Reductive dechlorination of γ-hexachlorocyclohexane using Fe-Pd bimetallic nanoparticles

摘要: Abstract Nanoscale Fe–Pd bimetallic particles were synthesized and used for degradation of lindane (γ-hexachlorocyclohexane) in aqueous solution. Batch studies showed that 5 mg/L was completely dechlorinated within 5 min at a catalyst loading 0.5 g/L the process followed first-order kinetics. GC–MS analysis corroboration with GC-ECD results presence cyclohexane as final product. The proposed mechanism reductive dechlorination involves Fe corrosion-induced hydrogen atom transfer from Pd surface. enhanced efficiency nanoparticles is attributed to: (1) high specific surface area nanoscale metal (60 m 2 /g), manyfold greater commercial grade micro- or milli-scale iron (∼1.6 m /g); and, (2) increased catalytic reactivity due to on Recycling column these exhibit efficient sustained activity.