Laser fragmentation of Ag2O micropowder in water

被引：8

作者：

Zhilnikova, Margarita ^{[1
,2
]}

Barmina, Ekaterina ^{[1
]}

Pavlov, Ivan ^{[3
]}

Vasiliev, Alexander ^{[2
,3
,4
]}

Shafeev, Georgy ^{[1
,5
]}

机构：

[1] Russian Acad Sci, Prokhorov Gen Phys Inst, Moscow, Russia

[2] Natl Res Univ, Moscow Inst Phys & Technol, Dolgoprudnyi, Moscow Region, Russia

[3] Russian Acad Sci, Inst Crystallog, Moscow, Russia

[4] Natl Res Ctr, Kurchatov Inst, Moscow, Russia

[5] Natl Res Nucl Univ, MEPhI Moscow Engn Phys Inst, Moscow, Russia

来源：

JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS | 2022年 / 160卷

关键词：

Silver oxide; Laser fragmentation; Water; Hydrogen peroxide; CRYSTAL-STRUCTURE; NANOPARTICLES; MECHANISM; ABLATION; COLLOIDS; OXIDE;

D O I：

10.1016/j.jpcs.2021.110356

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Laser fragmentation of Ag2O micropowder in water has been experimentally explored. Ag2O nanoparticles (NPs) obtained using this strategy were characterized using optical spectroscopy and transmission electron microscopy (TEM). High-resolution TEM images indicate that laser exposure leads to the partial reduction of Ag2O to metallic Ag. As a result, some NPs exhibit a core-shell structure with a metallic Ag core or several Ag cores with a common Ag2O shell. The main mass of the fragmented colloidal solution of Ag2O was comprised of NPs with a particle size of 40 nm. The mechanism for the partial reduction of Ag2O to metallic Ag and the possible applications of Ag2O NPs have been discussed in detail.

引用

页数：5

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