Preparation and characterization of titania-cyanopropyltriethoxysilane sorbent for the extraction of polar aromatic amines
A new titanium(IV) butoxide-cyanopropyltriethoxysilane (Ti-CNPrTEOS) hybrid material was successfully synthesized for the use as sorbent for the extraction of polar aromatic amines. The sorbent was synthesized by hydrolysis and condensation of titanium(IV) butoxide and cyanopropyltriethoxysilan...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
| Published: |
Springer Science+Business Media New York
2015
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| Subjects: | |
| Online Access: | http://irep.iium.edu.my/43214/ http://irep.iium.edu.my/43214/ http://irep.iium.edu.my/43214/1/JSST_journal.pdf |
| Summary: | A new titanium(IV) butoxide-cyanopropyltriethoxysilane
(Ti-CNPrTEOS) hybrid material was successfully
synthesized for the use as sorbent for the extraction
of polar aromatic amines. The sorbent was synthesized by
hydrolysis and condensation of titanium(IV) butoxide and
cyanopropyltriethoxysilane with the presence of hydrochloric
acid as catalyst via sol–gel method. Several factors
influencing the synthesized sorbent such as solvent selection,
mol of water content, ratio of titanium(IV) butoxide and
cyanopropyltriethoxysilane and aging temperature were
investigated and optimized. The sorbents were characterized
by fourier transform-infrared, field-emission scanning electron
microscopy-energy, CHN elemental analysis and thermogravimetric
analysis. The applicability of the sorbents for
the extraction of polar aromatic amines by the batch sorption
method was extensively studied and evaluated. Under the
optimum synthesis conditions (tetrahydrofuran as solvent,
1.2 M of hydrochloric acid catalyst, 4 mol of water content
with ratio of titanium(IV) butoxide and cyanopropylteriethoxysilane
of 1:1 and aging temperature of 60 C), the
extraction showed high recovery towards the extraction of
polar aromatic amines. The synthesized sorbent was successfully
applied for the extraction of selected aromatic
amines via batch sorption method in waste water samples
prior to the gas chromatography-flame ionization detector
separation. The synthesized sol–gel Ti-CNPrTEOS sorbent
demonstrated the potential as an alternative extraction sorbent
with higher selectivity towards polar aromatic amines. |
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