Journal of Chemical Sciences

, Volume 124, Issue 4, pp 841–845 | Cite as

Nonthermal plasma assisted photocatalytic oxidation of dilute benzene

  • J KARUPPIAH
  • E LINGA REDDY
  • L SIVACHANDIRAN
  • R KARVEMBU
  • Ch SUBRAHMANYAM
Article
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Accepted:

Abstract

Oxidative decomposition of low concentrations (50–1000 ppm) of diluted benzene in air was carried out in a nonthermal plasma (NTP) dielectric barrier discharge (DBD) reactor with the inner electrode made up of stainless steel fibres (SMF) modified with transition metal oxides in such a way to integrate the catalyst in discharge zone. Typical results indicate the better performance of MnOx and TiO2/MnOx modified systems, which may be attributed to the in situ decomposition of ozone on the surface of MnOx that may lead to the formation of atomic oxygen; whereas ultraviolet light induced photocatalytic oxidation may be taking place with TiO2 modified systems. Water vapour improved the selectivity to total oxidation.

Graphical Abstract

Oxidative decomposition of low concentrations of (50–1000 ppm) of diluted benzene in air was carried out in a nonthermal plasma (NTP) dielectric barrier discharge (DBD) reactor at ambient conditions with the inner electrode modified with transition metal oxides (TiO2, MnOx and TiO2/MnOx). The results indicated that TiO2/MnOx integrated system showed the best performance.

Keywords

Nonthermal plasma sintered metal fibres photocatalysis ozone decomposition VOC abatement 
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Copyright information

© Indian Academy of Sciences 2012

Authors and Affiliations

  • J KARUPPIAH
    • 1
    • 2
  • E LINGA REDDY
    • 1
    • 2
  • L SIVACHANDIRAN
    • 1
    • 2
  • R KARVEMBU
    • 1
  • Ch SUBRAHMANYAM
    • 2
  1. 1.Department of ChemistryNational Institute of TechnologyTiruchirappalliIndia
  2. 2.Department of ChemistryIndian Institute of TechnologyHyderabadIndia

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