Mesosponge Optical Sinks for Multifunctional Mercury Ion Assessment and Recovery from Water Sources

Sherif A. El-Safty, Masaru Sakai, Mahmoud M. Selim, Awatif A. Hendi

    Research output: Contribution to journalArticle

    20 Citations (Scopus)

    Abstract

    Using the newly developed organic-inorganic colorant membrane is an attractive approach for the optical detection, selective screening and removal, and waste management recovery of highly toxic elements, such as Hg(II) ions, from water sources. In the systematic mesosponge optical sinks (MOSs), anchoring organic colorants into 3D, well-defined cage cavities and interconnected tubular pores (10 nm) in the long microscale channels of membrane scaffolds enhances the requirements and intrinsic properties of the hierarchal membrane. This scalable design is the first to allow control of the multifunctional processes of a membrane in a one-step screening procedure, such as the detection/recognition, removal, and filtration of ultratrace Hg(II) ions, even from actual water sources (i.e., tap, underground). The selective recovery, detection, and extraction processes of Hg(II) ions in a heterogeneous mixture with inorganic cations and anions as well as organic molecules and surfactants are mainly dependent on the structure of the colorant agent, the pH conditions, competitive ion-system compositions and concentrations, and Hg-to-colorant binding events. Our result shows that the solid MOS membrane arrays can be repeatedly recycled and retain their hierarchal mesosponge sink character, avoiding fouling via the precipitation of metal salts as a result of the reuse cycle. The Hg(II) ion rejection and the permeation of nonselective elements based on the membrane filtration protocol may be key considerations in water purification and separation requirements. The selective recovery process of Hg(II) ions in actual contaminated samples collected from tap and underground water sources in Saudi Arabia indicates the practical feasibility of our designed MOS membrane arrays. (Figure Presented)

    Original languageEnglish
    Pages (from-to)13217-13231
    Number of pages15
    JournalACS Applied Materials and Interfaces
    Volume7
    Issue number24
    DOIs
    Publication statusPublished - 2015 Jun 24

    Fingerprint

    Mercury
    Ions
    Membranes
    Recovery
    Water
    Screening
    Poisons
    Waste management
    Fouling
    Ion Channels
    Surface-Active Agents
    Scaffolds
    Permeation
    Purification
    Anions
    Cations
    Groundwater
    Salts
    Metals
    Surface active agents

    Keywords

    • filter
    • mercury
    • mesosponge
    • optical
    • recovery
    • sensor
    • sinks
    • water sources

    ASJC Scopus subject areas

    • Materials Science(all)

    Cite this

    Mesosponge Optical Sinks for Multifunctional Mercury Ion Assessment and Recovery from Water Sources. / El-Safty, Sherif A.; Sakai, Masaru; Selim, Mahmoud M.; Hendi, Awatif A.

    In: ACS Applied Materials and Interfaces, Vol. 7, No. 24, 24.06.2015, p. 13217-13231.

    Research output: Contribution to journalArticle

    El-Safty, Sherif A. ; Sakai, Masaru ; Selim, Mahmoud M. ; Hendi, Awatif A. / Mesosponge Optical Sinks for Multifunctional Mercury Ion Assessment and Recovery from Water Sources. In: ACS Applied Materials and Interfaces. 2015 ; Vol. 7, No. 24. pp. 13217-13231.
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