Jump to main content
Jump to site search

Issue 9, 2014
Previous Article Next Article

Magnetic gold nanocatalyst (nanocat-Fe–Au): catalytic applications for the oxidative esterification and hydrogen transfer reactions

Author affiliations

Abstract

An efficient and sustainable protocol is described for the oxidative esterification of aldehydes and the reduction of aromatic nitro compounds that uses a magnetically separable and reusable maghemite-supported gold nanocatalyst (nanocat-Fe–Au) under mild conditions. The complex chemical, morphological, structural and size analyses, including e.g. XPS, HRTEM, in-field Mössbauer spectroscopy and HRTEM, revealed that the hybrid material is composed of a well-defined stoichiometric maghemite support (20–30 nm) decorated with ultrasmall (5–6 nm) gold nanoparticles. The hybrid catalytic system containing 4 wt% of nanogold has been generated using simple impregnation methods in aqueous medium from readily available starting materials and was recycled five times without any significant loss in catalytic activity; high yields, 40–95% and 83–94% for oxidative esterification and reduction reactions, respectively, were obtained.

Graphical abstract: Magnetic gold nanocatalyst (nanocat-Fe–Au): catalytic applications for the oxidative esterification and hydrogen transfer reactions

Back to tab navigation

Supplementary files

Publication details

The article was received on 30 Apr 2014, accepted on 30 May 2014 and first published on 30 May 2014


Article type: Paper
DOI: 10.1039/C4GC00774C
Author version available: Download Author version (PDF)
Citation: Green Chem., 2014,16, 4137-4143
  •   Request permissions

    Magnetic gold nanocatalyst (nanocat-Fe–Au): catalytic applications for the oxidative esterification and hydrogen transfer reactions

    M. B. Gawande, A. K. Rathi, J. Tucek, K. Safarova, N. Bundaleski, O. M. N. D. Teodoro, L. Kvitek, R. S. Varma and R. Zboril, Green Chem., 2014, 16, 4137
    DOI: 10.1039/C4GC00774C

Search articles by author

Spotlight

Advertisements