Polymeric Electrolyte Membrane Photoelectrochemical (PEM-PEC) Cell with a Web of Titania Nanotube Arrays as Photoanode and Gaseous ReactantsM.N. Tsampas, T. Stoll and G. ZafeiropoulosE3S Web Conf., 16 (2017) 09005DOI: https://doi.org/10.1051/e3sconf/20171609005