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The current paper investigated the removal of the azo dye Orange II from water using advanced oxidation processes based on sulfate radicals. The cobalt oxide catalyst immobilized on graphene oxide (GO) can activate peroxymonosulfate (PMS) for the degradation of Orange II in water. The Co 3 O 4 /GO catalyst system was characterized via X-ray diffraction, Fourier transform infrared spectroscopy,...
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