The research purpose of PHOCSCLEEN is to investigate a number of photo-catalytic oxide nanomaterials, classify them and produce new composite materials with tailored properties. Selected materials will be investigated in the light of application aimed to environmental clean-up and water splitting for hydrogen production. By exploiting the complementarities of partners, the following goals will be reached:1. Improvement of the technical knowledge in the area, achieved thanks to a systematic characterization of the properties and processing of photo-catalytic oxide nanomaterials, and by investigating and optimizing the integration schemes of optical energy sources within the photocatalytic reactor,2. Increase of the cooperation among the participating institutions and, more in general, between Europe, Canada and Mexico in this area; besides the support to the joint research among senior researchers (ERs), this will be achieved by training young researchers (ESRs) not only from a scientific point of view, but also enhancing their ability to work within an international team combining expertise coming from different research centers;3. Support to and ease of the transfer of the existing expertise from one partner to another, both in terms of knowledge, and in terms of expertise on tools and processes. Eventually this will lead to the creation of a structured network of institutions cooperating in this area. This will also include the transfer of know-how in project setup and management to allow for the construction of a stronger management base to better define and guide future EU projects on the mentioned research area.