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A General in situ Hydrothermal Rolling‐Up Formation of One‐Dimensional, Single‐Crystalline Lead Telluride Nanostructures
Author(s) -
Zhang Lizhi,
Yu Jimmy C.,
Mo Maosong,
Wu Ling,
Kwong Kwan Wai,
Li Quan
Publication year - 2005
Publication title -
small
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 3.785
H-Index - 236
eISSN - 1613-6829
pISSN - 1613-6810
DOI - 10.1002/smll.200400062
Subject(s) - lead telluride , hydrothermal circulation , materials science , telluride , transmission electron microscopy , foil method , nanostructure , hydrothermal synthesis , tellurium , substrate (aquarium) , scanning electron microscope , layer (electronics) , bromide , chemical engineering , nanotechnology , crystallography , chemistry , metallurgy , inorganic chemistry , optoelectronics , composite material , geology , oceanography , doping , engineering
In this study we demonstrate that one‐dimensional (1D) nanostructured lead telluride (PbTe) can be synthesized in a hydrothermal reaction between lead foil and tellurium powder. The resulting materials were characterized by X‐ray diffraction, scanning electron microscopy, and transmission electron microscopy. The formation of the 1D structure can be explained by an in situ hydrothermal rolling‐up mechanism whereby PbTe is formed hydrothermally and deposited on the lead substrate. The lead underneath the PbTe layer is then selectively etched by a cetyltrimethylammonium bromide solution, thus allowing the PbTe to roll up into 1D structures. This method can be extended to prepare other 1D tellurides, including CdTe, Cu 2 Te, and Ag 2 Te.