Enhanced photocatalytic degradation property of surfactant-free cobalt oxide nanocapsules on methylene blue dyeAnbalagan Karthikeyan, Ramasamy Mariappan, Ganesan Gowrisankar and Ethirajan KrishnamoorthyEur. Phys. J. Appl. Phys., 98 (2023) 10DOI: https://doi.org/10.1051/epjap/2022220212