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A New Route to Lead Chalcogenide Nanocrystals
Author(s) -
Ramasamy Karthik,
Nejo Ayorinde Olufunke,
Ziqubu to,
Rajasekhar Pullabhotla V. S. R.,
Nejo Adeola A.,
Revaprasadu Neerish,
O'Brien Paul
Publication year - 2011
Publication title -
european journal of inorganic chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.667
H-Index - 136
eISSN - 1099-0682
pISSN - 1434-1948
DOI - 10.1002/ejic.201100829
Subject(s) - chemistry , lead sulfide , high resolution transmission electron microscopy , x ray photoelectron spectroscopy , selenide , sodium borohydride , inorganic chemistry , telluride , nanoparticle , chalcogenide , sulfide , transmission electron microscopy , powder diffraction , sodium sulfide , tellurium , lead selenide , nuclear chemistry , selenium , chemical engineering , nanotechnology , crystallography , quantum dot , organic chemistry , materials science , catalysis , engineering
Nanoparticles of lead sulfide, selenide and telluride have been synthesized by the reduction of sulfur, selenium or tellurium powder with sodium borohydride (NaBH 4 ) to produce sulfide, selenide or telluride ions, followed by their reaction with a lead salt. In comparison to the chloride, nitrate or sulfate, considerable control of the product is possible when lead carbonate is used as the salt; various shapes of nanoparticles are obtained on varying temperatures and/or times of reaction. The nanoparticles were characterized by infrared spectroscopy (IR), powder X‐ray diffraction (PXRD), transmission electron microscopy (TEM), high resolution transmission electron microscopy (HRTEM) and X‐ray photoelectron spectroscopy (XPS).