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Chemical Sealing of Nanotubes: A Case Study on Sb 2 S 3
Author(s) -
Sarkar Suresh,
Guria Amit K.,
Patra Biplab K.,
Pradhan Narayan
Publication year - 2014
Publication title -
angewandte chemie
Language(s) - English
Resource type - Journals
eISSN - 1521-3757
pISSN - 0044-8249
DOI - 10.1002/ange.201405148
Subject(s) - nanorod , nanostructure , nanotechnology , ternary operation , nanocapsules , materials science , heterojunction , kirkendall effect , nanotube , nanocrystal , chemical engineering , semiconductor , chemistry , nanoparticle , carbon nanotube , optoelectronics , programming language , computer science , engineering , metallurgy
Implementing the solution chemistry, herein, we report the sealing of both ends of Sb 2 S 3 semiconductor nanotubes following the diffusion‐controlled deposition of the sealing material, AgSbS 2 . 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 Ag 0 nanocrystals just after the formation of Sb 2 S 3 nanotubes, the addition of Ag 0 at the beginning of the process, prior to the formation of nanotubes, changed the growth pattern, and solid nanorods of Sb 2 S 3 were formed. The details of the chemistry involved in the formation of these nanostructures were investigated and are discussed herein.