A general in situ hydrothermal rolling-up formation of one-dimensional, single-crystalline lead telluride nanostructures.
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.
Zhang
Lizhi
L
Department of Chemistry, The Chinese University of Hong Kong, Shatin, N. T., Hong Kong, PR China.
Yu
Jimmy C
JC
Mo
Maosong
M
Wu
Ling
L
Kwong
Kwan Wai
KW
Li
Quan
Q
D000077286:Cetrimonium; D002593:Cetrimonium Compounds / Q000737:chemistry; D003460:Crystallization; D007854:Lead / Q000737:chemistry*; D053768:Metal Nanoparticles / Q000737:chemistry*; D008855:Microscopy, Electron, Scanning; D046529:Microscopy, Electron, Transmission; D008956:Models, Chemical; D049329:Nanostructures / Q000737:chemistry*; D036103:Nanotechnology / Q000295:instrumentation* / Q000379:methods*; D011312:Pressure; D013691:Tellurium / Q000737:chemistry*; D013696:Temperature; D014961:X-Ray Diffraction
D002593:Cetrimonium Compounds; D007854:Lead; D013691:Tellurium; D000077286:Cetrimonium