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Roles of Pt seeds and chloride anions in the preparation of silver nanorods and nanowires by microwave-polyol method

Silver (Ag) nanomaterials with well-defined crystal structures have been rapidly synthesized in three minutes by a microwave (MW)-polyol method. Various precursors such as H2PtCl6 and Pt(acac)2 have been used to detect real roles of Pt seeds and anions for the formation of the Ag nanomaterials. Furt...

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Main Authors: Tsujia, Masaharu, Matsumoto, Kisei, Jiang, Peng, Matsuo, Ryoichi, Tang, Xin-Lin, Kamarudin, Khairul Sozana Nor
Format: Article
Published: Elsevier BV 2008
Subjects:
QD Chemistry
Online Access:http://eprints.utm.my/id/eprint/12745/
http://dx.doi.org/10.1016/j.colsurfa.2007.09.014
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spelling my.utm.127452017-10-25T06:05:12Z http://eprints.utm.my/id/eprint/12745/ Roles of Pt seeds and chloride anions in the preparation of silver nanorods and nanowires by microwave-polyol method Tsujia, Masaharu Matsumoto, Kisei Jiang, Peng Matsuo, Ryoichi Tang, Xin-Lin Kamarudin, Khairul Sozana Nor QD Chemistry Silver (Ag) nanomaterials with well-defined crystal structures have been rapidly synthesized in three minutes by a microwave (MW)-polyol method. Various precursors such as H2PtCl6 and Pt(acac)2 have been used to detect real roles of Pt seeds and anions for the formation of the Ag nanomaterials. Furthermore, effect of Cl- anions to final morphologies of the Ag nanostructures has also been explored by pre-adding Cl- precursor such as NaCl or KCl in the ethylene glycol (EG) solutions only including AgNO3 and poly(vinylpyrrolidone) (PVP). The experimental results show that pre-formed metallic Pt seeds are probably not responsible for nucleation and subsequent evolution of 1D Ag products, but Cl- ions indeed influence the formation of the 1D Ag nanostructures as well as perfect crystallization of other Ag nanoparticles with well-defined crystal structures including single- and twinned-FCC crystals. It has been further evidenced that the presence of Cl- ions can accelerate re-dissolution of formed spherical Ag particles and is favorable to the growth of the 1D Ag and other Ag nanostructures with well-defined crystal structures such as single-crystal cubes and twinned bi-pyramids in the MW-assisted polyol reduction process. At the same time, it also indicates that H2PtCl6 probably does not act as a nucleation agent for the 1D Ag products but as a precursor of Cl- ions to affect final morphologies of the Ag products. Possible factors affecting shape-selected process of the Ag nanostructures have been discussed in detail. Elsevier BV 2008-03-05 Article PeerReviewed Tsujia, Masaharu and Matsumoto, Kisei and Jiang, Peng and Matsuo, Ryoichi and Tang, Xin-Lin and Kamarudin, Khairul Sozana Nor (2008) Roles of Pt seeds and chloride anions in the preparation of silver nanorods and nanowires by microwave-polyol method. Colloids and Surfaces A: Physicochemical and Engineering Aspects , 316 (1-3). 266 -277. ISSN 0927-7757 http://dx.doi.org/10.1016/j.colsurfa.2007.09.014 doi:10.1016/j.colsurfa.2007.09.014
institution Universiti Teknologi Malaysia
building UTM Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Teknologi Malaysia
content_source UTM Institutional Repository
url_provider http://eprints.utm.my/
topic QD Chemistry
spellingShingle QD Chemistry
Tsujia, Masaharu
Matsumoto, Kisei
Jiang, Peng
Matsuo, Ryoichi
Tang, Xin-Lin
Kamarudin, Khairul Sozana Nor
Roles of Pt seeds and chloride anions in the preparation of silver nanorods and nanowires by microwave-polyol method
description Silver (Ag) nanomaterials with well-defined crystal structures have been rapidly synthesized in three minutes by a microwave (MW)-polyol method. Various precursors such as H2PtCl6 and Pt(acac)2 have been used to detect real roles of Pt seeds and anions for the formation of the Ag nanomaterials. Furthermore, effect of Cl- anions to final morphologies of the Ag nanostructures has also been explored by pre-adding Cl- precursor such as NaCl or KCl in the ethylene glycol (EG) solutions only including AgNO3 and poly(vinylpyrrolidone) (PVP). The experimental results show that pre-formed metallic Pt seeds are probably not responsible for nucleation and subsequent evolution of 1D Ag products, but Cl- ions indeed influence the formation of the 1D Ag nanostructures as well as perfect crystallization of other Ag nanoparticles with well-defined crystal structures including single- and twinned-FCC crystals. It has been further evidenced that the presence of Cl- ions can accelerate re-dissolution of formed spherical Ag particles and is favorable to the growth of the 1D Ag and other Ag nanostructures with well-defined crystal structures such as single-crystal cubes and twinned bi-pyramids in the MW-assisted polyol reduction process. At the same time, it also indicates that H2PtCl6 probably does not act as a nucleation agent for the 1D Ag products but as a precursor of Cl- ions to affect final morphologies of the Ag products. Possible factors affecting shape-selected process of the Ag nanostructures have been discussed in detail.
format Article
author Tsujia, Masaharu
Matsumoto, Kisei
Jiang, Peng
Matsuo, Ryoichi
Tang, Xin-Lin
Kamarudin, Khairul Sozana Nor
author_facet Tsujia, Masaharu
Matsumoto, Kisei
Jiang, Peng
Matsuo, Ryoichi
Tang, Xin-Lin
Kamarudin, Khairul Sozana Nor
author_sort Tsujia, Masaharu
title Roles of Pt seeds and chloride anions in the preparation of silver nanorods and nanowires by microwave-polyol method
title_short Roles of Pt seeds and chloride anions in the preparation of silver nanorods and nanowires by microwave-polyol method
title_full Roles of Pt seeds and chloride anions in the preparation of silver nanorods and nanowires by microwave-polyol method
title_fullStr Roles of Pt seeds and chloride anions in the preparation of silver nanorods and nanowires by microwave-polyol method
title_full_unstemmed Roles of Pt seeds and chloride anions in the preparation of silver nanorods and nanowires by microwave-polyol method
title_sort roles of pt seeds and chloride anions in the preparation of silver nanorods and nanowires by microwave-polyol method
publisher Elsevier BV
publishDate 2008
url http://eprints.utm.my/id/eprint/12745/
http://dx.doi.org/10.1016/j.colsurfa.2007.09.014
_version_ 1643646030331248640
score 13.211869

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