Two-dimensional carbon nanostructures obtained by laser ablation in liquid: effect of an ultrasonic field

被引：44

作者：

Escobar-Alarcon, L. ^{[1
]}

Espinosa-Pesqueira, M. E. ^{[2
]}

Solis-Casados, D. A. ^{[3
]}

Gonzalo, J. ^{[4
]}

Solis, J. ^{[4
]}

Martinez-Orts, M. ^{[4
]}

Haro-Poniatowski, E. ^{[4
,5
]}

机构：

[1] Inst Nacl Invest Nucl, Dept Fis, Apdo Postal 18-1027, Mexico City 11801, DF, Mexico

[2] Inst Nacl Invest Nucl, Dept Tecnol Mat, Apdo Postal 18-1027, Mexico City 11801, DF, Mexico

[3] Univ Autonoma Estado Mexico, Fac Quim, Paseo Colon Esq Paseo Tollocan S-N, Toluca 50120, Estado De Mexic, Mexico

[4] CSIC, IO, Laser Proc Grp, Serrano 121, Madrid 28006, Spain

[5] Univ Autonoma Metropolitana Iztapalapa, Dept Fis, Apdo Postal 55-534, Mexico City, DF, Mexico

来源：

APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING | 2018年 / 124卷 / 02期

关键词：

RAMAN-SPECTROSCOPY; GRAPHENE; NANOPARTICLES; EXFOLIATION; PHASE; SIZE;

D O I：

10.1007/s00339-018-1559-8

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The ablation of a carbon target immersed in deionized water, in absence and in presence of ultrasonic waves is reported, and the differences investigated. The obtained nanostructures are characterized by transmission electron microscopy, Raman spectroscopy and photoluminescence. Transmission electron images reveal that the produced carbon nanostructures, with and without ultrasonic excitation, are graphene-like sheets with improved quality in the first case. Samples prepared with ultrasounds show graphene layers with large sizes (several microns) and regular shapes, whereas the samples prepared without ultrasounds show smaller sizes and irregular shapes; additionally, some dispersed quasi-spherical nanoparticles are observed in the samples prepared without ultrasound. Photoluminescence measurements of the obtained nanostructures reveal emission in the blue spectral region.

引用

页数：7

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