Understanding on the origins of hydroxyapatite stabilized gold nanoparticles as high-efficiency catalysts for formaldehyde and benzene oxidation

Yu Wang, Bing Bing Chen, Mark Crocker, Yu Jing Zhang, Xiao Bing Zhu, Chuan Shi

Research output: Contribution to journalArticlepeer-review

49 Scopus citations

Abstract

Hydroxyapatite as a green and abundant material was found to enhance the stabilization of gold nanoparticles against sintering. The origins of such stabilization of HAP on supported gold nanoparticles were investigated in the present study. Phosphate groups interacted and stabilized nano-gold at lower temperature (≤400 °C), while hydroxyl group contributed to the stabilization at higher temperature (≤ 600 °C). Both of them contributed to the strong sintering-resistant for calcination as high as 600°C. For the first time we found that Au/HAP and Au/CeO2/HAP catalysts are highly active and stable for formaldehyde and benzene oxidation.

Original languageEnglish
Pages (from-to)195-200
Number of pages6
JournalCatalysis Communications
Volume59
DOIs
StatePublished - Jan 10 2015

Bibliographical note

Publisher Copyright:
© 2014 Elsevier B.V.

Keywords

  • Cerium oxide
  • Hydroxyapatite
  • Sintering-resistance
  • Supported gold catalysts
  • VOC oxidation

ASJC Scopus subject areas

  • Catalysis
  • General Chemistry
  • Process Chemistry and Technology

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