Nickel-Doped Excess Oxygen Defect Titanium Dioxide
for Efficient Selective Photocatalytic Oxidation of Benzyl Alcohol
Houde She
Hua Zhou
Liangshan Li
Lei Wang
Jingwei Huang
Qizhao Wang
10.1021/acssuschemeng.8b02217.s001
https://acs.figshare.com/articles/journal_contribution/Nickel-Doped_Excess_Oxygen_Defect_Titanium_Dioxide_for_Efficient_Selective_Photocatalytic_Oxidation_of_Benzyl_Alcohol/6885014
In
this study, a novel composite Ni-OTiO<sub>2</sub> was prepared
by doping nickel and introducing excess oxygen defects in TiO<sub>2</sub>. The as-synthesized Ni-OTiO<sub>2</sub> particles were characterized
by scanning electron microscopy, X-ray
diffractino, transmission
electron microscopy, Fourier
transform infrared spectroscopy, differential
reflectance spectroscopy, photoluminescence, photoelectrochemistry,
and X-ray photoelectron spectroscopy.
When employing Ni (1%)-OTiO<sub>2</sub> as photocatalyst, the conversion
of benzyl alcohol (BA) was up to 93% by 1 h irradiation derived from
a 300 W xenon lamp, which is ∼8-times
higher than that using pure TiO<sub>2</sub>. Moreover, while being
irradiated with the
300 W xenon lamp (using a filter, λ > 420 nm), the Ni (1%)-OTiO<sub>2</sub> conducted photocatalytic system can give 86% conversion of
BA to benzaldehyde within
1 h. Specifically, during photocatalysis, a peroxo group and nickel
ion act as the electron carrier, promoting the separation of the electron–hole
pair. It is considered that the highly improved photocatalytic ability
after modification of pure TiO<sub>2</sub> is ascribable to the synergistic
effect of excess oxygen defects and nickel doping in TiO<sub>2</sub>.
2018-07-19 00:00:00
BA
300 W xenon lamp
Oxygen Defect Titanium Dioxide
1 h irradiation
as-synthesized Ni-OTiO 2 particles
oxygen defects
nickel ion act
doping
transmission electron microscopy
the 300 W xenon lamp
conversion
TiO 2
benzaldehyde within 1 h
X-ray photoelectron spectroscopy
photocatalytic