Access to enhanced catalytic core–shell CuO–Pd nanoparticles for the organic transformations. Issue 33 (16th March 2016)

• Record Type: Journal Article
• Authors: Mishra, Kanchan; Basavegowda, Nagaraj; Lee, Yong Rok
• Is Part Of: RSC advances. Volume 6:Issue 33(2016)
• Page Start: 27974
• Page End: 27982
• Publication Date: 2016-03-16
• Subjects: Chemistry -- Periodicals; 540.5
• DOI: 10.1039/c6ra03883b
• Languages: English
• ISSNs: 2046-2069

Abstract

Abstract : This paper describes the biosynthesis of core–shell CuO–Pd nanocatalysts with the aid of a Cyperus rotundus rhizome extract. Abstract : This paper describes the biosynthesis of core–shell CuO–Pd nanoparticles with the aid of a Cyperus rotundus rhizome extract. The crystallinity, surface chemistry, morphology and thermal properties of the synthesized nanoparticles were characterized by X-ray diffraction, X-ray photoelectron spectroscopy, transmission electron microscopy, and thermogravimetric analysis. The nanoparticles with Pd covered by a CuO enriched shell showed enhanced catalytic performance for organic transformations to synthesize 2, 3-dihydroquinazolin-4(1 H )-ones, spirooxindoles, and chromenylpyrimidin-2, 4-diones in excellent yield. Moreover, the nanocatalyst can be recycled effectively for five consecutive reactions without significant loss of catalytic activity.