An efficient bismuth tungstate visible-light-driven photocatalyst for breaking down nitric oxide

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review

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Author(s)

Detail(s)

Original languageEnglish
Pages (from-to)4276-4281
Journal / PublicationEnvironmental Science and Technology
Volume44
Issue number11
Publication statusPublished - 1 Jun 2010
Externally publishedYes

Abstract

This paper reports a photocatalytic removal of 400 ppb level of NO in air under visible light irradiation by utilizing three-dimensional (3D) hierarchical bismuth tungstate (Bi2WO6) microspheres. A facile microwave-assisted hydrothermal method involving bismuth nitrate and sodium wolframate was developed to synthesize the photocatalyst. The Bi 2WO6 samples were characterized by using X-ray diffraction (XRD), Brunauer-Emmett-Teller (BET), transmission electron microscopy (TEM), field emission scanning electron microscopy (FESEM), X-ray photoelectron spectroscopy (XPS), Raman and ultraviolet-visible reflectance (UV-vis) spectroscopy. The relationship between the physicochemical property and the photocatalytic performance of the as prepared samples is discussed. The present work demonstrates that the 3D hierarchical Bi2WO6 microspheres are effective visible-light-driven photocatalytic functional materials for air purification. © 2010 American Chemical Society.

Citation Format(s)

An efficient bismuth tungstate visible-light-driven photocatalyst for breaking down nitric oxide. / Li, Guisheng; Zhang, Dieqing; Yu, Jimmy C. et al.
In: Environmental Science and Technology, Vol. 44, No. 11, 01.06.2010, p. 4276-4281.

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review