Chinese Journal of Catalysis ›› 2013, Vol. 34 ›› Issue (6): 1123-1127.DOI: 10.1016/S1872-2067(12)60536-1

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Inhibiting Pd nanoparticle aggregation and improving catalytic performance using one-dimensional CeO2 nanotubes as support

TANG Zironga, YIN Xiaa, ZHANG Yanhuia,b, ZHANG Nana,b, XU Yijuna,b   

  1. a College of Chemistry and Engineering, New Campus, Fuzhou University, Fuzhou 350108, Fujian, China;
    b College of Chemistry and Engineering & State Key Laboratory Breeding Base of Photocatalysis, Fuzhou University, Fuzhou 350002, Fujian, China
  • Received:2012-11-23 Revised:2012-12-25 Online:2013-06-07 Published:2013-06-09
  • Supported by:

    This work was supported by the National Natural Science Foundation of China (20903022, 20903023), the Science and Technology Development of Foundation of Fuzhou University (2009-XQ-10), the Open Fund of Photocatalysis of Fuzhou University (0380038004), and Program for Returned High-level Overseas Chinese Scholars of Fujian Province.

Abstract:

One-dimensional (1D) CeO2 nanotubes can be used as a support to inhibit Pd nanoparticle aggregation during the high temperature calcination process in air. This is in opposition to the significant aggregation of Pd particles that is observed for the preparation of supported Pd metal catalysts using non-1D commercial CeO2 as support. The as-prepared Pd/CeO2 nanotube catalyst exhibits much higher catalytic performance than Pd/commercial CeO2 toward the aerobic selective oxidation of benzyl alcohol to benzaldehyde. This work suggests that 1D metal oxide materials can be used as a promising class of supports to inhibit noble metal nanoparticle aggregation, thereby improving catalytic performance toward target reactions.

Key words: Ceria, Nanotube, Palladium, Nanoparticle, Support effect, Selective oxidation