Voids in walls of mesoporous TiO2 anatase nanotubes by controlled formation and annihilation of protonated titanium vacancies. - Getz, Marit Norderhaug; Chatzitakis, Athanasios; Liu, Xin; Carvalho, Patricia Almeida; Bjørheim, Tor Svendsen; Norby, Truls (Materials Chemistry & Physics, 2020)