SCI和EI收录∣中国化工学会会刊

Chinese Journal of Chemical Engineering ›› 2015, Vol. 23 ›› Issue (11): 1907-1915.DOI: 10.1016/j.cjche.2015.08.009

• 材料与产品工程 • 上一篇    下一篇

Facile synthesis of porous Pd nanoflowerswith excellent catalytic activity towards CO oxidation

Tareque Odoom-Wubah1, Mingming Du1, Williams Brown Osei1, Daohua Sun1, Jiale Huang1, Qingbiao Li1,2,3   

  1. 1 Department of Chemical and Biochemical Engineering, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, China;
    2 Environmental Science Research Center, College of the Environment & Ecology, Xiamen University, Xiamen 361005, China;
    3 College of Chemistry & Life Science, Quanzhou Normal University, Quanzhou 362000, China
  • 收稿日期:2015-06-01 修回日期:2015-08-05 出版日期:2015-11-28 发布日期:2015-12-18
  • 通讯作者: Jiale Huang, Qingbiao Li
  • 基金资助:

    Supported by the National Natural Science Foundation of China (21106117, 21036004).

Facile synthesis of porous Pd nanoflowerswith excellent catalytic activity towards CO oxidation

Tareque Odoom-Wubah1, Mingming Du1, Williams Brown Osei1, Daohua Sun1, Jiale Huang1, Qingbiao Li1,2,3   

  1. 1 Department of Chemical and Biochemical Engineering, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, China;
    2 Environmental Science Research Center, College of the Environment & Ecology, Xiamen University, Xiamen 361005, China;
    3 College of Chemistry & Life Science, Quanzhou Normal University, Quanzhou 362000, China
  • Received:2015-06-01 Revised:2015-08-05 Online:2015-11-28 Published:2015-12-18
  • Contact: Jiale Huang, Qingbiao Li
  • Supported by:

    Supported by the National Natural Science Foundation of China (21106117, 21036004).

摘要: Microorganism-mediated, hexadecyltrimethylammonium chloride (CTAC)-directed (MCD) method was employed in this work to synthesize Pd nanoflowers (PdNFs). Proper Pichia pastoris cells (PPCs) dosage, ascorbic acid (AA), Pd(NO3)2 and CTAC concentrations were essential for the growth of the PdNFs. The size of the assynthesized PdNFs could be tuned by adjusting the amount of Pd(NO3)2 solution and dosage of PPCs used. Characterization techniques such as X-ray diffraction, transmission electron microscopy, and X-ray photoelectron spectroscopy were used to verify the nature of the PdNFs. Finally the PdNF/PPC nanocomposites were immobilized onto TiO2 supports to obtain bio-PdNF/TiO2 catalysts which showed excellent catalytic activity for CO oxidation, obtaining 100% conversion at 100 ℃ and remaining stable over a period of 52 h of reaction time.

关键词: Pd nanoflowers, Microorganism, CO oxidation, CTAC

Abstract: Microorganism-mediated, hexadecyltrimethylammonium chloride (CTAC)-directed (MCD) method was employed in this work to synthesize Pd nanoflowers (PdNFs). Proper Pichia pastoris cells (PPCs) dosage, ascorbic acid (AA), Pd(NO3)2 and CTAC concentrations were essential for the growth of the PdNFs. The size of the assynthesized PdNFs could be tuned by adjusting the amount of Pd(NO3)2 solution and dosage of PPCs used. Characterization techniques such as X-ray diffraction, transmission electron microscopy, and X-ray photoelectron spectroscopy were used to verify the nature of the PdNFs. Finally the PdNF/PPC nanocomposites were immobilized onto TiO2 supports to obtain bio-PdNF/TiO2 catalysts which showed excellent catalytic activity for CO oxidation, obtaining 100% conversion at 100 ℃ and remaining stable over a period of 52 h of reaction time.

Key words: Pd nanoflowers, Microorganism, CO oxidation, CTAC