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Nanocrystals PowerPoint Presentation
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Nanocrystals

Nanocrystals

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Nanocrystals

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  1. Nanocrystals MoS2 - crystalline

  2. Nanocrystals MoS2 - crystalline stuff w/ Li to get LiMoS2

  3. Nanocrystals MoS2 - crystalline Severely disrupts structure Local structure well-defined, poor long range order stuff w/ Li to get LiMoS2

  4. Nanocrystals MoS2 - crystalline Severely disrupts structure Local structure well-defined, poor long range order Use PDF stuff w/ Li to get LiMoS2

  5. Nanocrystals PDF oscillations die out Lots of structure, but broad peaks, overlap

  6. Nanocrystals MoS2 Best structure model for LiMoS2 (Li not shown, Mo dark) Mo-S trigonal prisms ––> distorted octahedra

  7. Nanocrystals "PDF test" applied (radial distrib fcn shown) LiMoO2 similar to LiMoS2 except not nanocrystalline Std crystal structure detn carried out "successfully"

  8. Nanocrystals LiMoO2 similar to LiMoS2 except not nanocrystalline Std crystal structure detn carried out "successfully" "PDF test" applied (radial distrib fcn shown) Corrected structure Mo-Mo bonding similar to Li MoS2

  9. Nanocrystals V2O5•nH2O xerogel ribbon-like particles - approx. 100 Å wide x 1  long No Bragg peaks - some sharp features + lots of diffuse scattering

  10. Nanocrystals V2O5•nH2O xerogel V2O5 V2O5•nH2O xerogel ribbon-like particles - approx. 100 Å wide x 1  long No Bragg peaks - some sharp features + lots of diffuse scattering

  11. Nanocrystals Stacking disorder in VO5 bi-layers V2O5•nH2O xerogel ribbon-like particles - approx. 100 Å wide x 1  long No Bragg peaks - some sharp features + lots of diffuse scattering V2O5•nH2O xerogel - VO5 bi-layers approx. 11.5 Å apart w/ H2Os in betwn Ribbons curled & tangled V2O5 - ordered single layers of VO5 units

  12. QCs

  13. QCs

  14. QCs

  15. QCs