An efficient bismuth tungstate visible-light-driven photocatalyst for breaking down nitric oxide.
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 (Bi(2)WO(6)) microspheres. A facile microwave-assisted hydrothermal method involving bismuth nitrate and sodium wolframate was developed to synthesize the photocatalyst. The Bi(2)WO(6) 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 Bi(2)WO(6) microspheres are effective visible-light-driven photocatalytic functional materials for air purification.
Li
Guisheng
G
Department of Chemistry, Shanghai Normal University, Shanghai 200234, China. lgscuhk@yahoo.com
Zhang
Dieqing
D
Yu
Jimmy C
JC
Leung
Michael K H
MK
D001729:Bismuth / Q000737:chemistry*; D002384:Catalysis; D008855:Microscopy, Electron, Scanning; D046529:Microscopy, Electron, Transmission; D009569:Nitric Oxide / Q000737:chemistry*; D010777:Photochemistry; D014414:Tungsten / Q000737:chemistry*; D014961:X-Ray Diffraction
D009569:Nitric Oxide; D001729:Bismuth; D014414:Tungsten