Mesotubular-Structured Hybrid Membrane Nanocontainer for Periodical Monitoring, Separation, and Recovery of Cobalt Ions from Water

Sherif A. El-Safty, Masaru Sakai, Mahmoud M. Selim, Abdulaziz A. Alhamid

    Research output: Contribution to journalArticle

    15 Citations (Scopus)

    Abstract

    Exposure to toxins can cause deleterious effects even at very low concentrations. We have developed an optical sensor, filter, and extractor (i.e., containerlike) in a nanoscale membrane (NSM) for the ultratrace sensing, separation, and recovery of Co<sup>2+</sup> ions from water. The design of the NSM is successfully controlled by dense decoration of a hydrophobic oil-hydrophilic receptor onto mesoscale tubular-structured silica nanochannels made of a hybrid anodic alumina membrane. The particular structure of the nanocontainer is ideal to control the multiple functions of the membrane, such as the optical detection/recognition, rejection/permeation, and recovery of Co<sup>2+</sup> species in a single step. A typical sensor, filter, and extractor assessment experiment was performed by using a benchtop contact time technique and a flow-through cell detector to allow for precise control of the optical detection and exclusive rejection of target ions and the permeation of nontarget metal ions in water. This nanocontainer membrane has great potential to meet the increasing needs of purification and separation of Co<sup>2+</sup> ions. Containment unit: The fabrication of a nanocontainer membrane for the sensing, separation, and recovery of Co<sup>2+</sup> ions in water is reported. The design of the sensor/filter/extractor with unique nanotubes, toroidal mosaic character, and microscale length enables highly ion-selective separation (rejection/permeation) and adsorption, efficient reversibility/reusability with repeated cycles of reuse, and recovery of Co<sup>2+</sup> ions from underground water sources.

    Original languageEnglish
    Pages (from-to)1909-1918
    Number of pages10
    JournalChemistry - An Asian Journal
    Volume10
    Issue number9
    DOIs
    Publication statusPublished - 2015 Sep 1

    Keywords

    • cobalt
    • membranes
    • mesoscale tubular structures
    • nanocontainers
    • selective ion filtration

    ASJC Scopus subject areas

    • Chemistry(all)

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