Journal
MATERIALS SCIENCE IN SEMICONDUCTOR PROCESSING
Volume 25, Issue -, Pages 27-33Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.mssp.2013.09.020
Keywords
Photocatalytic activity; Cerium dioxide; N-doped CeO2; Methylene blue
Categories
Funding
- National Natural Science Foundation of China [21071107, 51002016, 21103119]
- Collegiate Natural Science Fund of Jiangsu Province [09KJB30003, 11KJB430012]
- Key Laboratory for Environment Functional Materials of Suzhou [SZS201008]
- Priority Academic Program Development of Jiangsu Higher Education Institutions (PAPD)
- Industrial Support Project of Suzhou [SG201138]
- Jiangsu Key Laboratory of Material Tribology [Kjsmcx2011001]
- Jiangsu Key Laboratory for Photon Manufacturing [GZ201111]
- Creative Project of Postgraduate of Jiangsu Province [CXLX12_0635, 856]
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Porous CeO2 spheres were fabricated through mineralizing lotus flower pollen template via a cerium nitrate infiltration. The resulting products were characterized by FESEM, HRTEM, XRD, nitrogen adsorption, and UV-vis diffuse reflectance spectroscopy. The as-prepared photocatalyst exhibited a large surface area and multiple pore size distribution, which could effectively increase the reaction area and allow better catalytic capability. Surface oxygen activity was enhanced for the biomorphic ceria spheres, as was revealed by XPS measurements. The formation mechanism of hierarchical cerium dioxide microspheres was proposed. Moreover, the synthesized ceria shows high photocatalytic activity and exhibits remarkable ability to remove methylene blue under solar irradiation, suggesting they are promising photocatalyst for wastewater treatment. (C) 2013 Elsevier Ltd. All rights reserved.
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