Sungkyunkwan University Research & Business Foundation, Suwon, Gyeonggi-do, KR
Titanium dioxide is enormously consumed as white color of plastics and paint because of its high thermal-stablility and non-toxic properties. Also, its property as high-blocking ultraviolet rays can be applicable to optical materials, protective materials, and sensor materials. As its photocatalytic ability receives attentions recently, it is applied to antibacterial, waste water treatment, and air purification fields. But titanium dioxide has some problems when it used as photocatlysts. Titanium dioxide only absorbs ultraviolet ray(below 380nm). So, it is not effective indoors that is deficient-ultraviolet ray. Therefore, some research groups reduced the titanium dioxide for expanding absorption range. Although it can absorb light to the near-infrared region after reduction, procedures still have some disadvantages because of high pressure and high temperature condition. In contrast, this technology which is solution-based treatment with Lithium-ethylenediamine(Li-EDA), the strong reducing reagent in superbase, can selectively reduce TiO2 at room temperature and atmospheric pressure. By the facile treatment to commercial janus photocatlyst, Daegusa P-25, obtained partially reduced TiO2 nanoparticles show extended absorption range to near-infrared region (over 380nm) and high charge separation efficiency. And, the reduced TiO2 show high performance at hydrogen evolution reaction, algae disinfection and fine dust elimination.
Primary Application Area: Materials, Chemical
Technology Development Status: Proven Manufacturability
Technology Readiness Level: TRL 4
Organization Type: Academic/Gov Lab
Showcase Booth #: 305
GOVT/EXTERNAL FUNDING SOURCES