Synthesis of hierarchical rose bridal bouquet- and humming-top-like TiO2 nanostructures and their shape-dependent degradation efficiency of dye.
Novel hierarchical rose bridal bouquet- and humming-top-like nanostructured TiO(2) were successfully prepared by the simple process with the hydrothermal temperature as the morphology-controlling factor. The gradual transformation from layered titanate to brookite phase was well consistent with the formation mechanism of the hierarchical morphologies. The three-dimensional flower bouquets built from the bunches of roses with surrounding fern fronds displayed the best adsorptivity and completely degraded methylene blue within 60 min under UV irradiation, whereas the humming-top geometry composed of anisotropically elongated spindle-like crystallites was detrimental to the dye photodegradation.
School of Chemical Engineering and Bioengineering, University of Ulsan, Nam-gu, Ulsan, South Korea.
Thuy-Duong
TD
Nguyen-Phan
Eui Jung
EJ
Kim
Sung Hong
SH
Hahn
Woo-Jae
WJ
Kim
Eun Woo
EW
Shin
D002384:Catalysis / Q000528:radiation effects; D004791:Enzyme Inhibitors / Q000378:metabolism*; D008751:Methylene Blue / Q000378:metabolism*; D015394:Molecular Structure; D049329:Nanostructures / Q000737:chemistry*; D010782:Photolysis / Q000528:radiation effects; D013696:Temperature; D014025:Titanium / Q000737:chemistry / Q000378:metabolism*; D014466:Ultraviolet Rays; D014961:X-Ray Diffraction
D004791:Enzyme Inhibitors; C009495:titanium dioxide; D014025:Titanium; D008751:Methylene Blue