environmental Science & Technology·A Kowal-FouchardJ J Ehrhardt
Jun 13, 2006·Water Research·I SmiciklasM Mitrić
Jul 6, 2007·Journal of Hazardous Materials·Hayrettin YüzerMehmet Sabri Celik
Oct 9, 2007·The Science of the Total Environment·R W Leggett
Oct 24, 2007·Journal of Colloid and Interface Science·Alessia CoramiVincenzo Ferrini
Mar 4, 2008·Journal of Hazardous Materials·Wei ZhengGuang-Ming Zeng
Jul 25, 2008·Journal of Hazardous Materials·Jun HuXiangke Wang
Jun 19, 2009·Environmental Science & Technology·Xiaoli TanBernd Grambow
Sep 22, 2009·Journal of Hazardous Materials·Guixia ZhaoXiangke Wang
May 5, 2010·The Journal of Physical Chemistry. B·Jun HuMasaaki Nagatsu
Jun 26, 2012·Journal of Hazardous Materials·Dong Suk HanAhmed Abdel-Wahab

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