Effect of HNO3 Concentration on the Morphologies and Properties of Bi2WO6 Photocatalyst Synthesized by a Hydrothermal Method

Wenjie Wang, Minna Guo, Dongliang Lu, Weimin Wang, Zhengyi Fu
2016 Crystals  
Bi 2 WO 6 samples were prepared by a hydrothermal method using Bi(NO 3 ) 3¨5 H 2 O and Na 2 WO 4¨2 H 2 O as raw materials. X-ray diffraction (XRD), field-emission scanning electron microscopy (FESEM), Raman and Brunauer-Emmett-Teller (BET) were employed for sample characterization. The photocatalytic activity of the samples was evaluated by the degradation of Rhodamine B under visible-light irradiation. The photocatalytic activity of Bi 2 WO 6 , as well as the effect of varying HNO 3
more » ... ng HNO 3 concentrations on the morphologies of Bi 2 WO 6 , was investigated. The HNO 3 concentration significantly affected the structure and morphology of the Bi 2 WO 6 . The photocatalytic performance varied with the structure, morphology, and surface area of the Bi 2 WO 6 samples. The results indicated that the H10 sample exhibits uniform morphology and excellent photocatalytic performance; using this sample, the degradation of Rhodamine B reached 96% in 90 min under visible-light irradiation.
doi:10.3390/cryst6070075 fatcat:skks2o3tlfesxd6jjb6c4347ce