Cooperative catalytic activity of cyclodextrin and Ag nanoparticles immobilized on spherical polyelectrolyte brushes

Jianjia Liu, Jie Wang, Zhongming Zhu, Li Li, Xuhong Guo, Stephen F. Lincoln, Robert K. Prud'homme

Research output: Contribution to journalArticle

27 Scopus citations

Abstract

Significance: Spherical polyelectrolyte brushes (SPB) loaded with silver nanoparticles (Ag-NP) were synthesized, and they were characterized in aqueous solution using TEM, ICP-AES and UV-vis spectroscopy. While the size distribution of the Ag-NP synthesized at a given temperature is quite uniform this distribution varies with change in synthesis temperature. The Ag-NP have a strong catalytic effect on the reduction of 4-nitrophenol to 4-aminophenol by NaBH4. The addition of α-cyclodextrin (α-CD) further accelerates this 4-nitrophenol reduction and modifies the associated activation parameters. This is attributed to α-CD complexing 4-nitrophenol in the vicinity of the Ag-NP surface and thereby aiding the catalysis.

Original languageEnglish (US)
Pages (from-to)1977-1982
Number of pages6
JournalAIChE Journal
Volume60
Issue number6
DOIs
StatePublished - Jun 2014

All Science Journal Classification (ASJC) codes

  • Biotechnology
  • Environmental Engineering
  • Chemical Engineering(all)

Keywords

  • Catalysis
  • Silver nanoparticle
  • Spherical polyelectrolyte brush
  • α-cyclodextrin

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