Journal
MATERIALS LETTERS
Volume 77, Issue -, Pages 25-28Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.matlet.2012.02.127
Keywords
Bi2SiO5; Electron microscopy; Porous materials; Hierarchical; Solvothermal; Cr(VI) removal
Funding
- National Natural Science Foundation of China [21171136, 20801043]
- Program for New Century Excellent Talents in University [NCET-09-0136]
- Wuhan Science and Technology Bureau [201171034320, 201070934342]
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Uniform sponge-like Bi2SiO5 hierarchical nanostructures were successfully prepared via a facile and template-free solvothermal method at 150 degrees C for 6 h in ethylene glycol. The product was characterized by powder X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM), energy-dispersive X-ray microanalysis (EDX), nitrogen adsorption and UV-vis diffuse reflectance spectroscopy (DRS). The as-synthesized sponge-like Bi2SiO5 hierarchical nanostructures built up from loosely-packed thin nanoflakes possessed large BET surface area and pore volume. It also exhibited excellent Cr(VI) adsorption performance, demonstrating a promising application in wastewater treatment. The as-prepared sponge-like Bi2SiO5 hierarchical nanostructures also showed similar optical property and band gap compared with TiO2, indicating that it could be used as a potential photocatalyst. (C) 2012 Elsevier B.V. All rights reserved.
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