期刊
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
卷 19, 期 14, 页码 9392-9401出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/c7cp01007a
关键词
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资金
- National Natural Science Foundation of China [21376061]
- Natural Science Foundation for Distinguished Young Scholar of Hebei Province [B2015208010]
- Foundation for the Returned Overseas Chinese Scholars of Hebei Province [CL201609]
- Scientific Research Foundation for High-Level Talent in University of Hebei Province [GCC2014057]
The development of inexpensive visible-light-driven photocatalysts is an important prerequisite for realizing the industrial application of photocatalysis technology. In this paper, an earth-abundant FeAl2O4 photocatalyst is prepared via facile solution combustion synthesis. Density functional theory and the scanning Kelvin probe technique are employed to ascertain the positions of the energy bands and the Fermi level. Phenol is taken as a model pollutant to evaluate the photocatalytic activity of FeAl2O4. The scavenger experiment results, center dot OH-trapping fluorescence technique, and electron spin resonance measurements confirm that the superoxide anion radical is the main active species generated in the photocatalytic process, which also further corroborates the proposed electronic structure of FeAl2O4. The degradation experiments and O-2 temperature programmed desorption results over various samples verify that the crystallinity degree is a more important factor than the oxygen adsorption ability in determining photocatalytic activity.
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