Green synthesis of colloidal copper oxide nanoparticles using Carica papaya and its application in photocatalytic dye degradation R Sankar, P Manikandan, V Malarvizhi, T Fathima, KS Shivashangari, ... Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy 121, 746-750, 2014 | 530 | 2014 |