Open AccessThe preparation of SnO 2 and SnO 2 : Sb nanopowders by a hydrothermal method
Author(s) -
Thanh Bình Nguyễn,
Thi Thanh Binh Le,
Ngoc Long Nguyen
Publication year - 2010
Publication title -
advances in natural sciences. nanoscience and nanotechnology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.476
H-Index - 40
ISSN - 2043-6262
DOI - 10.1088/2043-6254/1/2/025002
Subject(s) - materials science , dopant , antimony , hydrothermal circulation , transmission electron microscopy , photoluminescence , tin , analytical chemistry (journal) , nanoparticle , band gap , tin oxide , doping , hydrothermal synthesis , luminescence , nuclear chemistry , nanotechnology , chemical engineering , chemistry , metallurgy , optoelectronics , chromatography , engineering
Nanopowders of antimony-doped tin oxide have been prepared by a hydrothermal method with Sb dopant concentration changed from 0 to 3 at.%. The hydrothermal treatment was carried out from 180 to 220 ° C in 24 h. The structure and morphology of the product were characterized by x-ray diffraction and transmission electron microscopy (TEM). TEM images of samples show that the size of SnO 2 : Sb nanoparticles is in the range 4–5 nm. The absorption and luminescence properties of samples were investigated at room temperature. The band gap of SnO 2 : Sb varied from 3.9 to 4.2 eV with variation of the Sb dopant concentration. The nature of the photoluminescence peaks of the SnO 2 : Sb nanoparticles will be discussed.