Highly effective photocatalytic system comprising semiconductor photocatalyst and supported bimetallic non-photocatalyst for selective reduction of nitrate to nitrogen in water

Jun Hirayama, Hirofumi Kondo, Yu Ki Miura, Ryu Abe, Yuichi Kamiya

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33 Citations (Scopus)

Abstract

Photocatalytic reduction of NO 3 - under UV irradiation in the presence of ethanol was carried out in the presence of semiconductor photocatalyst Pt/TiO 2 and supported bimetallic non-photocatalyst Sn-Pd/Al 2O 3, which were dispersed in water. This system effectively and selectively promoted the photocatalytic reduction of NO 3 - to N 2, whereas Pt/TiO 2 or Sn-Pd/Al 2O 3 alone showed no or little activity under the reaction conditions. The decomposition rate of NO 3 - and selectivity to gaseous nitrogen compounds (mainly N 2) for the present photocatalytic system were higher than those for TiO 2 photocatalyst directly-modified with Sn-Pd particles.

Original languageEnglish
Pages (from-to)99-102
Number of pages4
JournalCatalysis Communications
Volume20
DOIs
Publication statusPublished - 5 Apr 2012
Externally publishedYes

Keywords

  • Bimetallic palladium catalyst
  • Groundwater remediation
  • Photocatalytic nitrate reduction
  • Titanium oxide

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