Two novel adsorbents synthesized by sol-gel process for removing of 4-nitrophenol from aqueous solutions


Sayilkan F. , SENER S.

FRESENIUS ENVIRONMENTAL BULLETIN, cilt.14, ss.484-488, 2005 (SCI İndekslerine Giren Dergi) identifier identifier

  • Cilt numarası: 14 Konu: 6
  • Basım Tarihi: 2005
  • Dergi Adı: FRESENIUS ENVIRONMENTAL BULLETIN
  • Sayfa Sayıları: ss.484-488

Özet

In this work, a new titanium alkoxide complex [titanium(IV)-n-propoxide-(4-nitrophenoxide)] was synthesized by the reaction between titanium(IV)-n-propoxide [Ti(OPrn)(4)] and 4-nitrophenol (4-NP) in different mole ratios at room temperature. GC, FT-IR and H-1-NMR analyses showed that each Ti(OPrn)4 mole reacts with 2 moles of 4-NP in maximum. This complex was hydrolyzed with 2 moles water per mole of Ti(OPrn)4, and hydrolysis products were characterized by thermal analyses and FT-IR. The optimum conditions for the adsorption of 4-NP on the calcinated powder from its aqueous solutions were determined. Adsorption experiments showed that the calcinated powder is a quite suitable material for the removal of 4-NP.