“…TiO 2 is popular as a semiconductor that can be used for electrocatalysis of redox reaction of organic and inorganic species [ 120 , 121 ]. Moreover, TiO 2 has high affinity towards phosphate group in OPPs that makes it a promising metal oxide for detection of various OPPs like diazinon, parathion and fenitrothion [ 54 , [121] , [122] , [123] , [124] ]. The sensor demonstrated enhanced sensitivity when employing the Square Wave Voltammetry ( SWV ) technique compared to other electrochemical methods.…”