Ampholyte polystyrene spheres self-regulated deposition of noble metal nanoparticles for catalyst applications

Szu Ching Hsiao, Jinn Luh Ou, Mao Suan Huang, Chang Pin Chang, Yuh Sung, Ming Der Ger

Research output: Contribution to journalArticlepeer-review

9 Citations (Scopus)

Abstract

The polystyrene (PS) spheres having dual functional groups were synthesized using emulsifier-free emulsion polymerization based on St/potassium persulfate/water system in the presence of V-50 as co-initiator. Fourier transform infrared (FTIR) confirms the presence of the sulfate and the amino groups on the surfaces of PS spheres. Transmission electron microscopy and X-ray photoelectron spectra revealed that the PS spheres were successfully deposited with catalytic palladium (Pd) or gold (Au) nanoparticles (NPs). The reduction of 4-nitroaniline to 4-phenylenediamine used as a model reaction was performed for catalysis studies and examined by ultraviolet. It was found that both Au and Pd PS dispersions show high catalytic activity. The Pd PS dispersion of 200 μl with only Pd content of 1.09 wt.% exhibits an excellent catalytic effect superior to the commercial Pd/C catalyst, i.e., less than 35 s taken for the completion of the reduction of 4-nitroaniline.

Original languageEnglish
Pages (from-to)1611-1619
Number of pages9
JournalColloid and Polymer Science
Volume288
Issue number16-17
DOIs
Publication statusPublished - Nov 2010

Keywords

  • Catalytic activity
  • Composite
  • Nanoparticles
  • Polystyrene microspheres

ASJC Scopus subject areas

  • Physical and Theoretical Chemistry
  • Polymers and Plastics
  • Materials Chemistry
  • Colloid and Surface Chemistry

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