Journal
CRYSTENGCOMM
Volume 14, Issue 12, Pages 4217-4222Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c2ce06684j
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Funding
- Hunan Provincial Natural Science Foundation of China [10JJ1003]
- NSFC [20873038, J0830415, E50725825]
- program for New Century Excellent Talents in Universities [NCET-10-0371]
- Fundamental Research Funds for the Central Universities
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Monoclinic bismuth vanadate (m-BiVO4) with novel hollow peanut-like morphology was synthesized for the first time using L-lysine as surfactant. The use of L-lysine and the crystallization procedure is indispensable in getting the peanut-like morphology. The photocatalytic activity of the m-BiVO4 samples under solar-light irradiation was evaluated for degradation of crystal violet and methylene blue. Crystallization and calcination temperature are important factors affecting the photocatalytic activity of m-BiVO4, and best performance was observed over the sample that crystallized at 160 degrees C in the presence of L-lysine and subsequently subjected to calcination at 550 degrees C. The as-prepared BiVO4 showed good stability in catalyst recycling. Based on the results of XRD, XPS, FESEM, TEM (HRTEM), UV-vis diffuse reflectance spectroscopy, and N-2 adsorption-desorption characterization, the good photocatalytic activity of the m-BiVO4 sample is attributed to its unique hollow peanut-like morphology and pure monoclinic phase of high crystallinity.
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