TiO2 nanotube-supported Cu as the catalyst for selective NO reduction with NH3

Shin An Chen, Jun Nan Nian, Chien Cheng Tsai, Hsisheng Teng

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14 Citations (Scopus)


Catalyst supports composed of titanate nanotubes were prepared from hydrothermal treatment on TiO2 nanoparticles in NaOH followed by HCl washing. The nanotubes exhibited well-defined TiO2 anatase phase after calcination at 400°C. The nanotube aggregates and other commercially available TiO2 nanoparticles, all with surface areas >300 m 2/g, were impregnated with Cu and examined in selective catalytic reduction of NO with NH3. In catalyst preparation, the nanotubes were found to be more thermally stable than nanoparticles, withstanding agglomeration at elevated temperatures. The Cu species supported on the nanotubes showed a higher catalytic activity than those supported on the nanoparticles. Analysis with temperature programmed reduction, X-ray photoelectron spectroscopy, and NO adsorption reflected that the layered-titanate feature of the tube wall was advantageous for even distribution of the Cu species, thus leading to the high-catalytic activity of the tubular Cu/TiO2 catalyst.

Original languageEnglish
Pages (from-to)600-605
Number of pages6
JournalJournal of the Air and Waste Management Association
Issue number5
Publication statusPublished - 2007 May

All Science Journal Classification (ASJC) codes

  • Waste Management and Disposal
  • Pollution
  • Atmospheric Science
  • Management, Monitoring, Policy and Law


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