Comparative examination of titania nanocrystals synthesized by peroxo titanic acid approach from different precursors.
Titanium dioxide nanocrystalline particles were synthesized by peroxo titanium acid (PTA) approach from titanium alkoxide and inorganic salt precursors, and their structural and surface properties, porosities, and photocatalytic activities were comparatively examined by XRD, TG/DTA, DRIFT, UV-vis, low temperature N(2) adsorption, and methyl orange (MO) degradation. It was found that nanoparticles with single anatase phase can be obtained from alkoxide precursor even near room temperature if synthesis conditions are appropriately controlled. PTA-derived anatase nanoparticles from titanium alkoxide precursor have smaller crystalline sizes and better porosities, and contain less amount of peroxo group and no organic impurities as compared to those from TiCl(4) precursor. The advantages in structural property, porosity, and surface properties (few deficiencies) lead to a much better photocatalytic activity for TiO(2) nanoparticles from titanium alkoxide precursor in comparison with those from TiCl(4) precursor.
Liu
Yong-Jun
YJ
Department of Environmental Science and Engineering, Sichuan University, Chengdu 610065, Sichuan, China.
Aizawa
Mami
M
Wang
Zheng-Ming
ZM
Hatori
Hiroaki
H
Uekawa
Naofumi
N
Kanoh
Hirofumi
H
D000327:Adsorption; D002384:Catalysis; D053768:Metal Nanoparticles / Q000737:chemistry*; D009584:Nitrogen; D010087:Oxides / Q000737:chemistry; D010777:Photochemistry; D013053:Spectrophotometry; D017550:Spectroscopy, Fourier Transform Infrared; D013816:Thermodynamics; D014025:Titanium / Q000737:chemistry*; D014961:X-Ray Diffraction
D010087:Oxides; C525208:peroxo-titanate; C009495:titanium dioxide; D014025:Titanium; D009584:Nitrogen