engleski

Transmission electron microscopy of annealed titanate nanotubes for catalytic applications

Titanate nanostructures as a photocatalysts, based on one of the most important transition metal oxide, titanium - dioxide (TiO2) have high activity only under UV illumination. To date, TiO2 is still one of the most studied photocatalyst materials due to its abundance, low cost, low toxicity, superior photostability, and high intrinsiccatalytic activity under UV illumination. However, the photo-conversion efficiency of TiO2 is limited to less than 2.2% under AM 1.5 global solar illumination due to its large band gap energy (3.0 eV for rutile and 3.2 eV for anatase)2. The generally accepted benchmark for solar irradiation-to-energy efficiency under AM 1.5 global illumination is 10% for practical implementation. In order to expand their activity in the visible range of solar irradiation, nanostructures were doped with various metals and non-metals1. The aim of this research is to increase photocatalytic properties of titanate based nanostructures. We studied the influence of the temperature treatment of doped and undoped H2Ti3O7 in reductive atmosphere to morphology, phase transition and light absorption.

Titania nanotubes ; Functionalization ; Photocatalysis

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