Removal of NOx from air through cooperation of the TiO2 photocatalyst and urea on activated carbon fiber at room temperature

Jin Miyawaki, Takaaki Shimohara, Noriaki Shirahama, Akinori Yasutake, Masaaki Yoshikawa, Isao Mochida, Seong-Ho Yoon

Research output: Contribution to journalArticle

27 Citations (Scopus)

Abstract

Removal of atmospheric NO to harmless N2 was successfully achieved through the continuous oxidation and reduction of NO into N2 using pitch-based activated carbon fiber (ACF), in which TiO2 and urea were co-supported. The combination of TiO2 and urea on the ACF gave high oxidation and reduction of NO. The TiO2 photocatalyst converted NO into NO2, which was immediately passed over urea on the ACF and reduced into harmless N2. Humidity seemed to accelerate the desorption of NO2 from the TiO2 surface, but did not affect the NO oxidation, indicating that humidity did not interfere with the reaction of NO into N2. The ACF system described is potentially very useful for the harmless removal of NO in the atmosphere near the roadside of urban area using natural wind effectively.

Original languageEnglish
Pages (from-to)273-278
Number of pages6
JournalApplied Catalysis B: Environmental
Volume110
DOIs
Publication statusPublished - Nov 2 2011

Fingerprint

Photocatalysts
Urea
Activated carbon
urea
Carbon fibers
activated carbon
air
Air
oxidation
Oxidation
Atmospheric humidity
humidity
temperature
Temperature
Roadsides
Desorption
desorption
urban area
carbon fiber
co-operation

All Science Journal Classification (ASJC) codes

  • Catalysis
  • Process Chemistry and Technology
  • Environmental Science(all)

Cite this

Removal of NOx from air through cooperation of the TiO2 photocatalyst and urea on activated carbon fiber at room temperature. / Miyawaki, Jin; Shimohara, Takaaki; Shirahama, Noriaki; Yasutake, Akinori; Yoshikawa, Masaaki; Mochida, Isao; Yoon, Seong-Ho.

In: Applied Catalysis B: Environmental, Vol. 110, 02.11.2011, p. 273-278.

Research output: Contribution to journalArticle

Miyawaki, Jin ; Shimohara, Takaaki ; Shirahama, Noriaki ; Yasutake, Akinori ; Yoshikawa, Masaaki ; Mochida, Isao ; Yoon, Seong-Ho. / Removal of NOx from air through cooperation of the TiO2 photocatalyst and urea on activated carbon fiber at room temperature. In: Applied Catalysis B: Environmental. 2011 ; Vol. 110. pp. 273-278.
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