In a typical synthesis of and ZVI is a true redox reaction [3]. Several studies
higher surface Fe° nanoparticles, 4.0 g of FeSO .7H O 4 2
was dissolved in 200 mL of 30% methanol and 70%
de-ionized water (v/v). The pH was adjusted to about
6.8 by 3.8 M NaOH [8]. Then 1.5 g of NaBH powder was 4
dissolved in 10 mL