Paula Ribao Martínez defended her doctorate thesis “Design of TiO2-based materials for photocatalytic environmental applications”, developed in the Chemical & Biomolecular Engineering Department of the University of Cantabria with the supervision of Prof. Inmaculada Ortiz and Dr. María José Rivero. The event took place on September 28th, 2018. The evaluation committee was formed by Prof. Dr. Raquel Ibañez (University of Cantabria); Dr. Jose Antonio Casas (Autonomous University of Madrid) and Dr. Jose Alcides (Universidade de Trás-os-Montes e Alto Douro, Portugal).