Hydrothermal synthesis of hierarchical rose-like Bi2WO6 microspheres with high photocatalytic activities under visible-light irradiation

作者：He, Jinyun^*; Wang, Weimin; Long, Fei; Zou, Zhengguang; Fu, Zhengyi; Xu, Zhe

来源：Materials Science and Engineering B-Solid State Materials for Advanced Technology, 2012, 177(12): 967-974.

DOI：10.1016/j.mseb.2012.04.018

• Nanostructures
• Hydrothermal synthesis
• Bismuth tungstate
• Visible-light-driven photocatalyst
• Organic dye photodegradation

Hierarchical rose-like Bi2WO6 photocatalyst was successfully synthesized through a simple hydrothermal route using thiourea and acetic acid as complexing agents. The as-synthesized product was determined as pure orthorhombic Bi2WO6 based on the results of X-ray diffraction (XRD) and X-ray photoelectron spectroscopy (XPS) measurements. The photocatalyst had an average diameter of 2-3 mu m and it was constructed by many nanoflakes. The surfaces of these nanoflakes were coarse and had many nanocrystals on them. The hierarchical rose-like structure was formed through a typical hierarchical assembly process with the synergistic action of acetic acid and thiourea. The photocatalyst showed excellent visible-light-driven photocatalytic performance, it could decompose rhodamine B(RhB) within 50 min. This excellent performance resulted from its special microstructure and the relatively large surface area.

• 出版日期2012-7-25
• 单位桂林理工大学; 材料复合新技术国家重点实验室; 武汉理工大学