Mussel inspired green synthesis of silver nanoparticles-decorated halloysite nanotube using dopamine: Characterization and evaluation of its catalytic activity

Tushar Kanti Das, Sayan Ganguly, Poushali Bhawal, Sanjay Remanan, Subhadip Mondal, N. C. Das

Research output: Contribution to journalArticlepeer-review

63 Scopus citations

Abstract

Naturally occurring ceramic tubular clay, Halloysite nanotubes (HNTs), having a significant amount of surface hydroxyls has been coated by self-polymerized dopamine in this work. The polydopamine-coated HNTs acts as a self-reducing agent for Ag+ ion to Ag0 in nanometer abundance. Herein, nano size Ag0 deposited on solid support catalyst has been used to mitigate water pollution within 10 min. To establish the versatility of the catalyst, nitroaryl (4-nitrophenol) and synthetic dye (methylene blue) have been chosen as model pollutant. The degradation/reduction of the aforementioned pollutants was confirmed after taking UV-visible spectra of the respective compounds. All the study can make sure that the catalyst is green and the rate constant value for catalytic reduction of 4-nitrophenol and methylene blue was calculated to be 4.45 × 10-3 and 1.13 × 10-3 s-1, respectively, which is found to be more efficient in comparison to other nanostructure and commercial Pt/C nanocatalyst (1.00 × 10-3 s-1).

Original languageEnglish
Pages (from-to)173-186
Number of pages14
JournalApplied Nanoscience (Switzerland)
Volume8
Issue number1-2
DOIs
StatePublished - 1 Jan 2018
Externally publishedYes

Bibliographical note

Publisher Copyright:
© Springer-Verlag GmbH Germany, part of Springer Nature 2018.

Keywords

  • 4-nitrophenol
  • Catalyst
  • Dopamine
  • Halloysite nanotubes
  • Methylene blue
  • Polydopamine

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