High-Quality Carbon Nanomaterials Synthesized by Excimer Laser Ablation

Abstract

Due to their special physical and chemical properties and potential applications from hydrogen storage to medical implantation, the carbon-based nanomaterials are in the frame of attention for many research groups all over the world. As synthesis techniques, we highlight arc discharge, chemical vapor deposition (CVD) and laser ablation. Even an expensive technique, laser ablation is suitable for single-wall carbon nanotubes (SWCNTs) synthesis, providing the highest yield of over 70%, while arc discharge yield is about 30% and CVD is about 42%. The most common investigation methods for carbon nanomaterials are micro-Raman spectroscopy, thermo-gravimetric analysis (TGA) and morphological and topographic studies done by atomic force microscopy (AFM), scanning electron microscopy (SEM), transmission electron microscopy (TEM) and high-resolution transmission electron microscopy (HR-TEM). We also emphasize in this work that by involving a home-designed reactor, we successfully synthesized SWCNTs, carbon nano-onions (CNOs) as well as graphene in the same reactor. Tuning the experimental parameters, we switch the end type of nanomaterials. We have done comprehensive studies regarding the carbon nanomaterials synthesis.

Carboxyl-Functionalized Carbon Nanotubes Loaded with Cisplatin Promote the Inhibition of PI3K/Akt Pathway and Suppress the Migration of Breast Cancer Cells

“…Secondly, SWCNTs are able to transport low-molecular weight biological molecules with a higher cellular penetration rate and without triggering an immune response [29]. On top of that, SWCNTs exhibit IR fluorescence [30]. The IR spectrum between 900 and 1300 nm is an important optical window for biomedical applications due to its lower optical absorption (greater depth of light penetration) and small autofluorescent background, CNTs also displaying good photostability [31].…”

Pulsed Laser Deposition of SWCNTs on Carbon Fibres: Effect of Deposition Temperature

“…All the ablation parameters like laser energy, laser repetition, temperature, and pressure, were selected based on previous optimization studies [ 15 ]. The oven temperature, pressure, and total ablation time were: 1100 °C, 500 torr, and 60 min, respectively.…”

“…Synthesis of Single Wall Carbon Nanotubes (SWCNTs) has been reported by Enachescu’s group since 2014 [ 14 ]. In a review book chapter [ 15 ], the advantages of laser ablation over other methods were described in detail for the synthesis of carbon nanomaterials and the particularities of the self-designed reactor. Composite polymers with SWCNTs were prepared to increase the performances of solar cells [ 16 , 17 ].…”