期刊
APPLIED SURFACE SCIENCE
卷 280, 期 -, 页码 693-697出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.apsusc.2013.05.044
关键词
Degradation; Doping; Nanoparticles; Solvothermal method; Ceria
类别
资金
- National Science Foundation of China [NSFC50974007]
- Scientific Research Starting Foundation for Returned Overseas Chinese Scholars, Ministry of Education
- Start-Up Fund for High-End Returned Overseas Talents [411]
- Ministry of Human Resources and Social Security, China
- Lab-Installation Foundation of Beihang University
Azo dyes are an abundant class of synthetic dyes, however their complex structure makes them difficult to biologically degrade. We sought to degrade acid orange 7 (AO7) using nitrogen-doped nano-CeO2, which is a promising alternative photocatalyst to nitrogen-doped TiO2. Nitrogen-doped monocrystalline CeO2 nanoparticles with various nitrogen contents were synthesized solvothermally at 120 degrees C from Ce(NO3)(3).6H(2)O, triethanolamine, and ethanol. The CeO2 monocrystals were between 7 and 8 nm in diameter. Nitrogen was shown to be incorporated into CeO2 lattice from the results of the lattice parameter calculations, X-ray photoelectron spectroscopy analysis and elemental analysis. The degradation of AO7 in water was investigated using a domestic 10 W compact fluorescent lamp. The degradation efficiency of AO7 by monocrystalline CeO2 increased with increasing nitrogen content, reaching 97.6% for the sample with a N:Ce molar ratio of 0.3. (C) 2013 Elsevier B.V. All rights reserved.
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