Formation of silver nanoparticles in Li2B4O7-Ag2O and Li2B4O7-Gd2O3-Ag2O borate glasses

被引：7

作者：

Adamiv, Volodymyr ^{[1
]}

Gamernyk, Roman ^{[2
]}

Teslyuk, Ihor ^{[1
]}

机构：

[1] OG Vlokh Inst Phys Opt, 23 Dragomanov Str, UA-79005 Lvov, Ukraine

[2] Ivan Franko Natl Univ, 8 Kyrylo & Methodiy Str, UA-79005 Lvov, Ukraine

来源：

APPLIED OPTICS | 2017年 / 56卷 / 17期

关键词：

SCATTERING; CONVERSION; EMISSIONS; SURFACE; IONS;

D O I：

10.1364/AO.56.005068

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

Results of investigations of 98.0Li(2)B(4)O(7) -2.0Ag(2)O and 97.0Li(2)B(4)O(7) -2.0Ag(2)O -1.0Gd(2)O(3) glasses with Ag nanoparticles ( Ag NPs), formed by thermal treatment in vacuum and in air, are presented. Intensive plasmon absorption bands, connected with Ag NPs, were observed in their optical transmission spectra. It is ascertained that in volumes of both glasses there is formed a small number of Ag NPs, whereas their main mass is concentrated near the surface of samples. The mechanism of Ag NPs formation is proposed. A conclusion is drawn that annealing in vacuum does not necessarily require the presence of reducing ions, whereas formation of nanoparticles at annealing in air is impossible without reducing agents. Structural defects play a decisive role in the Ag NPs nucleation process. Radii of formed Ag NPs are estimated by the half-width of plasmon bands, and by means of small-angle x-ray scattering. (C) 2017 Optical Society of America

引用

页码：5068 / 5072

页数：5

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