A novel synthetic method for nanosized crystalline titania for use in the decomposition of dyes.
Photocatalytically active nanocrystalline titania particles were prepared using a hydrothermal process, by controlling the particle size and crystallinity. The crystalline structures and morphologies of the particles were characterized by X-ray diffraction and transmission electron microscopy. The BET method was used to determine the surface area and verify the grain size. To estimate the photocatalytic activity of the synthesized particles, a dye photodegradation experiment was carried out and the activity of the particles was compared with that of conventional titania. The results show that synthesized nanocrystalline titania particles had a higher photocatalytic activity than that of conventional titania. These findings provide a basis for the preparation of more effective and usef ul materials for use in AOP applications.
Yun
C Y
CY
School of Chemical Engineering, Seoul National University, Seoul 151-742, Republic of Korea. chaos117@snu.ac.kr
Moon
J
J
Chung
K
K
Kang
M
M
Shin
C B
CB
Choi
K
K
Yi
J
J
D002384:Catalysis; D004396:Coloring Agents / Q000737:chemistry* / Q000302:isolation & purification*; D036103:Nanotechnology; D010084:Oxidation-Reduction; D010316:Particle Size; D010777:Photochemistry; D013783:Textile Industry; D014025:Titanium / Q000737:chemistry*; D014873:Water Pollutants / Q000302:isolation & purification*
D004396:Coloring Agents; D014873:Water Pollutants; C009495:titanium dioxide; D014025:Titanium