“…Metallic iron endows the material with relatively strong reducing power (Li and Zhang, 2007;Xi et al, 2010), and high capacity to immobilize pollutants (Neumann et al, 2013;Su et al, 2014aSu et al, , 2014bZhang et al, 2013). The major disadvantage of zero-valent iron doped carbon is the complicated manufacturing procedure, which involves impregnation (Liu and Zhang, 2010;Wang et al, 2011). Impregnation requires considerable time and energy, and thus, it is important to optimize the manufacturing procedure to save time and energy.…”