Figure 4. (a) FL spectra of Mn3O4 NPs, and (b) UV-Vis Spectra of Mn3O4 NPs

From

Synthesis and Characterization of Mn3O4 Nanoparticles for Biological Studies

Murugan Perachiselvi, Muthiah Sakthi Bagavathy, J. Jenson Samraj, E. Pushpalaksmi, G. Annadurai

Applied Ecology and Environmental Sciences. 2020, 8(5), 273-277 doi:10.12691/aees-8-5-13