Characterization and catalytic performance of TiO2 nanotubes-supported gold and copper particles

✍ Scribed by Baolin Zhu; Qi Guo; Xueliang Huang; Shurong Wang; Shoumin Zhang; Shihua Wu; Weiping Huang

• Book ID: 104056982
• Publisher: Elsevier Science
• Year: 2006
• Tongue: English
• Weight: 441 KB
• Volume: 249
• Category: Article
• ISSN: 1381-1169
• DOI: 10.1016/j.molcata.2006.01.013

✦ Synopsis

TiO 2 nanotubes are prepared via the reaction of anatase TiO 2 powder with NaOH solution. Gold and gold-copper supported on TiO 2 nanotubes (Au/TiO 2 NTs and Au-Cu/TiO 2 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 HAuCl 4 solution, calcination temperature and atmosphere as well as gold content on the catalytic performance of Au/TiO 2 NTs are investigated. Compared with Au/TiO 2 NTs, the catalytic performance of Au-Cu/TiO 2 NTs is better.