Synthesis of nanoporous zeolite-Y and zeolite-Y/GO nanocomposite using polyelectrolyte functionalized graphene oxide

Aasif A. Dabbawala, Vasileios Tzitzios, Kevin Sunny, Kyriaki Polychronopoulou, Georgia Basina, Issam Ismail, Vishnu Pillai, Anjana Tharalekshmy, Samuel Stephen, Saeed M. Alhassan

Research output: Contribution to journalArticlepeer-review

19 Scopus citations

Abstract

Zeolite-Y with different particle size was synthesized and the growth of crystals was studied in the presence of a cationic polyelectrolyte (PDDA) functionalized graphene oxide (PDDA-GO). The assembly of PDDA-GO was found to be cooperative in the growth of pure zeolite-Y crystals with various particle sizes (400 nm and 100 nm). The submicron size zeolite-Y particles were grown with entrapment of the GO nanosheets and the complete removal of PDDA-GO by calcination under air atmosphere assisted nanoporosity generation in the zeolite crystals. Whereas the growth of nano-size zeolite-Y particles occurred through both side of GO surface and produce nanocomposite with inter-particles porosity. The synthesized nanoporous zeolite-Y and zeolite-Y/GO nanocomposite showed higher water adsorption capacity (259–291 mg/g) than microporous zeolite-Y that placed these adsorbents as promising candidate for water adsorption applications.

Original languageBritish English
Pages (from-to)369-375
Number of pages7
JournalSurface and Coatings Technology
Volume350
DOIs
StatePublished - 25 Sep 2018

Keywords

  • Graphene oxide
  • Nanocomposite
  • Nanoporosity
  • PDDA
  • Zeolite-Y

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