fulltext.study @t Gmail

Development of gold nanoparticle-fungal hybrid based heterogeneous interface for catalytic applications

Paper ID Volume ID Publish Year Pages File Format Full-Text
34318 45017 2015 8 PDF Available
Title
Development of gold nanoparticle-fungal hybrid based heterogeneous interface for catalytic applications
Abstract

•Rapid synthesis of catalytically active bio-supported gold nanoparticles.•Fungus acted as machinery for nanoparticle synthesis and immobilization.•Development of “bionanocatalyst” based stable heterogeneous interface.•Sodium borohydride mediated reduction of 4-nitrophenol and hexacyanoferrate(III).•A3 coupling for synthesis of propargylamine from aldehyde, secondary amine & alkyne.

Unsupported and free gold nanoparticles (Au NPs) represent great potential in the field of catalysis. However, shortcomings like agglomeration and loss of the precious catalyst has encouraged the development of supported Au NPs as catalyst with increased activity, selectivity, ease of separation from the reaction mixture and recyclability. The present work demonstrates an eco-friendly, rapid and facile synthesis of catalytically active bio-supported Au NPs using a soil fungus, Aspergillus japonicus AJP01. The dual role of the fungal isolate in synthesis as well as immobilization of Au NPs is the remarkable feature of the study. The fungus successfully reduced Au(III) into Au NPs containing principally Au(0) with a small percentage of Au(I) as revealed by X-ray photoelectron spectroscopy. The particles were spherical in shape and well distributed on fungal mycelia with size ranging predominantly between 15 and 20 nm. The as-synthesized nanoparticle-fungal hybrid was found to be highly efficient in catalyzing sodium borohydride mediated reduction reactions of 4-nitrophenol and hexacyanoferrate(III). The versatility of the bionanocatalyst was further demonstrated by catalyzing the A3 coupling reactions for the synthesis of propargylamines.

Graphical abstractFigure optionsDownload full-size imageDownload as PowerPoint slide

Keywords
Bionanocatalyst; Biosynthesis; Supported gold nanoparticles; NaBH4 mediated reduction; A3 coupling
First Page Preview
Development of gold nanoparticle-fungal hybrid based heterogeneous interface for catalytic applications
Get Full-Text Now
Don't Miss Today's Special Offer
Price was $35.95
You save - $31
Price after discount Only $4.95
100% Money Back Guarantee
Full-text PDF Download
Online Support
Any Questions? feel free to contact us
Publisher
Database: Elsevier - ScienceDirect
Journal: Process Biochemistry - Volume 50, Issue 8, August 2015, Pages 1293–1300
Authors
, , , ,
Subjects
Physical Sciences and Engineering Chemical Engineering Bioengineering
Get Full-Text Now
Don't Miss Today's Special Offer
Price was $35.95
You save - $31
Price after discount Only $4.95
100% Money Back Guarantee
Full-text PDF Download
Online Support
Any Questions? feel free to contact us