Although tremendous progress has recently been made in multi-walled carbon nanotubes (MWCNT) and titania, the photocatalytic degradation efficiency is still greatly limited by the ideal cobalt dopant concentration and temperature. Herein, Co-CNT/TiO2 composites were used to improve the photocatalytic degradation efficiency of malachite green (MG) solution. Consequently, compared to the binary CNT/TiO2 and pure TiO2 samples, the ternary Co-CNT/TiO2 samples showed much better photocatalytic activity. The sample calcined at 500 degrees C showed better reactivity, and the ideal cobalt dopant conce...
