Third Day Poster Session, 17 June 2010 - NanoTR-VI

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Poster Session, Thursday, June 17
Theme F686 - N1123
Synthesis of Nano Silica Based Sol-Gel Dendritic Materials for the Removal of Atrazine from Water
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UAyber YldrmUP P, Aylin ÖzkanP Pand Turgay SeçkinP P*
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PDepartment of Chemistry, University of Inonu, Malatya, TR Türkiye 44280
Abstract-In this study, synthesis, nano silica was prepared by Stöber method and modified with -aminopropyltriethoxysilane by sol-gel
method and surfactant modified atrazine captivator was covalently attached to the matrix as dendritic group The present study demonstrates a
novel approach for preparing nano materials with atrazine removal capacity.
The broadleaf herbicide atrazine is one of the most widely
used herbicides for weed control during the production of
corn, sorghum, and other crops [1] Although many European
countries have banned its use, over 60 million pounds of
atrazine are used annually. As a result, atrazine is the most
commonly detected herbicide in ground and standing water
and this herbicides have been linked to health risks in animals
and humankind.
Currently, the best available technology for removal of
atrazine from groundwater is activated charcoal. Alternative
methods for the removal of atrazine from groundwater include
engineered organoclays, molecularly imprinted
polymers,engineered microorganisms, oxidation strategies ,
photodegradation using ultraviolet light, nano- or
ultrafiltration, and polar polymeric supports. The use of
reactive solid supports for the selective removal of atrazine
from water has not been reported. Reactive resins have been
successfully applied to the efficient removal of electrophilic
and nucleophilic compounds from solutions. However,
applications have been limited mainly to organic and
combinatorial synthesis. Here, we describe a strategy for the
sequestration of atrazine and its major metabolites. The
strategy is presumably generalizable across many of the
triazine herbicides, as well as other select herbicides such as
metolachlor [2-3]
amine and cyanuric chloride in THF and attached to the silica
matrix by covalent bonding between amino groups of the
matrix and the chloro group of the dendrimer.
Conventional characterization methodology was used to
characterize the nano materials which includes FT-IR, SEM-
EDAX, TGA, DTA and DSC analysis.
The authors wishes to thank Inonu University Scientific
Research Center for the support 2010-22 and 17.
*Corresponding author: ayberyildirim@gmail.com
[1] (a) For recent efforts see: Kim, J.-B.; Huang, W.; Miller, M. D.;
Baker, G. L.; Bruening, M. L. J Polym.Sci Part A: Polym Chem
2003, 41, 386–394. (b) Barner, L.; Zwaneveld, N.; Pham, Y.; Davis,
T. P. J Polym Sci Part A: Polym Chem 2002, 40, 4180–4192. (c)
Blomberg, S.; Ostberg, S.; Harth, E.; Bosman,A. W.; Van Horn, B.
Hawker, C. J. J Polym.Sci Part A: Polym Chem 2002, 40, 1309–
1320. (d) Luo, Hutchison, J. B.; Anseth, K. S.; Bowman, C. N.J
Polym Sci Part A: Polym Chem 2002, 40, 1885–1891.
[2] (a) Tomalia, D. A.; Frechet, J. M. J. J Polym SciPart A: Polym
Chem 2002, 40, 2719–2728. (b) Frechet,J. M. J. J Polym Sci Part A:
Polym Chem 2003, 41, 3713–3725.3. (a) Lee, B. Y; Oh, J. S.
Macromolecules 2000, 33,3194–3195. (b) Mayr, M.; Buchmeiser, M.
R.;Wurst, K. Adv Synth Catal 2002, 344, 712–719.
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Figure 1. Surfactant modified silica surface
This paper describes the selection of nucleophilic groups for
atrazine sequestration using solution phase competition
reactions; the use of these groups on a solid support for the
sequestration of atrazine, its metabolites, and another triazine
herbicide; and the evidence for covalent attachment.
In this work, nano silica was prepared by Stöber method and
modified with -aminopropyltriethoxy silane by means of solgel
method. Surfactant dendrimer was prepared with t-octyl
6th Nanoscience and Nanotechnology Conference, zmir, 2010 796