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Enhanced Photocatalytic Fuel Denitrification over TiO2/?-Fe2O3 Nanocomposites under Visible Light Irradiation.

ABSTRACT: 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/?-Fe2O3 heterogeneous photocatalysts with different mass ratios of TiO2 vs. ?-Fe2O3. Taking photocatalytic denitrification of typical alkali NCCs, pyridine, in gasoline fuel under visible light irradiation (????420?nm) as the model reaction, the TiO2/?-Fe2O3 hybrids have exhibited enhanced photocatalytic activity compared with pure TiO2 and ?-Fe2O3, giving a pyridine removal ratio of ?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.

SUBMITTER: Huang R 

PROVIDER: S-EPMC5552819 | biostudies-other | 2017 Aug

REPOSITORIES: biostudies-other

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Enhanced Photocatalytic Fuel Denitrification over TiO<sub>2</sub>/α-Fe<sub>2</sub>O<sub>3</sub> Nanocomposites under Visible Light Irradiation.

Huang Renkun R   Liang Ruowen R   Fan Haimei H   Ying Shaoming S   Wu Ling L   Wang Xuxu X   Yan Guiyang G  

Scientific reports 20170810 1

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 TiO<sub>2</sub>/α-Fe<sub>2</sub>O<sub>3</sub> heterogeneous photocatalysts with different mass ratios of TiO<sub>2</sub> vs. α-Fe<sub>2</sub>O<sub>3</sub>. Taking photocatalytic denitrification of typical alkali NCCs, pyridine, in gasoline fuel under visible light irradia  ...[more]

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