Physicochemical investigation of nanopowders prepared by laser ablation of crystalline silicon in water

被引：8

作者：

Svetlichnyi, V. A. ^{[1
]}

Izaak, T. I. ^{[1
]}

Lapin, I. N. ^{[1
]}

Martynova, D. O. ^{[1
]}

Stonkus, O. A. ^{[2
,3
]}

Stadnichenko, A. I. ^{[2
,3
]}

Boronin, A. I. ^{[2
,3
]}

机构：

[1] Tomsk State Univ, Tomsk 634050, Russia

[2] Boreskov Inst Catalysis, Novosibirsk 630090, Russia

[3] Novosibirsk State Univ, Novosibirsk 630090, Russia

来源：

ADVANCED POWDER TECHNOLOGY | 2015年 / 26卷 / 02期

关键词：

Laser ablation; Silicon; Silica; Nanopowder; Oxygen vacancy; X-RAY PHOTOELECTRON; ULTRAVIOLET EMISSION; NANOPARTICLES; LUMINESCENT; XPS; NANOCRYSTALS; SIO2; OXIDATION; SURFACE; LIQUID;

D O I：

10.1016/j.apt.2014.12.004

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

In this work, an investigation of SiOx nanopowders synthesised by the laser ablation of crystalline silicon in water, evaporation of solvent and heat treatment is presented. The material is obtained for the first time by laser ablation in large quantities, which allows the use of a variety of physicochemical methods. The chemical composition and structure of the nanopowders were analysed before and after calcination in air and/or argon from 200 to 1000 degrees C. The particles prepared by laser ablation of a silicon target in water contain an amorphous and/or crystalline silicon core and a silicon oxide shell. Calcination results in the disappearance of crystalline silicon reflections in diffraction patterns and the appearance of oxygen vacancies in the silica. These materials are potentially important for such applications as optics, sensors and catalysis. (C) 2014 The Society of Powder Technology Japan. Published by Elsevier B.V. and The Society of Powder Technology Japan. All rights reserved.

引用

页码：478 / 486

页数：9

共 55 条

[51] Structure and formation mechanism of blue-light-emitting centers in silicon and silica-based nanostructured materials [J].