Fig. 7From: Hollow and oval-configured ultrafine Co3O4 as a highly-efficient activator of monopersulfate for catalytic elimination of Azorubin SMapped isosurface of Fukui function of ARS: (a) labels of atoms, (b) f −, (c) f 0, and (d) f+, (e) the front-view, and (f) back-view ESP-mapped surface of ARSBack to article page