Monolithic scaffolds for highly selective ion sensing/removal of Co(II), Cu(II), and Cd(II) ions in water

Mohamed A. Shenashen, Sherif A. El-Safty, Emad A. Elshehy

    Research output: Contribution to journalArticle

    43 Citations (Scopus)

    Abstract

    High exposure to metals, such as cobalt (Co), copper (Cu) and cadmium (Cd), potentially has adverse effects, and can cause severe health problems, leading to a number of specific diseases. This study primarily aims to monitor, detect, separate, and remove the trace concentrations of Co(II), Cu(II), and Cd(II) ions in water, without a preconcentration process, using aluminosilica optical sensor (ASOS) monoliths. These monolithic scaffolds with advantageous physical features (i.e., large surface area-to-volume ratios of the scaffolds, active acid sites and uniform mesocage cubic pores) can strongly induce H-bonding and dispersive interactions with organic chelating agent, resulting in the formation of stable ASOS. In this engineering process, ASOS offers a simple and one-step sensing/capture procedure for the quantification and visual detection of the target elements from water, without requiring sophisticated instrumentation. The key result in this study is the ion selectivity exhibited by the designed ASOS toward the targets, Co(II), Cu(II), and Cd(II) ions, in environmental and waste disposal samples, as well as its reproducibility over a number of analysis/regeneration cycles. These findings can be useful in the fabrication of ASOS can be tailored to suit various applications.

    Original languageEnglish
    Pages (from-to)6393-6405
    Number of pages13
    JournalAnalyst
    Volume139
    Issue number24
    DOIs
    Publication statusPublished - 2014 Dec 21

    Fingerprint

    Optical sensors
    Cobalt
    Cadmium
    Scaffolds
    cobalt
    cadmium
    Ions
    sensor
    ion
    Water
    Chelating Agents
    water
    Copper
    Regeneration
    Catalytic Domain
    Metals
    chelating agent
    Medical problems
    Chelation
    Acids

    ASJC Scopus subject areas

    • Analytical Chemistry
    • Spectroscopy
    • Electrochemistry
    • Biochemistry
    • Environmental Chemistry

    Cite this

    Monolithic scaffolds for highly selective ion sensing/removal of Co(II), Cu(II), and Cd(II) ions in water. / Shenashen, Mohamed A.; El-Safty, Sherif A.; Elshehy, Emad A.

    In: Analyst, Vol. 139, No. 24, 21.12.2014, p. 6393-6405.

    Research output: Contribution to journalArticle

    Shenashen, Mohamed A. ; El-Safty, Sherif A. ; Elshehy, Emad A. / Monolithic scaffolds for highly selective ion sensing/removal of Co(II), Cu(II), and Cd(II) ions in water. In: Analyst. 2014 ; Vol. 139, No. 24. pp. 6393-6405.
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