Fig. 2From: Advancing colorectal cancer therapy with biosynthesized cobalt oxide nanoparticles: a study on their antioxidant, antibacterial, and anticancer efficacyX-ray diffraction (XRD) and Fourier-transform infrared (FTIR) spectra of Co3O4 NPs. a XRD spectrum of Co3O4 NPs before heating in the furnace (AMP), after heating at 500 °C for 2 h (Co3O4 NPs-h 500 °C), and after heating at 600 °C for 2 h (Co3O4 NPs-h 600 °C). b FTIR spectrum of Co3O4 NPs before annealing, and c after annealing at 600 °C for 2 hBack to article page