An organometallic synthesis of TiO2 nanoparticles.
We report the synthesis of TiO2 nanoparticles that uses the low-temperature reaction of low-valent organometallic precursors. Bis(cyclooctatetraene)titanium reacts with dimethyl sulfoxide in organic solution at temperatures as low as room temperature to produce TiO2. In the absence of any supporting ligand, the reaction gives precipitation of amorphous TiO2 powder; however, in the presence of basic ligands such as tributylphosphine, tributylphosphine oxide and trioctylphosphine oxide, the precipitation is arrested, and chemically distinct, isolated, internally crystalline TiO2 nanoparticles are formed.
Tang
Jing
J
Department of Chemistry, Department of Applied Physics and Applied Mathematics, and Materials Research Science & Engineering Center, Columbia University, New York, New York 10027, USA.
Redl
Franz
F
Zhu
Yimei
Y
Siegrist
Theo
T
Brus
Louis E
LE
Steigerwald
Michael L
ML
D003460:Crystallization / Q000379:methods*; D008422:Materials Testing; D008670:Metals / Q000737:chemistry; D008968:Molecular Conformation; D036103:Nanotechnology / Q000379:methods*; D043942:Nanotubes / Q000032:analysis / Q000737:chemistry* / Q000648:ultrastructure*; D009930:Organic Chemicals / Q000737:chemistry; D011208:Powders; D014025:Titanium / Q000032:analysis / Q000737:chemistry*
D008670:Metals; D009930:Organic Chemicals; D011208:Powders; C009495:titanium dioxide; D014025:Titanium