Pyramidal lead sulfide crystallites with high energy {113} facets

Dongbo Fan, P. John Thomas, Paul O'Brien

    Research output: Contribution to journalArticlepeer-review

    Abstract

    A new, generic method to exercise control over the shape of crystallites is reported. Crystals of PbS are grown in the unusual form of pyramids at the water-toluene interface. The pyramids are single crystalline and adopt a unique growth habit (slow growth along [113] direction). The pyramids are exclusive products of the reaction and are obtained in the form of a monolayered film spread across the fluid interface. The origins of the growth habit and assembly lie in phenomena unique to the liquid-liquid interface. The dimensions of the pyramidal base can be controllably varied in the range 575-1260 nm. Crystallites of other forms such as rods and spheres can be obtained by varying the properties of the fluid interface. Copyright © 2008 American Chemical Society.
    Original languageEnglish
    Pages (from-to)10892-10894
    Number of pages2
    JournalJournal of the American Chemical Society
    Volume130
    Issue number33
    DOIs
    Publication statusPublished - 20 Aug 2008

    Keywords

    • LIQUID-LIQUID INTERFACE
    • NANOCRYSTALLINE FILMS
    • FLUID INTERFACE
    • SOLID
    • PARTICLES
    • WATER-INTERFACE
    • NANOPARTICLES
    • GROWTH

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