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A Two‐Step Route to Self‐Assembly of CdS Nanotubes via Electrodeposition and Dissolution
Author(s) -
Zhou ShaoMin ,
Feng YiSi,
Zhang LiDe
Publication year - 2003
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.200200593
Subject(s) - wurtzite crystal structure , crystallite , nanowire , scanning electron microscope , chemistry , dissolution , transmission electron microscopy , x ray photoelectron spectroscopy , nanotechnology , semiconductor , diffraction , carbon nanotube , electron diffraction , chemical engineering , selected area diffraction , crystallography , materials science , hexagonal crystal system , optoelectronics , optics , composite material , physics , engineering
Polycrystalline CdS nanotubes (CNTs) were successfully achieved by a two‐step treatment, i.e. (CdS+Cd) nanowires (electrodeposition and sulfuration process in anodic alumina membrane) ⇄ CNTs (dissolution method of removing Cd in 0.5 M HCl). Having been characterized using X‐ray diffraction and scanning electron microscopy, the nanowires, the intermediate products, contain Cd and CdS, and have uniform diameters of about 80 nm and lengths of up to 25 μm, which correspond to the pore size and thickness of the membrane used. The average inner and outer diameters of the as‐obtained CNTs are respectively 40 and 80 nm via transmission electron microscopy. Selected area electronic diffraction, X‐ray diffraction and X‐ray photoelectron energy spectroscopy investigations demonstrate that these CNTs with hexagonal wurtzite polycrystalline structure are pure and stoichiometric. The successful synthesis of these semiconductor CNTs may open up new possibilities for studies of fundamental properties and potential applications of semiconductor nanotubes. (© Wiley‐VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2003)