Natural saponin stabilized nano-catalyst as efficient dye-degradation catalyst

Sayan Ganguly, Subhadip Mondal, Poushali Das, Poushali Bhawal, Tushar kanti Das, Madhuparna Bose, Sumita Choudhary, Subhashis Gangopadhyay, Amit Kumar Das, Narayan Ch Das

Research output: Contribution to journalArticlepeer-review

63 Scopus citations


Silver nanoparticles decorated reduced graphene oxide is a well-established nanoparticle for multifunctional applications. Herein, the aim of the work is to prepare the nanoparticles in an in situ green reduction fashion without using any external reducing agent and stabilizing agent. Thus, a new stabilizer cum reducing agent has been introduced for the first time to prepare the silver nanoparticle decorated reduced graphene oxide. The new stabilizer cum reducing agent was naturally occurring saponin which has been extracted as Brahmi leaf (Bacopa monniera) sap. The as-synthesized material has been confirmed by X-ray diffraction, UV–visible spectra and Raman spectra. The surface chemical features have been confirmed by X-ray photoelectron spectroscopy. Transmission electron micrograph revealed distinct nanoparticles abound range of 12-35 nm over reduced graphene oxide basal plane. The synthesized nanoparticles have been tested for dual applications, i.e., solid state catalytic activity and bactericidal activity.

Original languageEnglish
Pages (from-to)86-95
Number of pages10
JournalNano-Structures and Nano-Objects
StatePublished - Oct 2018
Externally publishedYes

Bibliographical note

Publisher Copyright:
© 2018 Elsevier B.V.


  • Bactericidal
  • Catalytic activity
  • Green method
  • Microwave
  • Saponin


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