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With increasingly stringent environmental regulations, the removal of nitrogen-containing compounds (NCCs) from gasoline fuel has become a more and more important research subject. In this work, we have successfully synthesized TiO2/alpha-Fe2O3 heterogeneous photocatalysts with different mass ratios of TiO(2)vs.alpha-Fe2O3. Taking photocatalytic denitrification of typical alkali NCCs, pyridine, in gasoline fuel under visible light irradiation (lambda >= 420 nm) as the model reaction, the TiO2/alpha-Fe2O3 hybrids have exhibited enhanced photocatalytic activity compared with pure TiO2 and alpha-Fe2O3, giving a pyridine removal ratio of similar to 100% after irradiation for 240 min. The improved photocatalytic performance can be attributed to the integrative effect of the enhanced light absorption intensity and more efficient separation of photogenerated electron-hole pairs. Importantly, this type of heterogeneous photocatalysts can be easily separate in the reaction medium by an external magnetic field that is very important for industrial purpose. In addition, major reaction intermediates have been identified by the liquid chromatograph-mass spectrometer (HPLC-MS) and a tentative photocatalytic denitrification mechanism has been proposed.
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SCIENTIFIC REPORTS
ISSN: 2045-2322
Year: 2017
Volume: 7
4 . 1 2 2
JCR@2017
3 . 8 0 0
JCR@2023
ESI Discipline: MULTIDISCIPLINARY;
ESI HC Threshold:297
JCR Journal Grade:1
CAS Journal Grade:3
Cited Count:
WoS CC Cited Count: 41
SCOPUS Cited Count: 49
ESI Highly Cited Papers on the List: 0 Unfold All
WanFang Cited Count:
Chinese Cited Count:
30 Days PV: 1
Affiliated Colleges: