Heterojunction Ag–TiO₂ Nanopillars for Visible‐Light‐Driven Photocatalytic H₂ Production

Abstract

Abstract Silver–titanium dioxide (Ag–TiO 2 ) heterojunction nanopillars were fabricated by a facile one‐pot method coupled with further calcinations. The results showed that Ag nanoparticles were well dispersed on the surface of TiO 2 nanopillars. The heterojunction composite nanopillars were uniform, approximately 10–20 μm in length and 500–800 nm in diameter. The nanojunctions and surface plasmon resonance effect of Ag–TiO 2 heterojunction nanopillars were confirmed by scanning electron microscopy, transmission electron microscopy, and UV/Vis spectroscopy. The heterojunction Ag–TiO 2 nanopillars showed good photocatalytic H 2 production activities under visible‐light irradiation without costly platinum, owing to the good dispersion and closely contacted junctions, as well as the surface plasmon resonance effect and the porous one‐dimensional structure.