rotective clothing must not suffer from the disadvantage of blocking the passage of air and water vapor through them, making the garments uncomfortable. Hence the research has concentrated on producing clothing and filters which are efficient in pesticides detoxification and self-decontamination and at the same time comfortable enough for wearer through enough permeability. In this thesis, activated carbon nanofibers containing Al2O3 and MgO nanoparticles were produced and the destructive adsorption of the Diazinon pesticide by them was investigated, with regards to the porosity characteristics as well as the properties of the metal oxide nanoparticles like specific surface area of the nanoparticles and the pore characteristics of the activated carbon nanofibers. The precursor used in the production of the activated carbon nanofibers was PAN. The results showed that type, amount and specific surface area of metal oxide nano particles affect the weight loss of PAN nanofibers in activation process. In turn, the weight loss of PAN nanofibers after carbonization and activation affect the porosity of the activated carbon nanofibers. The result also showed that the presence of Al2O3 and MgO nanoparticles in the activated carbon nanofibers increases the amount of destructively adsorbed Diazinon considerably, when compared with activated carbon nanofibers containing no metal oxide nanoparticles. Type, amount, specific surface area of metal oxide nano particles as well as the porosity characteristics of activated carbon nanofibers affect the adsorption rate and the total Diazinon destructive adsorption. Liquid chromatography showed the degradation of Diazinon by chemical reaction with Al2O3 and MgO nanoparticles. Liquid chromatography-mass spectrometry showed that the main product obtained from the Diazonin degradation is 2-isopropyl-6-methyl-4-pyrimidinol (IMP), which is less toxic than Diazinon. Comparison of the results obtained in this research with other researches highlights the considerable superiority and high potential of activated carbon nanofibers containing MgO and Al2O3 nanoparticles as pesticide adsorbents. Keywords: Pesticide; Diazinon; activated carbon nanofibers, Al2O3 and MgO nanoparticles, destructive absorption, protection clothing.