Ortega-Liebana, M. Carmen Hueso, José L. Ferdousi, Shammi Arenal, Raul Irusta, Silvia Yeung, King L. Santamaria, Jesus Extraordinary sensitizing effect of co-doped carbon nanodots derived from mate herb: application to enhanced photocatalytic degradation of chlorinated wastewater compounds under visible light Appl. catal., B Environ. 10.1016/j.apcatb.2017.06.021 2017 2017