Please use this identifier to cite or link to this item:
https://doi.org/10.1021/ja301805u
Title: | Aqueous-phase reactions on hollow silica-encapsulated semiconductor nanoheterostructures |
Authors: | Lian, J. Xu, Y. Lin, M. Chan, Y. |
Issue Date: | 30-May-2012 |
Citation: | Lian, J., Xu, Y., Lin, M., Chan, Y. (2012-05-30). Aqueous-phase reactions on hollow silica-encapsulated semiconductor nanoheterostructures. Journal of the American Chemical Society 134 (21) : 8754-8757. ScholarBank@NUS Repository. https://doi.org/10.1021/ja301805u |
Abstract: | We introduce a facile and robust methodology for the aggregation-free aqueous-phase synthesis of hierarchically complex metal-semiconductor heterostructures. By encapsulating semiconductor nanostructures within a porous SiO 2 shell with a hollow interior, we can isolate each individual particle while allowing it access to metal precursors for subsequent metal growth. We illustrate this by Pt deposition on CdSe-seeded CdS tetrapods, which we found to be facilitated via the surprising formation of a thin interfacial layer of PtS coated onto the original CdS surface. We took advantage of this unique architecture to perform cation exchange reactions with Ag + and Pd 2+, thus demonstrating the feasibility of achieving such transformations in complex metal-semiconductor nanoparticle systems. © 2012 American Chemical Society. |
Source Title: | Journal of the American Chemical Society |
URI: | http://scholarbank.nus.edu.sg/handle/10635/93135 |
ISSN: | 00027863 |
DOI: | 10.1021/ja301805u |
Appears in Collections: | Staff Publications |
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