Journal
INORGANIC CHEMISTRY
Volume 51, Issue 11, Pages 6245-6250Publisher
AMER CHEMICAL SOC
DOI: 10.1021/ic300454q
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Funding
- National Natural Science Foundation of China [20977016, U1033603]
- National Basic Research Program of China (973 Program) [2011CB612314]
- Program for Changjiang Scholars and Innovative Research Team in University [PCSIRT0818]
- NSF for Fujian Province [2009J06004]
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Bi2WO6 hollow microspheres with dimension of ca. 1.5 mu m were synthesized via a hydrothermal method using polystyrene particles as the template. The as-prepared Bi2WO6 hollow microspheres can be further transformed to double-shell Bi2O3/Bi2WO6 hollow microspheres. The samples were fully characterized by X-ray diffraction, scanning electron microscopy, transmission electron microscopy (TEM), high-resolution TEM, N-2-sorption Brunauer-Emmett-Teller surface area, UV-vis diffuse-reflectance spectroscopy, and X-ray photoelectron spectroscopy. The as-formed double-shell Bi2O3/Bi2WO6 hollow microspheres exhibit enhanced photocatalytic activity due to the hollow nature and formation of the p-n junction between p-type Bi2O3 and n-type Bi2WO6. The study provides a general and effective method in the fabrication of composition and dimension-tunable composite hollow microspheres with sound heterojunctions that may show a variety of applications.
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