Preparation of a graphene oxide/faujasite composite adsorbent

Dae Woo Kim, He Han, Hanim Kim, Xinwen Guo, Michael Tsapatsis

Research output: Contribution to journalArticle

7 Citations (Scopus)

Abstract

Template-free synthesis of faujasite type zeolite was investigated in the presence of graphene oxide (GO) in the synthesis sol. Nano-sized FAU/EMT, nano-sized FAU, and micro-sized FAU can be obtained depending on synthesis conditions such as precursor molar ratios, crystallization temperature, and the use of freeze-drying to alter water content. The obtained GO/Faujasite powder was shaped in the form of a disk by vacuum filtration. The shaped GO/Faujasite powder is electrically conductive (∼0.4 S/m and 2000-3000 Ω/sq), mechanically stable (Young's modulus: ∼7 MPa) and contains micropores, mesopores, and macropores. Furthermore, the GO/Faujasite disk exhibits high methylene blue adsorption capacity and can be regenerated by thermal annealing at 300 °C without significant capacity loss.

Original languageEnglish
Pages (from-to)243-250
Number of pages8
JournalMicroporous and Mesoporous Materials
Volume268
DOIs
Publication statusPublished - 2018 Sep 15

All Science Journal Classification (ASJC) codes

  • Chemistry(all)
  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials

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