Journal
JOURNAL OF MOLECULAR CATALYSIS A-CHEMICAL
Volume 249, Issue 1-2, Pages 211-217Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.molcata.2006.01.013
Keywords
gold; copper; modified TiO2 nanotubes; catalytic performance; CO oxidation
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TiO2 nanotubes are prepared via the reaction of anatase TiO, powder with NaOH solution. Gold and gold-copper supported on TiO, nanotubes (Au/TiO, NTs and Au-Cu/TiO2 NTs) are synthesized by deposition-precipitation method. The prepared materials are characterized with BET, powder X-ray diffraction (XRD), transmission electron microscopy (TEM) and high-resolution transmission electron microscopy (HRTEM). Their catalytic performance for low-temperature CO oxidation is studied by using a microreactor-GC system. The influence of support, pH of HAuCl4 solution, calcination temperature and atmosphere as well as gold content on the catalytic performance of Au/TiO2 NTs are investigated. Compared with AU/TiO2 NTs, the catalytic performance of Au-Cu/TiO2 NTs is better. (c) 2006 Elsevier B.V. All rights reserved.
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