期刊
MATERIALS LETTERS
卷 65, 期 21-22, 页码 3330-3332出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.matlet.2011.02.028
关键词
Photocatalytic property; Nanoporous particles; Aerosol self-assembly; TiO2/SiO2 composite particles
资金
- Korea Institute of Geoscience and Mineral Resources (KIGAM)
- Ministry of Knowledge Economy
Nanoporous TiO2/SiO2 composite micro-particles were prepared by an aerosol assisted co-assembly (AACA) and their characteristics were investigated for photocatalytic application. The average diameter of resulting co-assembled TiO2/SiO2 particles was ranged 4-10 mu m, and increased as the precursor concentration increased. The TiO2/SiO2 particles were spherical in shape and pores ranged 1-100 nm in diameter. Photocatalytic activity of the as-prepared nanoporous TiO2/SiO2 particles was evaluated by measuring the photodegradation of methylene blue (MB) and NOx. Furthermore, the photocatalytic activity of nanoporous TiO2/SiO2 particles was compared with those of commercial TiO2 nanoparticles and nanoporous TiO2 particles. The nanoporous TiO2/SiO2 particles exhibited the highest photodegradation of MB and NOx among three samples, which was 80% after 3 h and 55% at 10 min, respectively. (C) 2011 Elsevier B.V. All rights reserved.
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