The main issue in this field is in fact the necessity of reducing the amount of precious metal catalyst and of finding protonic exchange polymeric membrane alternative to expensive NAFION. Fuel Cells for portable applications can take advantage from dry plasma technologies
Over the last decade, heterogeneuos photocatalysis has shown tremendous promise for the effective degradation of organic pollutants in water. Recently, immobilization of photocatalyst (e.g., TiO2 and ZnO) nanopowders on suitable substrates has attracted growing interest because it eliminates costly post-treatment separation processes and allows multiple catalyst recycling.
Oil/water separation materials have received considerable attention in recent years because of environmental problems associated with oily wastewater and oil spills.