Figure 1.

A) Oxygen consumption during the autoxidation of styrene (4.3 m) in PhCN initiated by AIBN (25 mm) at 30°C without inhibitor, 3.8 µm of TOH or with 0.15 mg mL⁻¹ of CoNPs, CoNPs–N₃, CoNPs–Oct and CoNPs–TOH (corresponding to a concentration of TOH groups of 14.4 µm) ; R_i = 3.6 × 10⁻⁹ ms⁻¹. B) Photograph of the reaction vessels containing the NPs in the absence (left) and in the presence (right) of magnetic stirring.