Efficient photocatalytic removal of nitric oxide with hydrothermal synthesized Na0.5Bi0.5TiO3nanotubes

Zhihui Ai; Gang Lu; Shuncheng Lee

doi:10.1016/j.jallcom.2014.06.039

Efficient photocatalytic removal of nitric oxide with hydrothermal synthesized Na_0.5Bi_0.5TiO₃nanotubes

Zhihui Ai, Gang Lu, Shuncheng Lee

Research output: Journal article publication › Journal article › Academic research › peer-review

28 Citations (Scopus)

Abstract

In this study, Na0.5Bi0.5TiO3nanotubes were synthesized with a facile hydrothermal method using TiO2P25 (Degussa) and bismuth citrate (BiC5H6O7) as precursors in concentrated NaOH and ammonia alkali solution. The samples were systematically characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM), and X-ray photoelectron spectroscopy (XPS). The as-prepared Na0.5Bi0.5TiO3nanotubes exhibited superior activity for photocatalytic removal of gaseous nitric oxide (NO) over TiO2P25 (Degussa) under simulated solar-light irradiation, the NO removal rate can reach as high as ca. 200 ppb·min-1over the Na0.5Bi0.5TiO3nanotubes in a continuous reactor with an initial NO concentration of 400 ppb. The intrinsic hollow-nanotube structure of the Na0.5Bi0.5TiO3photocatalysts contributes to its superior activity under simulated solar light. This work provides a facile route to prepare Na0.5Bi0.5TiO3nanotubes and suggests that the Na0.5Bi0.5TiO3nanotubes are ideal candidates for efficient removal of nitric oxide in indoor/outdoor air.

Original language	English
Pages (from-to)	260-266
Number of pages	7
Journal	Journal of Alloys and Compounds
Volume	613
DOIs	https://doi.org/10.1016/j.jallcom.2014.06.039
Publication status	Published - 15 Nov 2014

Keywords

Hydrothermal method
Photocatalysis
Solar light

ASJC Scopus subject areas

Mechanics of Materials
Mechanical Engineering
Metals and Alloys
Materials Chemistry

More information

10.1016/j.jallcom.2014.06.039

Cite this

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title = "Efficient photocatalytic removal of nitric oxide with hydrothermal synthesized Na0.5Bi0.5TiO3nanotubes",

abstract = "In this study, Na0.5Bi0.5TiO3nanotubes were synthesized with a facile hydrothermal method using TiO2P25 (Degussa) and bismuth citrate (BiC5H6O7) as precursors in concentrated NaOH and ammonia alkali solution. The samples were systematically characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM), and X-ray photoelectron spectroscopy (XPS). The as-prepared Na0.5Bi0.5TiO3nanotubes exhibited superior activity for photocatalytic removal of gaseous nitric oxide (NO) over TiO2P25 (Degussa) under simulated solar-light irradiation, the NO removal rate can reach as high as ca. 200 ppb·min-1over the Na0.5Bi0.5TiO3nanotubes in a continuous reactor with an initial NO concentration of 400 ppb. The intrinsic hollow-nanotube structure of the Na0.5Bi0.5TiO3photocatalysts contributes to its superior activity under simulated solar light. This work provides a facile route to prepare Na0.5Bi0.5TiO3nanotubes and suggests that the Na0.5Bi0.5TiO3nanotubes are ideal candidates for efficient removal of nitric oxide in indoor/outdoor air.",

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AU - Lee, Shuncheng

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AB - In this study, Na0.5Bi0.5TiO3nanotubes were synthesized with a facile hydrothermal method using TiO2P25 (Degussa) and bismuth citrate (BiC5H6O7) as precursors in concentrated NaOH and ammonia alkali solution. The samples were systematically characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM), and X-ray photoelectron spectroscopy (XPS). The as-prepared Na0.5Bi0.5TiO3nanotubes exhibited superior activity for photocatalytic removal of gaseous nitric oxide (NO) over TiO2P25 (Degussa) under simulated solar-light irradiation, the NO removal rate can reach as high as ca. 200 ppb·min-1over the Na0.5Bi0.5TiO3nanotubes in a continuous reactor with an initial NO concentration of 400 ppb. The intrinsic hollow-nanotube structure of the Na0.5Bi0.5TiO3photocatalysts contributes to its superior activity under simulated solar light. This work provides a facile route to prepare Na0.5Bi0.5TiO3nanotubes and suggests that the Na0.5Bi0.5TiO3nanotubes are ideal candidates for efficient removal of nitric oxide in indoor/outdoor air.

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