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Open Access Publications from the University of California

Surface chemistry controls crystallinity of ZnS nanoparticles

  • Author(s): Gilbert, Benjamin
  • Huang, Feng
  • Lin, Zhang
  • Goodell, Carmen
  • Zhang, Hengzhong
  • Banfield Jillian F.
  • et al.
Abstract

Combined small-angle and high energy wide-angle x-ray scattering measurements of nanoparticle size and structure permit interior strain and disorder to be directly observed in the real-space pair distribution function (PDF). PDF analysis showed that samples of ZnS nanoparticle with similar mean diameters (3.2-3.6 nm) but synthesized and treated differently possess a dramatic range of interior disorder. We used Fourier transform infra-red spectroscopy to detect the surface species and the nature of surface chemical interactions. Our results suggest that there is a direct correlation between the strength of surface-ligand interactions and interior crystallinity.

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