Fig. 9From: Morphologically controlled synthesis of ferric oxide nano/micro particles and their catalytic application in dry and wet media: a new approach a Time dependent UV–Visible spectra of reduction of 4-NP catalyzed by product A in aqueous medium. b Plot of ln(At/A0) versus time for reduction of 4-NP catalyzed by product A–E [conditions: [4-NP] = 80 μM, [NaBH4] = 8 mM, [Fe3O4] = 1 μg/L and temperature = 22 °C]Back to article page