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Pd nanoparticles deposited on poly(lactic acid) grafted carbon nanotubes: synthesis, characterization and application in Heck C-C coupling reaction.
- Source :
-
Applied catalysis. A, General [Appl Catal A Gen] 2011 May 31; Vol. 399 (1-2), pp. 154-160. - Publication Year :
- 2011
-
Abstract
- Herein we described the synthesis of a novel f-CNTs-Pd nanocatalyst by covalent grafting of poly(lactic acid) (PLA) onto carbon nanotubes (CNTs) and subsequent deposition of Pd nanoparticles. Prior to grafting of PLA, CNTs were oxidized with a mixture of HNO(3)/H(2)SO(4) and successively activated with thionyl chloride. The PLA grafted CNTs (f-CNTs) were then used as platform for in-situ deposition of Pd nanoparticles. The formation of f-CNTs-Pd nanocatalyst was analyzed by UV-vis, FTIR and Raman spectroscopy, powder XRD, energy dispersive spectroscopy and thermogravimetric analysis. The morphologies of the nanocatalyst were characterized using scanning and transmission electron microscopes. The f-CNTs stabilized Pd nanoparticles are found to be more effective in the promotion of Heck cross-coupling reaction between aryl halides and n-butyl acrylate. The f-CNTs-Pd nanocatalyst was regenerated for three cycles of reaction without any significant loss in its activity.
Details
- Language :
- English
- ISSN :
- 0926-860X
- Volume :
- 399
- Issue :
- 1-2
- Database :
- MEDLINE
- Journal :
- Applied catalysis. A, General
- Publication Type :
- Academic Journal
- Accession number :
- 21731192
- Full Text :
- https://doi.org/10.1016/j.apcata.2011.03.050