Sol-gel TiO2/Carbon Paste Electrode Nanocomposites for Electrochemical-assisted Sensing of Fipronil Pesticide

  • Maulidiyah, Maulidiyah (Department of Chemistry, Faculty of Mathematics and Natural Sciences, Universitas Halu Oleo) ;
  • Azis, Thamrin (Department of Chemistry, Faculty of Mathematics and Natural Sciences, Universitas Halu Oleo) ;
  • Lindayani, Lindayani (Department of Chemistry, Faculty of Mathematics and Natural Sciences, Universitas Halu Oleo) ;
  • Wibowo, Dwiprayogo (Department of Pharmacy, Faculty of Sciences and Technology, Institut Teknologi dan Kesehatan Avicenna) ;
  • Salim, La Ode Agus (Department of Pharmacy, Faculty of Sciences and Technology, Institut Teknologi dan Kesehatan Avicenna) ;
  • Aladin, Andi (Chemical Engineering, Faculty of Industrial Technology, Universitas Muslim Indonesia) ;
  • Nurdin, Muhammad (Department of Chemistry, Faculty of Mathematics and Natural Sciences, Universitas Halu Oleo)
  • Received : 2019.04.30
  • Accepted : 2019.06.24
  • Published : 2019.12.31


The unique study of TiO2 sol-gel modified carbon paste electrode (CPE) nanocomposites have been developed for electrochemical sensor detecting fipronil pesticide compound. We develop the easy synthesized TiO2 via a sol-gel method and modified in CPE which applied electrochemical system as cyclic voltammetry (CV) because the concentration is proportional with current peaks. We discover the TiO2 optimal mass used of 0.1 g which is compared with 0.7 g carbon and 0.3 mL paraffin. It has high-current anodic (Ipa) of 1.13×103 μA and high-current cathodic (Ipc) -0.96×103 μA in scan rate of 0.5 V/s. The limit of detection (LOD) of fipronil has been determined of 34.0×10-5 μM in percent recovery of 0.8%. Its high-stability for lifetime TiO2-CPE nanocomposites was expressed for 13 days which mean that can be used for detecting fipronil pesticide.


Supported by : DRPM-Ministry of Research, Technology and Higher Education


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