A Study on RR4 Dye as a Sensitizer in Enhancing Photoactivity of Immobilized PhotocatalystsF. Bakar, M. S. Azami, S. K. Ain, R. Zaharudin and W. I. NawawiMATEC Web of Conferences, 47 (2016) 05020DOI: https://doi.org/10.1051/matecconf/20164705020