Nanocrystalline Pd/carbon nanotube composites synthesized using supercritical fluid for superior glucose sensing performance

Chueh Han Wang, Sheng Wei Lee, Chung Jen Tseng, Jia Wun Wu, I. Ming Hung, Chuan Ming Tseng, Jeng Kuei Chang

Research output: Contribution to journalArticlepeer-review

14 Scopus citations

Abstract

With the aid of supercritical carbon dioxide (SCCO2), which has gas-like diffusivity, extremely low viscosity, and near-zero surface tension, the synthesized nano-sized Pd particles (approximately 5 nm in diameter) are uniformly distributed on carbon nanotubes (CNTs). The decoration density of Pd nanoparticles on the CNTs can be simply controlled, without varying the particle size, by adjusting the Pd hexafluoroacetylacetonate precursor to CNT ratio. Since the Pd nanoparticles are highly dispersed and tightly anchored on the CNTs, the obtained composite shows enhanced electro-sensing performance toward glucose compared to that of the control sample prepared using a conventional deposition process (without SCCO2).

Original languageEnglish
Pages (from-to)S496-S500
JournalJournal of Alloys and Compounds
Volume615
Issue numberS1
DOIs
StatePublished - 15 Jan 2015

Keywords

  • Chemical synthesis
  • Composite materials
  • Electrochemical reactions
  • Electrode materials
  • Nanostructured materials
  • TEM
  • Transmission electron microscopy

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