Carbon Nitrogen Co-Doped P25: Parameter Study on Photodegradation of Reactive Red 4M. S. Azami, W. I. Nawawi, M. A. M. Ishak, K. Ismail, Z. Ahmad and Ali H. JawadMATEC Web of Conferences, 47 (2016) 05018DOI: https://doi.org/10.1051/matecconf/20164705018