Interlayer Void Space as the Key Semipermeable Site for Sieving Molecules and Leaking Ions in Graphene Oxide Filter

Mohammad Razaul Karim, Md Saidul Islam, Nurun Nahar Rabin, Hiroshi Takehira, Kosuke Wakata, Masaaki Nakamura, Ryo Otani, Kei Toda, Shinya Hayami

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

Within the nanopores, junctions and interlayer void space (IVS) in graphene oxide film (GOf), we report that IVS function as the key semipermeable site during sieving. The GOf could filter only dye molecules having nanometer-ranged dimensions. Tinier hydrated ions with angstrom-ranged dimensions couldn't be sieved by GOf. Nature and extent of this molecular sieving property have been justified by observing sieving efficacy and flow times for aqueous solutions of dyes, inorganic salts and their mixtures. GOf also could separate the dyes from mixtures with salts. The flow time followed the trend as: mixtures > salt solutions > dye solutions. PXRD data reveal entering of dye molecules at IVS during sieving. Obviously, a part of dye molecules leaking through the nanopores and junctions of GOf, finally become trapped at the IVS. IVS, therefore has been recognized as the key semipermeable site for molecular sieving in GO. With exploring the insight features of molecular sieving in GOf, this report clearly indicates that IVS needs to be tuned to adopt GOf for various analytical aspects including water purification, desalination and organic inorganic separation.

Original languageEnglish
Pages (from-to)4248-4254
Number of pages7
JournalChemistrySelect
Volume2
Issue number15
DOIs
Publication statusPublished - Jan 1 2017
Externally publishedYes

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Oxides
Oxide films
Ions
Coloring Agents
Molecules
Nanopores
Salts
Desalination
Purification
Water

All Science Journal Classification (ASJC) codes

  • Chemistry(all)

Cite this

Karim, M. R., Islam, M. S., Rabin, N. N., Takehira, H., Wakata, K., Nakamura, M., ... Hayami, S. (2017). Interlayer Void Space as the Key Semipermeable Site for Sieving Molecules and Leaking Ions in Graphene Oxide Filter. ChemistrySelect, 2(15), 4248-4254. https://doi.org/10.1002/slct.201700503

Interlayer Void Space as the Key Semipermeable Site for Sieving Molecules and Leaking Ions in Graphene Oxide Filter. / Karim, Mohammad Razaul; Islam, Md Saidul; Rabin, Nurun Nahar; Takehira, Hiroshi; Wakata, Kosuke; Nakamura, Masaaki; Otani, Ryo; Toda, Kei; Hayami, Shinya.

In: ChemistrySelect, Vol. 2, No. 15, 01.01.2017, p. 4248-4254.

Research output: Contribution to journalArticle

Karim, MR, Islam, MS, Rabin, NN, Takehira, H, Wakata, K, Nakamura, M, Otani, R, Toda, K & Hayami, S 2017, 'Interlayer Void Space as the Key Semipermeable Site for Sieving Molecules and Leaking Ions in Graphene Oxide Filter', ChemistrySelect, vol. 2, no. 15, pp. 4248-4254. https://doi.org/10.1002/slct.201700503
Karim, Mohammad Razaul ; Islam, Md Saidul ; Rabin, Nurun Nahar ; Takehira, Hiroshi ; Wakata, Kosuke ; Nakamura, Masaaki ; Otani, Ryo ; Toda, Kei ; Hayami, Shinya. / Interlayer Void Space as the Key Semipermeable Site for Sieving Molecules and Leaking Ions in Graphene Oxide Filter. In: ChemistrySelect. 2017 ; Vol. 2, No. 15. pp. 4248-4254.
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