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Integrated Ferroelectrics
An International Journal
Volume 169, 2016 - Issue 1: Proceedings of the Fourteenth China International Nanoscience and Technology Symposium (CINSTS15) Part I
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Original Articles

Shape transformation of Ag nanospheres to triangular Ag nanoplates: Hydrogen peroxide is a magic reagent

Kai LiDepartment of Chemistry, Capital Normal University, Beijing , P. R. ChinaCorrespondence[email protected] [email protected]
,
Qian WuDepartment of Chemistry, Capital Normal University, Beijing , P. R. China
,
Yangyang ShanDepartment of Chemistry, Capital Normal University, Beijing , P. R. China
,
Shishuo QiuDepartment of Chemistry, Capital Normal University, Beijing , P. R. China
,
Fu CuiDepartment of Chemistry, Capital Normal University, Beijing , P. R. China
,
Yuqing LinDepartment of Chemistry, Capital Normal University, Beijing , P. R. China
,
Zhengbo ChenDepartment of Chemistry, Capital Normal University, Beijing , P. R. China
,
Changbin GuoDepartment of Chemistry, Capital Normal University, Beijing , P. R. China
&
Tingting ZhengDepartment of Chemistry, Capital Normal University, Beijing , P. R. ChinaCorrespondence[email protected] [email protected]
 show all
Pages 22-28 | Received 04 Aug 2015, Accepted 03 Feb 2016, Published online: 06 May 2016
 
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ABSTRACT

Triangular Ag nanoplates were prepared using AgNO3, PVP, NaBH4, Na3CA and H2O2 as reagents. The obtained triangular Ag NPs were characterized by transmission electron microscopy and UV-visible spectrophotometer. TEM results showed that, the edge lengths of triangular Ag NPs were in the range of 35–95 nm. The thicknesses were about 5 nm. In addition, not only the edge lengths, but the thicknesses of triangular Ag NPs became larger after H2O2 was injected without stir. Larger red-shifts in UV-visible adsorption spectra were also observed due to a formation of larger triangular Ag NPs. Oxidative dissolution and the mild reducing action of H2O2 under alkaline conditions served as the principal reactions for the shape transformation of Ag nanospheres to triangular Ag NPs.

Funding

This research was financially supported by a fund from Scientific Research Project of Beijing Educational Committee (KM201410028006) and Training Project for Undergraduates’ Innovation Ability of Department of Chemistry (032145330300/049).

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