New synthesis of excellent visible-light TiO{sub 2-x}N{sub x} photocatalyst using a very simple method

Journal Article · Sat Sep 15 00:00:00 EDT 2007 · Journal of Solid State Chemistry

OSTI ID:21043850

Hanjie, Huang; Xu, Chen; Zhixin, Chen; Wenjuan, Li; Dong, Ye ^[1]

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1. Research Institute of Photocatalysis, State Key Laboratory Breeding Base of Photocatalysis, Fuzhou University, Fuzhou, 350002 (China)

An excellent visible-light-responsive (from 400 to 550 nm) TiO{sub 2-x}N{sub x} photocatalyst was prepared by a simple wet method. Hydrazine was used as a new nitrogen resource in this paper. Self-made amorphous titanium dioxide precursor powders were dipped into hydrazine hydrate, and calcined at low temperature (110 deg. C) in the air. The TiO{sub 2-x}N{sub x} was successfully synthesized, following by spontaneous combustion. The photocatalyst was characterized by X-ray diffraction (XRD), Brunauer-Emmett-Teller (BET), transmission electron microscope (TEM), UV-Vis diffuse reflectance spectrometer (DRS), and X-ray photoelectron spectroscopy (XPS). Analysis of XPS indicated that N atoms were incorporated into the lattice of the titania crystal during the combustion of hydrazine on the surface of TiO{sub 2}. Ethylene was selected as a target pollutant under visible-light excitation to evaluate the activity of this photocatalyst. The newly prepared TiO{sub 2-x}N{sub x} photocatalyst with strong photocatalytic activity and high photochemical stability under visible-light irradiation was firstly demonstrated in the experiment. - Graphical abstract: The excellent visible-light-responsive (from 400 to 550 nm) TiO{sub 2-x}N{sub x} photocatalyst was prepared by a simple wet method. Hydrazine was used as a new nitrogen resource in this paper. In the experiment, a strong photocatalytic activity with high photochemical stability under visible-light irradiation was demonstrated.

• OSTI ID: 21043850
• Journal Information: Journal of Solid State Chemistry, Vol. 180, Issue 9; Other Information: DOI: 10.1016/j.jssc.2007.07.009; PII: S0022-4596(07)00287-3; Copyright (c) 2007 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved; Country of input: International Atomic Energy Agency (IAEA); ISSN 0022-4596
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC
ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
ETHYLENE
HYDRATES
HYDRAZINE
IRRADIATION
PHOTOCATALYSIS
PHOTOCHEMISTRY
SPECTROMETERS
SPONTANEOUS COMBUSTION
TEMPERATURE RANGE 0273-0400 K
TITANIUM OXIDES
TRANSMISSION ELECTRON MICROSCOPY
VISIBLE RADIATION
X-RAY DIFFRACTION
X-RAY PHOTOELECTRON SPECTROSCOPY