Solvothermal synthesis and photoreactivity of anatase TiO(2) nanosheets with dominant {001} facets.
Owing to wide-ranging industrial applications and fundamental importance, tailored synthesis of well-faceted single crystals of anatase TiO(2) with high percentage of reactive facets has attracted much research interest. In this work, high-quality anatase TiO(2) single-crystal nanosheets mainly dominated by {001} facets have been prepared by using a water-2-propanol solvothermal synthetic route. The synergistic functions of 2-propanol and HF on the growth of anatase TiO(2) single-crystal nanosheets were studied by first-principle theoretical calculations, revealing that the addition of 2-propanol can strengthen the stabilization effect associated with fluorine adsorption over (001) surface and thus stimulate its preferred growth. By measuring the (*)OH species with terephthalic acid scavenger, the as-prepared anatase TiO(2) single-crystal nanosheets having 64% {001} facets show superior photoreactivity (more than 5 times), compared to P25 as a benchmarking material.
Yang
Hua Gui
HG
The University of Queensland, ARC Centre of Excellence for Functional Nanomaterials.
Liu
Gang
G
Qiao
Shi Zhang
SZ
Sun
Cheng Hua
CH
Jin
Yong Gang
YG
Smith
Sean Campbell
SC
Zou
Jin
J
Cheng
Hui Ming
HM
Lu
Gao Qing Max
GQ
D003460:Crystallization; D049329:Nanostructures / Q000737:chemistry*; D055668:Photochemical Processes; D012997:Solvents; D013696:Temperature; D014025:Titanium / Q000737:chemistry*
D012997:Solvents; C009495:titanium dioxide; D014025:Titanium