Cnt Sponges for Environmental Applications -- Electrolytic Conversion of Co2 to Carbon Nanostructures -- Tio2/Cnt Nanocomposites for Water Splitting Applications -- Tio2 Nanotubes as Photocatalyst for Biodiesel Production -- Metal Decoration of Tio2 Nanotubes for Photocatalytic and Water Splitting Applications -- Organic-Inorganic Hybrid Perovskites for Solar Cells Applications -- Rare-Earth Doped Forsterite: Anti-Reflection Coating with Upconversion Properties as Solar Capture Solution -- Chitin Adsorbents to Wastewater Treatment -- Application of Ferrite Nanoparticles In Wastewater Treatment -- Synthesis of Potassium Niobate (Knbo3) for Environmental Applications -- Nano Magnetite Based Magnetic Glass-Ceramic Obtained from Wastes.