Synthesis of Nanostfuctured Reduced Titanium Oxide: Crystal Structure Transformation Maintaining Nanomorphology

摘要

There is an increasing need for the synthesis of nanostructured reduced oxides because of their attractive properties; for example, compared with titanium dioxide (TiO2), reduced titanium oxides are attractive for photovoltaics, photocatalysts, and fuel cells owing to their narrow band gap enabling absorption of visible light, chemical stability, and relatively high electrical conductivity, comparable to that of graphite. Generally, reduced titanium oxides have been synthesized by. 1) thermal reduction of TiO2 at about 1000 °C with H2 gas or Ti powder, 2) photochemical reduction of TiO2 with UV laser irradiation, or 3) direct synthesis from unique precursors or using laser ablation techniques.