Functionalization of cotton by RGO/TiO2 to enhance photodegradation of rhodamine B under simulated solar irradiation

S. Landi Jr. expresses his gratitude to the Brazilian Coordenacao de Aperfeicoamento de Pessoal de Nivel Superior (CAPES) for sporting his Doctoral Fellowship performed in Physics Centre at University of Minho. J. Molina wishes to thank the Spanish Ministerio de Ciencia e Innovacion (contract CTM2011-23583) for the financial support. Moreover, the authors still want to thank the Portuguese Foundation for Science and Technology (FCT) for its contribution in financial support of this research work.