Highly efficient decontamination of nerve agent sarin surrogate DMMP using the novel NiFe۲O۴/NaY-type zeolite nanocomposite adsorbent

In this work, NiFe۲O۴/NaY-type zeolite nanocomposite was manufactured by the hydrothermal strategy and subsequently characterized via FE-SEM, EDX, EDX dot mapping, FTIR, XRD and VSM techniques. The decontamination of nerve agent sarin surrogate dimethyl methyl phosphonate (DMMP) was then conducted over the as-synthesized NiFe۲O۴/NaY-type zeolite nanocomposite adsorbent from water media using ۳۱PNMR analysis. Various physicochemical parameters, involving contact time, adsorbent dosage and initial DMMP concentration on the decontamination of DMMP nerve simulant were precisely investigated. ۳۱PNMR analysis data verified that the maximumdecontamination of ۹۸.۲% for DMMP. The factors obtained including contact time of ۶۰ min, initial concentration of ۶۰ mg/L and adsorbent dose of ۵۰ mg were considered as the optimal amounts for the decontamination reaction. Finally, methyl phosphoric acid (MPA) as the harmless degradation product of DMMP on the NiFe۲O۴/NaY-type zeolite nanocomposite was emerged and recognized.

Keywords:

NiFe۲O۴/NaY , zeolite , nanocomposite , adsorbent , decontamination , DMMP , MPA.