Au-Pd bimetallic nanoparticles embedded highly porous Fenugreek polysaccharide based micro networks for catalytic applications

K. Mallikarjuna, Chinna Bathula, G. Dinneswara Reddy, Nabeen K. Shrestha, Haekyoung Kim, Yong Young Noh

Research output: Contribution to journalArticlepeer-review

42 Scopus citations

Abstract

Currently, metallic nanoparticles possessing versatile heterogeneous catalytic functionality such as in hydrogenation, water splitting, hydrogen production and CO2 reduction for global pollution remediation have been paid great attentions due to their high chemical stability, superior activity and unique electrical and optical properties. However, the gradual degradation of their catalytic activity on multiple usage limits the monometallic nanoparticles to industrial applications. Herein, we fabricated the highly porous fenugreek polysaccharide assisted green synthesis of Au–Pd nanostructures for heterogeneous catalytic hydrogenation of the industrial usable highly toxic 4-nitrophenol to the medicinally useful 4-aminophenol. The aqueous method developed in the present work is environmentally friendly, simple and low-cost procedure. The fabricated bimetallic porous Au–Pd nanostructures characterized using SEM, TEM, UV–Vis, XRD, XPS and FTIR analysis. The catalytic activity of the synthesized nanostructures was studied for the heterogeneous hydrogenation of 4-nitrophenol to 4-aminophenol in presence of NaBH4, and the catalytic kinetic for the hydrogenation was analyzed via an UV–Vis spectrometer.

Original languageEnglish
Pages (from-to)352-358
Number of pages7
JournalInternational Journal of Biological Macromolecules
Volume126
DOIs
StatePublished - 1 Apr 2019

Keywords

  • 4-nitrophenol to 4-aminophenol
  • Gold-palladium nanoparticles
  • Green synthesis
  • Hydrogenation

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