Journal article 767 views 204 downloads
Synthesis of Single-Crystalline Lead Sulfide Nanoframes and Nanorings
Sascha Kull,
Leonard Heymann,
Ana B. Hungria,
Christian Klinke 
Chemistry of Materials, Volume: 31, Issue: 15, Pages: 5646 - 5654
Swansea University Author:
Christian Klinke
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DOI (Published version): 10.1021/acs.chemmater.9b01508
Abstract
We present a colloidal synthesis strategy to obtain single-crystalline PbS nanorings. By controlling the ripening process in the presence of halide ions, a transformation of initial PbS nanosheets to framelike structures and finally to nanorings was achieved. We found that the competing ligands olei...
| Published in: | Chemistry of Materials |
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| ISSN: | 0897-4756 1520-5002 |
| Published: |
American Chemical Society (ACS)
2019
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| Online Access: |
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| URI: | https://cronfa.swan.ac.uk/Record/cronfa52436 |
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| Abstract: |
We present a colloidal synthesis strategy to obtain single-crystalline PbS nanorings. By controlling the ripening process in the presence of halide ions, a transformation of initial PbS nanosheets to framelike structures and finally to nanorings was achieved. We found that the competing ligands oleic acid, oleate, and halide ions play an important role in the formation of these nanostructures. Therefore, we propose a formation mechanism based on a thermally induced ripening of crystal facets dependent on the surface passivation. With this method, it became possible to synthesize colloidal nanorings of cubic crystal phase galena PbS. The synthesis was followed via TEM, and the products are characterized by XRD, AFM, and STEM tomography. Control of the initial nanoframe morphology allows adjusting the later nanoring dimensions. |
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| College: |
Faculty of Science and Engineering |
| Issue: |
15 |
| Start Page: |
5646 |
| End Page: |
5654 |