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Silver nanoparticles stabilized by bundled tungsten oxide nanowires with catalytic and antibacterial activities

Published online by Cambridge University Press:  09 August 2013

Ziwei Wu ,
Xiaomeng Lü ,
Xiaojun Wei ,
Jiayu Shen  and
Jimin Xie
Ziwei Wu
Affiliation:
School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang 212013, People’s Republic of China
Xiaomeng Lü*
Affiliation:
School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang 212013, People’s Republic of China
Xiaojun Wei
Affiliation:
School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang 212013, People’s Republic of China
Jiayu Shen
Affiliation:
School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang 212013, People’s Republic of China
Jimin Xie*
Affiliation:
School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang 212013, People’s Republic of China
*
a)Address all correspondence to these authors. e-mail: laiyangmeng@hotmail.com
b)e-mail: xiejm391@163.com
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Abstract

An in situ redox reaction was developed to synthesize bundled tungsten oxide (WO3@W18O49) ultrafine nanowires (BUNs) loaded with Ag nanoparticles using weakly reductive W18O49 and oxidative silver nitrate as precursor. However, due to the weak activation between the two reactants, redox just happened on the surface of W18O49, resulting in the formation of W18O49 coated with WO3 (here, we refer this structure to WOx simply), and the bulk phase of the composites retained the same pattern. Ag nanoparticles (<5 nm) with a narrow size distribution were obtained and immobilized onto WOx BUNs without any aggregation. The paper presented a systematic investigation on the Ag-WOx nanocomposite used as a catalyst for the reduction of p-nitrophenol and as an antibacterial agent against Escherichia coli. The remarkably enhanced performance may be ascribed to the moderate interaction of the small Ag-NPs and WOx BUNs with high specific surface area.

Type
Articles
Information
Journal of Materials Research , Volume 29 , Issue 1: Focus Issue: Synthesis of Nanostructured Functional Oxides , 14 January 2014 , pp. 71 - 77
Copyright
Copyright © Materials Research Society 2013 

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References

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