Authors: Yang, X.C.; Li, W.J.; Dubiel, M.; Huang, W.H.; Yano, T.

Source: Journal of Nanoscience and Nanotechnology, Volume 9, Number 2, February 2009 , pp. 1659-1662(4)

Publisher: American Scientific Publishers

Abstract:

X-ray absorption fine structure (XAFS) technique was used to analyze structural geometry of Ag atoms introduced into soda-lime silicate glass and soda aluminosilicate glass by ion-exchange method. The results show that Ag⁺ ion in soda aluminosilicate glass takes a coordination number of 1.6 with a Ag-O distance of 2.20 Å when the ion-exchange ratio x is smaller than 0.47 and of 2.28 Å when x is larger than 0.47. The introduced Ag⁺ ions are stabilized at the non-bridge oxygen (NBO) sites when x is lower than 0.47. The Na⁺ ions in AlØ₄ (Ø₄ represents the bridging oxygen) sites are exchanged by Ag⁺ ions after all Na⁺ in NBO sites are replaced. The disorder of Ag-O coordination increases gradually with increasing x from 0.24 to 0.47 in soda aluminosilicate glass and increases dramatically when x is larger than 0.47. Ag⁺ ions takes a coordination number of 1.6 in the ion-exchanged soda-lime silicate glass and of 1.3 after subsequently thermal treatment with the same Ag-O distance of 2.14 Å. Debye-Waller factor (DWF) of Ag-O coordination in soda aluminosilicate glass is higher than that in soda-lime silicate glass. Small Ag cluster has a reduced interatomic distance and a larger DWF. Ag nanoparticle in sample Ag-7 is in a state of tensile stress.

Keywords: ION EXCHANGE; SILVER STRUCTURE ENVIRONMENT; XAFS

Document Type: Research article

DOI: http://dx.doi.org/10.1166/jnn.2009.C226

Publication date: 2009-02-01

More about this publication?

• Journal for Nanoscience and Nanotechnology (JNN) is an international and multidisciplinary peer-reviewed journal with a wide-ranging coverage, consolidating research activities in all areas of nanoscience and nanotechnology into a single and unique reference source. JNN is the first cross-disciplinary journal to publish original full research articles, rapid communications of important new scientific and technological findings, timely state-of-the-art reviews with author's photo and short biography, and current research news encompassing the fundamental and applied research in all disciplines of science, engineering and medicine.
• Editorial Board
• Information for Authors
• Subscribe to this Title
• Terms & Conditions
• ingentaconnect is not responsible for the content or availability of external websites

Related content

• In this: publication
• By this: publisher
• In this Subject: Technology
• By this author: Yang, X.C. ;  Li, W.J. ;  Dubiel, M. ;  Huang, W.H. ;  Yano, T.

Website © Publishing Technology. Article copyright remains with the publisher, society or author(s) as specified within the article.

• Terms and conditions
• Privacy policy
• Information for advertisers