Carbon-Based Nanostructures Obtained in Water by Ultrashort Laser Pulses

被引：33

作者：

Santagata, A. ^{[1
]}

De Bonis, A. ^{[1
,2
]}

De Giacomo, A. ^{[3
,4
]}

Dell'Aglio, M. ^{[4
]}

Laurita, A. ^{[2
]}

Senesi, G. S. ^{[4
]}

Gaudiuso, R. ^{[3
]}

Orlando, S. ^{[1
]}

Teghil, R. ^{[1
,2
]}

Parisi, G. P. ^{[1
]}

机构：

[1] UOS Potenza, IMIP CNR, I-85050 Tito, PZ, Italy

[2] Univ Basilicata, Dept Chem AM Tamburro, I-85100 Potenza, Italy

[3] Univ Bari A Moro, Dept Chem, I-70126 Bari, Italy

[4] UOS Bari, IMIP CNR, I-70126 Bari, Italy

来源：

JOURNAL OF PHYSICAL CHEMISTRY C | 2011年 / 115卷 / 12期

关键词：

ENHANCED RAMAN-SCATTERING; CHEMICAL-VAPOR-DEPOSITION; SOLID INTERFACIAL REACTION; DIAMOND NANOCRYSTALS; NANODIAMOND PARTICLES; AMORPHOUS-CARBON; ABLATION; LIQUID; NANOPARTICLES; OXYGEN;

D O I：

10.1021/jp1094239

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

An ultrashort (100 fs) Ti:Sapphire pulsed laser has been employed in order to produce nanostructures by pulsed ablation of a graphite target in water. Different (10-100-1000 Hz) repetition rates have been used, and the features of material produced have been investigated by surface enhanced Raman spectroscopy (SEAS) and scanning electron microscopy (SEM). SERS spectra show that a broad asymmetric band associated with diamond-like carbon (DLC) is observed when repetition rates of 10 or 100 Hz are used. On the contrary, ablated species produced with 1 kHz pulses present a narrow peak at 1333 cm(-1), the typical mode of diamond, which is, however, embedded in a DLC band centered at 1540 cm(-1). SEM images show the presence of dispersed octahedral-shaped structures having a size from 1 to 5 mu m, in the case of 10 or 100 Hz repetition rates, and agglomerates of particles having a dimension below 300 nm, when 1 kHz pulses are used.

引用

页码：5160 / 5164

页数：5

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