Atomic force microscopy of nanofiltration membranes

Effect of imaging mode and environment

D. J. Johnson, S. A. Al Malek, B. A M Al-Rashdi, Nidal Hilal

    Research output: Contribution to journalArticle

    Abstract

    The atomic force microscope (AFM) has become a useful tool for studying the morphology of membrane surfaces as well as their fouling characteristics. One principle advantage of the AFM over other high resolution imaging techniques is the ability to make observations in both ambient air and liquid environments. Diverse imaging modes also exist, each with their own advantages and disadvantages. In this study two different imaging modes in both air and water are compared when examining two different nanofiltration membranes, to compare the strengths and weakness of different methods of obtaining surface topography when applied to nanofiltration membrane characterization. When imaging the more hydrophobic of the two membranes using tapping mode in a water environment features consistent with the existence of surface adhered nanobubbles were observed. Such features have implications for the fouling of membranes by hydrophobic materials, as well as effects on the ability to image hydrophobic membrane surfaces under such conditions.

    Original languageEnglish (US)
    Pages (from-to)486-498
    Number of pages13
    JournalJournal of Membrane Science
    Volume389
    DOIs
    StatePublished - Feb 1 2012

    Fingerprint

    Nanofiltration membranes
    Atomic Force Microscopy
    Atomic force microscopy
    atomic force microscopy
    membranes
    Membranes
    Imaging techniques
    Fouling
    Microscopes
    fouling
    Water
    Surface topography
    Air
    microscopes
    air
    imaging techniques
    water
    topography
    Liquids
    high resolution

    Keywords

    • AFM
    • Atomic force microscopy
    • Membrane characterization
    • Membrane filtration
    • Membrane preparation
    • Nanofiltration membrane
    • Water purification

    ASJC Scopus subject areas

    • Biochemistry
    • Materials Science(all)
    • Physical and Theoretical Chemistry
    • Filtration and Separation

    Cite this

    Atomic force microscopy of nanofiltration membranes : Effect of imaging mode and environment. / Johnson, D. J.; Al Malek, S. A.; Al-Rashdi, B. A M; Hilal, Nidal.

    In: Journal of Membrane Science, Vol. 389, 01.02.2012, p. 486-498.

    Research output: Contribution to journalArticle

    Johnson, D. J. ; Al Malek, S. A. ; Al-Rashdi, B. A M ; Hilal, Nidal. / Atomic force microscopy of nanofiltration membranes : Effect of imaging mode and environment. In: Journal of Membrane Science. 2012 ; Vol. 389. pp. 486-498.
    @article{4fe4b1587ed74fe19d99dbfc3ea711f7,
    title = "Atomic force microscopy of nanofiltration membranes: Effect of imaging mode and environment",
    abstract = "The atomic force microscope (AFM) has become a useful tool for studying the morphology of membrane surfaces as well as their fouling characteristics. One principle advantage of the AFM over other high resolution imaging techniques is the ability to make observations in both ambient air and liquid environments. Diverse imaging modes also exist, each with their own advantages and disadvantages. In this study two different imaging modes in both air and water are compared when examining two different nanofiltration membranes, to compare the strengths and weakness of different methods of obtaining surface topography when applied to nanofiltration membrane characterization. When imaging the more hydrophobic of the two membranes using tapping mode in a water environment features consistent with the existence of surface adhered nanobubbles were observed. Such features have implications for the fouling of membranes by hydrophobic materials, as well as effects on the ability to image hydrophobic membrane surfaces under such conditions.",
    keywords = "AFM, Atomic force microscopy, Membrane characterization, Membrane filtration, Membrane preparation, Nanofiltration membrane, Water purification",
    author = "Johnson, {D. J.} and {Al Malek}, {S. A.} and Al-Rashdi, {B. A M} and Nidal Hilal",
    year = "2012",
    month = "2",
    day = "1",
    doi = "10.1016/j.memsci.2011.11.023",
    language = "English (US)",
    volume = "389",
    pages = "486--498",
    journal = "Jornal of Membrane Science",
    issn = "0376-7388",
    publisher = "Elsevier",

    }

    TY - JOUR

    T1 - Atomic force microscopy of nanofiltration membranes

    T2 - Effect of imaging mode and environment

    AU - Johnson, D. J.

    AU - Al Malek, S. A.

    AU - Al-Rashdi, B. A M

    AU - Hilal, Nidal

    PY - 2012/2/1

    Y1 - 2012/2/1

    N2 - The atomic force microscope (AFM) has become a useful tool for studying the morphology of membrane surfaces as well as their fouling characteristics. One principle advantage of the AFM over other high resolution imaging techniques is the ability to make observations in both ambient air and liquid environments. Diverse imaging modes also exist, each with their own advantages and disadvantages. In this study two different imaging modes in both air and water are compared when examining two different nanofiltration membranes, to compare the strengths and weakness of different methods of obtaining surface topography when applied to nanofiltration membrane characterization. When imaging the more hydrophobic of the two membranes using tapping mode in a water environment features consistent with the existence of surface adhered nanobubbles were observed. Such features have implications for the fouling of membranes by hydrophobic materials, as well as effects on the ability to image hydrophobic membrane surfaces under such conditions.

    AB - The atomic force microscope (AFM) has become a useful tool for studying the morphology of membrane surfaces as well as their fouling characteristics. One principle advantage of the AFM over other high resolution imaging techniques is the ability to make observations in both ambient air and liquid environments. Diverse imaging modes also exist, each with their own advantages and disadvantages. In this study two different imaging modes in both air and water are compared when examining two different nanofiltration membranes, to compare the strengths and weakness of different methods of obtaining surface topography when applied to nanofiltration membrane characterization. When imaging the more hydrophobic of the two membranes using tapping mode in a water environment features consistent with the existence of surface adhered nanobubbles were observed. Such features have implications for the fouling of membranes by hydrophobic materials, as well as effects on the ability to image hydrophobic membrane surfaces under such conditions.

    KW - AFM

    KW - Atomic force microscopy

    KW - Membrane characterization

    KW - Membrane filtration

    KW - Membrane preparation

    KW - Nanofiltration membrane

    KW - Water purification

    UR - http://www.scopus.com/inward/record.url?scp=83855161531&partnerID=8YFLogxK

    UR - http://www.scopus.com/inward/citedby.url?scp=83855161531&partnerID=8YFLogxK

    U2 - 10.1016/j.memsci.2011.11.023

    DO - 10.1016/j.memsci.2011.11.023

    M3 - Article

    VL - 389

    SP - 486

    EP - 498

    JO - Jornal of Membrane Science

    JF - Jornal of Membrane Science

    SN - 0376-7388

    ER -