Nanostructured N-doped TiO2 marigold flowers for an efficient solar hydrogen production from H2S

摘要: Nitrogen-doped TiO2 nanostructures in the form of marigold flowers have been synthesized for first time using a facile solvothermal method. The structural analysis has shown that such an N-doped system crystallizes anatase structure. optical absorption spectra clearly shift edge towards visible-light range, which indicates successful nitrogen doping. doping further confirmed by photoluminescence and photoemission spectroscopy. Microscopy studies thin nanosheets (petals) N–TiO2 with thickness ∼2–3 nm, assembled flower high surface area (224 m2 g−1). nanostructure is efficient photocatalyst decomposition H2S production hydrogen under solar light. maximum evolution obtained higher than other known systems. It noteworthy photohydrogen unique from abundant light hitherto unattempted. proposed synthesis method can also be utilized to design hierarchical nanostructured metal oxides.