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Size‐ and Shape‐Controlled Synthesis and Assembly of a Silver Nanocomplex in UV‐Irradiated TSA Solution
Author(s) -
Yang Liangbao,
Shen Yuhua,
Xie Anjian,
Liang Jianjun,
Li Shikuo,
Zhang Qingfeng
Publication year - 2006
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.200600621
Subject(s) - chemistry , nanorod , x ray photoelectron spectroscopy , silver nitrate , fourier transform infrared spectroscopy , silver nanoparticle , nanoparticle , ultraviolet visible spectroscopy , nuclear chemistry , spectroscopy , molar ratio , irradiation , scanning electron microscope , chemical engineering , photochemistry , catalysis , organic chemistry , physics , nuclear physics , engineering , quantum mechanics
Abstract In this paper we describe the size‐controlled synthesis ofa silver nanocomplex based on the reduction of silvernitrate (AgNO 3 ) by UV‐irradiated tungstosilicate acid [H 4 (SiW 12 O 40 ), TSA] solution. This method allows the synthesis of ellipsoidal particles with an average size that is tunable between 2.4 and 84 nm by varying the molar ratio of silver nitrate to TSA, the pH of the reaction solution, and the reaction temperature. Silver nanorods can be formed from the ellipsoidal nanoparticles by controlling the aging time. The formation mechanism of these nanorods is also discussed. The nanoparticles are characterized by UV/Vis spectroscopy, FTIR spectroscopy, XRD analysis, XPS, electron diffraction (ED), TEM, and with a Zetasizer instrument. (© Wiley‐VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2006)