Reconciling human development and environment preservation is one of the most difficult problem researchers will face in the coming years. This will be all the more difficult with the need to shift from fossil fuel use to renewable energies such as solar energy, find alternatives for rare elements and manage resources in a more sustainable way. In this project, we propose to explore the photocatalytic properties of low price and environmental-friendly alumino-silicate nanotubes, i.e. imogolites, to trigger unfavorable redox reactions on both sides of the hybrid imogolite wall, taking advantage of confinement inside the cavity and of the polarization of the wall. A specificity, and the originality, of this project is that under confinement in a nanoreactor, the majority of the molecules are under the influence of structurally controlled interactions that can modify chemical reactions in a way inaccessible in the bulk phase. The project will in particular try to evaluate the role of the curvature-induced polarization for the separation of charge through the wall of imogolites and to control interfaces and interactions at the nanometer scale to obtain original properties. To meet these objectives and fully exploit the remarkable properties of these still little-known materials, several challenges will be faced in the BENALOR project. First, it is necessary to prepare and characterize organic/inorganic hybrid imogolites able to host, organize and transform the desired organic reactants in their internal cavity by tuning the size, the functionalization groups in the cavity as well as the wall composition. The synthesis will be optimized both at the laboratory and at larger scale. This will be the aim of the first work package (WP1). Secondly, the encapsulation efficiency, the related thermodynamics in correlation with the internal arrangement of the organic substrates have to be finely understood (WP2) to fully optimize the targeted catalytic properties. Finally, to assess the dual reactivity specific to imogolite-based tubular nanoreactors, the synergetic integration of an oxidation reaction (decomposition of an organic pollutant) inside the tube will be coupled to a reduction reaction at the outer surface (WP3). Several reactions have been selected with increasing challenge: light-induced reduction of metal ions at the external surface, water and carbon dioxide reduction. To tackle these challenges, the project joins the efforts of 3 academic partners (i.e. NIMBE, ITODYS and ICGM) with highly recognized and complementary expertise in material, surface and interface science as well as reactivity. NIMBE laboratory, which has already been the investigator of different projects on imogolites and has installed a facility for large scale synthesis of these materials, will coordinate the project (WP 0). One PhD student, one post-doc and six Master students will also contribute to this study, and the 48 months project will gather nearly 20 permanent and non- permanent researchers. Coupling hydrophilic/hydrophobic redox reactions in a nanoreactor is very unique and the development of the hybrid materials presented may open an avenue of new possible photoinduced reactions. The realization of this project is expected to have a very strong impact not only on the understanding of reactivity in confined systems, as well as in the field of photocatalysis for environmental and energy applications.