This abstract is available through QScience.com ARC '16 Cite this arcle as: Al-Saad KA, Ramadan AA, Rakib MF, Abul Baker AA. (2016). Synthesis and Characterizaon of Funconalized Silica-Nanoparcles and their Applicaons for the Removal of Pescides from Aqueous Soluon. Qatar Foundaon Annual Research Conference Proceedings 2016: EEPP2325 hp://dx.doi.org/10.5339/qfarc.2016.EEPP2325. Energy and Environment Pillar http://dx.doi.org/10.5339/qfarc.2016.EEPP2325 Synthesis and Characterizaon of Funconalized Silica-Nanoparcles and their Applicaons for the Removal of Pescides from Aqueous Soluon Khalid A. Al-Saad, Ahmed A. Ramadan, Md F Rakib, Abdullah A. Abul Baker Qatar University, QA Email: kalsaad@qu.edu.qa 1. Abstract Silica nanoparcles funconalized with three different acve funconal groups (C-8, cyano-propyl, and methacrylate (MA)) were synthesized, characterized and applied for the removal of ten carbamate pescides from aqueous soluon. Two methods were used for the synthesis of funconalized silica (graſting and sol-gel method). SEM, FTIR, and HCN were used for the characterizaon of the parcles, while LC-MS/MS was used for the quantave analysis of carbamate pescides in the non-treated and treated aqueous soluons. The characterizaon results indicated the formaon of uniformed, spherical and mono-dispersed parcles when the cyano and MA parcles were prepared by the Sol-gel. Also, results indicated that all of the synthesized parcles were enhances for the removal of carbamate pescides, and MA prepared by the Sol-gel methods had the highest % removal for most of the carbamate pescides tested. 2. Introducon Acve funconal groups such as C8 and cyano-propyl have good recovery and can selecvely react with carbamate pescides [1]. Also, previous works [2] have shown that methyl methacrylate have some selecvity and high efficiency to bind with carbamate pescides. Yet, invesgaons are sll needed to improve the selecvity and efficiency of solid phase extracon via surface modificaons. Successful idenficaon of the host funconal groups that will selecvely react with the guest (contaminant or analyte) will be highly important for the purpose extracon and quanficaon of the specific analyte. Also, the success to immobilize host molecules that react specifically with pollutants in aqueous soluon will allow the remediaon of water. The objecve of this work is to prepare modified