Chemical Sealing of Nanotubes: A Case Study on Sb2S3

Implementing the solution chemistry, herein, we report the sealing of both ends of Sb2S3 semiconductor nanotubes following the diffusion‐controlled deposition of the sealing material, AgSbS2. As a consequence, unique dumbbell‐shaped hollow nanocapsules having a binary–ternary epitaxial heterojunctio...

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Bibliographic Details
Published in:Angewandte Chemie (International ed.) 2014-11, Vol.53 (46), p.12566-12570
Main Authors: Sarkar, Suresh, Guria, Amit K., Patra, Biplab K., Pradhan, Narayan
Format: Article
Language:English
Subjects:
antimony sulfide
heterostructures
nanocapsules
Nanocrystals
nanorods
nanotubes
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Summary:Implementing the solution chemistry, herein, we report the sealing of both ends of Sb2S3 semiconductor nanotubes following the diffusion‐controlled deposition of the sealing material, AgSbS2. As a consequence, unique dumbbell‐shaped hollow nanocapsules having a binary–ternary epitaxial heterojunction were formed in solution. Whereas these capsule‐shaped nanostructures were obtained by the introduction of Ag0 nanocrystals just after the formation of Sb2S3 nanotubes, the addition of Ag0 at the beginning of the process, prior to the formation of nanotubes, changed the growth pattern, and solid nanorods of Sb2S3 were formed. The details of the chemistry involved in the formation of these nanostructures were investigated and are discussed herein. Access denied! Binary Sb2S3 nanotubes were sealed with ternary AgSbS2 semiconductors by simply annealing the nanotubes in the presence of Ag0 particles (see structures). In this way, unique dumbbell‐shaped hollow nanocapsules were formed.
ISSN:1433-7851
1521-3773
DOI:10.1002/anie.201405148